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RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  fitting twin pinch flights
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Author Topic: fitting twin pinch flights  (Read 600 times)

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crusty

  • Guest
fitting twin pinch flights
« on: April 21, 2008, 09:38 PM »
have put bearings in slotted axle in place put arms on with washers in place and tightened up but arms won't spin freely
what have i done wrong must admit i didn't put the collar/shim/sheef over the axle between the bearings but i don't see how this would affect the spinning
but i'm no expert
which is why i'm asking you guys

Offline MartyC

  • Berm Worm
  • ***********
  • Posts: 8755
  • Radder than a Rad thing on a Rad day; maybe?
  • Rated:
Re: fitting twin pinch flights
« Reply #1 on: April 21, 2008, 09:56 PM »
If the arms are pulling in on the bearings then yes not having the shim on the axle will cause them to stop spinning as you have effectively squeezed the bearings together  :-\.  Back them off a touch and retighten the pinch bolts and see if that makes a difference  :daumenhoch:.


Better to crash and burn than fade away

crusty

  • Guest
Re: fitting twin pinch flights
« Reply #2 on: April 21, 2008, 11:14 PM »
cheers bud sounds like i need to put the shim in i'm a cock
the bearings where a C nut to put in as well
serves me right for trying to do something while talking,eating and drinking

eloopnai

  • Guest
Re: fitting twin pinch flights
« Reply #3 on: April 21, 2008, 11:19 PM »
are these new flights?
 i have just fitted a new set and forgot the shim but all seems ok took her for a spin and all ok fook taking em apart and fitting it now !

crusty

  • Guest
Re: fitting twin pinch flights
« Reply #4 on: April 22, 2008, 07:46 AM »
i'll try loosening them first
thanks

bridgecity

  • Guest
Re: fitting twin pinch flights
« Reply #5 on: April 22, 2008, 07:12 PM »
Here are steps for installing the cranks:

http://www.bmxmuseum.com/forums/viewtopic.php?id=30010

RADBMX.CO.UK  |  Technical & Reference Section  |  Tech and Restoration  |  fitting twin pinch flights
 

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