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-   -   Rear upright tube - tolerance (http://www.haynes.co.uk/forums/showthread.php?t=4229)

filip arvidsson 6th May 2010 08:19 PM

Rear upright tube - tolerance
I'm trying to source a 5inch, 127mm, tube.
I've found a 130mm tube, would that tube work or should I order a 5inch tube from England?
Thank you

Bonzo 6th May 2010 08:43 PM

I would imagine that the wall thickness would be the most important thing ;)

You'll almost certainly be able to make allowances for the extra 3mm OD when you fabricate the jig :)

Just measured a piece of standard UK spec 5" pipe

The wall thickness is 4.9 mm & the oD is 127.5 .... As steel sizes are nominal, I would not be surprised to find a piece of 5" pipe with an OD of 130mm nor as little as 125mm :)

If the wall thickness is there, I would say, go for it.

filip arvidsson 7th May 2010 05:42 AM

The wall thickness is 3mm, as per the book?
Has this been changed?
Thank you

Bonzo 7th May 2010 08:35 AM

Hi Pilip

No the book spec for the wall thickness has not been changed :)

If you can get some pipe that has a wall thickness of at least 3mm & the OD is 130mm, that should be ideal for the job

My 5" pipe just happened to be off-cuts from my suppliers standard stock & has a nominal wall thickness of 5mm .... Could have got 5" with a wall thickness of 3.25mm but would have had to buy a full length :eek:

What you have found should be fine & will save the extra cost of obtaining from the UK.

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