driving up an offramp on local motorway when hell erupted in my transmission tunnel. seems my prop had a rubber donut which at that moment
disintegrated.
tunnel got pounded until i got stopped and was very lucky it didnt come through and mangle my leg!
ripped a hole in the floor pan tho.
so obviously I wont be refitting a prop donut so can anyone tell me what I need to be fitting as a propshaft? All sierra gear with T9 box.
just as I was selling up to buy a BEC too 
Get a decent prop company to make one for you . Bailey Morris in Eaton Socon near St Neots are very good.
and while you're at it, convert to BEC if thats what you want to do!
I've got a nice prop you can have for free (it's got a car attached to the rest of it though).
Pat ;-)
quote:
Originally posted by Avoneer
I've got a nice prop you can have for free (it's got a car attached to the rest of it though).
Pat ;-)
quote:
Originally posted by cerbera
quote:
Originally posted by Avoneer
I've got a nice prop you can have for free (it's got a car attached to the rest of it though).
Pat ;-)
lol. Nice sales pitch!
If we is givin it away....... Me will have it 
You can get a propshaft made up with a UJ in place of the donut (which was more of a shock absorber than a UJ in the original Sierra fit). RH used to do one to fit using your supplied front and back ends - not sure if present company do the same but plenty of other suppliers. Good job its got a thick tunnel wall not alloy sheet.
Im going to fit a prop retaining band bit of flat section bent to form a U shape and bolted through the floor this keeps it from flapping about if it all gose wrong. my brothers boss has one fitted to his race cobra.
I thought the rubber donut was on the MT75 on the higher spec sierras as was previously mentioned to ease the power take up
quote:
Originally posted by westcost1
Im going to fit a prop retaining band bit of flat section bent to form a U shape and bolted through the floor this keeps it from flapping about if it all gose wrong. my brothers boss has one fitted to his race cobra.
pics added - was nasty one alright!
ooooh, close to taking out a brake line too 
guess whats being rerouted 
quote:
Originally posted by geoff shep
You can get a propshaft made up with a UJ in place of the donut (which was more of a shock absorber than a UJ in the original Sierra fit).
The pin actually goes into a spherical bearing to allow angular movement.
Note that an almost identically similar joint was used in the driveshafts of quite a lot of cars with IRS (imp, original elan, GT6) so they can take
a) a lot of torque and b) up to nearly 20 degrees (I had an elan.......).
In the particular application above it looks as though too much of the spline was used, i.e. the prop was rather shorter than it should have been, so
the gearbox part of the joint was able to move over an inch away & defeat the failsafe centre pin. I'd also suspect it had been on the way
out for quite some time! Regardless, it must have been a very unpleasant experience!
Bob
my m3 had one (rubber donut) so it cant be that bad, prob as old as the donor tho lol 20yrs
quote:
Originally posted by Bob C
The pin actually goes into a spherical bearing to allow angular movement.