irs aluminium outdrives

[warr]

Can anybody tell me if irs outdrives are a direct replacement for the plastic outdrives, or do I need to buy the older style diff rings, bearings etc as used with the steel diffs.

Thanks.

[ste12]

yes but you will need to get some T nuts to go in the irs out drives

[Chrislong]

What car are you guys talking about?

Are the outdrives on the RC10B4 already aluminium?

[Phil C]

I Think there on about the tc3 out drives. Make sure you use irs pin cusions or they will last a very short time (2 weeks). Yes they are a direct replacement but there is no hex hole for the nut??? i had to do mine up using very small pliers.
Phil C

[Chrislong]

That sounds a bit fiddly.

is it possible to tell the difference on the track using the alloy outdrives? i.e. is it worthwhile doing?

[Phil C]

not altall its a big waste of money. the plastic outdrives are much better.
Phil C

[TC3]

hi david
the irs diffs are a lot smoother and reliable if looked after especialy in modified.
you need to buy new t nuts so u dont have to hold with pliers etc.
the latest diffs accept the dee rings alsothe bolt and spring etc build the opposite way round but is exsplained in the instructions with the diffs.another tip if you look close at the dee rings you will see a sharpe edge and rounded edge where they have been pressed out fit the sharp edge to out drives it makes them a better fit.
use silicone diff grease on main balls and black grease on thrust balls.

hope this helps n wilson


ps i use car constant velocity grease on the thrust balls cheaper

[warr]

Thanks for the replies.

Phil it sounds like you don't have the nut carrier fitted.
And the reason for fitting the aluminium outdrives is because the plastic ones melt with mod foam at Hinckley. At least three of us have had this problem.
But for 19T and stock yes they are a waste of money.

[Stew Noble]

:o :oMELT :o :o, which area......is this common?


Stew

[warr]

Well melt is a bit of an exagerration.
What actually happens is as the plastic gets warm it softens and causes the diff too slip lots and the action to tighten up.

The diff will usually appear ok, but you won't be able to get a good action. It is only a problem if you have very high traction and lots of horsepower.

[B3buggy]

hi all,
had mine melt before, actually melted round the diff rings and so had to cut the rings out of the plastic with a scalpel ::). only happened about twice though :-X. now run IRS ones for 2 years and havent had a problem, excpet it is advisable to get the pin cusions otherwise the slop will appear after one run. the wear is like nothing i have ever seen without pin cushions. :D

Ross

[Richard Lowe]

I had a 2 minute run last Sunday with the palccy outdrives in the TC3 buggy on carpet with new minipins and a 9x1, you should have seen the mess it made of the rear diff :o

[Ben Turner]

Ive just got the IRS diff and is it right that you put the spring on the same side as the t-nut, as opposed to the side of the thrust assembly on the plastic diffs?

ta,
Ben

[Richard Lowe]

Yup, the spring is on the nut side in the associated buggy diff's and the steel TC3 diffs too.

[Ben Turner]

Ive just built the irs diffs up and they are a lot better then the plastic ones, smoother, and seem to make the mesh truer.

Ben