Archived: the OG noob question thread! šŸ˜€

How-Tos & Esk8 mechanics Esk8 Mechanics
#15826

You still havenā€™t answered Brianā€™s question: Is it direct drive/hub motor or not?

Put another way: Is the motor inside the wheel or not inside the wheel?

Based on the picture, Iā€™d say yes it is a direct drive hub motor.

With that assumption, then yes, lowering the voltage will reduce your top speed. With a more powerful controller you will be able to accelerate and get up to speed faster, but your top speed will be slower that it was.

If itā€™s not a hub motor, then you can fuck with the gearing/belt/pulley/sprocket/whatever ratio to get that lost speed back.

3 Likes
#15827

If it were me, Iā€™d just match the lead acid batteryā€™s voltage using li-ion, rather than worrying about losing speed. 20S is just about perfect 72V, itā€™s what I have in my ebike. 84V full charge, ~60V empty.

Iā€™ve got a 100A Sabvoton controller and itā€™s more than enough. In fact Iā€™ve got it limited to 50A right now because the 20S7P battery I built sags too much at 100A. 50A at 72V though, is still a LOT of power. Itā€™s great :grin:.

1 Like
#15828

What is the truck mounting angle on a Landyautz Evo falcon 40? Using Kahua trucks.(50deg) Was getting bushing recommendations and this was asked. Thanks in advance.

1 Like
#15829

Front or back ? And which year evo deck?

The older evo decks front is 65 back 35.
Newer evo decks Iā€™ve been told front 60
Back 40

These are the angles with 50 deg baseplates. If you want to know the difference old evos +15/-15 front/ back. New evo. +10/-10 front/ back

2 Likes
#15830

Looks like about +10 degrees in front, and -10 degrees in the back. Or might be - in front and + in back, itā€™s too late to brain about angles right now.

#15831

Uh. Not sureā€¦ itā€™s this one. Iā€™m upgrading to the Kahua trucks next so wanted to know :slight_smile:

1 Like
#15832

Think this is the older evo so Iā€™d say itā€™s +15/-15 front/back.

But I will also let someone that is more confident weigh in.

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#15833

10deg looks about right. But whadda I know haha

#15834

No more than I do XD

1 Like
#15835

I thought the pic made it pretty obviousā€¦ Itā€™s a 500w hub motor. So my plans are

1500w 80a (setup at around 45a) controller
20s8p 20ah battery pack
And the original 500w hub

Is there a way I could figure out theoretical speeds and range? Would the servisas calc work?

#15836

Only if you know the KV of the motor.

3 Likes
#15837

Fuckā€¦ I donā€™t think thereā€™s a way of finding out either

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#15838

Email the seller and ask?

#15839

Iā€™m alway impressed by the wire gauge for hub motors !

You might be able to compute the KV from wheel size and max speed if those data are available ?

#15840

Max speed is governed in software, which is his main problem. :man_facepalming:

#15841

I meant from the constructor datas.

Thatā€™s what i did with my MXUS direct drive motor : the manufacturer wasnā€™t able/willing to give me the KV, but he told me the motor has a max speed of 32km/h with a 20in wheel @ 48V ; i was to compute an estimate KV.

#15842

If you run it with a vesc you can get a ballpark idea by measuring the RPM and dividing by the drive voltage. Not very accurate though.

1 Like
#15843

if i am interested in running 13s would you recommend trampa vescs or a unity more

which one is more reliable at 13s?

or is there a currently available better alternative to 13/14s

#15844

Stormcore 100 series

Vesc 75/300

I would never use the word ā€œreliableā€ while referring to operating things outside their specifications. The first word that comes to mind is ā€œriskyā€

4 Likes
#15845

not available for buying yet
do you know when it will be

im not made of money you know

what vesc is the most likely not to kill me