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Re: Automatic bleeder
Re: Automatic bleeder -- komet99	Post Reply	Top of thread	Forum

Posted by: CCR5600Design ® 06/25/2007, 15:45:06 Author Profile eMail author Edit

Komet, I think your idea of the 0.020" hole has merit. Remember, with this new hole, the clutch assembly will "breathe." I would highly recommend using some type of filtration as to keep any contaminants out of the oil as when the clutch cools off, it will draw air into the housing. You may experience some "weeping" of oil through the hole. "What we need are more people who specialize in the impossible." - Theodore Roethke

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Re: Automatic bleeder
Re: Automatic bleeder -- komet99	Post Reply	Top of thread	Forum

Posted by: randykimball ® 06/24/2007, 09:56:14 Author Profile eMail author Edit

I'm a bit confused why the heat expansion gasses that will unexpand when the fluid cools needs to be released after a race that was not released during the race. Is it to let the fluid defoam so you can race again sooner? So do the fluid and the clutch body all rotate? You can do this, although it may sound like it, it is not at all complicated. You would purchase or make a two part housing device that fits over the shaft with o-ring seals between it and the shaft, near to the clutch body. This device would have a rotating half (end) and a not rotating half. The two halves would have a seal between them, (best idea would be a spring loaded carbon/cermamic face to face seal liked used on fluid pumps). You would install a tube from a smaller diameter area of the clutch to the rotating half. The non-rotating half would have a tube going up the back of the seat to a small tank which would function like the expansion tank of a radiator (a large enough diameter tube here could eliminate the tank). This new two half device simply becomes the joint between the rotating and non-rotating tubes. Realize that the rotating half would need to be clamped to the shaft, and the non-rotating half would need a bushing or bearing to carry it and a thrust bearing (could be the same bearing) against a set screw collar to maintain tension against the carbon/ceramic seal. In theory, the fluid could let off expanded gasses via this tube system. Any fluid loss would simply be temporily pushed up the system towards the tank and then drawn back when the clutch cooled. The thing is it would work during operation too. Idealistly, (and MUCH better) one could redesign one clutch body half to also become the rotating half of the deivce. So, the non-rotating half, a set collar, a tube, and a small expansion tank (if needed) is all that would be needed to be added to the cart. The worst suggestion of your lifetime may be the catalyst to the grandest idea of the century, never let suggestions go unsaid nor fail to listen to them. Modified by randykimball at Sun, Jun 24, 2007, 10:19:57

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Re: Re: Automatic bleeder
Re: Re: Automatic bleeder -- randykimball	Post Reply	Top of thread	Forum

Posted by: komet99 ® 06/26/2007, 18:00:45 Author Profile eMail author Edit

I have drilled a .029 hole in the clutch because thats the smallest my drill press would hold. I plan on affixing a sponge of some sort to the area where the hole is. One, to not allow high pressure fluid to blow out, but to absorb the fluid release. Two, as stated above, a filtration device. I will keep you posted after July 7 as to how well this works, and how the clutch worked. Bones

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