Outrigger tubing size and other chassis Q's? Chim/Griff

[Kitchski]

Done a quick search and found someone mentioned the outer tubing on the outriggers is 38mm. I'm planning to buy in some tubing to repair the ones on my Chimaera, but does anyone know if it's 38mm I.D or O.D?? I'd measure mine, but I think they've probably altered in size in places!

I'm also planning to buy some that's slightly thinner to tightly sleeve inside the original. Anyone tried this before? Guessing I'd need to go about 3mm narrower?

Lastly I'm renewing the corner plates and the seat plate anchor plates on the rear outrigger. This just looks like sheet steel, 4/5mm thick?

Thanks to anyone that can help!

[Poledriver]

On my Wedge I sleeved on the outside, worked well!

[Kitchski]

Any idea what size it was? Not sure if the Wedge is the same or not?
I'm planning to sleeve inside the original tube tightly, spot weld that in and then replace and overlap that section, as I just can't help thinking welding face to face with the same size tube isn't going to be strong enough.

[Poledriver]

Can't remember exact size, it was a very snug fit. I had the same thoughts about the strength of the weld, got a good 3" overlap each end (after cutting back existing member to good clean metal, did a nice weld all around the join!

[Kitchski]

Glad to hear someone else did it successfully. Mine aren't totally shot and I'd rather make good the original bits to keep the geo right. I know what'll happen if I cut the whole section out and put a new one in....the front chassis bolts will line up and the rears will be 3 inches out

[rev-erend]

Cant you just measure your own chassis with a vernier guage.

If someone gave you the answer and yours was made in a different year then it might be different and you would have ordered the wrong steel.

[Kitchski]

rev-erend said:

Cant you just measure your own chassis with a vernier guage.

If someone gave you the answer and yours was made in a different year then it might be different and you would have ordered the wrong steel.

I could, and probably will to be safe, but I wasn't sure if it was OD or ID and I haven't cut it up yet. Plus, there was a fair amount of surface rust on the tubing which I've now cleared; I wasn't sure if that would give me a false measurement.

[clive f]

Its most likely to be 1 1/2" od.

[rev-erend]

Here is a metal supplier that I've used who delivers..

http://www.metals4u.co.uk/products.asp?cat_id=56

Most suppliers quote OD and then you have the wall thickness which will determine the ID.

e.g. 10 swg is 3.2mm, 12 swg is 2.6mm, 14 swg is 2mm 16 swg is 1.6mm, 18 swg is 1.2mm

I believe the Chim/Griff/cerb used 16 swg and the earlier wedge cars used 14swg ..

[eesbad]

rev-erend said:

Cant you just measure your own chassis with a vernier gauge.

Failing that you can wrap a strip of paper around it, mark the intersection point and then take it off and measure the length from the end of the paper to the mark. Divide this measurement by PI (3.14159) and that's the OD

[kostaja]

OD 38 mm
wall thickness 2mm

corner and seat belt mounting plates 3mm

[virgil]

Resurrecting an old topic from a search...are the outriggers made from ERW Tube or seamless? (CDS?) If seamless, what grade is used?

Thanks, Virgil...

Edited by virgil on Thursday 7th June 16:04

[gerradiuk]

Talking of sleeving, fit in smaller tube id x 4" in length inside original tube &, seam weld into place then sleeve onto that with original tube again seam weld,will be stronger than original & last longer.