Search found 56 matches

by Timelord
May 19 2019 1:15pm
Forum: E-Bike Non-hub Motor Drives
Topic: Luna Fixed Stealth 400w torque sensing mid-drive bike
Replies: 1
Views: 631

Luna Fixed Stealth 400w torque sensing mid-drive bike

Having a bit of a hard time wrapping my head around this one. https://lunacycle.com/luna-fixed-stealth-ebike I assume the motor has a rotor and planetary gears mounted on the bottom bracket spindle. That's kind of neat. Beats having a separate, bulbous motor casing sticking out like Bafang, Cyclone ...
by Timelord
Nov 06 2018 11:48pm
Forum: E-Bike Non-hub Motor Drives
Topic: My RC Mid Drive with Single Stage Reduction
Replies: 286
Views: 21128

Re: My RC Mid Drive with Single Stage Reduction

This chainring might just be big enough for a medium power single reduction with a bicycle chain. Serious. Might be OK on a road bike as long as it didn't drag in corners. There are custom sprocket makers out there who can make these... Big Chainring.jpg My bicycle gearing is 22-40 on front and 11-...
by Timelord
Oct 17 2018 11:58pm
Forum: Battery Technology
Topic: Fireproof charging bags
Replies: 5
Views: 416

Re: Fireproof charging bags

This is the only brand (the original inventor) that actually contains the fire and doesn't disintegrate. None contain the smoke. liposack.com More expensive than the rest but in this case, you get what you pay for. They don't make Liposacks big enough for decent size ebike battery packs. They're de...
by Timelord
Oct 16 2018 7:09pm
Forum: Battery Technology
Topic: Fireproof charging bags
Replies: 5
Views: 416

Fireproof charging bags

Has anyone actually used any of these and had a battery fire contained by the pouch? I know one practice is to charge inside a steel ammo can, but it's hard to find one of those big enough for larger battery packs. I can charge inside my oven, which would be safe and free, but not a convenient locat...
by Timelord
Aug 12 2018 9:45pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5773
Views: 474194

Re: New "TSDZ2 Torque Sensor Central Motor"

Sigh. I give up. Not going to read this topic anymore since it's 99% hacking talk that's of no interest to most purchasers of the unit.
by Timelord
Jul 22 2018 4:41pm
Forum: Items for Sale - Used
Topic: Voloci E-Bike Liquidation
Replies: 21
Views: 2736

Re: Voloci E-Bike Liquidation

I had a Voloci back in the day. Decent speed, but the range was pretty bad with the NiMH battery. It was no fun to have the motor shut down right in the middle of a turn on a busy street. Should be better if you can rip the battery pack apart and rebuild it with lithium cells and the necessary elect...
by Timelord
Jul 13 2018 10:00pm
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5773
Views: 474194

Re: New "TSDZ2 Torque Sensor Central Motor"

I find the open firmware development intriguing, but is there any way the discussion of it can be shifted over to the other topic that casainho started for it? This general topic for the TSDZ2 has become overrun with that discussion, which may give new readers the impression that hacking the motor s...
by Timelord
May 23 2018 9:56pm
Forum: E-Bike General Discussion
Topic: Any suggestions for reliable battery supplier?
Replies: 14
Views: 968

Re: Any suggestions for reliable battery supplier?

Thanks. Now Luna is back in consideration. And of course, just when I wrote that they no longer seem to have the 14AH pack, they're back in stock. It may or may not actually meet the claimed 50A spec, but since I'm only considering a ~750w kit, even if it's off by 50%, it should be plenty.
by Timelord
May 20 2018 11:16am
Forum: E-Bike General Discussion
Topic: Any suggestions for reliable battery supplier?
Replies: 14
Views: 968

Re: Any suggestions for reliable battery supplier?

Again, I'm flexible for now. I'm not asking for you guys to choose a specific battery for me, but a supplier that can be trusted. Maybe I'll choose more capacity. Maybe I'll go with higher rate. I can make those decisions later. For now, I just want to know what dealers to look at. Surely somebody m...
by Timelord
May 20 2018 11:05am
Forum: E-Bike Non-hub Motor Drives
Topic: New "TSDZ2 Torque Sensor Central Motor"
Replies: 5773
Views: 474194

Re: New "TSDZ2 Torque Sensor Central Motor"

Nuvinci has already shown plans to integrate their cvt into a mid drive motor. I wouldn't hold my breath for that. I doubt Fallbrook is going to be much different or do much better if and when they emerge from bankruptcy. ...Bafung... Are you always misspelling this for a reason? I trust it's not i...
by Timelord
May 20 2018 10:46am
Forum: E-Bike General Discussion
Topic: Any suggestions for reliable battery supplier?
Replies: 14
Views: 968

Re: Any suggestions for reliable battery supplier?

Well, I'm not picky. This won't be for a very high power kit. Just looking for a supplier so I can peruse the selection on their website. I've seen people say not to use Alibaba/Aliexpress and for some reason, there seems to be a lot of hate for Luna around here, so I'm looking for other options.
by Timelord
May 19 2018 5:41pm
Forum: E-Bike General Discussion
Topic: Any suggestions for reliable battery supplier?
Replies: 14
Views: 968

Any suggestions for reliable battery supplier?

Interested in a 18650 battery pack, 52v, at least 12AH but not too much more. Looking for something not outrageously priced, under $700. I'll be carrying the pack in a seat bag, so don't need a dolphin case. I rather like how small and light Luna's Mighty Mini Cube is. They used to have a 14AH versi...
by Timelord
Feb 21 2018 6:48pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 184
Views: 26695

Re: Critique this performance velomobile idea

But it does need to be "self-propelled" to meet the definition of "motor assisted scooter". No, it doesn't. The statute says it has to have "the ability to be propelled by human power alone." That just means it needs a bike drivetrain that you can pedal if you have to. In the long run, considering ...
by Timelord
Feb 19 2018 8:46pm
Forum: E-Bike General Discussion
Topic: cable operated hydraulic brakes
Replies: 34
Views: 1822

Re: cable operated hydraulic brakes

I have TRP Spyke brakes with Avid FR5 levers, Jagwire housing and 203mm rotors. They don't feel terrible to me.
by Timelord
Feb 19 2018 7:29pm
Forum: E-Bike General Discussion
Topic: Persecuting E-Bikes in New York City
Replies: 220
Views: 21161

Re: Persecuting E-Bikes in New York City

One local politician gets it: Rafael Espinal, a member of the City Council, wrote an op-ed in the NY Daily News. http://www.nydailynews.com/opinion/pedal-metal-electric-bicycles-article-1.3818945 Every day, we are seeing developments in clean energy technology that move us toward renewable sources a...
by Timelord
Feb 19 2018 1:48am
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 184
Views: 26695

Re: Critique this performance velomobile idea

The advantage of a gas engine is the 300 mile range he wanted without needing several thousand dollars worth of batteries or the hours to recharge them between rides. Piece of cake to pour more gas into the motor in a minute and get going again. For distances of up to 50 miles or so, an electric mot...
by Timelord
Feb 18 2018 6:35pm
Forum: E-Bike General Discussion
Topic: Critique this performance velomobile idea
Replies: 184
Views: 26695

Re: Critique this performance velomobile idea

This will probably be considered heresy here on ES, but have you considered mounting a gas engine on it instead? That way, it wouldn't need to comply with TX ebike law anymore, but rather as a "motor-assisted scooter." The law is a bit more flexible for those. The only limits are 40cc displacement a...
by Timelord
Feb 18 2018 10:57am
Forum: E-Bike General Discussion
Topic: cable operated hydraulic brakes
Replies: 34
Views: 1822

Re: cable operated hydraulic brakes

I don't like rim brakes, but that failure doesn't look like it was caused by brake wear. The outside sidewall is all black rather than bare alloy, so the anodizing is intact, something a worn rim wouldn't have. Looks more like it was a simple weakness caused by a manufacturing problem.
by Timelord
Feb 17 2018 10:17am
Forum: E-Bike General Discussion
Topic: [How-To Help] Install univ torque arm on Vivanti MTB
Replies: 6
Views: 476

Re: [How-To Help] Install univ torque arm on Vivanti MTB

Keep a close eye on that torque arm. Grin says they were the originators of that design but discontinued it eight years ago because it could break due to point contact at the corners of the hose clamp. http://www.ebikes.ca/product-info/torque-arms.html I would inspect it regularly to make sure the h...
by Timelord
Jan 27 2018 11:08am
Forum: E-Bike General Discussion
Topic: Rear hub spacing - compromise?
Replies: 13
Views: 987

Re: Rear hub spacing - compromise?

Assuming a 14.5" chainstay length (axle to CS bridge) and CS-mounted disk brakes, 2.5mm spread per side comes out to 0.39ยบ change in CS angle, creating a roughly 0.34mm (0.014") deviation in lateral distance over the 51mm space between the mounting bolts of a disc brake, according to my back of enve...
by Timelord
Jan 26 2018 12:47am
Forum: E-Bike Non-hub Motor Drives
Topic: Warren's 350 MAC mid-drive (finally) recumbent
Replies: 265
Views: 47731

Re: Warren's 350 MAC mid-drive (finally) recumbent

and how close to 21700 availability are we really? That's a great question. There's an article from mid-2017 on electricbike.com calling them the up and coming thing, written by none other than spinningmagnets. Asked if we might finally see some aftermarket packs a year later. Not only silence, the...
by Timelord
Jan 26 2018 12:20am
Forum: E-Bike General Discussion
Topic: Rear hub spacing - compromise?
Replies: 13
Views: 987

Re: Rear hub spacing - compromise?

Bend a steel bike. Bend out the stays, then bend in on the dropout plate to get parallel again. No problem. That's not the question. Of course I can cold set it to 145. But then it would never fit a 135 again. 10mm is a lot of distance to bridge. With 140, it would be 5mm either way, or 2.5mm (1/10...
by Timelord
Jan 25 2018 12:49am
Forum: E-Bike General Discussion
Topic: Rear hub spacing - compromise?
Replies: 13
Views: 987

Rear hub spacing - compromise?

I'm considering a rear hub motor for a new build, but that motor has an OLD of 145mm, and I don't really want a bike that will fit only that dimension. I'm thinking maybe cold set the frame to 140mm. That way, I can pull it apart by hand for the extra 5mm for the hub motor or squeeze it 5mm with the...
by Timelord
Dec 25 2017 12:54pm
Forum: E-Bike Non-hub Motor Drives
Topic: ISIS spider?
Replies: 3
Views: 711

ISIS spider?

Helping someone who wants a Bafang Ultra Max drive. Since he can't weld this into a DIY aluminum frame, he's planning to bolt the mounting plate in the middle of a DIY steel recumbent frame as an intermediate drive. But that means he'll need an ISIS spider without a crankarm to attach to the Ultra M...