Increase the tongue weight. So move the axle rearward a little or move Fiona forward a little.
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I returned her backrest pillow for our afternoon roll to the far park, which helped the handling as she sits a bit further forward.
The teak portion of the handle lost a lot of mass, and without the backrest she can really get her butt further back than before, as the back wall , and whole top rail lost a lot of volume/mass too.
It certainly feels a lot different in hand.
Walking it through the far park, which we have not been to in three weeks, made the lesser overall weight, and different weight distrbution, very noticeable.
I had a few extra velcro cinch straps today, and attached esk8 to chariot like this for the first time.
Can face the pneumies on back too, and handle is balanced close to perfect.either orientation.
The 7s2p battery delivering 99 of its 103.6wh to the CCCV booster is still surprising. I got it in Nov’23 and it has a few hundred cycles on it.
7s2p of Eve 35v would be about 176wh
After I finish sanding and shaping everything, and seal it. I want to adhere some D shaped seals to horizontal wood, as butt& body padding, allowing ease of air flow through the basket, and makes it more comfortable and secure for her.
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Another experiment.
100 watt 12v Nominal SunPower ‘flex’ panel to CCCV booster set at 41.5v output charging depleted 10s2p Esk8 battery.
Input booster voltage drops into high 16’s when dialing current trimpot higher. At some point, input voltage drops to 9.87, and watts in drops to about 53
Any passing shadow when dialed to 80ish watts input, has input voltage drop to 9.87, and wattage about 53. Got to dial down current pot enough to go below 53 watts to get voltage to jump back above 17.
If i keep it set to about 53 watts then passing shadows or complete shadow and it recovers to 17v+ input and 53 watts output.
So nearish noon, I can dial as high as 77 watts into 10s esk8 battery in perfect conditons meaning no shadowing.
Reliably 53 watts max in likely conditions.
Gotta check at 7s output voltages too.
Am seeing how I want to mount Fiona’s new Awning to chariot.
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solar shade? 
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Sun angle becoming brutal.
The breeze when rolling only helps so much.
53 watts charging, is not nothing.
It could charge 7s2p while underway.
99
wh 7s2p can feed esk8 10s2p 5.2 amps when walking.
Can 12v nominal solar feed 7s2p 54 watts via booster, whilst 7s2p boosters to 10s2p voltages, at 240 watts while walking through park, esk8 in chariot?
I guess a charging wire between chariot and rolling esk8 is possible too.
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Two Delta 50mmx10mm 24v fans arrived today.
Tested them at 12v, up through 29.6v.
Have one Now bridging my 150watt CCCV Booster’s heatsinks, with a little gap between, via some M2.5 screws, sucking air through.
Not much flow at 12v, but nice and quiet. Better than no airflow.
.
Now Charging 10s2p at 154 watts/4 amps walking and chilling the far park, from 7s2p.
Finned heatsinks staying cool with 24v fan at 24v+
This same booster with no fan on 5s at 2 amps/ 80 watts, got very warm.
Battery gonna be quite warm on return.
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Returned last evening to a 58.5C battery exterior, in relatively cool ambient temps, and 36.8v.
No doubt another couple miles and it would have been way over 60c, the Dmegc cell’s max allowed temp, which no doubt it has seen many dozens of times last summer and fall.
Fiona got her sutures removed an hour ago.
Vet said no charge, incision looks good, finish antibiotics, and she can resume normal activities now.
Kayaking tomorrow, maybe.
Just ordered 22 Tabless BAK45D from @DIY500AMP.COM
He included 11 dual 21700 plastic case holders, gratis, and I just got a UPS tracking number within a half hour of ordering.
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So we dopplerified the hood, charged the full length of CST, and are barking at boats and pelicans in weather as nice as it gets.
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Awesome! You can also use the vesc in dc mode, as a buck converter, and charge the battery .
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Nice!, slight correction, it becomes a boost converter, charging voltage has to be lower than battery pack voltage.
I did a little writeup on EndlessSphere:
Feel free to ask any questions y’all might have.
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Awesome! This is a very convenient way to charge from a solar panel! Do you know if the vesc bms balances the cells when you charge this way? Also is there an app that you can use?
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I am glad my experiment with a 100 watt rated 12v nominal solar panel feeding a CCCV booster, feeding a 10S2p esk8 battery has stirred interest.
I am still Vesc challenged, but am willing to absorb the conversation, or try to. Please continue here, or if this topic deserves its own thread, then make it so and no worries from me either way.
A short summary of my experiment, is that I could spin the current potentiometer of the CCCV booster upwards and get 83 watts output from a 100 watt rated panel in full noonish florida sun mid April.
This output is similar to previous maximum recorded output of this warm to hot panel, when feeding either a MPPT, or PWM solar charge controller, on a 12v nominal Lead acid system.
If the solar panel was shaded briefly at that output, then voltage on input side of CCCV booster, fell to below 10, and total output wattage to 53. I had to crank current potentiometer on CCCV booster way down, for input voltage to recover to 16v plus.
If I kept max output wattage, via CCCV booster’s current trimpot, to 53 or less, then input voltage after shadowing the panel, would recover to 16v plus.
@16v plus input, I could then dial current potentiometer to 83 watts again, but 84, and it would collapse to 53watts max and 9.87v input, and the booster documentation says 10v is the minimum allowable input voltage, so how long it could handle 9.87v input is the ?
So with what i have now, I can get 83 watts at noon, in Florida, this time of year, if babysitting the panel and booster with jeweler’s screwdriver ready to spin current trimpot down, then back up, while watching hard to read wattmeters in full sun.
If I want to set it and forget it, I can dial 53 watts max. This 53watts max lowers as sun drops toward western horizon.
It seemed a bit worse boosting to only 7s charge voltages. I expected the opposite.
I think to make 83 watts harvest reliable, with what I have on hand, I need a pwm or mppt solar controller feeding a 12v(ish) nominal battery, and that battery feeding the booster, charging the esk8 battery.
I have 14lb/6.4kg 22 ah AGM 22v battery and dedicated charge controllers, but perhaps a lighter battery can be used. Ideally 4s of LFP.
I wonder how a 24 or 48v nominal panel would behave feeding the booster directly.
In other news, I placed my order for the 22 BAK45d at 12:36pm today.
A shipping label was created at 1:07pm.
UPS was delivered the package at 1:22pm
Expected delivery, Tomorrow, between Noon and 4.
I could be building a battery this time tomorrow.
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Faster shipping service !!!
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I glad it make it fast and safe !! Thank you for supporting the store buddy !!
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lets rebuild the pack !!!
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I was able to push that 1P P42a pack to above 58C too, on a hot day, riding it hard.
Should go ride right now.
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I am assuming in the picture are the BAK45D?
Yes. They are the BAK45D.
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