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PostPosted: Fri Sep 22, 2017 7:59 pm 
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Joined: Mon Aug 14, 2017 9:40 am
Posts: 48
After the brake rub with my rear Enve wheel i have another problem with my new BMC Slr01 2018.
At certain times i have a vibrating feeling in my crank and pedals. I feel it really good in my feet.
First thing i checked where my pedals because i already rode 15000 with them but they seem to look good
What could this be?

- bb => bb86 ceramic speed coated (new)
- crank = SRM shimano 9000 power meter with ‘new’ 9000 chainrings 39/53
- groupset => ‘new’ dura ace 9150
- ‘new’ enve wheels with enve hub
- Shop deinstalled the normal hanger and installed the direct mount hanger for my rear derailleur


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Posted: Fri Sep 22, 2017 7:59 pm 


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PostPosted: Fri Sep 22, 2017 8:51 pm 
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Joined: Fri Feb 18, 2005 6:50 pm
Posts: 225
Location: Wilmington, DE
Very likely just new chain meshing with brand new chainrings and cassette cogs. It should smooth out after a few rides if it follows my experience with new drivetrains.


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PostPosted: Fri Sep 22, 2017 11:20 pm 
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Joined: Fri Dec 04, 2015 11:18 pm
Posts: 108
Location: the OC, CA
Did you end up getting the brake rub fixed on your Enve? Alot of annoying issues for such a new bike :(


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PostPosted: Tue Sep 26, 2017 5:00 pm 
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Joined: Mon Aug 14, 2017 9:40 am
Posts: 48
joejack951 wrote:
Very likely just new chain meshing with brand new chainrings and cassette cogs. It should smooth out after a few rides if it follows my experience with new drivetrains.

And what are anfew rides?
Did already 700km with the bike but the feeling is still there.


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PostPosted: Tue Sep 26, 2017 5:31 pm 
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Joined: Sun Aug 14, 2016 10:24 am
Posts: 78
ODC wrote:
joejack951 wrote:
Very likely just new chain meshing with brand new chainrings and cassette cogs. It should smooth out after a few rides if it follows my experience with new drivetrains.

And what are anfew rides?
Did already 700km with the bike but the feeling is still there.

A few rides would be 200km, try lubing the chain and jockey wheels, check if rear derailleur is aligned and if that does fix it try spinning the cranks without a chain on it and check if the pedals are smooth


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PostPosted: Tue Sep 26, 2017 8:04 pm 
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Joined: Thu Aug 24, 2017 4:21 am
Posts: 2
1. check the rear derailleur hanger alignment.
2. make sure the chain is threaded properly through the cogs.
3. check for grime/dirt in the chain, derailleur, cogs.


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PostPosted: Wed Sep 27, 2017 1:27 am 
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Joined: Mon Aug 29, 2016 11:19 am
Posts: 406
Certain times needs to be defined.

Is it in a particular gear?

Are there times when you don't feel the vibration?

What about putting a lot of load on the pedals compared to almost no load? (pushing hard/easy)

Does the vibration make a noise?

Are you possibly crosschained? Big ring - big cogw or small ring small cogs?

Check your wheels/cassette/pedals/crank for side to side play.

Are you familiar how to set the cable tension on a rear derailleur? (indexing)

Clues... give as many as possible. Is the vibration lower sometimes and higher other times? When? What are you then doing on the bike?

/a


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PostPosted: Sun Oct 01, 2017 6:03 pm 
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Joined: Mon Aug 14, 2017 9:40 am
Posts: 48
alcatraz wrote:
Certain times needs to be defined.

Is it in a particular gear?

Are there times when you don't feel the vibration?

What about putting a lot of load on the pedals compared to almost no load? (pushing hard/easy)

Does the vibration make a noise?

Are you possibly crosschained? Big ring - big cogw or small ring small cogs?

Check your wheels/cassette/pedals/crank for side to side play.

Are you familiar how to set the cable tension on a rear derailleur? (indexing)

Clues... give as many as possible. Is the vibration lower sometimes and higher other times? When? What are you then doing on the bike?

/a

I have it on the 39 and on the 53 and on every gear.
It is more noticeable when putting more power onto the pedals. When push!ng very very easy i can’t really feel it. Also i feel it more on roads with new asphalt
No cable tension because it’s the electronic version
No play on the crank and pedals. Would be strange because they are new.
I have a little bit of play at my back wheel but not more then my other wheels.


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PostPosted: Sun Oct 01, 2017 6:25 pm 
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Joined: Mon Aug 29, 2016 11:19 am
Posts: 406
All I can think of is chain/cassette issues + rear wheel hub.

Borrow another rear wheel quick and see if it's still there. Preferably with a different cassette. Cassette/freehub/spokes might reveal some issue. Just find one gear that indexes correctly and do some testing in only that gear. Means even 10/9 speed wheels could perhaps be tested.

For example, I had a vibrating chain that was wearing out unevenly so checking chain stretch seemed all fine. But it still jumped and popped a bit every revolution. Possible the installer put an old chain on by mistake?

/a


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PostPosted: Sun Oct 01, 2017 7:35 pm 
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Joined: Wed Oct 28, 2009 7:13 pm
Posts: 103
Check the chain-ring bolts and that the rings are seated correctly on the spider. I have seen loose bolts allow the chain ring to wobble and at a high cadence this could feel like a vibration. Check it in a work stand while turning the cranks by hand, if this is the issue you will hear and feel it in the stand.


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PostPosted: Sun Oct 01, 2017 10:46 pm 
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Joined: Mon Aug 14, 2017 9:40 am
Posts: 48
My elite drivo is going to be delivered next week. That will be a good test to see and feel if the vibrations are still there when my rear wheel is removed.
If not then it’s gonna be a wheel/casette problem.
I think the problem is more at the crank because + i feel the vibration a lot more at the drive side then the non drive side.


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PostPosted: Sun Oct 01, 2017 10:57 pm 
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Joined: Thu Aug 04, 2016 2:44 pm
Posts: 75
This is interesting, because it sounds like I have the exact same issue on my commuter/gravel bike. In my case it certainly wasn't the crankset/chainring, because I've changed that and it didn't do anything. It feels like something to do with the bearings, but they're fairly new and BSA (easy install) so I doubt it.

Curious if you can figure it out!


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PostPosted: Sun Oct 01, 2017 11:17 pm 
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Joined: Mon Aug 14, 2017 9:40 am
Posts: 48
Maybe something worth mentioning is that i have never felt it when pushing power while standing on my pedals (out of the saddle).


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PostPosted: Sun Oct 01, 2017 11:27 pm 
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Joined: Thu Aug 21, 2014 7:12 am
Posts: 169
Location: Sydney
Check the cassette lock ring is tight.


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Posted: Sun Oct 01, 2017 11:27 pm 


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