big_wasa
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| posted on 28/8/07 at 09:10 PM |
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Down link question ?
Made my down link today  The ends are push fit, 45mm into a piece of 3mm wall tube . Fully welded.
Question I was going to cross drill it and put in some 4mm roll pins as an extra piece of mind.
Is this a good idea? or have you got a better one
[Edited on 28/8/07 by big_wasa]
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Peteff
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| posted on 28/8/07 at 11:44 PM |
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Do you trust your welding?
Welded works fine. Drill a hole in it and weaken it I think is my theory.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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locoboy
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| posted on 29/8/07 at 08:31 AM |
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If you feel you must, maybe drill a hole either side through the outer only and plug weld it.
ATB
Locoboy
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James
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| posted on 29/8/07 at 09:24 AM |
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At someone's suggestion years ago I cut the end of the extension at 45°. This meant there was a much larger welded area.
It hasn't failed yet..... fingers crossed! 
------------------------------------------------------------------------------------------------------------
"The fight is won or lost far away from witnesses, behind the lines, in the gym and out there on the road, long before I dance under those lights."
- Muhammad Ali
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big_wasa
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| posted on 29/8/07 at 02:28 PM |
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Ta,
I cut the ends of the tube at 45 deg and plug welded as an extra.
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JB
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| posted on 29/8/07 at 06:34 PM |
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Welding with 45 degree ends is an excellent idea.
However because I worry a lot, I drill and put 2 pins in (at 90 degree to each other) and then braze the whole lot together. I worry about the
embrittlement with welding and cracking on the heat effected zone. I know the chances of it happening are very remote but when there is another method
that improves I use it.
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