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by Hummina Shadeeba
Aug 01 2020 1:56am
Forum: E-Bike Technical
Topic: Opinions please: VESC - Vedder Electronic Speed Controllers
Replies: 16
Views: 716

Re: Opinions please: VESC - Vedder Electronic Speed Controllers

Foc is slower than in bldc mode with square waves and that’s normal but never been a problem for me but u can chose the bldc mode as well But the TI boards are also running FOC. Some more info: 14 V - VESC Isupply = 0.51 A, TI Isupply = 0.63 A 32 V - VESC Isupply = 0.75 A, TI Isupply = 0.89 A Inter...
by Hummina Shadeeba
Jul 31 2020 2:32pm
Forum: E-Bike Technical
Topic: Opinions please: VESC - Vedder Electronic Speed Controllers
Replies: 16
Views: 716

Re: Opinions please: VESC - Vedder Electronic Speed Controllers

Foc is slower than in bldc mode with square waves and that’s normal but never been a problem for me but u can chose the bldc mode as well The vesc is great: smooth and quiet and very versatile and easy to program. Easy to confirm If ur motor is working right and it will graph everything in real time...
by Hummina Shadeeba
Jul 31 2020 11:04am
Forum: E-Bike Technical
Topic: who uses locking bushings?
Replies: 2
Views: 97

Re: who uses locking bushings?

You can cover all along "L1" as long as "b" is accessible to tighten and at minimum all of "L" must be covered, so with a 12mm shaft that leaves a MAXIMUM of 13mm of possible exposed bushing and shaft within it that have to stick out and a minimum of maybe 4mm. It depends on what youre putting on it...
by Hummina Shadeeba
Jul 31 2020 2:59am
Forum: E-Bike Technical
Topic: who uses locking bushings?
Replies: 2
Views: 97

who uses locking bushings?

https://www.fennerdrives.com/trantorque/_/Trantorque-Mini-8mm/?s=ZnwyMzEyLDIzMTg%3d https://www.grainger.com/product/CLIMAX-METAL-PRODUCTS-Keyless-Locking-Assembly-38AT68 by my math these can hold a cog or pulley for a lot of mid-drives. why dont people use them? (maybe people dont make mid-drives a...
by Hummina Shadeeba
Jul 31 2020 2:09am
Forum: E-Bike Technical
Topic: The ultimate torque arm (For <2kW and standard axles)?
Replies: 121
Views: 9960

Re: The ultimate torque arm (For <2kW and standard axles)?

You say heat treat w a blow torch and coarse sand. For any steel? Why the coarse sand? I've been "bluing" big stainless steel nuts on my gas burner at home and produces some great colors instead of the silver. what you recommend to make the threads stronger? I really like this design but limited in ...
by Hummina Shadeeba
Jul 30 2020 11:35am
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Not necessarily: https://www.google.com/amp/s/electrek.co/2020/02/11/watch-electric-sur-ron-race-a-6x-as-powerful-gas-dirt-bike-and-place-your-bets/amp/ The storm bee is coming!! Power isn’t everything and neither is the ability to ride it home when out of power. maybe not breaking is everything. wi...
by Hummina Shadeeba
Jul 30 2020 12:07am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike
Replies: 5076
Views: 528334

Re: Sur-Ron - New Mid drive Bike

But u have to buy forty pounds.
by Hummina Shadeeba
Jul 29 2020 9:51pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Sometimes it seems like e-bike enthusiasts are systematically dragging up all the dumb ideas that have been tried for bikes and rejected time and again over the last 150 years, just because they don’t have to suffer to provide the extra power that those dumb ideas cost. Have you heard of the sur Ro...
by Hummina Shadeeba
Jul 29 2020 5:26pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Not necessarily: https://www.cyclingabout.com/belt-drivetrain-efficiency-lab-testing/ Belts aren’t just rubber Drive belts have been around the entire time that bikes have been around, and yet they still aren’t widely adopted. Why do you think that is? a belt from 120 years ago was probably leather...
by Hummina Shadeeba
Jul 28 2020 5:48pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

I haven’t come across a thread or a bike with belts yet although I haven’t looked. Were the loud ones back then running a sine or foc program? I assumed it wouldn’t sound bad. A main motive for doing it is I figure it’ll be more efficient than pretty much any other drive out there utilizing speed to...
by Hummina Shadeeba
Jul 24 2020 4:13pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

im far from done. pulleys, especially a custom made one to mount to this adaptable freewheel i have with 4 bolt holes, that i then will mount to the uber rare, no longer made i think, dual drive hub from profile racing...is expensive. all n all a pulley set up is likely to cost maybe 8x more than a ...
by Hummina Shadeeba
Jul 19 2020 5:23pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Going with (2) 21mm carbon polychain belts. In the guide you do all the math to figure how much torque the belt will see..then they say throw that number out the window and consider if it’ll be used in an abusive way such as on a motorcycle as apposed to on a conveyer belt and assume double the load...
by Hummina Shadeeba
Jul 15 2020 2:18am
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Who knows math? Before can go further I need to figure what torque is produced on the belts if I run a 160kv motor with an 11:1 gear ratio and 80 amps (24” wheel but don’t think it matters) assumIng a 3.3:1 ratio off the motor to the jackshaft and again 3.3:1 to the rear wheel? What if it’s 4:1 off ...
by Hummina Shadeeba
Jul 09 2020 6:14pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

Hold onto that question. I moved on to another bike within 24 hours. https://imgur.com/a/YrLViU3 That other bike has 14mm diameter dropouts I realized. I change my mind often and embracing it these days. I should probably be flipping bikes anyway and bike stores are out of bikes around the whole cou...
by Hummina Shadeeba
Jul 09 2020 2:01am
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

https://imgur.com/gallery/EXLRcsO https://www.profileracing.com/product/freewheel-hub-drive-bi-hub/ And I have some disk brake rotor hole to freewheel mount adapter. And some bare freewheels with just holes instead of teeth for mounting pulleys. But first I need to figure and confirm what torque and...
by Hummina Shadeeba
Jul 07 2020 6:53pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

the motor in a box is interesting but given how many people run outrunners On skateboards with no backend support why is it needed? Was it the cause of ur accident?! I figure a bigger motor will have bigger bearings and I’ll be ok maybe replace the bearings. Maybe go for the 150cc hobbyking motor or...
by Hummina Shadeeba
Jul 07 2020 3:03pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

donn wrote:
Jul 07 2020 2:28pm
Why not buy Dauntless' motors, and use them as intended, with propellers?
if I can string 6 together and make a plane I’d fly in otherwise it’s gunna go in the bike. Judging by the amount of people running this style of motor with a tensioned belt in the eskate world it seems worth a shot.
by Hummina Shadeeba
Jul 07 2020 2:23pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

I’m still on it! Getting feedback from people who make drag racing cars is nice. Tell me what you think of the plan at this point: Single gear reduction. The jack shaft would need adjustability to tension the rear belt and it’s too much complication I’m going to use more standard pulleys as the gate...
by Hummina Shadeeba
Jul 07 2020 12:10pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

https://cdn.shopify.com/s/files/1/ 8-10 years ago those motors were all the rage on ES. I have as many as 3 dozen I never sorted a use for, after reading about all the fires others had. Keep that in mind. I’ll buy some if you want to get rid of them. I’ll buy all for the right price. I think I can ...
by Hummina Shadeeba
Jul 07 2020 11:55am
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

A nice adapter: https://www.ebay.com/itm/New-6-Bolts-Disc-Brake-Adapter-5-8-THICK-Spacer-Threaded-Hub-Freewheel-Aluminum/312146302938?hash=item48ad5e97da:g:HnoAAOSwkkNbDa8v https://www.bikeradar.com/news/chain-or-belt-drive-which-is-faster/?image=3&type=gallery&gallery=1 At the end it tells how belt...
by Hummina Shadeeba
Jul 06 2020 10:40pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

MadRhino wrote:
Jul 06 2020 9:44pm
Maybe I should try building a bike with my 32k rpm Dremel instead of carving dropouts with it. :mrgreen:
What gearing u chose and why?

I’m looking at jackshafts. Thinking how to incorporate it into the potting. It should be easy enough.
by Hummina Shadeeba
Jul 06 2020 5:05pm
Forum: E-Bike General Discussion
Topic: Please advise me on a homemade motorcycle
Replies: 41
Views: 1156

Re: Please advise me on a homemade motorcycle

My assumption is there’s a lot more potential in a small motor if you spin it fast. More torque at the wheel and better efficiency, no? Well, you do start off with proportionally less torque. And then you take a significant efficiency hit with each stage of reduction. So at best, you’re looking at ...