Alpinestars BB?

[David633]

I seem to have a bottom bracket that is too wide on my Alpinestars Cro-mega. The chain angle is much too extreme when shifted to the large cog. What is the proper spindle length to be using for an Astars cro-mega? Thanks!

 

[GT-Steve]

Which year/model is it?? Estay or non-estay?

 

[mikee]

my 90 cromega dx non elevated runs a 122 with the right dx chainset
my 91 cromega dx elevated runs a 122 with a dx chainset
my 91other cromega dx elevated runs a 118 with a topline chainset
not sure whats in my almegas tho

b/b length usually is chainset dependant

 

[David633]

Ah, I should've said it's a '91 e-stay. Single ring up front to 8 cogs in back, the chain is about straight in cog 6 (third smallest). It barely holds on cog 2 but in cog 1 it's definitely not liking it, makes pop/skip noises. I need to pull my cranks and measure it.

 

[David633]

Alright, there was a 122 in there, probably the original one I guess. Anyways, I had a 110 laying around so I popped that in. Will just have to see how that ends up. Chain line is a lot better. Test ride tomorrow, I'll post how it goes.

 

[mikee]

are you running on the big ring at the front ?

pics please, always like to see an alpinestars

 

[David633]

Have posted the beast before, but now it has gears. Certainly not one of the prettier/period correct/high end bikes on here, but I love riding it and it certainly garners some comments.

 

[mikee]

that looks great david
very nice build

big frame ?