Just stripping down one of my spare engines, and ive just taken the bearings out which look in great nick, anyways was hoping to find a std or .25 mark on the underside so i could determine what size they were. All that is there is two part numbers, followed underneath by this marking:
- Fm 1 11
the 11 is located on its side.
Anyone got any ideas
You could just measure the crank, have you got a mic?
Ive got a vernier but i dont think that will be accurate enough. Any suggestions to a cheap micrometer?
vernier will be accurate enough for 0.25 mm
Lee what do you use?Originally Posted by clee
I need 3 decimal places.
A dial or digital vernier will be needed but accurate enough to spot a regrind .
Well the vernier was a bit hit and miss but
ended up with :
all big ends 48.02mm ! tolerance is between 48.00 and 48.02
main
Mains were more difficult to measure with multiple different outcomes when using the verniers
all between 54.76mm- 54.83mm tolerance is between 54.785mm - 54.805mm
So overall im pretty happy with the digital verniers, and as Lee said i can easily tell that its a standard crank in very good nick.
Last edited by TrixNFlix; 20-11-2010 at 21:57.
Posting Permissions
Reply With Quote