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Question:

Can I use Large Medical syringes for my motorcycles brake/clutch resorvoirs?

what's the cons? can someone tell me the hazards on this? any possible affects on the boiling or overflowing? I have seen it on someones hayabusa and I'd like to do the same. I see no reason why because there is not presssure on the resorvoir as i know unless the fluid boils. any ideas?

Answer:

I know that many use syringes to top up the fluid in the forks but have never seen them become part of the bike. Have you tried a online search. Sorry I cannot help you but if anyone does figure out how to make an engine out of soup cans can they let me know as it would have to make racing a whole lot cheaper.
Brake fluid is caustic. It will eat paint and distort some plastics. So unless you are sure that the plastic in the syringe is compatable, then I would say no. The other thing is you must have as air tight of a system as possible as well as water and dirt tight. I do not know if any syringe is capable of that. And yes many brake system do develope a small amount of vacuum in them, without knowing what system you have, hard to say if yours does or not, but using a device for something it was not intended for, while it would be Cool looking, is probably not smart here. Better to have someone fabricate something that IS able to withstand the elements-air, water, heat and chemical then to guess and guess poorly.
There's all different kinds of plastics and each has its own properties. As ? said, the brake fluid may react adversely and you end up spilling fluid all over your tank. For taking it out it may work ok as a one shot deal, but there's no way I'd use one to fill the reservoir. Brake fluid will cause ordinary rubber to swell up a considerable amount and a plastic syringe has a rubber tip on the plunger. I could just see you sucking the syringe full of new fluid, the rubber tip swells and in an attempt to put the fluid in the reservoir, you squeeze, squeeze, squeeze and all of a sudden it sprays fluid all over everything. If you wish to use a syringe, an all glass one like used in laboratories would work.

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