78 replies to this topic

[Spider]

Being an older thread, some of the links don't work I'm sorry.

 

Nothing for it but to add some new ones then !

 

 

[Spider]

And this short one

 

 

[Spider]

 

[Ethel]

thats good info,

 

another cast crank is the fiat 500/126, i belive there are a number of cast fiat cranks,

 

I must say I dont like the idea of long stroke billet mini cranks, ussentially youve taken the std crank, stroked it right out, and reduced the big end diameter by 1/8". I cant remember off hand exactly but I belive at std stroke there is still some big end/ main overlap, once you get to 84mm stroke and S bearings i belive this is gone,so I think you loose a lot of strenght with a billet although obviously you can combat this with better materials.

 

somthing I saw a while back whcih supprised me was a renound engine builder saying that fluid dampers didnt work because when he tried one it cost about 3 hp. now I'm no expert, but I was under the uimpression that all crank dampers will cost a bit of power, as if they dont they arent absorbing anything.

 

 

Thread revival...

 

they may be absorbing something, but was it anything that could be put through the transmission? An oscillating chunk of crank has to spend half its time trying to turn in the opposite direction.