Snappy Chariot | Jet Hot Potato deck | Caliber II 50º | 190kv R Spec 6372 | Spacecell

I love those evolve wheels !! Where did you buy them ? Straight from their us website ? I thought they are selling parts only to Evolve users.

You should be fine just placing an order online like I did. I would think It would be tough to monitor that sort of thing. I imagine they aren’t as concerned with things like wheels, bearings etc.

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Cool. What’s is the urethane quality ?

Very tidy looking and at 76a I can actually see then deflect a little when under load. No regrets from my end. I

Let the light shine through! Tricky to accurately line up and make these cuts but it’s looking good.

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So the board is 95% complete!!! Final elements are locktite on the drive train, drilling out for the final enclosure fixings and grip tape.

I took it for a 15 min blast last night and it was excellent. I’ll let the following tell the remaining photos tell the story of the closing chapters.

Cut down the Hot Potato by and 1" of each end bringing the total length down to 33 1/5". Scolloped 2 ply out underneath the motor mouth to increase clearance and extended the wheel wells out.


Fancy Dremel work on the trucks ( thanks for the video @longhairedboy) to fit the Enertion pulley

Added a combo of open and closed cell foam to allow the space cell to conjure to the deck cleanly. This is actually just your standard weather striping but it does the job Created some "jumper wires to extend the R-Sepc wires around to the VESC.This gave some practice before I soldered the 5.5 bullets on the to the VESC. Since I didn’t have a 3rd hand device, this tape and pliers method worked well for me. Just fit!

And the (nearly) finish product. Its been a very rewarding process! I am already thinking about the next build and what I would do to improve the end result :slight_smile:

Thanks to the whole crew here on the forum for the helping hands and trouble shooting along the way!

g

http://www.youtube.com/watch?v=KVbnFxiHohY

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its beautiful!

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Nice looking build! Big fan of the black on black, hides the enclosure to board transition really well. If you take a black sharpe to the screw heads securing the motor wires, they’ll look anodized and blend in a little better.

Nice work! The routing of the phase wires looks pretty clean.

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i want a potato… damn

Yeah man thanks… that was the intention. Ideally it would be great to have orange on anyof the blue elements orange to match the Evolve hubs!

It looks like I have a bit tweaking needed to get it running right.

  1. At first I though it was the region shutoff, but even with the depleted battery I get drop offs when breaking under load. For example, doing 25km and trying to apply a heavy break, it starts to but then drops off and coasts. Brakes gone! Releasing the break and reapplying helps a bit but, its usually because I am going a bit slower at this point.

This is my current configuration, any thoughts in what could be causing this?

Increase your max input voltage to 57, some people have had problems at 42. Couldn’t the bat max be higher? The space cell can go to 40. I’ve never used a VESC but these are two things that I can see. A search might help you as well

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This is beautiful man! Really clean work here. What grip tape are you thinking of using?

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Nice work man! Looks awesome!

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Nice board!

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Man, this looks awesome!!

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Thanks guys, So far I am pretty happy with how it turned out. @RunPlayBack I’ve picked up a pretty medium grit from a local skate shop. Cool feature is that it has small perforations every so often to make it easier to avoid air bubbles… So I think its MOB grip.

Unfortunately it looks like I’ve got a VESC issue. I’ve run BLDC for the first few tests but experienced some breaking dropouts. I did some research here on the forum and followed onloop’s directions to combat this problem here: http://www.electric-skateboard.builders/t/lost-of-brakes-when-going-full-speed-enertion-parts/6895 This thread suggests the default presets aren’t optimal.

It ran better but i still had one dropout and now less powerful breaking power. So after much consideration I switched over to FOC. The write-ups on FOC were compelling and sounded like the would suit me better. Well it lasted all of 5 min but it was wonderful! More torque and pickup and nicer to the ears! However as I was accelerating up a small incline it felt it skip a beat then continue fine. Then under acceleration again it skipped a moment and started coasting :unamused:

I’ve hooked up to the BLDC tool and I am now coming back with bad motor detection. I ran fault in terminal and it came back with “FAULT_CODE_DRV8302” Bugger.

So I decided to refreshing the firmware and starting from scratch. Unfortunately this hasn’t helped. I’ve removed the VESC and toughly inspected it under a magnifying glass and everything is clean and intact. I’ve run motor detection again and same “bad motor detection” This time I can’t get the terminal to spit out a fault code though.

Its a bugger because had I not had the breaking issue I probably wouldn’t have been altering the settings… it seemed to be great in most other ways. Is there any other trouble shooting that can be done, or is this VESC bricked?

Edit: This time it came back with the following fault report: The following faults were registered since start:

Fault : FAULT_CODE_DRV8302 Current : 0.7 Current filtered : -0.9 Voltage : 39.43 Duty : 0.00 RPM : 0.2 Tacho : 5 Cycles running : 1 TIM duty : 263 TIM val samp : 10 TIM current samp : 26384 TIM top : 52747 Comm step : 4 Temperature : 21.11

Fault : FAULT_CODE_DRV8302 Current : -0.3 Current filtered : -0.3 Voltage : 39.43 Duty : 0.00 RPM : 1.1 Tacho : 6 Cycles running : 0 TIM duty : 263 TIM val samp : 10 TIM current samp : 26384 TIM top : 52747 Comm step : 5 Temperature : 21.11

Fault : FAULT_CODE_DRV8302 Current : 1.8 Current filtered : -0.7 Voltage : 39.42 Duty : 0.03 RPM : 1.1 Tacho : 7 Cycles running : 5 TIM duty : 1160 TIM val samp : 609 TIM current samp : 21453 TIM top : 41687 Comm step : 6 Temperature : 21.26

Fault : FAULT_CODE_DRV8302 Current : 0.2 Current filtered : 0.4 Voltage : 39.37 Duty : 0.02 RPM : 2.0 Tacho : 9 Cycles running : 3 TIM duty : 991 TIM val samp : 523 TIM current samp : 22415 TIM top : 43784 Comm step : 2 Temperature : 21.31

Fault : FAULT_CODE_DRV8302 Current : -0.4 Current filtered : 0.5 Voltage : 39.42 Duty : 0.02 RPM : 1.9 Tacho : 10 Cycles running : 4 TIM duty : 991 TIM val samp : 523 TIM current samp : 22415 TIM top : 43784 Comm step : 3 Temperature : 21.43

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The problem of breaks cutting off when breaking very hard could be triggered by the VESC high temperature protection. Usually that will limit also the acceleration going uphill. To check if it’s that or not you need to do the hard braking test straight away before doing any hills and before doing your first km/mile so your vesc is still cool. Hope you get your vesc repaired soon, it really sucks when it breaks :confused: