100mm cv's on 90mm shafts..

[pepperwhite]

Tools required: Angle grinder

Did this for a friend the other day..

[gldgti]

thats it? just an extra groove around the back of the splines?

more detail please - i'm sure there are others who would benefit

[WABIT]

more info please

wabit

[Preen59]

Looks to me like you need to take about 5mm off the shoulder, as in to move the shoulder 5 or so mm further back to accommodate a wider CV? The relief would only be needed because the spline in the CV would otherwise foul, and also the angle grinder wouldn't exactly give it a nice square corner and the CV would foul there also.

More info please. I need to put 100mm CV's on my driveshafts to accommodate my 16v box.

I'll machine mine on the my lathe though, and i'd advise anyone else to get it done that way too.. Angle grinder is a bit IMO. Not a bad job with the grinder though, Pepperwhite.

[abreut]

I did the exact same thing to my driveshafts but I used a lathe. Can't remember exactly how much had to be removed.

Latheing it isn't that easy either because the material is so damn hard, had to go really slow. Ended up blunting the tool a bit (my mates tool, sorry). Also when clamping the shaft in the lathe it doesn't turn exactly true because I guess the driveshaft isn't a machined finish except for at the ends. I had to under-cut a little bit to get it to clear on all sides. Maybe I should have clamped it by the splines themselves. Anyway it works. I don't think those inner CVs will ever break.

[Preen59]

I did the exact same thing to my driveshafts but I used a lathe. Can't remember exactly how much had to be removed.

Latheing it isn't that easy either because the material is so damn hard, had to go really slow. Ended up blunting the tool a bit (my mates tool, sorry). Also when clamping the shaft in the lathe it doesn't turn exactly true because I guess the driveshaft isn't a machined finish except for at the ends. I had to under-cut a little bit to get it to clear on all sides. Maybe I should have clamped it by the splines themselves. Anyway it works. I don't think those inner CVs will ever break.

If the ends centredrilled, you can put the shaft between centres and take a skim to true that surface up, then hold it in the chuck that way, or machine it between centres. Using a carbide parting or grooving tool would be fine. Spin it at about 300rpm and use lots of coolant. Trick is to put a fair amount of load on the tool to keep it cutting. Not too much or you will shatter the tip. Aslong as you keep it cutting it will be fine. Not enough tool pressure is actually what does damage to carbides. With a parting tool or grooving tool you get a lot of flank wear if you don't keep them cutting.

So remember, keep it cutting, keep it cool, and you'll be fine.

[abreut]

Its been a while since I did them but I think they might be centre-drilled from memory. Either way I'm a bit of a beginner on the lathe and kinda fumble my way through. The way you mentioned probably would have been the better way to do it. I know what you mean though, you find the right speed and the right feed and you find that sweet spot where it cuts just right. I used to have access to a lathe and I really enjoyed using it. Wish I owned one!

[Preen59]

Its been a while since I did them but I think they might be centre-drilled from memory. Either way I'm a bit of a beginner on the lathe and kinda fumble my way through. The way you mentioned probably would have been the better way to do it. I know what you mean though, you find the right speed and the right feed and you find that sweet spot where it cuts just right. I used to have access to a lathe and I really enjoyed using it. Wish I owned one!

Yeah they'd nearly have to be. Don't worry i'm a machinist/toolmaker and i only learn't (like everyone) from advice, experience and mistakes.

[pepperwhite]

The 100mm cv is a little wider than the 90, i didnt really measure anything. I approximated how much had to be removed and started grinding, it was surprisingly easy.

Yeah its pretty backyard but i expect it to be fine..

[Preen59]

The 100mm cv is a little wider than the 90, i didnt really measure anything. I approximated how much had to be removed and started grinding, it was surprisingly easy.

Yeah its pretty backyard but i expect it to be fine..

No worries man. I'll work it out when i do mine and post it on here if i remember. Thanks!

[Golf Loon]

Nice work man. The end of the saga. Is the car running now??

[static1800]

No worries man. I'll work it out when i do mine and post it on here if i remember. Thanks!

Might have to send you some to do

[Preen59]

Might have to send you some to do

No wucking furries man. Let me screw up mine first so i can get yours right though. .