Quote:
Originally Posted by NJSPEEDER
i have wanted to rollerize the crank in an SBC even since i read about the process toyota used all the way back in the 70's to rollerize some of their racing stuff. they also had lite weight cranks to go along with it of course and oiling was modified since rollers don't need as much sauce to keep cool and happy.
they used caged, needle style rollers. i think the theaory of it's effectiveness could be tested by machining down a crank to accept the rollers and do low rpm testing. big bearings and a full bearing surface crank woudl obviously be wanted to really buzz the thing though.  |
THE SV650 suz we campaigned in 2000 that we won 2 AMAs with, had some very tough rules about mods -- but they didn't say anything about bearings on the crank -- so i had to waste a new crank in order to get the surface rock well tested for hardness -- we needed an R65 to be able to run the crank on timkin closed bearings like you mentioned -- so i was in a pickle i could not let anyone in the USA help with what i wanted -- eyes and ears will steel anything you do ya know =-= so i used a guy in england -- and a bearing company in Germany -- so as we could take out the flat crank bearings on the crank and Lazar cut holes in the timkin shields in order to oil also grooving a thouft had to be done and i jetted the crank -- the bike that year 2000 with a totally stock motor cept for carbs and cams and thats all we could do was 17 MPH faster that any other bike in the US including the factory's bike --At mid Ohio the bike when we let it all hang out in the nationals knowing they were coming after us, anyway. in a complete tear down every screw we finished 42 seconds in front of second place bike it was also on the straight getting up to 169 MPH on a 2.7 mile road coarse with 12 turns hahahahahah last year i raced bikes --- we had to prove my 2 car garage could put the factorys with the girls and umbrellas in the trailer hahahhahaha -- we won back to back 2 AMA #1 plates in 2 diff classes with only one bike in the same year -- ya think -- it would do all of what you think ( BUT ) now think about this -- ever spin a bearing on your finger and it will walk it around if you get the speed high enough -- well we had that problem in the corners the bike was gyro leaning at 12,000 RPMs -- making the rider -- back it in ( like flat tracking but a lot faster and on pavement ) it super heated the tires to the point he almost lost control between the gyro pull and the sliding in order not to gyro it was a hand full to ride -- reason i stopped it would have killed him if i didnet --jz