Reed Valve breather

Hobot · Mar 12, 2012

I know Jim has measured effective function with TS case about sealed and reed valve direct off crank case, so can't contest against it working as stated. To be picky and encouraging slapping around on this, the only purpose for PCV check valve is to stifle oil escape, as ain't going to get low enough PSI for windage density relief w/o active evacuation, so when Jim says 'was more effective' does he mean he still had oil leak pressure on first placement yet none on the current placement?, or did he mean just got more efficient lowering of pressure, but same end result, dry, no leaks cute device?

On the other hand, against my own point of venting TS case, is the pumping resistance though case restrictions. How big of holes needed vs how weakened it can get too, ugh. Alas if its not factory its too good for Trixie who stayed dry with PCV by tank, till Texas trip hast w/o re-torque did in the head seal.

If ya really gonna stick with this reed valve advancement might look into this.

r.[1]

Composite materials are preferred in racing engines, especially in kart racing, because the stiffness of the petals can be easily tuned and they are relatively safe in failure. High-speed impact takes its toll on all reed valves, with metal valves suffering in fatigue. The physical inertia of reed valves means that they are not as entirely precise in action as rotary valves, a rotary valve engine may run better than a reed valve engine at a small rpm range but the reed valve engine often runs better over a wider rpm range. More sophisticated designs partly address this by creating multi-stage reeds with smaller, more responsive reeds within larger ones that provide more volume later in the cycle.

By far most the jerky and back strap venison I've had was taken by .22 dropped on the spot by efficient head shot w/o no stinking papers neither. I don't shoot deer, I use my brains instead, ugh.

madass140 · Mar 12, 2012

"I don't shoot deer, I use my brains instead, ugh."

Now thats funny.

comnoz · Mar 12, 2012

hobot said:
I know Jim has measured effective function with TS case about sealed and reed valve direct off crank case, so can't contest against it working as stated. To be picky and encouraging slapping around on this, the only purpose for PCV check valve is to stifle oil escape, as ain't going to get low enough PSI for windage density relief w/o active evacuation, so when Jim says 'was more effective' does he mean he still had oil leak pressure on first placement yet none on the current placement?, or did he mean just got more efficient lowering of pressure, but same end result, dry, no leaks cute device?

On the other hand, against my own point of venting TS case, is the pumping resistance though case restrictions. How big of holes needed vs how weakened it can get too, ugh. Alas if its not factory its too good for Trixie who stayed dry with PCV by tank, till Texas trip hast w/o re-torque did in the head seal.

If ya really gonna stick with this reed valve advancement might look into this.

r.[1]

Plugging the holes makes for a little more depression that stays to a higher rpm and load. With or without the holes seemed to take care of the oil leaks. I stay away from horsepower claims as there are too many variables involved and the gain is likely to be pretty small.

I tried the carbon fiber reed valves and they didn't make as good a vacuum as the steel reeds. Not real sure why but I suspect it had to do with the resonant frequency. Jim

Click to expand...

Hobot · Mar 13, 2012

Ok, just as I thought reed valve or PCV both work for oil sealing and your current arrangement just moves meters better. Still way to go getting even more reserves in the right direction. The quotes were for use in 2 strokes which can tune performance with these because its part of the mixture intake and exhale system, not merely blow by venting. I went off on a tangent looking up reed valve stuff to come across their resonance features, especially in musical instruments, but got over my head and obviously over kill for Norton needs. I thought Trixie needed more breathing assist when 1st started smoking after 1000 miles or so fine on factory breather, so I thought of your reed valve for sure, but then found mechanic and mechanical reasons, so will try again with just a Krank PCV.

Of course I expect Ms Peel can suck the chrome off ...>>>

Reed Valve breather

Hobot

madass140

comnoz

Hobot

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