[Closed] Orange P7 Singlespeed, Bobbins Dropouts

I rode a P7 One for several months with no problems. I tend to find that after the first few rides with a new chain I have to re-tension it, then it should be OK. My only suggestion would be to fully dismantle the dropouts, clean them then re-grease them.

I think it was just the 2008(?) model where they had incorporated the disc mount into the dropout that has problems.
I think they added an extra hole to the drop out and used the pannier bolt hole on the frame to stop the problem.

[url= http://www.singletrackworld.com/forum/topic/p7-sliding-drop-out-rear-brake-mounts-any-ownerswisdom ]http://www.singletrackworld.com/forum/topic/p7-sliding-drop-out-rear-brake-mounts-any-ownerswisdom[/url]

wtf are you asking such a question on here for...........ffs 🙄

if you speak to orange they can still build them up. i had a customer interested in one and orange were great about it. i think it cost a little more because it was a custom but i cant quite remember. the one with the hammershmit was pretty cool did you see that? x you could alway put a chain tensioner on the mech hanger if your really stuck.

I can't see why the dropouts would move on the 2010 model - it's got 3 bolts and the disc mount is separate - so there's no braking force going thru them, my 2006/2007 p7 with 2 bolts is fine.

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Kona's with slidy dropouts used to come with serrated washers to grip into the frame. Try a set of those to see if it stops the slippage.
http://www.google.co.uk/products?rlz=1C1CHNU_enGB334GB334&sourceid=chrome&q=serrated%20washers&um=1&hl=en&ie=UTF-8&sa=N&tab=if
[img] [/img]

the disc mount is separate - so there's no braking force going thru

except there is - the reaction force generated by braking.

except there is - the reaction force generated by braking.

Fair comment - presumably in this case it would try to rotate the wheel backwards, which could loosen the non(?)drive side bolts? maybe some loctite might solve it?

No, not loosen, just slide... and really, actually, the way the force acts on those bolts it should resist backward rotation well. They're still being pulled forward by chain tension on the driveside though.

Rohloff dropouts are angled relative to the chain tension to give a better "angle of friction" resistance to sliding forwards, and also, I think, a bit of "gravity" on their side too.

Most other people keep dropouts parallel to the ground, to keep geometry stable through the movement.

yeah its sliding under load on the drive side

perhaps I should change from 46x12......

lol only joking running 34x16

Half the problem is crap bolts with a 4mm head that just round off when you are tightening them up.

sorry ton this thread is related to bikes, but you have to have one every now and again.

some normal socket cap bolts rather than button heads would probably help.