GT40 Tech - Powertrain/Transaxles | Forum profile

Danny, I had my shaft made up to suit a few ideas I had along the way. You dont need to grind the bearing surfaces of the gears, they are big enough. What you do though is grind out the 'centre' of the shaft bearings, eg: the end thrust bearing and the front input shaft bearing. Take about 1mm out and you get an extra 2mm of shaft size. My shaft is now a minimum of 27 mm between the shaft bearings. The 5th gear issue. I ground out...

Bruce, Stephane thanks for your advice. You've both given me a lot of new interesting stuff about these boxes. Bruce that shaft looks very strong. What engine and car weight was it built for? I'm thinking with my plans, 2.5tt currently 206kw but potentially capable of 300+, in a 1300kgs car I may be ok with Albins standard gearkits. Or perhaps just them to increase the 5th gear end of the shaft. The bell housing I'll be using...

Bruce, please let me know if you need additional information. Best, BLT

Danny For what its worth I would not touch the gears with regard to machining out for larger bearings due to the problems you make for yourself if you break a gear and cannot just replace it with a standard gear without having it modified. In the interest of reliability I have found that to run standard unmodified parts makes repair so much easier and cheaper than having to wait while specialty parts are made to order. Dimi

Quote: Originally Posted by WYLD Lynn, did you have to interpolate off center of the 930 holes, or are they on the same hole-centers? I found that the OD of the CV and the existing 930 bolt circle where concentric with each other and an even 60 degree bolt pattern. As I remember it was a 94 mm bolt circle. once the machine was set to the center of the 930 bolt circle I selected the CNC to machine the holes of new 96 mm circle and machined the...

Lynn, did you have to interpolate off center of the 930 holes, or are they on the same hole-centers? Quote: Originally Posted by Lynn Erickson it is 2mm bigger diameter then the 930 CV but the CV material is easy to machine out to make the hole oblong the 1mm on all the holes. I was told that there are some cv's that will fit but I tried three different manufactures and did not find one that would fit with out forcing it. I made a jig...

I'm interested in converting a G64 to G50. Any help on how to fix the rotating shaft issue?

Quote: Originally Posted by Nick Brough Nick, the bottom line is rod shifters can be simple but realy only if you are RHD and RHShift if you want a centre shift you probably need to go to cable. Cheers Leonmac Leon, Thanks for the advice in the end Southern GT made me up a very elegant system while they were adapting my chassis for a G50 box.

Bill, Did you ever get the chance to post the other pics? Adrian

Guys, the simplest rod shifter on this forum and it works a treat is Russ Nobles (Kiwi Scratch Built) no rod ends, just a couple of swivel joints and a rifle bolt type setup at the lever end and thats it. Nick, the bottom line is rod shifters can be simple but realy only if you are RHD and RHShift if you want a centre shift you probably need to go to cable. Cheers Leonmac