DJI Drive system

Wisper Bikes

Trade Member
Apr 11, 2007
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Sevenoaks Kent
Good afternoon all,

Does anyone have any experience regarding the DJI Avinox motor?

Most of us know DJI from their drones, their mid drives look amazing, any thoughts please.

/https://www.dji.com/uk/avinox

All the best, David
 
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matthewslack

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I think it turned up in a motor comparison test on an MTB YouTube channel or website. I saw it before Christmas.

Hugely more powerful than everything else on the test, taking the Michael if rated at 250W!
 

matthewslack

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Nov 26, 2021
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Thanks Matthew I will have a look.
More memories surfacing: I think max power 1000W, torque well over 100Nm and a user accessible setting to set 'street' mode, details of which I don't recall.

The test I watched included a timed run up a good off-road hill, and the DJI was tens of % faster than anything else.

In full power mode, SurRon levels of performance, and potentially very destructive of trail park routes.
 

Wisper Bikes

Trade Member
Apr 11, 2007
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Sevenoaks Kent
Thanks again Matthew.

We have been offered the distribution of a brand that is launching bikes with the DJI Avinox motor. From what I can ascertain reliability is excellent and it outperforms Bosch and the other big mid motor brands. I’ll be getting samples in the next couple of months. DJI are massive producers of small powerful drone motors and have entered the market with what looks like a winner.

Motinova seem like another to watch.

All the best, David
 

guerney

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Sep 7, 2021
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DJI's is likely more hackable than Bosch. Carry on.
 

Hoppy33

Finding my (electric) wheels
Nov 29, 2023
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Does it have a throttle option? AFAIK Bafang is the only mid-motor option with a throttle, which rules out 95% of mid-motor e-bikes for me.

I’ve long been concerned about the controlling influence of Bosch’s dominant market share so any competition is good, but on the other hand the DJI’s astonishing power, so enthusiastically received in the video linked above, raises a lot of uncomfortable questions. I wonder if DJI will be offering test rides to the Ramblers Association 100,000 members?
 

Hoppy33

Finding my (electric) wheels
Nov 29, 2023
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Every single motor I bought was delivered with a throttle and none of them is Bafang.

Don't be shy. Ask.
This is not a quiz! The point I’m making is that mid-motor e-bikes with a throttle are very hard to find. In the UK, I’m only aware of Wisper and Cyrusher as mainstream brands. There may well be others but if so they’re pretty well hidden and can only account for a very small percentage of sales. The throttle-less Bosch dominates.

I’m not being shy. Surely it’s obvious what many influential walking/rambling/hiking groups will think of this new DJI trail-shredder. It’s a motorbike.
 

Az.

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Apr 27, 2022
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This is not a quiz! The point I’m making is that mid-motor e-bikes with a throttle are very hard to find. In the UK, I’m only aware of Wisper and Cyrusher as mainstream brands.
Wisper and Cyrusher don't make motors. They offer a quite unique service on the market. They take e-bikes to approved testing station to get a certificate. You can do it yourself to legalize throttle if you want.

Surely it’s obvious what many influential walking/rambling/hiking groups will think of this new DJI trail-shredder. It’s a motorbike.
As long as your e-bike is legal, it is irrelevant what they think.
I am quite confident Wisper won't be selling illegal e-bikes at any point in time.
 
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Hoppy33

Finding my (electric) wheels
Nov 29, 2023
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I had a quick look at Cyrusher website and indeed many bikes they sell are mopeds. I would stay away from them.
Off topic, but to be fair to Cyrusher they have an interesting range of models with unusual specs - like 20/26in fat tyre e-bikes with step-thru frames, full-suspension and powerful mid-motors plus throttle. Nice showroom, helpful staff, good coffee, and a great location for test rides. They are sold as UK legal though easy to delimit them.

I came close to buying two (one for the missus) but had a change of heart over the specs I really wanted.
 

Az.

Esteemed Pedelecer
Apr 27, 2022
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Off topic, but to be fair to Cyrusher they have an interesting range of models with unusual specs - like 20/26in fat tyre e-bikes with step-thru frames, full-suspension and powerful mid-motors plus throttle. Nice showroom, helpful staff, good coffee, and a great location for test rides. They are sold as UK legal though easy to delimit them.
Like this one?


52V battery is illegal and I am not sure what they mean by 250W limited motor. There is no such thing. Motor is either rated 250W or not. You can't take Bafang HD for example and limit it to 250W to make it legal.
 

matthewslack

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52V battery is illegal and I am not sure what they mean by 250W limited motor. There is no such thing. Motor is either rated 250W or not. You can't take Bafang HD for example and limit it to 250W to make it legal.
The DJI will be interesting to watch come to the market, because it seems to be just as powerful as BBSHD.

Are bike manufacturers really going to claim a 250W rating for it? I might be writing letters if that happens.
 

matthewslack

Esteemed Pedelecer
Nov 26, 2021
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This is not a quiz! The point I’m making is that mid-motor e-bikes with a throttle are very hard to find. In the UK, I’m only aware of Wisper and Cyrusher as mainstream brands. There may well be others but if so they’re pretty well hidden and can only account for a very small percentage of sales. The throttle-less Bosch dominates.

I’m not being shy. Surely it’s obvious what many influential walking/rambling/hiking groups will think of this new DJI trail-shredder. It’s a motorbike.
Bosch/Yamaha/Shimano mid-drive systems are all about the torque sensor for control, which needs a bit of 'change down before you stop' discipline, but otherwise have no need of a throttle. The startup is almost instant and only riders who cannot contribute any input will have difficulty getting away in the higher levels of assistance.

Bafang BBS are the common cadence sensored mid-drive motors, but not much used on off the shelf bikes.
 

Hoppy33

Finding my (electric) wheels
Nov 29, 2023
21
10
Bosch/Yamaha/Shimano mid-drive systems are all about the torque sensor for control, which needs a bit of 'change down before you stop' discipline, but otherwise have no need of a throttle. The startup is almost instant and only riders who cannot contribute any input will have difficulty getting away in the higher levels of assistance.

Bafang BBS are the common cadence sensored mid-drive motors, but not much used on off the shelf bikes.
A torque sensor is nothing more than a throttle operated by your leg, and the main problem with that is it’s useless when your feet are on the ground.

First and foremost, a throttle is a safety feature - for safe launching and low speed manoeuvring when you have either one foot down, or both. I can see how a torque sensor is perfect for mountain bikers but for everyone else a throttle is either very desirable or essential. Manufacturers ignore that at their peril.
 

guerney

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Sep 7, 2021
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I can see how a torque sensor is perfect for mountain bikers but for everyone else a throttle is either very desirable or essential.
I've never tried torque sensored, don't want to, sounds suspiciously like hard work to me. I've become accustomed to not having a throttle on my BBS01B cadence sensored mid-drive 20" Dahon folding bike. If I can't change down before stopping, because some pedestrian troubled by the cost of living crisis has jumped in front attempting suicide by bicycle, I can stand on a pedal to get moving - I only need to turn the crank 30 degrees for assistance to activate. This is possible, on my bike at least, even when starting on a high gear from a standing start up most hills. I believe the same small angle of activation is possible with KT cadence sensored kit conversions.
 
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