Search found 175 matches

by FZBob
Feb 26 2020 5:05pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

I used the same current limits as the Turnigy 6374, since I worry about cooking the VESC. Why worry ? just set the MOSFET temperature start and limit values and power will be gradually reduced from start to end limit tempeature. I would say 60C to 70C is pretty safe. The Mystery 6384 has a fairly h...
by FZBob
Feb 25 2020 8:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

Did you get the motor? What are your impressions ? I received the Mystery 6384 motor a while ago. It took about 6 weeks to ship from China. I have 5 rides on it since the end of January. Power: I originally ran the D5035 (orange) motor. I switched to the Turnigy 6374 motor mid last year. The 6374 w...
by FZBob
Dec 06 2019 4:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

fixvid wrote:
Dec 05 2019 4:24am
[And you din't even wait for my review .. may Aliexpress fulfill your wish :lol:
What can I say - I'm a sucker for a sexy motor!

Do you happen to know the keyway dimensions? (Hopefully 3mm wide...)
by FZBob
Dec 04 2019 4:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

Whoah i think we are going too far with the numbers here.. this motor is just a little bit longer than D5035. I expect it to be a little more torquier but i don't think it's stronger than Turnigy 6374. It would be too good to be true at half the price of Turnigy motors. I borrowed some pics of the ...
by FZBob
Dec 03 2019 8:49pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

This puppy with chinese pedigree is very close in size to the orange D5035 but it's much heavier(~+250g) and at half the price! I wonder if it's more copper in there.. I didn't test it yet cuz i had a hell of a time enlarging the 8mm ID of 11t sprocket to 10mm as this motor's shaft. Nice find! Comp...
by FZBob
Nov 04 2019 1:19pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

You might be surprised at how much power is actually being produced by the Steps E8000 "250w" isn't the actual output. That said I'd look at GNG for various belt parts since many of their early drive systems had a belt primary. They have since gone plentary though and personally thats the direction...
by FZBob
Nov 04 2019 1:11pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

I have the new bike, its Cannondale Habit Carbon 2 SE. Currently has 13kg but i will put it on a weight loss diet until it reaches 12kg. Maximum weight without batteries should not exceed 15kg because i have to put it on a roof rack and i'm not the strongest. We have 3kg to play with for the motor,...
by FZBob
Nov 02 2019 4:46pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

Fixvid - Grantmac makes a lot of good points. Designing and developing a proper gear reduction will probably be about an order of magnitude more work/difficulty than a single reduction system. I learned long ago not to build anything that I could just buy. I just took a quick look at the CYC, and it...
by FZBob
Nov 02 2019 3:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

My gearing is 46t - 28t, I cannot go lower then this. I have the same problem as you, bad knees, and I'm struggling on hills. It would be preferable not to pedal at all and that's what I'm aiming for. I really feel that there is more power in that motor but rpm is not enough. Dumping a lot of amps ...
by FZBob
Oct 31 2019 8:34pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

That box for the bike is really neat. Do they allow max 100Wh per battery or per 'luggage' ? If it's per battery then a lot of trick can be made by splitting the battery. I made some improvements for my motor bracket. The plastic was not dissipating heat and i was constantly overheating. Now im usi...
by FZBob
Oct 18 2019 2:16pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Airline Travel

I found another advantage to a light, low power E-Bike. Last week I traveled from California to Arkansas. There are great trails in Bentonville, so I shipped my bike. https://www.bikeflights.com/ Since the bike is relatively light, the shipping rates were really good. Another 2 pounds and shipping c...
by FZBob
Sep 28 2019 9:42pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: 6S Experiment

Interesting, do some of these outrunners come with temp sensors? whats the motor heating rate 4svs6s? All six of my motors have sensor cables. Five of them have six wires in the sensor cable, which I believe indicates they have temperature sensors. As I run sensorless FOC, my sensor cable is not co...
by FZBob
Sep 28 2019 2:36pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

6S Experiment

A month ago I posted some data on VESC heating vs power. It looked like this put a limit on continuous power. That was using a 4s battery. I was curious to see if changing from 4S to 6S (NO gear ratio change) would improve things. More Voltage and less current... So I ran a quick & dirty experiment....
by FZBob
Sep 23 2019 12:01am
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

Sorry I dont want 93mph at all, 1200*60*0.000695km= 50Kmh? going close to 40mph is of interest to me. I am highly interested in the vesc6 and power dense motor Got it. The VESC 6 does look interesting. Just curious - is this your main transportation or a toy? Are you OK with the time and expense of...
by FZBob
Sep 22 2019 4:25pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

I'm planning out a fixie build with sick bike parts cranks. The biggest cog I found for the hub is 22T 3/32 chain . Assuming wolf tooth 30T with the 3/32. And lets say 53 rebel and 9T motor sprocket, I'd be going pretty fast on 10s. 26in 2.4 wheels. 1200Rpm at the wheel I think, is this a good idea...
by FZBob
Sep 21 2019 5:17pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

That is nicely integrated! I like the overall looks better than the commercial E-Bikes. Lots of cool little details, like the cover over the motor phase wires.

If you made that keyway with a file, you have my respect!

Have fun riding!
by FZBob
Sep 05 2019 3:03pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

Thanks for the info. I will have a look. I like the Wolftooth products. I am using a 104 BCD spider. The new Rebel sprocket is also a 104BCD, so I would like to stay with this mount. The smallest I've seen on a 104BCD was 30T, with the spider interfering with the chain. My SRAM chainring is having ...
by FZBob
Sep 03 2019 2:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

The battery was custom made from 18650 Sanyo 3400Ah cells - 4S4P, fitted inside a 30mm x 50mm rectangular tube. Animalector spot welded the cells for me. He has done a great job. The biggest BMS that fitted into the tube was 40A. The battery is a bit heavy, but I wanted it to be as solid as possibl...
by FZBob
Aug 30 2019 3:24pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Metr Data

I've had the Metr working for a while now. The data is very interesting. I implemented the cruise control switch at the same time. The first surprise was that I stop and rest more often than I thought, especially when riding with friends. I was sure we stopped three times on our standard ride. Turns...
by FZBob
Aug 30 2019 1:55pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

So I took the bike for its first test run. The best part of the bike is that it still has the feel of my original bike, just a bit heavier. With this new bike if you want power you need to spin the chain ring fast to get the motor working. It reminded me of the spinning gym classes when I though pe...
by FZBob
Aug 07 2019 2:12pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

What Android app are you using? Are you able to connect with the VESC app? It is very easy to use and just works. My Metr App also connects and works, but I haven't really looked at it yet. I've done nothing special. I should have said "using the Metr app on my Android phone". I'm just planning to ...
by FZBob
Aug 07 2019 2:06pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: Metr Pro Help

Kepler wrote:
Aug 07 2019 5:24am
Make sure you have set the App to ADC and UART. Also make sure you have Baud rate set to 115200.
Thanks! I had the VESC set to ADC. Changed it to ADC and UART, and now I have data. Now I need to go for a ride!
by FZBob
Aug 07 2019 1:27pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

gladly followed this tread and I congratulate you! I know it's a single stage project but it wouldn't be possible to introduce a planetary reducer like this (there are hundreds) https://www.aliexpress.com/item/32724629794.html?spm=a2g0o.productlist.0.0.5914207csB0yBa&algo_pvid=948eefdc-fbc0-42cc-98...
by FZBob
Aug 06 2019 1:53pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Metr Pro Help

I just got my Metr Pro connected and communicating. I had to make a breakout cable to share ground and +3.3V with the throttle, and connect ADC to throttle only. The two LED's on the Metr board (blue & green) both blink rapidly and the (edit) Metr app on my Samsung Android (end edit) says it's "Conn...
by FZBob
Aug 06 2019 1:35pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 351
Views: 44813

Re: My RC Mid Drive with Single Stage Reduction

I have finished building the Push button CCT for the ADC input to the VESC controller. Basically you can adjust the three selections (L/Middle/R) to any voltage you would like. You can also choose to hold the green button in for RUN or lock it in with the cruise button (latched). I have tested the ...