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Crank advice
Posted: Wed May 20, 2009 6:55 pm
by coaster
As mentioned in another thread I'm putting a SR190 together using a box of bits that used to be a Super Vijay. The crank looked to be ok ish at first but un closer examination there is a LOT of side play on the big end (there are no big end shims)and what appears to be a pair of gudgeon pin shims in the box of bits.
On top of this the rod is slightly bent
The question is, is it worth having it repaired or would it be cheaper to get a new one?
Cheers
colin
Re: Crank advice
Posted: Wed May 20, 2009 7:03 pm
by drunkmunkey6969
coaster wrote:As mentioned in another thread I'm putting a SR190 together using a box of bits that used to be a Super Vijay. The crank looked to be ok ish at first but un closer examination there is a LOT of side play on the big end (there are no big end shims)and what appears to be a pair of gudgeon pin shims in the box of bits.
On top of this the rod is slightly bent
The question is, is it worth having it repaired or would it be cheaper to get a new one?
Cheers
colin
Pick up a brand new GP crank off eBay for £45
http://cgi.ebay.co.uk/LAMBRETTA-GP-SIL- ... 7C294%3A50
Re: Crank advice
Posted: Wed May 20, 2009 7:17 pm
by coaster
Many thanks

Re: Crank advice
Posted: Wed May 20, 2009 7:30 pm
by sean brady scooters
and if your lucky it may last 500 miles................
buy a new indian gp crank by all means..........but then......straight away send it someone like martin at chisel speed.........to have a better big end bearing fitted............
Re: Crank advice
Posted: Wed May 20, 2009 8:52 pm
by coaster
sean brady scooters wrote:and if your lucky it may last 500 miles................
buy a new indian gp crank by all means..........but then......straight away send it someone like martin at chisel speed.........to have a better big end bearing fitted............
That being the case, wouldn't I be better off just getting the i've got fettled, CS engineering in Norwich isn't too far away.
Re: Crank advice
Posted: Wed May 20, 2009 9:59 pm
by byron
coaster wrote:That being the case, wouldn't I be better off just getting the i've got fettled, CS engineering in Norwich isn't too far away.
yep, CSE fitted an RD400 rod to an AF crank for me, top job of course, tigged the pin as the "race" crank had badly twisted after a few hundred gentle miles

, and you know it's now strong & true.
the [107mm] rod from my crank is probably still up there, you can have it if it can be found.
Re: Crank advice
Posted: Wed May 20, 2009 11:10 pm
by goldeneye
MEC EUR black race crank would be ok for that. about 80 quid. glasgow lambretta did me one , and with a couple of seals and some other small bits to make it up to 100 quid, the postage was free as well. bargain.
Re: Crank advice
Posted: Wed May 20, 2009 11:56 pm
by coaster
byron wrote:coaster wrote:That being the case, wouldn't I be better off just getting the i've got fettled, CS engineering in Norwich isn't too far away.
yep, CSE fitted an RD400 rod to an AF crank for me, top job of course, tigged the pin as the "race" crank had badly twisted after a few hundred gentle miles

, and you know it's now strong & true.
the [107mm] rod from my crank is probably still up there, you can have it if it can be found.
Nice one Jarv, I might do that

Re: Crank advice
Posted: Wed May 20, 2009 11:59 pm
by coaster
goldeneye wrote:MEC EUR black race crank would be ok for that. about 80 quid. glasgow lambretta did me one , and with a couple of seals and some other small bits to make it up to 100 quid, the postage was free as well. bargain.
Thanks Goldeneye, I'll file that away for future reference, my next project will be a 225 possibly a Rapido so a more robust crank will be called for and a MEC would probably fit the bill.
Cheers

Re: Crank advice
Posted: Thu May 21, 2009 8:51 am
by Bilko
Thanks Goldeneye, I'll file that away for future reference, my next project will be a 225 possibly a Rapido so a more robust crank will be called for and a MEC would probably fit the bill.
Cheers

I've one in my muggy 225 since '05 and it's been well thrashed. I'm more than happy.