Connecting Rods and Cranks

GregBda · Post by **GregBda** » Thu Feb 28, 2008 4:33 pm

I've noticed several different connecting rods marked Seagull I, Seagull 2 etc. What are the differences between them and are they all interchangeable?

Also is the roller crankshaft destined to fail? Or should it be fine as long as a 25:1 mixture is used? Are there any advantages to using the roller crankshaft?

Thanks,

Greg

Post by **charlesp** » Thu Feb 28, 2008 6:47 pm

The other Charles will be right in his element when he can begin to answer some of these.

I defer to him with a sigh of relief - he is your man when it comes to roller bearing cranks and all that.

Sadly he is not managing to log in; I understand our webmaster is looking into it.

That means we can say what we like about him - and he can't reply!

CatiGull · Post by **CatiGull** » Thu Feb 28, 2008 8:55 pm

Maybe we should all post horribly incorrect Seagull information to give him a valued sense of worth on his return....

philj · Post by **philj** » Thu Feb 28, 2008 11:31 pm

Hi,
needle roller bearings and engines sould never meet. For them to work they must touch, touching causes wear and they fail. I like shells and bushes! They wear till they are worn and wear no more, as they no longer touch, the oil makes up the gap.
regards
Phil