Search found 765 matches
- Feb 28 2021 12:03am
- Forum: EBike General Discussion
- Topic: E-S LMX 64 Bike Owners
- Replies: 1090
- Views: 99454
Re: E-S LMX 64 Bike Owners
A concentric drive won't have any anti-squat behavior during acceleration which reduces traction, especially on rough ground.
- Feb 27 2021 8:12pm
- Forum: EBike General Discussion
- Topic: E-S LMX 64 Bike Owners
- Replies: 1090
- Views: 99454
Re: E-S LMX 64 Bike Owners
Lightweight motorcycle with pedals vs powerful ebike.
I actually wouldn't want a concentric drive, especially not shared with the pedals. You lose the ability to control squat.
I actually wouldn't want a concentric drive, especially not shared with the pedals. You lose the ability to control squat.
- Feb 27 2021 8:10pm
- Forum: EBike General Discussion
- Topic: Build pack onto and around frame tube, rather than inside?
- Replies: 13
- Views: 123
Re: Build pack onto and around frame tube, rather than inside?
Measure the frame then 3D print cell holders which snap around it with the cells arranged radially.
- Feb 27 2021 8:08pm
- Forum: EBike General Discussion
- Topic: Please help me critique my dream ebike.
- Replies: 16
- Views: 202
Re: Please help me critique my dream ebike.
Put all the motor mass into either a big hub or big mid-drive. Running both gives the worst of both without any advantages.
- Feb 23 2021 8:01pm
- Forum: E-Vehicles General Discussion
- Topic: Motorsport, Racing, The Future
- Replies: 18
- Views: 334
Re: Motorsport, Racing, The Future
There is an EV offroad racing championship going live this year:
https://www.extreme-e.com/
They ran the last stage of Dakar as a demo.
https://www.extreme-e.com/
They ran the last stage of Dakar as a demo.
- Feb 23 2021 1:52am
- Forum: E-Vehicles General Discussion
- Topic: Motorsport, Racing, The Future
- Replies: 18
- Views: 334
Re: Motorsport, Racing, The Future
To be clear I'm talking about grassroots motorsport: AutoX, karting, MX, cross country motorcycle and similar. The kind of thing people do as a hobby. I remember karting in mall parking lots and riding crosscountry motorcycles practically in town. People didn't used to consider silence a right. Thos...
- Feb 23 2021 12:14am
- Forum: E-Vehicles General Discussion
- Topic: Motorsport, Racing, The Future
- Replies: 18
- Views: 334
Re: Motorsport, Racing, The Future
Both are low on the totem poll, motor sport events are usually in out of the way venues, except for the monster truck series which is in the same stadiums sports are played because they are located in centrally located areas with access via mainline transit routes. Race tracks are almost always on ...
- Feb 22 2021 4:47pm
- Forum: Electric Aircraft
- Topic: Battery pack selection for self-launching glider
- Replies: 7
- Views: 159
Re: Battery pack selection for self-launching glider
A very marginal battery could end up not working at all after losing just 20% capacity. So cutting it really close could result in a very short usable life span. Then again from what I understand once you've taken off a sail plane can climb very efficiently. Throttling down once you've reached a saf...
- Feb 22 2021 1:04pm
- Forum: Electric Aircraft
- Topic: Battery pack selection for self-launching glider
- Replies: 7
- Views: 159
Re: Battery pack selection for self-launching glider
Finding a way to eject the pack in event of a fire is much easier with the smaller pack.
Keep in mind that using Lipo at high drain will reduce pack life way down. But then again how many flights per year are you going to get?
Keep in mind that using Lipo at high drain will reduce pack life way down. But then again how many flights per year are you going to get?
- Feb 22 2021 12:54pm
- Forum: E-Vehicles General Discussion
- Topic: Motorsport, Racing, The Future
- Replies: 18
- Views: 334
Re: Motorsport, Racing, The Future
I think EVs are the only thing which will save motorsport from both noise and pollution concerns.
- Feb 18 2021 9:34pm
- Forum: EBike Technical
- Topic: 85 Nm torque vs 160 Nm torque
- Replies: 8
- Views: 370
Re: 85 Nm torque vs 160 Nm torque
If you are doing any jumping you'll break the BBSHD bottom bracket.
- Feb 14 2021 6:23pm
- Forum: EBike Non-hub Motor Drives
- Topic: My Bafang Ultra Mountain Bike! Frey AM1000
- Replies: 2372
- Views: 321832
Re: My Bafang Ultra Mountain Bike! Frey AM1000
Hello everybody, after reading a lot about ebike conversions and failing to find a satisfying solution to convert my all mountain bike because of battery placement problems, I discovered the Frey brand thanks to this thread as a value for money option featuring the powerful Bafang M620 motor. So no...
- Feb 04 2021 10:02pm
- Forum: EBike Non-hub Motor Drives
- Topic: QS 3000 138 motor bike installation generalized
- Replies: 15
- Views: 1016
Re: QS 3000 138 motor bike installation generalized
Skip the bicycle freehub if you intend to push any real power. Just get the extremely robust and inexpensive Oset hub which has a 6 bolt pattern on each side, they sell a spider to mount kart sprockets directly from there.
- Feb 01 2021 12:13pm
- Forum: EBike General Discussion
- Topic: 3kw eBike Build Questions
- Replies: 26
- Views: 1074
Re: 3kw eBike Build Questions
BBSHD won't do what you want and a hub won't either. You need to consider the Lightning Rods LHD or a similar build.
- Feb 01 2021 12:10pm
- Forum: EBike Non-hub Motor Drives
- Topic: Rear Heavy Duty freewheel ?
- Replies: 9
- Views: 432
Re: Rear Heavy Duty freewheel ?
They also make direct fit sprockets and carriers to mount kart sprockets. Super useful parts and relatively cheap.
- Jan 31 2021 6:42pm
- Forum: EBike General Discussion
- Topic: Durable 10 speed cassette and chain?
- Replies: 21
- Views: 390
Re: Durable 10 speed cassette and chain?
I had a big reply typed and it didn't post. Basically the weak point in a chain is the rollers. They are the same width for all multi speed bike chains. Only the side plates are different and those don't typically wear. The ebike specific group sets use 11 or 10spd chains and spacing with fewer cogs...
- Jan 31 2021 3:58pm
- Forum: EBike Non-hub Motor Drives
- Topic: Rear Heavy Duty freewheel ?
- Replies: 9
- Views: 432
Re: Rear Heavy Duty freewheel ?
An OSET hub is probably easier and built for the task:
https://shop.osetbikes.com/hubs
https://shop.osetbikes.com/hubs
- Jan 30 2021 9:11pm
- Forum: EBike General Discussion
- Topic: 3kw eBike Build Questions
- Replies: 26
- Views: 1074
Re: 3kw eBike Build Questions
The issue is the unsprung weight of the hub. Any offroading will be severely compromised.
- Jan 30 2021 7:45pm
- Forum: EBike General Discussion
- Topic: Durable 10 speed cassette and chain?
- Replies: 21
- Views: 390
Re: Durable 10 speed cassette and chain?
Modern ebike specific 10 speed stuff is stronger than cheap 7/8spd.
- Jan 30 2021 7:17pm
- Forum: EBike General Discussion
- Topic: 3kw eBike Build Questions
- Replies: 26
- Views: 1074
Re: 3kw eBike Build Questions
How much offroad use do you expect?
- Jan 29 2021 2:45pm
- Forum: EBike Non-hub Motor Drives
- Topic: Rear Heavy Duty freewheel ?
- Replies: 9
- Views: 432
Re: Rear Heavy Duty freewheel ?
I mean no freewheel at all. That part is to mount a freewheel onto a brake rotor mount, or so it looks.
- Jan 24 2021 11:42pm
- Forum: EBike Non-hub Motor Drives
- Topic: Rear Heavy Duty freewheel ?
- Replies: 9
- Views: 432
Re: Rear Heavy Duty freewheel ?
I would run a fixed rear gear with that much power. Any freewheel will be both a source of failure and also impair how precisely the power is applied. Modern controllers can provide a virtual freewheel for coasting if needed although personally I'd rather have a little engine braking.
- Jan 24 2021 11:33pm
- Forum: EBike Non-hub Motor Drives
- Topic: Sur-Ron - New Mid drive Bike
- Replies: 5396
- Views: 604856
Re: Sur-Ron - New Mid drive Bike
Dishing wheels is very common on motorcycles, shouldn't be a problem.
Likewise running a smaller front tire is the norm on motorcycles. A regular 29er would probably work.
Likewise running a smaller front tire is the norm on motorcycles. A regular 29er would probably work.
- Jan 23 2021 11:32am
- Forum: EBike General Discussion
- Topic: Giant Trance 3: How is this for a powerful conversion?
- Replies: 15
- Views: 512
Re: Giant Trance 3: How is this for a powerful conversion?
Way too expensive for a 26", worth maybe half that. Also no real point in using a full suspension bike if going with a hub motor. Why isn't full suspension compatible with a hub motor? The unsprung weight of the motor makes it unsuitable offroad. By the time you modify the suspension to handle...
- Jan 23 2021 1:53am
- Forum: EBike General Discussion
- Topic: Giant Trance 3: How is this for a powerful conversion?
- Replies: 15
- Views: 512
Re: Giant Trance 3: How is this for a powerful conversion?
Way too expensive for a 26", worth maybe half that.
Also no real point in using a full suspension bike if going with a hub motor.
Also no real point in using a full suspension bike if going with a hub motor.