HI,

I was planning to use one of your 22.2mm ID Carbon Fibre Tube (Roll Wrapped) as part of a cooling pipes system on a motorbike.

Please, could anyone confirm that  this tube is suitable for water routing ?

I assumed it is made with epoxy resin  and therefore should resist to water, but I would like to get it confirmed, please

Could it also endure oil, fuel, etc ... ?

 

Many many thanks,

It is not designed as a cooling system pipe, although the tube should be fine with exposure to water generally.

however, in an automotive environment, most cooling systems are pressurised and use a range of anti-freezes and additives. Without testing, I've no way of knowing if the pipe would take the pressure of a 120C race cooling system on a hard worked bike.  I also don't have any specific data on if the anti-freeze would effect the epoxy based resin or not.

Warren Penalver
Easy Composites / Carbon Mods - Technical Support Assistant

Hi,

Many thanks for your answer.

The system is going to be filled with pure water only and I'm not too concerned about the pressure at it should stay below 1.5 bar.

So I think it should work.

I have successfully coated both inside and outside of CF tubing with High Temp Resin from EC, the tubes are used on a drag racing bike, and generally temperatures do not get much above 100 deg. celcius.  Running pressures are less than 1,5 Bar certainly,

We have had two instances of extreme temperature and pressure, one due to a gas leak from a blown gasket into the cooling system. In both cases the CF tube was undamaged and showed no signs of distortion. The Cooling system expansion tank and overpressure valve probably releases pressure way before it becomes a problem for the CF tubing..

The Ethylene Glycol and anticorrosion additives used in modern coolant should not affect high quality epoxies.

I will do a test  setup ... such knowledge may come in handy ....

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