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PostPosted: Wed May 03, 2017 7:44 pm 
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Posts: 149
Location: Scotland or London
I recently bought a used Cannondale CAAD 10 frameset (~2014) which came with the Hollowgram SI chainset installed.

On having a look over it I’ve noticed that there is some lateral movement which is worrying.

It’s best shown here in this video I took:

https://youtu.be/EvG_OsbOZ-w

This pic shows the set up on the non drive side:

Image

Here is it after being dismantled:

Image

After disassembling, picture shows from left to right:

Crank arm fixing bolt
Chainset / Drive side arm

2.6mm spacer

bearing shield/cover
bearing shield/cover

Wave washer
7.5mm non drive side spacer

Non drive side crank
Crank arm fixing bolt

Here is the spindle, which measures 109mm:

Image


Bearings feel ok and show no signs of movement


I’ve got hollowgram SISL and SISL2 on other bikes and have never had an issue.

Any ideas about what's going on?


Attachments:
File comment: Non drive side set up
IMG_6649.jpg
IMG_6649.jpg [ 38.21 KiB | Viewed 666 times ]
File comment: 109mm Spindle
IMG_6655.jpg
IMG_6655.jpg [ 6 KiB | Viewed 666 times ]
File comment: Dismantled
IMG_6652.jpg
IMG_6652.jpg [ 7.8 KiB | Viewed 666 times ]
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PostPosted: Wed May 03, 2017 9:04 pm 
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Posts: 129
You seem to be missing a bunch of thin spacers which go next to the wave washer to ensure that it is compressed enough for removing play. I think any Cannondale dealer can hook you up with the parts cheaply.
Edit: also a bb30a crankset in a BB30 frame would end up like that as the spindle is 5mm(?) longer.


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Posted: Wed May 03, 2017 9:04 pm 


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PostPosted: Wed May 03, 2017 10:13 pm 
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Location: Scotland or London
Thanks for your reply, I thought those spacers weren't needed on the si but looks like you're right:

Image

Thanks!


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PostPosted: Wed May 03, 2017 10:57 pm 
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Posts: 129
Now that I look at it more, it seems more like you have a BB30A crank in a BB30 frame than missing spacers. The effect would be 5mm excess spindle which would not allow for adequate compression of the wave washer. I suppose you can solve this using spacers, but the proper spindle and NDS arm will be the best solution (least of a bodge).


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PostPosted: Wed May 03, 2017 11:21 pm 
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Joined: Fri Aug 31, 2012 6:32 pm
Posts: 406
It is the same spindle and crank regardless if it's for BB30 or BB30A. The only thing that's different is the NDS spacer (7.5mm vs. 2.5mm). He has the correct spacer.


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PostPosted: Thu May 04, 2017 12:28 am 
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I worked on an almost new Cannondale Evo about the same vintage I think and looked pretty much the same when brought to me. Basically the shop it was purchased at hadn't torqued down the crank nearly enough so it wasn't even compressing the wavy washer. Looked like yours. Try torquing it to spec with a proper torque wrench before doing anything else. In my case that's all that was needed, at least for that issue. I also reinstalled the PF30 BB which was a creaking mess. Cleaned it up and used loctite 609 plus primer and not a problem since.

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C59 Five Years Later
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PostPosted: Thu May 04, 2017 12:38 am 
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Location: Scotland or London
Calnago wrote:
I worked on an almost new Cannondale Evo about the same vintage I think and looked pretty much the same when brought to me. Basically the shop it was purchased at hadn't torqued down the crank nearly enough so it wasn't even compressing the wavy washer. Looked like yours. Try torquing it to spec with a proper torque wrench before doing anything else. In my case that's all that was needed, at least for that issue. I also reinstalled the PF30 BB which was a creaking mess. Cleaned it up and used loctite 609 plus primer and not a problem since.


Thanks, my first thought was maybe it hadn't been tightened properly so I took it apart, cleaned it and put it back together. I don't have a 40 Nm torque wrench but it was on pretty tight, I would have had trouble tightening it any further.

I've ordered some spacers so hopefully that'll help. I'm a bit surprised thought that you need 0-3, 0.5mm spacers. Are the tolerances that variable?

This diagram shows the spacers too:

Image


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PostPosted: Thu May 04, 2017 1:16 am 
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40Nm is quite a lot. Not sure if "pretty tight" = 40Nm. Looks like you'd need more than 1.5mm of spacers to take up that slack.

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Colnago C60 - PR99
C59 Five Years Later
My Special Colnago EPQ
Trek Emonda SL Campagnolo SR


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PostPosted: Thu May 04, 2017 3:50 am 
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Location: RVA,USA
Are you SURE the 2014 isn't the 104mm spindle???

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PostPosted: Thu May 04, 2017 11:48 am 
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Location: Pa USA
It changed in 2012. See the tech sheet above. See the photo which shows that there is approx 5mm of bare spindle. He's missing a stack of spacers. Usually you start with 4 or so, he has none.

Or, one other thing to check, the spindle has a drive side and an non-drive side. One side, I believe the drive, has a longer "offset" from the bearings. There is a marking on the face of the spindle which indicates which is which. It might be in backwards.


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Posted: Thu May 04, 2017 11:48 am 


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PostPosted: Thu May 04, 2017 1:57 pm 
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I ran the exact same setup. I think you need a couple of the thin spacers as well as to torque both sides to spec.

My torque wrench that goes up to 40nm is about 18-inches long. Even with the leverage that length provides, it's pretty tough to torque to spec.


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