Mine is like the second. Doesnt rattle by hand. Rattles on the trail on rough sections though. But i am sensitive to sound, much more than those i ride with. I usually hear a loose bolt on their bike before they do themselves.I saw that, in this short
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Is the AMFLOW this rattley?
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I do wonder how much of it is the camera/mic setup picking up certain sounds and representing them louder than they are in reality.
My Amflow is as quiet as Sekta's in this video:
Like I listen back to the first video posted and I'm not even sure about what I'm hearing - there is a rattle/knocking noise there but it sounds like (to me) it's coming from the mic setup rather than the bike - as in, the mic itself knocking against some other gear, or perhaps a slightly ill fitting mudguard rattling against the fork bridge or something.
My Amflow is as quiet as Sekta's in this video:
Like I listen back to the first video posted and I'm not even sure about what I'm hearing - there is a rattle/knocking noise there but it sounds like (to me) it's coming from the mic setup rather than the bike - as in, the mic itself knocking against some other gear, or perhaps a slightly ill fitting mudguard rattling against the fork bridge or something.
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juggernaut
Member
What’s the general cause of rattle motors from various manufacturers, sprag clutch?
Bogdan_CH
Active member
Freewheel movement when not engaged. I honestly though the fix was going non metalic gears, but seems Bosch just tricked other players on the market with this (DJI also uses non metalic gearing) as that wasn't the main culprit.
Correct, different motors use slightly different systems, but it's that disengagement of the motor drive that rattles. hence not doing it when pedaling
juggernaut
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Non metallic gears only make the motor quieter when engaged.
D
Deleted member 9676
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If that's so, the solution is simple, never stop pedaling. It will improve your Strava times, your stamina, it's possible there are more health benefits also!
Bogdan_CH
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That's the main logic but many around mentioned at the Bosch Gen 5 launch the culprit of the previous gen was related to all metalic gears. Seems it somewhere în the freewheel
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1st post in this thread I think is the clearest one, the EMBN video.
Well that makes a lot of sense. To me that sounds mostly like cable rattle? I have a 2026 Amflow and have only noticed what I assumed to be some minor cable rattle. But now I'm actually unsure what im hearing
Given how most reviews mention it's a quiet bike, I think you won't be bothered unless you are picky (which is fine).
losgatosgtr
Well-known member
Rob specifically calls out the motor rattle in this video about 13:25 minutes into his excellent video. The rattle sound is very apparent.
Pentti
New Member
Aaah - Thanks for this, I've heard that noise too on rough/rocky descents, I'm glad to know what it is, I hadn't even considered the motor, but sure enough it's that exact noise. So now I know what all the chat is about. I had just backed off the rebound on my rear shock and I thought it could be that!
losgatosgtr
Well-known member
Pretty similar clacking sound to the older Shimano motor on the ebike version of the Santa Cruz Bullit and Heckler from a few years ago and also similar in vibration to one of the older Bosch motors. Not sure of the exact year or model numbers of the motors that were affected.
PaulH2B
Member
My biking buddy’s AmFlow Pro makes very similar rattling noises to those in Rob’s Crestline video. At first, the gearbox clatter wasn’t very noticeable, but after about 1,500 km of riding it became much more pronounced.
As with other motors, some riders don’t mind it, while others find it quite disturbing.
One thing is certain though: the DJI Avinox motor has a strong tendency to rattle—or at the very least, it’s far from silent when descending
As with other motors, some riders don’t mind it, while others find it quite disturbing.
One thing is certain though: the DJI Avinox motor has a strong tendency to rattle—or at the very least, it’s far from silent when descending
losgatosgtr
Well-known member
Glad it’s been discovered and broadcast as I absolutely would not want to end up with a $10k rattle trap e-bike. Hopefully Avinox/DJI will fix this otherwise I’m steering clear.
Rattle-trapped. That’s exactly how I feel about this.
Coming from Bosch- and Shimano-powered bikes, I was absolutely tortured by the rattling.
I got my Amflow after doing research. I read about the rattle issue, but saw it had been fixed in September ‘24. I bought mine in October ‘24. At the beginning, the bike was completely silent, and I was so, so relieved.
I spent quite a bit of money upgrading it and slackening the geometry. Everything was perfect — I had an absolute blast. Honestly, it felt like the bike was 10 years ahead of the competition.
Well… until it started rattling again, just like my last EP08. Horrendous. Around 1400km, 38k hm used by now.
I have ADHD and can’t block out sounds. I get it all at once. I’m really disappointed and have no clue what to do now.
By the way: if I pull the chain backwards, there’s a lot of resistance — so that’s not the culprit. The axle has a little bit of play. Just fix the chainring and move the pedal, and you’ll 100% be able to reproduce this sound (unless your bike is brand new).
So… what now? Does Amflow support read here, and can they comment on how to deal with this?
Coming from Bosch- and Shimano-powered bikes, I was absolutely tortured by the rattling.
I got my Amflow after doing research. I read about the rattle issue, but saw it had been fixed in September ‘24. I bought mine in October ‘24. At the beginning, the bike was completely silent, and I was so, so relieved.
I spent quite a bit of money upgrading it and slackening the geometry. Everything was perfect — I had an absolute blast. Honestly, it felt like the bike was 10 years ahead of the competition.
Well… until it started rattling again, just like my last EP08. Horrendous. Around 1400km, 38k hm used by now.
I have ADHD and can’t block out sounds. I get it all at once. I’m really disappointed and have no clue what to do now.
By the way: if I pull the chain backwards, there’s a lot of resistance — so that’s not the culprit. The axle has a little bit of play. Just fix the chainring and move the pedal, and you’ll 100% be able to reproduce this sound (unless your bike is brand new).
So… what now? Does Amflow support read here, and can they comment on how to deal with this?
losgatosgtr
Well-known member
Bike looks fantastic by the way. Can you give a brief description of the ride characteristics and compare it to other enduro style ebikes you have ridden?
Hopefully you have done due diligence and contacted Avinox about the rattle and given them a chance to resolve the issue? If so what was their response?
Absolutely should be a warranty issue as it is not performing as new and must be repaired or replaced by Avinox. If it is a wear item causing the rattling, then Avinox must advise, produce a repair instruction document, and provide spare parts.
Hopefully you have done due diligence and contacted Avinox about the rattle and given them a chance to resolve the issue? If so what was their response?
Absolutely should be a warranty issue as it is not performing as new and must be repaired or replaced by Avinox. If it is a wear item causing the rattling, then Avinox must advise, produce a repair instruction document, and provide spare parts.
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losgatosgtr
Well-known member
It seems they are aware of the rattle based on your post above. I sincerely hope they eliminate it entirely otherwise there is no way I would buy the current version of the Avinox motor, knowing it will rattle horribly, and not be covered or repaired under warranty.
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Sorry to hear this, can sympathise for sure. Out of interest have you tried turning the hub pre-engagement setting off? I assume you've had a software update during your ownership and this might be enabled. There's another setting that does something similar but I can't recall the name.
losgatosgtr
Well-known member
I think I need some popcorn and a good scotch or something…
Are you saying there’s a software setting that can turn the Avinox motor rattle on and off selectively? That’s pretty cool. Can you confirm what the settings are?
Yeah, I disabled that setting, but thanks for pointing it out! It does only help to a small degree.
OT: Out of the box, the bike wasn’t really “enduro.” To change that, I slapped my Fox 38 (170mm) from my previous Canyon Spectral on it, along with a Suntour Voro Coil with a progressive spring (MBR 600–750 lbs, I’m ~88 kg with gear + motor + battery).
I also threw on a cheap Newmen 27.5 rear wheel with a silent Hydra hub, but left the flip chip in the “29” setting to slack it out even more. Paired with a higher-rise carbon OneUp bar, I now sit in the bike and can throw anything at it.
I also own a Canyon Sender, so I know what a confidence-inspiring bike feels like. A small part of the story here might also be the Albert radials, a minisuspension on its own. Hope that helps.
OT: Out of the box, the bike wasn’t really “enduro.” To change that, I slapped my Fox 38 (170mm) from my previous Canyon Spectral on it, along with a Suntour Voro Coil with a progressive spring (MBR 600–750 lbs, I’m ~88 kg with gear + motor + battery).
I also threw on a cheap Newmen 27.5 rear wheel with a silent Hydra hub, but left the flip chip in the “29” setting to slack it out even more. Paired with a higher-rise carbon OneUp bar, I now sit in the bike and can throw anything at it.
I also own a Canyon Sender, so I know what a confidence-inspiring bike feels like. A small part of the story here might also be the Albert radials, a minisuspension on its own. Hope that helps.
That 100% would fix the issue but introduce others i think, like resistance? And how does one "block his freehub"?
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Got a mate who's a welder?And how does one "block his freehub"?
John_likes_bikes
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alwayslate
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I have a terrible rattle on my 3 week old PL, messaged Amflow with a video of it and also a link to the MBR article about the supposed 'fixed' new motors and they said their engineers reviewed the video and it's completely within spec and there's nothing they will do. Just the nature of the motor when freewheeling.
I did however pop the motor and battery out and the screen power cable is very thin and rattles a lot so sorted that and it helped a little
I did however pop the motor and battery out and the screen power cable is very thin and rattles a lot so sorted that and it helped a little
So the "fixed" new motors is really just marketing BS! What a shame.
Imo the differences between motors rattling or not from new depends on the amount and type of grease used on the gears from factory. Grease if it's thick and heat tolerant will keep the gears sticking to an amount when not pedaling, thus reducing gears backlash causing rattling.
Now, if you have seen a used motor opened for service you know that with time and use and heat that grease will spread out all over the housing, just not the gears. When that happens you get the rattling. Now, not every motor probably isn't greased to the same amount from factory, so there will be ones that rattle as new and some will develop it later.
Someone said Bosch used plastic gears to acheive a rattle free motor. That is not correct, the one plastic gear maybe slightly aids to noise reduction, but is mainly for weight savings as it's not the gear that is under most stress. Bosch have decoupled the external drivetrain (chain, chainring, cassette) from the internal drivetrain (freewheel, gearbox, motor) this is the main reason the Bosch is near silent, probably the only motor curently out there.
Bosch CX4 vs CX5
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Now, if you have seen a used motor opened for service you know that with time and use and heat that grease will spread out all over the housing, just not the gears. When that happens you get the rattling. Now, not every motor probably isn't greased to the same amount from factory, so there will be ones that rattle as new and some will develop it later.
Someone said Bosch used plastic gears to acheive a rattle free motor. That is not correct, the one plastic gear maybe slightly aids to noise reduction, but is mainly for weight savings as it's not the gear that is under most stress. Bosch have decoupled the external drivetrain (chain, chainring, cassette) from the internal drivetrain (freewheel, gearbox, motor) this is the main reason the Bosch is near silent, probably the only motor curently out there.
Bosch CX4 vs CX5
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That's a theory, though it doesn't explain why some with more than 1000 miles still have silent rides. Still seems like a tolerance issue to me.
Having said this, it'd be great if someone took there's apart to check, put grease back on the gears if it's moved to the housing and compare. Not sure anyone is going to, I assume, void their warranty to check. With time I'm sure someone will be at the moment we're just guessing.
Seems to be mums the word on this, can't tell me Rob and various others close to the industry don't know what's really happening.
Having said this, it'd be great if someone took there's apart to check, put grease back on the gears if it's moved to the housing and compare. Not sure anyone is going to, I assume, void their warranty to check. With time I'm sure someone will be at the moment we're just guessing.
Seems to be mums the word on this, can't tell me Rob and various others close to the industry don't know what's really happening.
