Modifying prebuilt junk, in stages, to be less junk like.

Inevitable human error factor realized.

I pulled the tape off my parallel ESC feed XT90.

I pulled loopkey and plugged in old DMEGC 10s2p battery to parallel ESC feed, to decide on extension size and battery location on deck between feet.

Later on, went to go roll, and plugged loopkey into parallel ESC port.

Direct short!

Stepped on board and pushed, to only find brakes.

Quickly realized my midtake and yanked loopkey.

It Was not even hot!

WTF?

Plugged loopkey into proper receptacle spun a wheel and beep beep.

Seemingly no damage done to battery or ESC.

Rolled to park.

Just dropped enclosure in park and half removed neoprene gasket

14 awg from parallel feed to ESC XT90 not burnt.

no smell.

Nothing even hot.

I dropped enclosure as i thought

The 14 awg from parallel port to esc must be toasted.

Must have been shorted for at least 5 seconds.

WTF?

Where did all that juice go?

1 Like

Was the charge port fused?

The charge port is fused.

The parallel ESC feed is not.

I plugged the loopkey directly into the parallel ESC feed, directly shorting the Healthy 10s2p BAK 45D battery, for several seconds, and somehow, nothing bad appears to have happened. We rolled a mile to the park where I charged it at upto 315 watts earlier today, rolled 5 more miles, and am charging at 84 watts as I type.

I can still read battery voltage on parallel port. I figured it must have melted the solder joint of 14 awg to panel mount XT90, but everything seems solid, like it never happened.

Edit, sorry I wrote 2 posts above that I plugged loopkey into parallel charge port when i meant to type parallel ESC port. I edited the mistake.

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I got an MRI on my shoulder, the one I dislocated nearly 14 months ago, about 2 weeks ago.

The orthopedist office called me and said we can review the MRI with a physicians assistant an a few days, or with the doctor in a few weeks.

Depending on those readings I would have to decide whether to upgrade my insurance, and do so basically the day of the appointment with the PA, or have to wait 6 months The upgrade would save me a lot of money on Physical therapy and followup visits.

The PA pulled up the MRI and was like you have a full width/ thickness tear of the Supraspinitus.

I was like ā€˜what about the subscapularis?’ I know I completely fail the three tests one can do to see if their subscapularis is ruptured.

ā€œOh, we are not really worried about the Subscapularis!ā€

ā€œReally, well I kind of am!ā€

She quickly scrolled thorough some other images but never having looked at an MRI before i had no idea what to look for and she just hemmed and hawed and returned to the obvious break of my SupraSpinitus saying there is no way that heals without surgery, and the topic of subscapularis was therefore somehow irrelevant, and I was getting annoyed.

I am not doctor and had foolishly not had a list of questions to ask, but I was ā€˜like there looks like a lot of retraction. How can you grab that tendon and stretch it all the way over here and reattach it.

Did I wait too long?

Oh no they can just go in and grab it pull it over and bla bla bla. you definitely didn’t wait too long but you want to do it ASAP!

ā€˜That seems like it would take a huge amount of force, like there would be a huge amount of stress on the remaining tendon and the sutures and the anchors.’ i said

Oh dr so and so does dozens of surgeries per month, you will be in good hands. Dont worry

I snapped this tendon 14 months ago….. I said, but she was already headed for the door.

ā€˜The front desk will call you to schedule your surgery’’ and like a fart in the wind she was gone.

That was on a friday.

First thing monday morning I get that call, and I am like WTF, I have no Idea if I can even afford this or if i want to even go through with it, I didnt even get to ask if there were any options or other considerations.

Oh well we will mail you an estimate after talking with your insurance.

Why didn’t you do that first?

That came back as 1200$ not including this that or the other thing and subject to change, and the surgery center said they would need a minimum of 1500 dollars but the anasteologist is not included and we have no idea what they will charge, and all this other stuff is not covered and bla bla bla.

Just call us up when you want to schedule.

So a week has passed. The recovery from this surgery looks like a pretty major ordeal. 6 weeks in a sling and then months of physical therapy.

Researching how long is too long after the traumatic rototor cuff tear, the answer is basically sooner is better but 6-12 months is the maximum and chances for a successful repair drop dramatically after that high likelyhood the remaining tendon is too weak and the sutures pull right through, and I am worse off than I am right now.

Factors like the degree of retraction and fatty infiltration of the atrophied muscle are huge factors as is age and overall health.

I could plainly see on the MRI that the retraction of the Supraspinitus was well past the glenohumeral joint, well past the 22.5mm ā€˜danger zone’.

Fatty infiltration means even if they were to grab the broken tendon and run a suture through it, it might just cheese wire the remaining tendon, and the surgery would be a failure, and i’d wake up and they’d be like sorry, you need a full shoulder replacement.

Overall, I feel if I were to go ahead with this painful and expensive and life altering procedure during the recovery, I have no faith that it will be successful.

6 weeks in a sling basically means instead of helping my 88 year old dad take care of my Alzheimmered mother, he gets to take care of both of us.

It means I can’t effectively or safely do any of the house or yard maintenance, or cooking or cleaning or shopping, or even drive, for at least 6 weeks.

It means I can’t Pull Fiona in her chariot, Which is basically my only fucking Joy left, And Fiona’s mammaries are growing lumps again. She might not have very long left.

It seems like the system does not care one whit whether the surgery will be successful, only that it will earn them money. All of my concerns and questions were dismissed or just unanswered.

Fuck this shit.

My fault for waiting too long, but I couldn’t afford the 9K$ bill for the emergency room, I had no insurance, i couldn’t afford an MRI. The ortho i saw initially was the same way. I wanted to know how likely it was that I had a full tear and which rotator cuff was the most likely damaged and what to exercise and what to avoid, but the GD Mf’er could not get out of the room fast enough, to go snort another line of Coke. I left the office 190$ poorer, with a generic printout of basic rotator cuff exercises and a growing anger and hatred, and NO answers.

4.5 months later had the MCI, Three coronary stents added, and my shoulder seemed the least of my worries.

So I am thinking That there will be no shoulder surgery, I will never be able to paddle into a wave again, or hold my arm up above shoulder level ever again without poppy clicky crunchy grinding and some pain on the side.

But I will be able to help my dad take care of my mom, and I will be able to tow Fiona in her chariot for as long as she has left.

The shoulder is not hugely painful. Does not affect my ability to sleep anymore.

It is emotionally painful knowing I will never surf again, that re-dislocating my shoulder will always be too easy to accomplish, and that Fiona will likely not be with me too much longer.

Makes me want to go bundle up and pull out the Esk8 and the chariot and go bark up the hood with her in the middle of the night, and fuck all the self important people in this neighborhood who will complain like I am personally responsible for the cattle prod up their rear ends.

4 Likes

Tough gig dude.

Having to make health related choices along with money is such an awful thing.

I hope whichever path you take works out ok.

And I’m sorry to hear about Fionna…

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Thanks for reading through my TLDR Raphael.

It is basically as cold as it gets here, and Fiona and I’s evening rolling session started with a full throttle roll to the kayak launch.

I Finally bought some shoes. I have had only Flip flops or hiking boots, or water socks since December ā€˜22 and almost exclusively skate barefoot.

The callouses on my feet were all dry and cracked and painful and non responsive to treatment. I bought some Relxfeet barefoot shoes. These are the only shoes i ever bought in my size which were not too narrow. I’ve always had to buy 2 to 2.5 US sizes up.

The first few rolls and walks i was kind of disappionted as i thought I would be able to feel the board and ground better through the thin soles. Walked a few miles on them and rolled 30+ miles and I they are getting far more sensitive. Very comfortable.

During the comparatively cold evening roll, full throttling everywhere carving up and dopplifyiering the hood, speed tucking into the cold north wind, I had a good think, and feel a lot better.

I now at least know which rotator cuff muscle is completely gone. I assumed it was the subscalpularis, but it is the supraspinitus.

I have a high level of function right now, and not much pain, and my sleep is largely unaffected.

it is mstly I do not have the strength to do any over shoulder height tasks and some other tasks cause crunch grind pop that don’t really hurt that much, but are more unsettling as it cant be helping at all when it happens. but I am learning what movements cause it and am modifying accordingly.

I am going to seek out a Physical Therapist who can help me figure out a plan and a regimen to regain as much shoulder and arm function as possible without a supraspinitus, and also reduce the rate of onset of the inevitable crippling arthritis for as long as possible.

The outfit I had been seeing has a PT department, but since none of the so called professionals would actually stay in the room long enough to answer questions, and made me feel like a piece of unimportant meat on an assembly line, they have lost my business, and earned my contempt.

I’ve already found a few Physical Therapists within easy range of my 10s2P, and who claim to take my insurance, and also be dog lovers. It would be great to not have to leave Fiona behind.

I am going to appreciate every day I have left with her, and continue to give her the best life I can.

She loves it cold.

Full throttling in a speed tuck into a strong north wind for a few miles has her all fired up right now, wanting to play ball, acting puppy like.
I wish I had the camera out tonight.

her grin at speed was just heart melting and priceless.

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Fionna is great dude. She looks happy!!!

Sometimes I think you are a Carl Hiaasen character.

I had a thought about the whole surgery thing.

Sometimes for folks in the medical field, and specially in surgery centers things are black and white to them.

You have a tear. You have to operate.

And maybe they believe with that approach you get back to functional sooner.

And it could be the case. Unfortunately it comes with a possible huge bill.

I have managed to avoid any surgery on my lower back or neck despite herniated and bulging discs.

On my neck I had a surgeon tell me I was a great candidate and we should send it.

Then I went over to a neurologist and went non invasive. And for that the recovery and work is about the same.

But your case seems more complicated. I hope you can get a second opinion. As of recent years I prefer to work with Nurse Practitioners and Physician assistants more some than MDs because I tend to find I get more time and they can be more attentive. (Sometimes)

It’s so cold here. I have not ridden in so many days.

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Ha.

I guess a guy towing a goofy sheepdog in a homemade chariot with an electric skateboard while both are barking like lunatics, is indeed like a character straight out a Carl Hiassen/ Only in Florida novel.

I never considered myself to be that guy, but I guess I am.

Oh well, I ain’t stopping because of that realization.

Tim Dorsey is another author with humorous Zany Florida characters, though I’d be less pleased to be compared to them, than Carl’s characters, as I Don’t hurt other people, ever, unless they are butthurt that I don’t stop rolling and interact or pose for pictures, and look away when I see their cameras on me anyway.

I pulled out my First Esk8 battery, (10s2p of DMEGC 26E cells) and checked its balance. It has one partial cycle on it since June 1 and was at storage voltage. I charged it towards 41.98 volts and noticed the BMS cut off charging early. The voltage delta was over 100MV, and did not seem to improve much, if any after I discharged group 7 from 4.25v, to below 4.178v and then charged the pack as slowly as I could back up above 41.8v bumping it up in 0.03v increments.

I was planning on strapping it to the deck between my feet, plugging it into my Parallel ESC xt90 receptacle, and acting as a range extender pack and exploring some new areas today despite it being basically as cold as it gets here during the day, and I have lost a lot of my tolerance for cold whilst living here.

This battery was getting too hot during use after about 2k miles. or I should say I noticed it getting too hot after 2k miles. It was returned to duty 2.5 months after I destroyed the P42A submerging it in the bay and destroyed my shoulder trying to prevent that occurrence.

So not sure whether the Dumb Daly BMS is actually capable of balancing as it had plenty of time to do so.

I’ll check delta again after discharging it to the ESC cutoff, then recharging it again.

It is unlikely to overheat today even if it was not in parallel with the BAK45D 10s2p.

Gonna go bark up some hoods.

3 Likes

I mean right!!!

It’s so cold and miserable here. Still no riding for me.

I just can’t get inspired to brave the super cold.

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Fiona and I went farther than ever before today We passed dozens of Ebikers on the trail I only once rolled before. I did not then notice the 15mph speed limit, and largely ignored it today when there was no one nearby, or passing the 15mph abiders was easy with no oncoming traffic.

I had strapped my old DMEGC 10s2p pack to the deck and plugged it into the parallel ESC port, and I carried the portable charger, and a second battery and booster in the chariot with Fiona.

At about the 10 mile mark I separated the 10s batteries and went to portacharge them separately, and found I forgot to plug in the DMEGC balance connector, and then realized I forgot to charge teh DMEGC 7s2p that was the charging source for the DMEGC 10s2p battery.

So only returned a little bit of charge into dmegc 10s2p when I disconnected portacharger from BAK45d 10s2p and paralleled them again and headed back towards where I came from. Close to 8 miles later I was getting the soft cut, but it got us to the park.

I removed and stored the DMEGC in the chariot and put the portacharger on the BAK45d 10s2p. It delivered 3 amp hours back into it as we walked across the park. Made it home with 2+ miles to spare and rolled them.

The 10s2p DMEGC pack which refused to balance overnight, now has a range of 3.052 to 3.460 volts.

group10 was the highest last night, 7 was the lowest, and after a near full discharge, group10 is still highest and 7 is lowest and the order in between did not change at all. I did not expect this.

I do not think the Dumb Daly 15 amp 10S BMS does any balancing, and I will try and manually balance them tonight.

The range extender pack did allow the further faster than ever before roll today, but I expected a bit more than I got from it. Glad I turned around when i did though. Not having that 7s2p fully charged was a limiting factor and I would have enjoyed going 2 more miles before turning around.

A can carry a 5s2p BAK45D Makita battery and a 6s1p Samsung 50E to charge from and explore that which i could not today, and then some.

The range extender top mount battery could certainly be something far more capable. A 10s3 or 4 P of Eve 50E could be in my future. The trail I was on today goes a lot farther north or south, and is far more pleasant to roll than a road with vehicular traffic filled with entitled tourists whizzing by.

The roughest sections are not very rough, and getting to the trail is about 3.6 miles.

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Your battery situation is so overwhelming to me…

I can’t follow most of it.

But I am glad you rode further.

And it just dawned on me that you can’t really easily do the Uber of shame should your battery die or your board break.

You should carry the mini board as a spare in the chariot.

Still so cold.

But I did ride the onewheel pint inside the house for a while

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My battery system is a bit convoluted no doubt.

Today was the first time I used my old esk8 battery ( 187wh 5.2AH 10s2p DMEGC 26E)as a top mount range extender. I have a second xt90 panel mount on my enclosure next to my loopkey, wired directly to the ESC. So plug it in and I parallel my old 187 watt hour pack to my new 324 watt hour Bak45D 10S2P pack, and have ~50% more range.

I can also Pull the loopkey and just use a top mount battery, no parallel mismatched battery shenanigans. My old esk8 battery gets too hot too easily though.

I don’t actually own an AC/DC dedicated 10S charger. I use constant voltage/ constant current voltage boosters as charging sources.

Usually, I am boosting from 12v Lead Acid batteries in my garage. I keep those lead acid AGM’s charged and floating at 13.6v with high amperage adjustable voltage power supplies I have from when I lived on wheels out west, and learned how to whisper to lead acid batteries and get them to last more than 200 deep cycles.

All voltage boosters prefer higher input voltages, So boosting from 5s /6S and 7S batteries allows for higher charge rates and more efficiency.

I have 7s batteries from the original premade junk, and I recently rebuilt the premade 7s2p with 0.2mm copper, as its Decent DMEGC20P cells were still balanced and running cool, and then made another 7s2p with Eve 35V cells for inside my portable charger which is just the enclosure which came with my premade junk. I made a much fatter heatsink to mount the Vbooster onto.

I have also made a 108wh 6s1P Samsung 50E battery to power my TS101 soldering iron at upto 82 watts. I have used this to charge my Esk8 as high as 200 watts but 175 is safer on the hot running 50E cells.

I also have many 5S power tool batteries, and just made a 162Wh 5S2P Makita battery with 10 BAK45D cells, and 0.3mm copper which blows away my 72wh makita and ridgid and dewalt power tool batteries.

Basically if I have a battery that has more than 10 volts, I can charge my Esk8 battery, no AC outlet needed. Roll to beach, charge esk8. yeehaw.

Fiona’s chariot can carry a lot more than just Fiona, So today I carried both my 7s2p batteries, one inside the portable charger, and one outside it with a spare vbooster, So I had two charging sources, and two Esk8 batteries.

I have something like 7 voltage boosters. 3 of them are going right now.

Unfortunately today, one of the 7s2p batteries was not fully charged, so I could not confidently explore as far South as I wanted to.

The car free ā€˜legacy’ trail I was on today, which is about 4 miles away from my front door on some fairly stressful roads, is something like 29 miles long end to end, and about 20 of those miles are south of me. I only made it about 6 before turning around. I am thinking I want to roll the whole thing with Fiona. She seemed to really enjoy it today.

The Mini Skate only has a 10s1P eve 40PL and I am not really sure how much range it has when towing Fiona.
I have strapped it to the chariot when I met up with Trancejunkie, and we cruised close to 10 miles without hitting the soft cut, but we were going pretty slowly. Fiona in the loaded chariot is 90 Lbs and more wind resistance and really cuts into the range

The Mini is not nearly as comfortable to cruise on. It is more of a grocery getter and a slow speed leg rubberizing carve machine, and a viable back up. The Guppy I can comfortable cruise much faster, even though the Mini is likely faster.

The Mini still needs some tuning before it is the board I want it to be. but fully functional is usually good enough for me and cosmetics can wait forever.

I have considered adding a second direct to ESC panel mount xt90 to the mini. I have had the walk of shame once with it when I cruised to the kayak launch leaving with just 2 bars and no portacharger.

My old 10s2p battery is pretty far out of balance right now, and while it worked as a top mount range extender, I could build a battery for this purpose with a lot more capacity.

But, I always stop and walk with Fiona in parks or new neighborhoods which need to be sniffed and scented, and I can set up the portable charger next to the esk8 in the chariot, in 16 Mississippi’s and walk and charge at upto 315 watts.

I know a big enclosure housing enough watt hours would be a nicer solution but I often do not even use the full range of my BAk45D 10s2p and I got to assume the Guppy is pretty damn light compared to most Esk8’s.

2 Likes

This is my first Esk8 battery, made with DMEGC-26E cells( poor choice) 10s2p I finished building in January 2024, and which likely has 3K miles on it now.

When I originally made this battery I shorted groups 4 and 5 unintentionally, and they were ~150MV less than the other 8 groups.

The Dumb Daly BMS did not seem to be doing anything to reduce this imbalance, leaving it a 4.20v for 12 hours, and I made this ā€œ420 injector’ with a LM2596 voltage bucker and a 4 decimal voltmeter and a 2 pin JST XH and JST PH connector to feed the balance connector, and Dialed in perfect balance which then remained perfect on discharge and subsequent recharges and only slowly drifted but never more than 35mv.

This battery has sat largely unused since June 2025 until recently. There was over a 100mV delta in the 3.6v range, and then nearly the same in the 4.20 range, and a nearly 500mv delta in the 3.2v range.

Again the BMS did nothing to top balance, but it did work to disconnect charging source when cell 10 exceeded 4.25v.

I then discharged until cell group 10 was below 4.18, and then charged as slowly as could, about 0.22 amps. The Delta never improved.

When paralleled it with my BAK45D 10s2P, as a range extender, I took it back down to 3.2v, and the order of groups, highest to lowest was exactly the same as at the top.

I charged it slowly, at 1 amp until 41.6v and then lowered unloaded charge voltage to 41.8v and current down to 0.22 amps, and waited until my ammeter said 0.00. Then I bumped it to 41.83v, and waited until it tapered to zero, then 41.86, 41.89. 92. 96, 99, again and again until I was up at 42.05 volts and the BMS was cutting off the charge source.

Again cell 10 was up at 4.249v and cell group 7 was 4.149v. No change, and the order of lowest to highest cells was exactly the same.

This seems to be proof that the Dumb Daly BMS, at least this specific BMS, is not balancing at all, as there can be no more advantageous procedure I can think of to allow the BMS the time to do what it claims it is designed to do.

So I busted out the 420 injector again, and have brought groups 1,2 and 7 up to just above 4.20, where all other 7 groups range from 4.208 to 4.249.

Before partial retirement, This DMEGC battery was getting way too hot when inside my enclosure, but being in parallel strapped to my deck was just warm, on a relatively cool day.

it did boost my range, and I intend to use it again in this manner.

I have used the same Dumb Daly BMS on my subsequent battery builds, but the fact that it did not even attempt to do any top balancing, has me less than happy with my choice.

I wonder if I messed it up connecting the balance connector after the B- was soldered to the battery. The high voltage disconnect does still work, not sure about the low.

The P42A 10s1p was destroyed before balancing was ever required, but the BAK45D 10s2P and Eve 40PL 10S1P are employing this same Dumb Daly BMS.

AND I have another one, for the next 10S2p battery, Which thanks to Nelvick’s overwhelming generosity, and less than perfect English :wink: , is going to be made from TenPower 50XG’s.

So The Bak45D 10s2P, built with 0.1mm copper under 0.1mm nickel plated steel and dual 14awg series connections, which has been partially cycled twice most every day since June 1 2025, and which is still performing awesomely, will become the top mount range extender pack.

The 50XG 10s2p will reside inside my enclosure, and this DMEGC could be paralleled to the BAK45D too, If I need go tow Fiona more than 24ish miles at 20+ MPH.

I might feel obligated to use 0.3mm copper under 0.1mm stainless steel when I build it.

And the portable charger range extension potential remains, high.

4 Likes

Thank you very much for sharing these results.

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With some more weather due tomorrow, and today being so pleasant, Fiona and I rolled our longest distance yet in a single outing, Some 25 miles.

I had the top mounted 10s2P DMEGC paralleled to the BAk45D 10s2p.

I brought both the EVE 35v 7s2P portacharger, and the DMEGC 20P 7s2p battery to power a second CC/CV booster.

There was a bunch more bike traffic on the trail and I kept the speed down, and was kind of disappointed every time I looked at the voltmeter on the remote.

We went several miles further south than the last time we went this way, and we used up all the 7s2p battery capacity recharging.

We returned home at about 32 volts, so not much to spare.

I just checked the DMEGC-26E 10s2p balance after 1.5 hours of resting in parallel with BAK, and the lowest (group 1) was 3.193v and the highest (group 9) was 3.294v, so still a 100mV delta near the bottom.

The last time I discharged this dmegc26E battery this low, the lowest cell (group 2) was 3.068 and the highest (group 10) was 3.460.

So manually top balancing through to balance plug, seems to have been effective, somewhat, but simply exercising the cells after many months of rest is likely a factor too.

My first charge stop today, I just kept the 10S batteries in parallel and hooked up the Eve35V powered portacharger into DMEGC charge port at 215ish watts, and the inline Wattmeter claimed it had delivered 2.0AH, when we were ready to roll again.

The second charging stop I unparallelled the 10S batteries and put the ~50% SOC EVE35v powered portacharger on the BAK initially at 215ish watt but then dialed it up to about 270 watts.

The 7s2p Dmegc 20p powered CCCV booster was on th DMEGC -26E 10s2p at ~ 171 watts.

The EVE portacharger gave up first, and then I parallelled the 10s batteries ( there was about 250mV delta) and then let the other 20P powered booster charge both 10s batteries in parallel at 171 watts, but did not run this 7s2p booster battery dry.

We got to the park 1.7 ish miles from home and walked across it, and then did run the dmegc 7s2p battery dry charging whilst park walking.

It got the paralleled 10S batteries to about 35.4 volts, which was enough to roll home, but Next time will load chariot with more booster battery and go further, faster.

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Shoes?

Yep.

Barefoot shoes, and socks.

Feels like cheating.

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We rolled the trail north into new to us territory, at pretty high average speed, into a strong cool headwind.

I didn’t feel like stopping and chilling and charging, but charging was needed.

For the first time, I plugged in the Portacharger, set it to 7 amps/ ~265 watts output, strapped it on top of the DMEGC 10s2P, and headed back the way we came.

There was no remote issues with EMI or RFI from the noisy CC/CV booster, and voltage according to the remote basically held steady or slowly increased when we were rolling 20MPH with a tail wind, and only slowly decreased when we were rolling 24/25mph. We got 7 miles to the park shown above, and the battery voltage was basically the same as 7 miles earlier, 34.7 ish volts. There was a few stretches with nobody around, So I was slightly tucked and full throttling and holding 28mph for a good mile and a half, barking with Fiona, whose speed tuck still needs some work, but is improving.

The wattmeter said it delivered 4.08 amp hours when it quit. The Booster heatsink was barely warm to the touch with all the airflow, and same for the enclosure over the EVE 35V 7S2P battery .

I put it away, and brought out the 7s2p DMEGC 20P pack and the other free air white CCCV booster and dialed it upto 315 watts/ 8.66 amps output, into both parallelled 10S batteries. It quit early having delivered only 1.06 amp hours. The DMEGC 20P cells sagged hard enough to trigger the BMS LVD, but it has since rebounded to 23.26v or 3.31 volts per cell.

This 104wh 4.0ah DMEGC 20P 7s2P pack has delivered over 2 amps hours before powering CCCV booster, but at higher receiving battery voltages, and at about a 215 watts charge rate.

Fiona was in no mood to walk across the long park, and neither was I, so we rolled around it and explored some unfamiliar roads to our regular park, and made it home no worries, and then went nearly another 2 miles locally until the ESC soft cut kicked in and we barely made it up the driveway.

I’ll have to google Earth the total distance we travelled but I will guess it was about 22.5 miles at a Far higher average speed than the other day’s 25 miles outing in the other direction.

The charge and roll was pretty awesome.

I need to make the booster inside the portacharger more vibration resistant. I didn’t build it with strapping it to the deck in mind, but it worked awesomely. I really didnt feel like stopping and charging, it was much nicer to be able to just keep rolling.

We had a tailwind but the board felt a bit more torquey even though voltage was 36v or less, and it usually does not feel as torquey there.

21 TenPower XG50’s, courtesy of Nelvick, were at my front door when we returned home.

They are all at the same exact voltage, to 3 decimal points.

Also some 0.2mm nickel plated copper strip.

Looking forward to building another battery, and the extra range it will deliver and the new places we will explore because of it.

4 Likes

Heard a rattle when transitioning board from workbench charging station to the ground today, and delayed the park run.

Rattle sounded precisely like a M4 nut on fiberglass.

It was from the xt90 panel mount, and getting the nut back on and cinched tight, fought me.

I decided to check battery balance while I was there and had already loosened the battery for better access to the Nut.

My capacity controllers do not really agree so I swap green and red and record both. Seems Group 4 on the green controller always reads a bit high.

My BMS only starts balancing above 4.18v and I was charged to below that.

I’d prefer less of a delta, but 30mv is of no consequence and could be lower if I regularly charged low and slow to 4.18v then lower and slower to 4.20 regularly.

They have 8 cell versions of these ā€˜capacity controlkers’ which supposedly balance passively.

I put the MBS AS.12 baseplate and hanger on the guppy. The axle length requires a spacer either inside or outside the 5 star rim.

I put it inside for a wider track width and swapped the Kenda’s sides.

The tire tread sounded and felt a bit squirmy on the test run, but it handles very similarly to the old front truck.

Some ā€˜superworm’ silicone 14awg wire arrived today.

Its insulation has no memory of its time rolled up, like all my other silicone wire.

Seems to be a tiny bit more flexible too.

The Tenpower 50XG 10s2p Build is underway.

Some silicone is curing.

Need to cut some 0.2mm copper busbars, but the overkill in me wants to order 0.25mm copper, and use triple 14 awg series connections, even though my ESC claims only 24 battery amps max.

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Do you have any of the smart BMSs?

I think you would enjoy being able to see the data all the time.

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