New Valve system

[Anonymous]

It is supposed to replace Cam, Lifters, Pushrods......
Interesting



NEW VALVE DESIGN


ftwfred

 

[Anonymous]

think they can make em for our sixes?

 

[rbohm]

8) they have been developing that technology for a few years now.

 

[Anonymous]

I am sure one could be done for the big six, $$$$ is all it takes.
Belt drive, I would imagine.

ftwfred

 

[SuperMag]

Certainly is elegant...

 

[Anonymous]

Yes it is very elegant...
Has to be quite a weight reduction also, NO cam NO gears no Chain no pushrods no lifters..

SuperMag, Did you order yourself one while you where at thier site??
I wonder what is the cost for the bike??

ftwfred

 

[Thad]

Ever wonder what the glitches are?

Rotary valves have been tried sine the early 1900s and when company like Rolls-royce, BMW-Aero, Curtis-Wright and a bunch others gve up on them in WWII. Coates has ben around 10 - 15 years.

 

[SuperMag]

Ever wonder what the glitches are?

Getting the buggers to seal would be my guess. To accomodate a spinning valve you would have to have a clearance tolerance, particularly on the exhaust side. If somehow you could solve the "valve blow-by" problem I'd imagine it would be quite the system.

 

[Anonymous]

There have been many attempts at rotary/non-poppet valves in four stroke engines. The Bristol Centaurus, a WW II radial aero engine, was relatively successful using sleeve valves. Super Mag summed up the problems in a nutshell -- rotary valves either run dry and seize up, or burn oil excessively. The Centaurus's sleeves had to be hand-fitted to their respective cylinders and did not interchange, and oil consumption was described as "acceptable", which might be a lot higher than a car engine could live with. On the positive side, the Centaurus was very compact for its displacement and much quieter than a conventional radial.

Maybe the solution lies in materials, graphite or ceramic or....

 

[80broncoman]

I heard about while at crane. The engineers there said that only way they will live is to be ceramic to keep from burning up. they stated a engine with these will turn a very high rpm.