BB spacers

benny52

hi
I have just replaced my 3x9 set-up on my 2011 kona caldera with a 1x9 conversion. i have followed the instructions from the workshop section. i have used a superstar plasma chain guide which works fine. Now if i remove the spacer on the drive side and replace it with the bb adapter for the chain guide the chain ring does not line up with the centre of my 9 speed mesh or the chain guide. but if i leave the spacer there and add the bb adapter from the chain guide it lines up perfectly. is it ok to add extra spacers to the bb or will it damage the bb?
sorry if it was a long winded question just thought i would explain what ive done.
thank you
Ben

bails87

For a 73mm BB shell with a shimano BB and chainset you should have one spacer (or chain device) on the driveside.
For a 68mm you add another spacer on each side.

What parts are you using, and what is the BB shell width.

benny52

hi there.
the bb size is 73mm and came as new with just one spacer on drive side.

fsa megaexo bb.
fsa comet triple crank set.
superstar components plasma chain device.
brand x chain ring bolts(short)
and for now i am using the 32t middle ring on the centre mountings on my crank.

will this cause any damage in any way having affectively 2 spacers on the drive side? are the spacers for alignment only or do they serve another purpose ?

thank you for the reply
ben

supersonic

You don't need any spacers with 73mm shell and a BB mount chain guide.

benny52

This is what i originally thought. So i am assuming that the the problem is the chain guide? Because when fitted with no spacer the chain guide still needs to come closer to the frame. At the moment the spacer is inbertween the guide and crank. :? :? :?

cooldad

The spacer or guide should be between the BB shell and BB cup, not outside of the cup, which is what it sounds like you've done?

benny52

Sorry that came out wrong. They are between the BB shell and BB cup. I used the spacer to put distance between the chain guide (which is as close to the frame as possible) and the crank. Just cant make it work with just the chain guide spacer/mount. :?

supersonic

We need some pics.

benny52

ok i will have a go

benny52

sorry it took so long!

The first three are with 1x spacer and 1x BB adaptore bracket for the chain guide.

https://lh6.googleusercontent.com/-yWkC ... pacer2.JPG

https://lh4.googleusercontent.com/-olOw ... pacer3.JPG

https://lh3.googleusercontent.com/-TMVA ... 525201.JPG

And these ones have just the BB adaptor fitted.

https://lh6.googleusercontent.com/-Q2Zk ... pacer2.JPG

https://lh6.googleusercontent.com/-gaJO ... pacer1.JPG

https://lh3.googleusercontent.com/-lYaT ... pacer4.JPG

https://lh4.googleusercontent.com/-7sEw ... pacer3.JPG


If you can see somthing i have done wrong then please tell me. Thanks for the help, ben

supersonic

Non of your links work I am afraid.

benny52

ok i will try again. thanks

benny52

Try them now and let me know. thanks

cooldad

benny52 wrote:

sorry it took so long!

The first three are with 1x spacer and 1x BB adaptore bracket for the chain guide.







And these ones have just the BB adaptor fitted.










If you can see somthing i have done wrong then please tell me. Thanks for the help, ben

Magic

benny52

THANK YOU

How did you do that?

cooldad

Magic

cooldad

See the little Img button. Hit it, post your jpg link and hit it again.

For your next lesson

The Official Bikeradar Guide

cooldad

Sorry couldn't resist.

benny52

I love horses

supersonic

Is it causing any rub?

benny52

Yes there is lots of rubbing. Its alot tighter than it looks!

supersonic

Can you mount the chainring on the outside of the spider?

benny52

I did try that but it pushes the ring out to far the other way. I would need loads of washers to space the guides out. but this might be the only way! I take it that running the spacer and the guide would damage something in the long run?

supersonic

It is not recommended. The crank is designed to fit on the BB axle a prescribed distance.

benny52

Ok that idea is out the window

benny52

Do you think i might have more luck with this product? More adjustment maybe?

http://www.chainreactioncycles.com/Models.aspx?ModelID=50862

or maybe this

http://www.wiggle.co.uk/ethirteen-freechucker-chain-retention-system-bashguard/

thanks

supersonic

Impossible to say.

the_moodster

Have you got a spacer on the non-drive side? Looks like you do in one of those pictures. Shouldn't be any on the nds for a 73mm shell.

cooldad

Looks like there is.

benny52

No there is not a spacer on the non drive side, although it does look like there is. It might be some grease pushing out from when i fitted it. I fitted the E thirteen free chuker and its the same. Too close to the ring! I give up now!
Thanks to everyone for the replys

nicklouse

it looks like it is rotated too far forward.