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Magnesium Frames And Bikes


ZHI_Chris

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Hi,

I had a magnesium alloy XC bike about 15 years ago. It was an injection moulded kirk revolution, part of the marketing proudly claimed that it was made from a "cubic meter of sea water". There was also a kirk revolution road bike that was used in the tour de france, you could buy the low end mountain bike in halfords. It was even featured on Tomorrows World where they drove a landrover back and forth over the frame to showcase the strength of it.

As this was 15 years ago and an injection moulded alloy frame rather than a tubular welded frame, I am sure the technology has improved.

The reason that we are not all riding around on kirk bikes is because they all broke. Most of the fittings were aluminium or steel bonded into the magnesium alloy, mine broke at the rear drop out, a more common fault was for the rear brake posts to snap out of the frame - a bit of a problem brakes snapping clean off your frame just as you dive into a corner.

It looked cool while it was in one peice, kind of like girders.

Just found pictures on this web site - http://www.kirk-bicycles.co.uk/Images/Kirk...X-Review-1b.jpg

Duane.

Edited by duane
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It may not quite be along the same lines, but experiences with magnesium pedals haven't always been too favourable thread-wise, so the BB and brake threads might be a sketchy area unless they're all helicoiled first or something?

I just can't see them being that strong at that weight. The price is also ridiculously low...

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Oh Ian :P You know me so well...

I'm all for people trying new ideas, it'd just be nice to get any kind of REAL info about the frames other than a claimed weight figure and a tempting price tag.

BTW, <3'd your last pics in the RPT.

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  • 3 weeks later...

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