Search found 562 matches

by DanGT86
Nov 18 2018 11:09am
Forum: E-Scooter and Motorcycle General Discussion
Topic: KDX 20.0 cells trailbike conversion
Replies: 16
Views: 945

Re: KDX 20.0 cells trailbike conversion

Got it. I think you are correct that you will need a clutch of some sort to achieve that level of control. When most people start talking about clutches on here they are usually thinking of them in terms of rev up and dump like a gas bike. Electric motor torque is amazing but zero rpm is still zero ...
by DanGT86
Nov 02 2018 9:15am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 2589
Views: 136385

Re: Sur-Ron - New Mid drive Bike

LFP, from what you have seen on this bike with your high power testing, would you consider the motor a good candidate for a non Sur-Ron conversion or is it just impressive for the stock hardware on that bike? Basically, if someone were doing a full size MX bike conversion at say 20-30kw would this b...
by DanGT86
Oct 30 2018 9:23am
Forum: E-Scooter and Motorcycle General Discussion
Topic: KDX 20.0 cells trailbike conversion
Replies: 16
Views: 945

Re: KDX 20.0 cells trailbike conversion

Have you been able to do any tuning of the controller. The zeros are de-tuned from the factory down low to preserve reliability. Even an underpowered electric drive system should be able to tear a bike in half or flip you over. You may want to look into unlocking and tuning the controllers for a ste...
by DanGT86
Oct 20 2018 7:39pm
Forum: Items Wanted
Topic: Cheap small BLDC mid drive motor
Replies: 3
Views: 137

Re: Cheap small BLDC mid drive motor

I've considered a small geared hub as a reliable and easy solution but I havent seen them used here lately. As for RC motors, I actually have an 80100 drive unit I made and considered mounting but I dont think its reliable enough for the kids to be crashing. It has a gates belt primary reduction and...
by DanGT86
Oct 20 2018 5:23pm
Forum: Items Wanted
Topic: Cheap small BLDC mid drive motor
Replies: 3
Views: 137

Cheap small BLDC mid drive motor

Anybody have an extra brushless mid-drive motor laying around? Something small is fine like a motor rated at 500-1000watt like this: mot small.png Trying to power a kids motorcycle and not looking for huge power but I plan to play on it too so its tiny brushed unit has to go. :twisted: Looking to st...
by DanGT86
Oct 20 2018 11:08am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 2589
Views: 136385

Re: Sur-Ron - New Mid drive Bike

I think you get some wiggle room by increasing the belt wrap with an idler. Still sucks to design and be under spec from the start though. Can you get a batch of extra wide belts made to help with power handling? Ive heard the belts skip teeth if you get too far out of the spec on power handling per...
by DanGT86
Oct 20 2018 10:27am
Forum: Motor Technology
Topic: Custom made #219 pitch sprockets?
Replies: 9
Views: 300

Re: Custom made #219 pitch sprockets?

I'll talk to you via PM
by DanGT86
Oct 20 2018 9:53am
Forum: Motor Technology
Topic: Custom made #219 pitch sprockets?
Replies: 9
Views: 300

Re: Custom made #219 pitch sprockets?

I have no international shipping experience whatsoever. How much do you think it would cost to have one sent from the middle of the US to you?
I'm in zip code 63116
by DanGT86
Oct 20 2018 8:39am
Forum: Motor Technology
Topic: Custom made #219 pitch sprockets?
Replies: 9
Views: 300

Re: Custom made #219 pitch sprockets?

https://www.accelerationkarting.com/kartmasterprdenginesprocket.html These come with a 14mm adapter but are made with a threaded locknut type mount. However, that leads me to believe there is a common kart shaft in 14mm that other companies might make things for. If space permits it on the motor, yo...
by DanGT86
Oct 19 2018 10:38pm
Forum: Motor Technology
Topic: Custom made #219 pitch sprockets?
Replies: 9
Views: 300

Re: Custom made #219 pitch sprockets?

http://www.rocketsprocket.net/rocket2018_007.htm This is a US company so shipping might be painful but they do sell up to 105 teeth. They will also do custom for $1 per tooth I think. They also offer mini sprockets in uncommon low sizes like 50tooth. If you buy from them MAKE SURE YOU EMAIL AND ASK ...
by DanGT86
Oct 17 2018 2:20pm
Forum: Items Wanted
Topic: heinzmann motors
Replies: 10
Views: 313

Re: heinzmann motors

My friend has one he was going to use for a project but its been slow going so he might part with it. Im going to see him today. What identifying marks or features will tell me if its the one you are looking for? I know it came off a goofy long cargo trike. It was or still is in a 20" or smaller whe...
by DanGT86
Oct 17 2018 12:12pm
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: electric trial bike
Replies: 301
Views: 78552

Re: electric trial bike

Interesting. Only 6 hour drive from my house too. Thanks.
by DanGT86
Oct 17 2018 9:14am
Forum: E-Scooter and Motorcycle Photos & Videos
Topic: electric trial bike
Replies: 301
Views: 78552

Re: electric trial bike

Does anyone know of resources to learn about moto trials bikes in general? I would love to understand the specifics of trials bike frame geometry and how it differs from mx bike geometry. Same goes for suspension. what are common measurements and weights of trials forks? How are they setup regarding...
by DanGT86
Oct 15 2018 9:11am
Forum: General Discussion
Topic: My Kentucky Fried Fingers
Replies: 28
Views: 841

Re: My Kentucky Fried Fingers

Total longshot here but is it remotely possible that so much static could build up that an initial static spark created an ionized pathway for a larger discharge? Seems theoretically possible but if so I would think things would be spontaneously exploding more often.
by DanGT86
Oct 14 2018 9:09pm
Forum: General Discussion
Topic: My Kentucky Fried Fingers
Replies: 28
Views: 841

Re: My Kentucky Fried Fingers

Could the contacts have pushed out of the plastic or been misaligned such that they touched together? Probably hard to figure out what happened unless you can catch all the smoke and reassemble it. Glad your fingers survived.
by DanGT86
Oct 12 2018 6:40pm
Forum: E-Bike Technical
Topic: Best rear torque arm design/layout?
Replies: 18
Views: 666

Re: Best rear torque arm design/layout?

The brake flange is the best possible way to do it. That flange is capable of handling way more torque than your motor would ever output and connecting the axle to the brake flange would provide additional rigidity to the frame in general. If you use regen at all then you want the tightest possible ...
by DanGT86
Oct 12 2018 11:53am
Forum: Battery Technology
Topic: 18650pack cell protection idea. PTC + fuse & diode).
Replies: 5
Views: 428

Re: 18650pack cell protection idea. PTC + fuse & diode).

I am talking about the auto resetting fuse. Im guessing based on your description that the resistance goes up with temp until its basically "tripped" to stop the current. I guess I'm wondering if there is such a ptc that would have little perceptable effect on the voltage signal under most normal te...
by DanGT86
Oct 12 2018 9:45am
Forum: Battery Technology
Topic: 18650pack cell protection idea. PTC + fuse & diode).
Replies: 5
Views: 428

Re: 18650pack cell protection idea. PTC + fuse & diode).

What about using PTC fuses on the signal wires/balance leads to the bms? I would like to implement this on a custom pack build for safety. The small wires that go to each cell seem easy to damage and could be a direct short if the battery got hit in a crash. I know several companies use them on all ...
by DanGT86
Oct 10 2018 9:44am
Forum: E-Bike Build Threads / Photos & Video
Topic: Neu 8057 6kW left hand drive hardtail with vesc and encoder
Replies: 22
Views: 1309

Re: Neu 8057 left hand drive hardtail with vesc and encoder.

Awesome! I've had my eye on those Neumotors for a while and watched Maddin88 build with much interest. Glad to see another build around here with that motor. It's a bit disappointing that you both had issues with vibration, shafts, and bearings. I thought one of the biggest upsides to this motor was...
by DanGT86
Oct 07 2018 10:04am
Forum: Large EV General Discussion
Topic: Any EV conversion lowriders out there?
Replies: 3
Views: 247

Re: Any EV conversion lowriders out there?

The kind of person who builds or commissions a lowrider is unlikely to be tech savvy to say the least. That said I couldn't agree more and would love to hit the switches on my own electric 64. I would expect the opposite. I think someone who cuts apart and redesigns the entire suspension of a car t...
by DanGT86
Oct 06 2018 10:15pm
Forum: Large EV General Discussion
Topic: Any EV conversion lowriders out there?
Replies: 3
Views: 247

Any EV conversion lowriders out there?

I was just thinking the other day about how almost every genre of car has been converted to Electric except lowriders. I'm talking about the quintessential 3 wheeling and hopping lowrider. Like a late 80s Monte Carlo or 64 impala on hydraulics. I'm thinking an electric drivetrain is the perfect fit ...
by DanGT86
Oct 03 2018 9:19am
Forum: E-Bike Non-hub Motor Drives
Topic: Kuberg Freerider Extended Swingarm Project
Replies: 146
Views: 15335

Re: Kuberg Freerider Extended Swingarm Project

Just curious, what is the actual diameter of that 24" rim and the tire. That almost looks like a 17" bike tire vs. a 24" bike tire rather than a 17"moto vs 18" moto. The Denzel 24" looks like a good option for a lot of projects. The tread pattern looks perfect for the type of mixed riding I like to ...
by DanGT86
Aug 31 2018 2:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: Albatros enduro bike.
Replies: 52
Views: 2775

Re: Albatros enduro bike.

Amazing work on the frame and the CNC Mill. Are the specs on that mill on on that forum you linked? I'd love to know more about it. I can see how google translate does with that text. Also, how did you make those 2 main brackets that the seat and tube are welded to? Looks like you may have machined ...
by DanGT86
Aug 24 2018 11:23pm
Forum: E-Bike Non-hub Motor Drives
Topic: RC motors, rated current and power?
Replies: 7
Views: 307

Re: RC motors, rated current and power?

I dont think there is a such thing as typical for ebike guys. I think the motor size difference between bikes and skateboards is related to wheel size, packaging, and instantaneous loading. Wheel size/gearing: The smaller the motor gets the higher rpm it needs to spin for a given amount of power. It...
by DanGT86
Jul 25 2018 9:43pm
Forum: E-Scooter and Motorcycle General Discussion
Topic: Haphazard lipo dirt bike build
Replies: 16
Views: 1182

Re: Haphazard lipo dirt bike build

Good deal on the bike trade. Don't know if you already bought all of the electric parts but if not, this is a pretty sweet deal and would probably make more power than your current plan. I actually have a CR125 frame sitting in my garage but I can't afford to build it or I would have snatched up thi...