Tom@WashDC
Well-Known Member
- Region
- USA
- City
- Loudoun County, VA.
I feel for you. I'm hating this weather. I don't mind bundling up. I use fur lined pogies without gloves. I just hate ice. Do not want to go down on ice.
Re-greasing the Ultra motor...is it time?
- Thread starter Deacon Blues
- Start date
Gionnirocket
Well-Known Member
- Region
- USA
- City
- Y. O.
Curiosity got the best of me so I ventured out for a short 5mi ride.
The MUP is still a sheet of ice and the streets have enough ice melt salt on them to start your own Dead Sea... But at least the temps made it to 40° this afternoon for the first time in too long.
This said and my first impression... I'm not experiencing the Quiet Gear nor Corn Head Grease miracle.
Probably measurably quieter but no where near what I would consider to be quiet motor. If you've ever riden with a BBS02B... Now that's near silent.
I'll give it a few more miles and see if things get quieter with break in like they did when I initially tried the Mobil SHC100
I may then open her up to check migration and possibly top it off as I've seen many on here with cornhead grease pics and much more grease was used.
Hey @JRA ... You speak of only using a tblsp and I'd guess that's about what I used.. How do my pics compare to the amount you used?
The MUP is still a sheet of ice and the streets have enough ice melt salt on them to start your own Dead Sea... But at least the temps made it to 40° this afternoon for the first time in too long.
This said and my first impression... I'm not experiencing the Quiet Gear nor Corn Head Grease miracle.
Probably measurably quieter but no where near what I would consider to be quiet motor. If you've ever riden with a BBS02B... Now that's near silent.
I'll give it a few more miles and see if things get quieter with break in like they did when I initially tried the Mobil SHC100
I may then open her up to check migration and possibly top it off as I've seen many on here with cornhead grease pics and much more grease was used.
Hey @JRA ... You speak of only using a tblsp and I'd guess that's about what I used.. How do my pics compare to the amount you used?
Gionnirocket
Well-Known Member
- Region
- USA
- City
- Y. O.
No one would know better than you Black Hand.Sounds to me like you may be experiencing premature coagulation as a result of greasing your own bafang
What's truely amazing is that you taught the dog to reach all those tricky bearings that you so desperately tried to reach but just couldn't.
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Nvreloader
Western Nevada
- Region
- USA
SO I'll ask again,
What do you use to clean to clean out to old grease and WILL NOT harm anything inside, like all those electrical boards/wires etc?
Tia
What do you use to clean to clean out to old grease and WILL NOT harm anything inside, like all those electrical boards/wires etc?
Tia
Gionnirocket
Well-Known Member
- Region
- USA
- City
- Y. O.
Paper towels, a cloth rag and a small plastic brush.
Alcohol wipes to finish up and for anything electrical that may get grease on it.
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juggernaut1
New Member
- Region
- Australia
Several e-bike shops in Australia recommend the Mobil 28 grease. It has an NLGI of 1.5 per the data sheet, wide temp range with very low starting and running torque (low drag).
Gionnirocket
Well-Known Member
- Region
- USA
- City
- Y. O.
So an update on the Quiet_gear motor using Cornhead.
@ 450mi total and 350mi since the initial Cornhead application the motor still had an annoying whine (IMO)
Decibel wise it is probably quieter than my other standard gear Ultra Motor using the Mobil SCH100... but again, not what I would consider a quiet motor. As it's breaking in it is a little better than new and the first few rides after the initially Cornhead application.
It's raining here so I used the time to give it a quick inspection. The grease seemed OK and none had made it's way to the controller....
.... so I decided to add some more to see if it would make any difference. Not as much as @Tom@WashDC used.. but significantly more than the tablespoon that @J.R. uses.. which was about what I initially applied.
Like the first greasing I removed the 2 smaller gears and packed all the teeth in the underlying gears, then the upper gear teeth. Put the gears back in place and then I packed the space between the gears and the casing.
This tacky snot grease is so annoying to work with.
First impression...
The first 1/4mi the motor was near silent...but then it slowly got louder as the grease liquified and spun off the gears. By the time I reached the top of the 3mi hill at the start of the MUP, averaging about 14mph and drawing >200w the motor whine was back. Somewhat less than before and at a lower tone but definitely audible. The next 4mi it pretty much stayed at that level so I queued up the Soundgarden I have on my mp3 speaker and some Jesus Christ Pose made the motor whine disappear
On the way back pretty much the same and I could hear the motor between songs.. but I can say definitely less noise than before this repacking. I'd say I have about 1/4 of the 10oz cartridge in there.
Total ride was 24 miles
Hypothesis... For the cornhead to make this motor really quiet, you'd need to pretty much fill in all the space in the gear box section so that when it liquifies under mechanical pressure from the teeth, the grease that is not being churned and is in the static solid state will hold the liquifyed grease on the gears.
How it's greased now is better than stock but far from what I would call silent.
My perspective may be tainted by my experience with the very quiet BBS02B
I'll add... the Quiet_gear motor is a fugazi
@ 450mi total and 350mi since the initial Cornhead application the motor still had an annoying whine (IMO)
Decibel wise it is probably quieter than my other standard gear Ultra Motor using the Mobil SCH100... but again, not what I would consider a quiet motor. As it's breaking in it is a little better than new and the first few rides after the initially Cornhead application.
It's raining here so I used the time to give it a quick inspection. The grease seemed OK and none had made it's way to the controller....
.... so I decided to add some more to see if it would make any difference. Not as much as @Tom@WashDC used.. but significantly more than the tablespoon that @J.R. uses.. which was about what I initially applied.
Like the first greasing I removed the 2 smaller gears and packed all the teeth in the underlying gears, then the upper gear teeth. Put the gears back in place and then I packed the space between the gears and the casing.
This tacky snot grease is so annoying to work with.
First impression...
The first 1/4mi the motor was near silent...but then it slowly got louder as the grease liquified and spun off the gears. By the time I reached the top of the 3mi hill at the start of the MUP, averaging about 14mph and drawing >200w the motor whine was back. Somewhat less than before and at a lower tone but definitely audible. The next 4mi it pretty much stayed at that level so I queued up the Soundgarden I have on my mp3 speaker and some Jesus Christ Pose made the motor whine disappear
On the way back pretty much the same and I could hear the motor between songs.. but I can say definitely less noise than before this repacking. I'd say I have about 1/4 of the 10oz cartridge in there.
Total ride was 24 miles
Hypothesis... For the cornhead to make this motor really quiet, you'd need to pretty much fill in all the space in the gear box section so that when it liquifies under mechanical pressure from the teeth, the grease that is not being churned and is in the static solid state will hold the liquifyed grease on the gears.
How it's greased now is better than stock but far from what I would call silent.
My perspective may be tainted by my experience with the very quiet BBS02B
I'll add... the Quiet_gear motor is a fugazi
Last edited:
Gionnirocket
Well-Known Member
- Region
- USA
- City
- Y. O.
So with 750mi on the QG motor and 650mi since switching to Cornhead the motor was still whining annoyingly.
I opened her up and packed the gear box with cornhead as this was the only thing left to do and there was no sign of migration into the controller area. In doing so I didn't see any signs of wear but I did notice that the top of the gears (when looking at it in it's mounted state) looked almost dry of grease. I'm assuming the grease under load liquifies and flings off during operation.
Since doing this I've put another 150mi on it and now I can finally say that the motor is acceptably quiet though still not silent. Very quiet under 250w but put her under load and you can hear it.. though now at a much lower level and at a lower less annoying tone.
I think my initial hypothesis in my last post is proving true. Due to the thixotropic characteristics of the Cornhead the gear box needs to be full so that as it liquifies.. it has no place to go but back on the gears.
Honestly I don't see how a tablespoons worth of this grease can be sufficient as I'm using 8 times that amount now. A little less than 1/2 the tube.
Now my only concern is my original.. migration into the controller area... but since the grease is thicker in it's static state I believe it will contain itself to the gear area as it has so far.
Still not sure if I like it better than the Mobile SCH100 in which a heavy tablespoon is sufficient and showed no gear or grease wear after 4000mi.. but I'm willing to experiment further.
Y_Viscosity_MV
I opened her up and packed the gear box with cornhead as this was the only thing left to do and there was no sign of migration into the controller area. In doing so I didn't see any signs of wear but I did notice that the top of the gears (when looking at it in it's mounted state) looked almost dry of grease. I'm assuming the grease under load liquifies and flings off during operation.
Since doing this I've put another 150mi on it and now I can finally say that the motor is acceptably quiet though still not silent. Very quiet under 250w but put her under load and you can hear it.. though now at a much lower level and at a lower less annoying tone.
I think my initial hypothesis in my last post is proving true. Due to the thixotropic characteristics of the Cornhead the gear box needs to be full so that as it liquifies.. it has no place to go but back on the gears.
Honestly I don't see how a tablespoons worth of this grease can be sufficient as I'm using 8 times that amount now. A little less than 1/2 the tube.
Now my only concern is my original.. migration into the controller area... but since the grease is thicker in it's static state I believe it will contain itself to the gear area as it has so far.
Still not sure if I like it better than the Mobile SCH100 in which a heavy tablespoon is sufficient and showed no gear or grease wear after 4000mi.. but I'm willing to experiment further.
Y_Viscosity_MV
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