Author Topic: DRAGONFLY FRAME MATERIAL  (Read 713 times)

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Offline Buzzie

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DRAGONFLY FRAME MATERIAL
« on: 14 Nov 2019 at 17:49 »
I have just bought a Dragonfly. Its frame has the start of a small crack and I need to have it welded up.

The question is what mateerial are they made of? I have read they were designed and made by Reynolds. Is it therefore made from mild steel tubing o roner of their special alloys such as 531 which was widely available in the 1950s

Any information gratefully received!

Thank you, Douglas

Offline John Caffrey

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Re: DRAGONFLY FRAME MATERIAL
« Reply #1 on: 17 Nov 2019 at 12:00 »
I believe they used "531" but its also possible that they used another (thicker wall) good quality Renolds tube.
Either way it`s not problem, find the start and end of the crack and drill a hole (about 2/3 mm) at both ends.
ideally slightly enlarge the crack and just fusion weld it up with a good quality rod, I suppose you could MIG
or TIG it but I prefer an oxy acetylene torch.  If its neat I`d just clean it up - filing it might weaken it.

Offline Buzzie

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Re: DRAGONFLY FRAME MATERIAL
« Reply #2 on: 19 Nov 2019 at 16:46 »
Hi John,
Thanks very much thats really helpfull.

Im taking it down tomorrow for welding, so I'll report back on how I get on!

 

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