passed my sva last Monday, wet to Tuesday the next morning, dvla inspection Friday morning and then went into dvla yesterday afternoon where i finally got my reg no

went out and had a pretty good drive apart from a few missed gears.

for as long as i can remember (last sva and trip to have its emissions done) Ive had a vibration from the prop if I'm at a steady speed above 50, i put it down to how the middle support is mounted and was going to do something to dampen it this weekend.

not needed! about 500meters from home i get a wobble in the car, clutch down and it gets better then gets very bad (all happens in about 3 seconds)

BANG! - sprocket adaptor coming off gearbox
BANG! - sprocket adaptor smashing through gearchange cable

thud thud thud thud thud then i realised what it was, shat myself and slammed the brakes on.

had to tow it home at about 1 mph as it sounded awful as the prop bashed around.

chassis / prop / adaptor and surrounding area all look fine but I'm not sure about the gearbox output shaft at the mo, will have the engine out later and give it all a good going over.

god i hate Friday 13th!

[Edited on 14/3/09 by dan__wright]

Wow, bad luck

oh dear thats not good at all. at least noone was hurt
good luck with the fix

chris

Nightmare!

Unfortunatley quite a common failure.

New nylocs, threadlock and locknuts req'd.

Mike

Nasty, but at least nothing came through the tunnel and hit you.

My prop adapter came loose 2 weeks ago. Luckily, the prop was sized so that with the end moved all the way in, the adapter doesn't come off the spline. Annoying though. Clean up the threads with solvent to get the oil off. Put the nut on with plenty of thread lock.

within the first week of me getting number plates, one of the half shafts came off It was then that I remembered I'd run out of thread lock at the one end and was going to go back to it. Oops. 2 of the bolts were lost, 2 had come loose and the last to snapped. Still, no harm done.

Had the prop been professionally balanced? If it was vibrating since day 1 it sounds as if it might not have been done correctly.

Glad you weren't hurt, flailing props can be very nasty.

Sorry to hijack, but do most people use bolts that go right through the prop adaptor, with a nyloc on the back? I have bolts that go through by about 5mm, and I used plenty of thread lock. Now you have me worried I will lose my legs on the way to SVA! What have most done?

Well, my Escort back axle spent most of its working life with bolts loctite'd in place by Ford...

If you make sure that the threads on the bolt and in the hole are REALLY clean before applying the loctite, then only a hard pull with a spanner will ever shift them.

quote:

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Originally posted by twybrow
Sorry to hijack, but do most people use bolts that go right through the prop adaptor, with a nyloc on the back? I have bolts that go through by about 5mm, and I used plenty of thread lock. Now you have me worried I will lose my legs on the way to SVA! What have most done?

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I don't have room behaind the prop adaptor for nylocs, but I suppose wire locking might have been possible.

I also couldn't use the origianl bike locking washer, as it didn't go inside the prop adaptor. I just used plenty of threadlock. On the plus side, with my centre prop mount in place, you cant actually pull the prop adaptor out of place, as it has nowhere to go.