interesting, WW. i think mine's just about ok but i'll bear that in mind. cheers!
Bike Forum
Why non on-one for women or small person?
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Posted 3 months ago #
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So a 400mm post would let you ride a frame 2in smaller.
Yes but once again I'll be on the limit. And having 400mm of post showing would kinda scare me.
Posted 3 months ago # -
Does anyone really believe that the frame causes chainsuck?
Yes
New chainset, new chain, new cassette and still suffers with chainsuck seems to confirm this.
Posted 3 months ago # -
the frame design doesn't actually cause the chainsuck, it's just that some frames let you know it's happening because of the design of the chainstays giving you an aural response to it.
Posted 3 months ago # -
juan - Member
So a 400mm post would let you ride a frame 2in smaller.
Yes but once again I'll be on the limit. And having 400mm of post showing would kinda scare me.
POSTED 20 MINUTES AGO # REPORT-POST
You aren't meant to have 400mm of post showing. 100mm should be in the frame.
Posted 3 months ago # -
The chain wrapping that leads to chainsuck is nothing to do with the frame - unless something is seriously wrong like a floppy/snapped chainstay or massively out of alignment BB/wheel. But the chain system is obviously able to deal with any minor misalignment otherwise you wouldnt be able to use all those sprockets on a cassette.
The frame does however dictate if and where the chain gets jammed or just locks up.
Chainsucking on new stuff is either bad setup or a fault - eg chain with stiff/bent links or chainrings not put on right (with the markers aligned together).
As for long posts - I run a 16". I could ride an 18" but I like plenty of standover and have a nice 400mm Thomson with a couple of inches to go before the min insert mark.
Posted 3 months ago # -
OK then andyl, how does that explain exactly the same chainset, chain, cassette being installed on another frame by the same person not experiencing chainstuck, in exactly the same conditions?
ie: the only variable which is different is the frame.
Posted 3 months ago # -
On-One size fits all, surely?
Posted 3 months ago # -
richc - they're probably both experiencing chainsuck (ie.e the chain is 'climbing' up the front chainring).
the other frame has a chainstay design which means that when the chain does climb up the chainring it doesn't hit the stay so you don't know it's happening.
Posted 3 months ago # -
So you can get chain stuck, without the chain being stuck ....... Is that a bit like a wheel skidding without actually slipping, or a fork bottoming out, without actually moving?
NB: If the chain was sticking to a ring, I would expect to see the rear mech flapping ..... or can the chain ride up without causing this?
Posted 3 months ago # -
chainsuck is the act of the chain sticking to/climbing up the front chainring.
What you're calling chainsuck is the chain hitting the frame after the chainsuck has already happened.
Posted 3 months ago # -
richc - Member
OK then andyl, how does that explain exactly the same chainset, chain, cassette being installed on another frame by the same person not experiencing chainstuck, in exactly the same conditions?ie: the only variable which is different is the frame.
Badly set up on one frame. Better on the other OR just the frame is knocking the chain off the ring in better place. As I said earlier, the frame dictates where and if the chain actually gets jammed. As wwaswas says - the act of chainsuck is the chain getting stuck on the rings.
Also where all the variables the same? Rear dérailleur at the correct angle. Cable outer leading to it free to move okay? Chain the correct length?
Posted 3 months ago #
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