Search found 561 matches

by DanGT86
Feb 24, 2018 8:53 pm
Forum: Items for Sale - New
Topic: FUTR frames, Adaptto Controllers, Eaton Chargers, batteries
Replies: 308
Views: 42637

Re: FUTR frames, Adaptto Controllers, Eaton Chargers, batteries

I also hope Mobipus and Adaptto do well as companies. Offering small enough minimum quantities for us hobbyists would be awesome as well. Something to keep in mind when criticizing these companies for going oem only or not listening to their customers, is just how expensive and labor intensive produ...
by DanGT86
Feb 23, 2018 10:13 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Specs Performance for 80-100 motor ?
Replies: 43
Views: 973

Re: Specs Performance for 80-100 motor ?

I found a Gates Belt selection HP chart once. I'll look for it. I think in your case you are stuck with 2 reduction stages before the chainring. You want as much motor rpm as possible so even at 16s with the 70kv you are going to need 35:1 reduction to get a reasonable pedal cadence of 100rpm or les...
by DanGT86
Feb 23, 2018 1:02 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Specs Performance for 80-100 motor ?
Replies: 43
Views: 973

Re: Specs Performance for 80-100 motor ?

I am thinking about a block of Delrin that is machined on the inside to match the frame and with grooved outer in order for the hose clamp to wrap as far around the downtube/delrin as much as possible . Think there is a cheaper solution ? DanGT86 is making a case for using 2 stage reduction , Howev...
by DanGT86
Feb 23, 2018 10:21 am
Forum: E-Bike Non-hub Motor Drives
Topic: Specs Performance for 80-100 motor ?
Replies: 43
Views: 973

Re: Specs Performance for 80-100 motor ?

Obviously the single stage of reduction would be ideal. But you have to remember that the power of the motor is closer to 7kw at 7000rpm or more. If you go with a lower kv motor you have to feed it lots of volts to get the rpm back up. If you want close to 7kw you are pretty much stuck with 7-8k rpm...
by DanGT86
Feb 21, 2018 10:43 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike from China
Replies: 514
Views: 27634

Re: Sur-Ron - New Mid drive Bike from China

That must be the one I saw too. Makes no sense if the pedals are only there as a legality because the bike performance will suffer and the compliance speed limiter is going to be wrong with the tiny sprocket. I figured I accidentally fast forwarded through the jackshaft re-gearing.
by DanGT86
Feb 21, 2018 8:48 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike from China
Replies: 514
Views: 27634

Re: Sur-Ron - New Mid drive Bike from China

Sorry if I missed the answer but does the pedal kit come with parts to re-gear the primary drive or does it really just reduce the rear sprocket size without correcting for it elsewhere?
by DanGT86
Feb 18, 2018 4:44 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Looks like an LMX Copy
Replies: 46
Views: 2128

Re: Looks like an LMX Copy

That is some awesome looking work at every stage! I really love the look of it and the overmachining of parts past the point of function. I think it represents a very good work ethic and pride in the product. The thing I really dont understand is going through the huge design expense and effort to s...
by DanGT86
Feb 13, 2018 3:31 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

I think a 63mm motor would be fun if you plan to pedal along most of the time. Small motors like these and the 63mm can be a bit tricky to gear down enough for normal pedal cadence rpm. I don't know my wh/km yet. I just don't have much time riding this setup yet. I can't pedal this bike at the momen...
by DanGT86
Feb 13, 2018 12:02 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

Seems like a big difference in position 15 vs 3-5deg.

Id like to see your math on that. I really dont understand hall timing and positioning.
by DanGT86
Feb 13, 2018 11:40 am
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

Great. I'll try that first. You mean physically 3-5 deg around the full 360 of the can or 3-5deg electrical timing? Does it matter which stator teeth the halls are positioned relative to? For example the windings on each 2 teeth are the same phase. So if a hall was in between two teeth of the same p...
by DanGT86
Feb 12, 2018 5:30 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

I'm trying to get back on this project before spring and with any luck I want to race with it in May. I have a 3 month old daughter so I've had zero time to mess with it since November. Anyway, I'm still trying to figure out how to find the optimal hall sensor position. As mentioned above somewhere,...
by DanGT86
Feb 12, 2018 5:12 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

If you are just comparing different motor winds you might be concerning yourself with the wrong data. As far as I know, you should aim for the highest rpm you can practically make a reduction for. If you want a reliable 6kw out of an 80100 you need to get it up in the 6-8000 RPM range. Somewhere aro...
by DanGT86
Feb 12, 2018 10:45 am
Forum: E-Bike Non-hub Motor Drives
Topic: Custom 80100 RC Drive on Genesis Swing-arm
Replies: 21
Views: 1291

Re: Custom 80100 RC Drive on Genesis Swing-arm

It was a super common motor a few years back so there are tons of threads with various detailed specs. The problem is you just have to find them. Google searching this site seems to work better than using the ES search feature. I got my motor from Luna. They usually have them in stock but they don't...
by DanGT86
Feb 07, 2018 8:15 am
Forum: E-Bike Technical
Topic: Using a low votage switch. ok with pre-charge?
Replies: 7
Views: 154

Re: Using a low votage switch. ok with pre-charge?

I see. Makes perfect sense. So then dc breakers could be implimenting something as simple as a a heavier spring to get the contacts further away from eachother or broken faster? Perhaps my pre-charge resistor would stop it from arcing accross the contacts druing a trip. I bet the current would murde...
by DanGT86
Feb 06, 2018 10:44 pm
Forum: E-Bike Technical
Topic: Using a low votage switch. ok with pre-charge?
Replies: 7
Views: 154

Re: Using a low votage switch. ok with pre-charge?

Thanks. Thats a good point about the arcing during the breaker tripping. That would be exactly the type of high load situation i'm trying to avoid when already outside of the rec voltage range. I could see that being really hard on contacts not designed for it. Probably better to use a propper fuse ...
by DanGT86
Feb 06, 2018 11:13 am
Forum: E-Bike Technical
Topic: Using a low votage switch. ok with pre-charge?
Replies: 7
Views: 154

Using a low votage switch. ok with pre-charge?

I'm wanting to use a 100-200 amp rated switch/circuit breaker on my battery box. I would also use a precharge resistor in parallel with the switch. The idea would be to connect the pack, allow the controller caps to pre-charge for a few seconds, then flip the switch. A breaker would be a nice additi...
by DanGT86
Feb 01, 2018 8:25 am
Forum: E-Bike Non-hub Motor Drives
Topic: Sur-Ron - New Mid drive Bike from China
Replies: 514
Views: 27634

Re: Sur-Ron - New Mid drive Bike from China

JRH, Your PMs are disabled so I tried to contact you through the HH website. I'll be visiting the offroad park and motocross track near columbia in the next month or two. I was hoping I could talk you into meeting us out there with the Sur-Ron. I'd love to try it out and I think you'd have a blast r...
by DanGT86
Jan 31, 2018 5:27 pm
Forum: E-Bike Non-hub Motor Drives
Topic: Kuberg Free Rider
Replies: 231
Views: 24712

Re: Kuberg Free Rider

HK has the 4s 10ah multistars in the US warehouse with free shipping for $40 right now. That's a 20s 10ah pack for $200!!

I just got some. I guess I'll just keep dreaming of an 18650 pack. Every time I swear off Lipo they go on sale! :evil:
by DanGT86
Jan 29, 2018 10:23 pm
Forum: Battery Technology
Topic: First Vruzend build.. voltage just short of 42v
Replies: 21
Views: 579

Re: First Vruzend build.. voltage just short of 42v

Sounds a lot better. If its stopping at a different voltage than your other packs using the same charger then that would point to the BMS terminating the charge. Thats pretty close to 42 so they'll probably even out better over time since they get dome bms balancing on each charge. I'd say your clos...
by DanGT86
Jan 17, 2018 10:29 pm
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 25
Views: 1696

Re: middrive motor, small and powerful -> Neu 8057/75 or??

That risse hub does look a bit thin radially around the bolt holes but the pic on their site looks a little better. The way the hub tapers back towards the spoke flange appears to give it a little more support. What I dont know right off hand is the axial spacing between a standard front disk flange...
by DanGT86
Jan 16, 2018 10:21 pm
Forum: Motor Technology
Topic: Neumotor 8057/75 middrive project, belt drive, adding halls, 10kW+
Replies: 25
Views: 1696

Re: middrive motor, small and powerful -> Neu 8057/75 or??

So excited to see your results with this motor. I have been wanting one for months ever since I stumbled upon the website. Is the intro pricing still available? If these even make half of the power the site claims they would be awesome on anything short of a full size motorcycle. Are you mounting Ha...
by DanGT86
Jan 15, 2018 11:36 pm
Forum: Battery Technology
Topic: First Vruzend build.. voltage just short of 42v
Replies: 21
Views: 579

Re: First Vruzend build.. voltage just short of 42v

good info so far... no balance charger as I havent needed one..yet... i have 2 chargers i use but mainly for these big packs I use a 42v 5amp charger...im not sure exactly how it works nor what exactly triggers them to stop charging aside from the bms limiting a max input... but that would be anoth...
by DanGT86
Jan 15, 2018 7:03 pm
Forum: Battery Technology
Topic: First Vruzend build.. voltage just short of 42v
Replies: 21
Views: 579

Re: First Vruzend build.. voltage just short of 42v

Looks like string 1 and 10 are definitely outliers. Can you charge them separately? Do you have an rc balance charger or adjustable power supply you could use to catch them up with the others? Maybe the the highest cells triggered the bms to shut things down before the whole thing caught up. Some ch...
by DanGT86
Jan 15, 2018 3:22 pm
Forum: Battery Technology
Topic: First Vruzend build.. voltage just short of 42v
Replies: 21
Views: 579

Re: First Vruzend build.. voltage just short of 42v

Can you check each group with a volt meter? that would surely tell you if there is a problem in the pack vs a prob with your charger.
by DanGT86
Jan 12, 2018 12:19 am
Forum: E-Bike Non-hub Motor Drives
Topic: Fitting freewheels to splined freehub drivers
Replies: 639
Views: 48975

Re: Fitting freewheels to splined freehub drivers

From a different vendor but looks promising on the 3/32 chain. C8519AF1-8134-4D34-8FA3-7F8AE2AED7A6.jpeg This one is a dual bearing type. Maybe it would be like the sbp hd and handle transmitting power while freewheeling on a crank setup? https://www.trial-bikes.com/en/bonz-pro-light-1359-cassette-f...