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I have made 3 attempts to get SRM to understand what I meant but they simply don't understand what I mean - are the cranks I'm trying to fit incompatible with this crank or is it something else that I'm missing?
Can anyone tell me what this part is called or fin a picture of it?
The crank on the right is a square taper crank removed from the spider at the top. The crank on the left is a Octalink crank and does not have the protrusion of the square taper crank. The spider on the bottom had a Octalink crank previously and has a collar (red arrow) that is an interference fit with the spider. I need that piece to run the crank on the left in the spider at the top.
Anyone know what this piece is called please?
The square taper crank / spider is a track crank, wired. The Octalink spider is an old Amateur wired model, and the Octalink crank is from another Pro model.
I also have another Adjustable Octalink crank that is the same as the one from the Pro. So either there is a piece that enables the Octalink crank to be fitted into a spider that had previously been fitted with a square taper crank, or this Track Spider I have needs a special type of Octalink crank?
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Check if the track bolt pattern PM is compatible, Pro arms are 3 bolt however some track PM's are 4 bolt and some are 5 bolt, the 5 bolt ones can be used with 3 bolt arms, although not recommended for powerful sprinters etc.
GZA: did you ever get anywhere with this? i have exactly the same problem as you are - i removed a set of campy cranks and tried to replace them with a set of octalink cranks but unfortunately i needed an extra spacer to do it properly. it did all bolt together without it and i did manage to use it like this but my offset was wandering around a fair bit and the torq bolts backed themselves off within ~25km. i think all the spacer does is give the spider a bit more meat to bite on so it may run ok without it but i certainly won't be risking it again.
the campy cranks i removed had the "spacer" as part of the crankarm so maybe the solution is just to pick up a set of campy cranks and change bottom brackets as well but i'm not 100% sure that all campy crank arms will be the same. i haven't been able to find the spacer only for sale online (SRM don't have it on their webstore).
the part we're both after is shown on pg 28 of the following manual: http://kinetic.com.au/images/stories/ki ... H3oceQdRV3
mentok wrote:oh yeah, and further to that, i have a set of 4 bolt 165 octalink crank arms (nfi what they're for - track maybe) and they have the "spacer" as an integral part of the drive side crank arm. weird.
The four bolt (bolted from the front of the crank) SRM crank arms are for an older SRM Track model. this Octalink crank arm is one piece including spacer...
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