ALFAGTV6.COM

[BradGTV]

ive heard alot of people on here mention these "donut cages" i assume when people say this there are talking about something similar to in the picture below?
just wondering what the benefits are of having these in the driveshaft?
cheers, Brad

[MD]

The black one will restrain the buldge of compression under hard shaft rotation and thereby limit this rubber movement and contain a fractrure failure.(aim)

The triangular plates do sweet FA cause the donut is laready triangulated internally.

[BradGTV]

thanks MD,
do u have much experince with these?
are they worth the effort making them? (Black 'cage')
cheers, Brad

[MD]

Brad

Take it as a given that if you want to take your car racing, you should have these covers to save the donuts.

[BradGTV]

thanks MD, in that case, i will be making them
for all 3 donuts, yes?

[MD]

Well ideally yes. Consider each coupling as part of a 3 link chain. If any link breaks, what have you got? No drive ! Well not exactly but you certainly wouldn't race with it. Vibrating like shit is ok to hobble home but not to race with.

Last Morgan Park meeting I went to that lasted over the week-end, one guy broke 5 donuts over 2 days and changed them all. ABSOLUTELY Ridiculous !!

Having a shroud over your couplings will minimise this problem. Just be sure that the fit around the internal circumference is close.

[BradGTV]

thanks MD for your help, great info

[xrad]

Brad..are you making these yourself?

[marco/hamburg]

I used the part for a long time and have no problems with durability.

[BradGTV]

good to know marco
and yes xrad, i plan to make a few sets for all my cars.

[xrad]

Are they made for all three guibos?

[kevin]

It's only really necessary to run cage on front one. Over thirty hard races I have never had a failure except a cenre coupling but that because I had an inferIor grey import part. To make it(cage) is another story. There must be a 4mm space between the cages as the engine moves and twists. To find a pipe with correct ID is impossible so you will have to machine a 10mm thick walll pipe. Then laser two plates .
If you have some one here in SA I have two sets left . Not cheap but you will save bell housing,flywheel and donut when it explodes. 250 AUD and you can collect. Easier said than done.

[xrad]

thanks for offer...don;t really know anyone there.....

Come to think of it, I only had one rear guibo go and at least three fronts...never a middle.

[MD]

It only happened once but I had a segment break out of all three couplings AT THE SAME TIME.

Make of that what you will.