changing De Dion tube
changing De Dion tube
Author
Discussion

mac12

Original Poster:

2 posts

230 months

Tuesday 17th October 2006
quotequote all
hi all,

i'm after some advice.....
I'm replacing the De Dion tube on my 1991 supersprint.
Is it neccessary to remove the fuel tank? Can i avoid disturbing the rear brake calipers?
I presume I will need spring clamps of some kind??
Any info would be very useful...

peter-2006

357 posts

230 months

Tuesday 17th October 2006
quotequote all
You don't need to remove the fuel tank but you will need to remove/move the brake calipers.
You don't need spring clamps/compressors once its on axle stands the de dion will drop down and allow the dampers to be undone with out too many problems.

Quite an easy job really but your need a good torque rench for doing up the rear hub nuts.

Hope this helps.

Edited by peter-2006 on Tuesday 17th October 23:08

casbar

1,113 posts

235 months

Wednesday 18th October 2006
quotequote all
Hub nuts need a 41mm socket and they need to be torqued to 200llb

iain a

331 posts

247 months

Wednesday 18th October 2006
quotequote all
You can change the tube without undoing the hub nuts. Just un bolt the de dion ears after taking the brake calipers off.. and the driveshafts, hubs and ears come off as a unit. Then unbolt lower dampers, A frame, top links, ARB and brake pipe. It will then come out one side with a bit of fiddling. No need to take out the fuel tank... Don't try this in a single garage though.. It don't work.

Yes the method works.,. I have done it a couple of times.

Iain

Aeroscreens

458 posts

246 months

Sunday 29th December 2019
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Found this thread as I needed some advice on changing my DD tube.

Iain's method above works a treat thumbup All done in a few hours with an extra pair of hands.

My original '92 tube had been sandblasted, checked and powder coated by Arch in 2008 and it was still in excellent condition but after 10 years of sprinting/hillclimbing it had recently needed some shims to correct some toe-in. It still looks in very good condition for 92,000 miles but as I managed to buy a 2nd one hand of the same design as a spare from a reputable source that was only a few hundred miles old, I decided to replace it anyway. Both tubes are the older style ones with the damper mounting through the DD tube.

The only difference is the later one has thicker walled tubing.