Radiator repair

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bic_bicknell
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Radiator repair

Postby bic_bicknell » Fri Jul 24, 2020 7:00 pm

After 13 years of faithful service I was loosing coolant on my KTM and struggled to find someone to find the leak and fix the radiator. Just seems like this is a dying skill and there are few specialist places left operating. (bike shops are useless - rang about 6 and none could help). No.47 put me in touch with guy he knew but so far I haven't been able to get in contact with him.

So decided to do it myself.

I took radiator off and used two wine corks to bung the inlet and outlet pipes. I drilled a hole in one and epoxied in a bike tyre valve so I could pressurise the radiator and immediately found the hole. It was a minute hole corroded in the back and was showing little bubbles when submerged in water. Was going to try aluminium solder but thought getting the radiator part hot enough was asking for trouble so mixed up some two-part chemical metal weld and covered the hole. Ten minutes later the radiator's fixed and it holds 20psi of pressure no problem.

So, in retrospect, my advice is to do it yourself!
Past: Honda CB125J, Honda TL125, 1963 Triumph Tiger 90, Yamaha RD250, Kawasaki KH250, Kawasaki 400 S3, Kawasaki KH400, Kawasaki Z400J, Suzuki GS750, Suzuki GS1000, Ducati SS900 Superlight, KTM LC4 Supermoto, Honda VFR 800i, KTM Superduke '07.

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Scotty
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Re: Radiator repair

Postby Scotty » Sat Jul 25, 2020 7:31 am

Told you.... :wink:
Good effort, and well worth doing.
Wheelies - they ARE big, and they ARE clever....

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TimR
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Re: Radiator repair

Postby TimR » Mon Jul 27, 2020 6:55 am

Good to hear. Great ingenuity - especially the bike tyre valve bit :)


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