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whats the size of a lambretta big end bearing?
Posted:
Thu Jan 29, 2015 6:58 pmby Scooterslag
as above, just being curious, sizes for LI/SX and GP if anyone knows - cheers Paul
Re: whats the size of a lambretta big end bearing?
Posted:
Thu Jan 29, 2015 9:02 pmby gaz_powell
From memory
Standard Innocenti LI to GP Italian were 22.9x28x16
Then came aftermarket cranks, SIL GP etc at 22x28x16 - which is now the most common
Re: whats the size of a lambretta big end bearing?
Posted:
Thu Jan 29, 2015 9:43 pmby Scooterslag
That's great, thanks for the information. Paul
Re: whats the size of a lambretta big end bearing?
Posted:
Thu Jan 29, 2015 10:31 pmby monument7
Got one here measures 22.9, 28.9, 13,6
Re: whats the size of a lambretta big end bearing?
Posted:
Thu Jan 29, 2015 11:43 pmby Scooterslag
could you get away using a 22x28x16 bearing on a LI/SX crank?
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 12:26 amby dickie
monument7 wrote:Got one here measures 22.9, 28.9, 13,6
I'm guessing that's to be used with big end shims.
What crank did it come off Dave?
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 12:28 amby dickie
Scooterslag wrote:could you get away using a 22x28x16 bearing on a LI/SX crank?
You wouldn't be able to get it on the crank pin.
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 12:32 amby Scooterslag
dickie wrote:Scooterslag wrote:could you get away using a 22x28x16 bearing on a LI/SX crank?
You wouldn't be able to get it on the crank pin.
ah yeah, very true, that's a shame as I've got a good condition SX crank that came out of a reliable motor of mine years ago and I foolishly didn't store it away properly and some of the rollers have rust spots on them. Just needs a new bearing as there is hardly any wear on the rod (0.20)
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 1:12 amby monument7
dickie wrote:monument7 wrote:Got one here measures 22.9, 28.9, 13,6
I'm guessing that's to be used with big end shims.
What crank did it come off Dave?
It came in a con rod kit I was going to put in my S2 crank which was siezed but being cheap the quality is @@@@, get what ya pay for so just bought a decent GP crank and con rod.
Gonna make me own con rod just to see what it turns out like and pick up another GP crank with big end gone to build up for my Special
made a start
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 9:34 amby HxPaul
monument7 wrote:dickie wrote:monument7 wrote:Got one here measures 22.9, 28.9, 13,6
I'm guessing that's to be used with big end shims.
What crank did it come off Dave?
It came in a con rod kit I was going to put in my S2 crank which was siezed but being cheap the quality is @@@@, get what ya pay for so just bought a decent GP crank and con rod.
Gonna make me own con rod just to see what it turns out like and pick up another GP crank with big end gone to build up for my Special
made a start
That conrod looks a bit thick,make sure it fits between the webs of a GP crank.
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 12:47 pmby monument7
Yes it is thick because this is only half of the profile cut off on the saw. I have made a jig to sit this in to finish the other side down to thickness.
I used the conrod I got in the kit as a sample but not sure if this was a good example so might borrow a better quality one to copy. I know it seems a waste of time and I'm only doing it because I can not because I need to.
Re: whats the size of a lambretta big end bearing?
Posted:
Fri Jan 30, 2015 2:18 pmby dscscotty
Some bearing dimensons are also 22x29x16 some AF,MEC UR types use these dimension bearing as are indian GP200 rod/bearings.
Regards
Scotty