I have been dreaming of cracking this nut for decades, yet only TODAY did I ever see revmaster's turbo 2100cc horsepower/boost graph!
mine is 2180 so might be off a tad, but Revmaster did a lot of testing, then put the test setup in the attic. Years later I asked and they dug out the test manifolds and sold them to me!. I found a used rayjay and bolted it up best as I could and did some run tests. It does boost, will boost over 33" static ( never flown it) but I was afraid to push it any further. The scuttle I heard (rumor) was they did dyno testing with the manifolds I have. They did not want to sell them because they were high time, the exhaust section does look worn. The revmaster chart says takeoff power at 36" manifold pressure is 80hp. I would have bet 34 tops. I was wrong. Or maybe for my 2180 34 will be tops for the extra 80 cc. Comments? some internet checking says 2" mercury is 1psi, or close. So 29,9 or let's say 30 boosted to 36" hhg is gonna be 3psi boost. And I have been told 3psi boost is the typical amount needed to compensate for the power lost running the exit turbine. This seems reasonable to me. I broke an airplane by being too busy in the cockpit, so now it HAS to be simple, meaning I am not going to be watching the over boost because a simple machine can do that. I have far more important things to do whilst flying. I am not going to reach out and strike a match or flint every other time a piston come to tdc either. I have a mountain range near home so need to climb 10,000 or 12,000 from sea-level ASAP. My natural respiration planes start getting weak around 7000. By 10, 000 I have been waiting Way toooo looong. So 80 hp is fine, but I dont want 50 hp at 9000. Waste gate will be here soon, will add it into the crossover tube and dump it out the bottom. Now to control it........ Oh, and what about a oxy sensor and mixture servo? jg On Sun, Feb 14, 2021, 3:45 PM Chad Robertson via KRnet <krnet@list.krnet.org> wrote: > I kind of had the same question on turbos I had considered putting one on > mine and the over boost was a concern I was just wondering if you knew that > 38 inches was equal to 12 pounds of boost which I have no idea just just > throwing out numbers could you not get a turbo with a build in wastegate > that is set at 10 pounds of boost because they make several turbo chargers > with adjustable waist gates > > _______________________________________________ Search the KRnet Archives at https://www.mail-archive.com/krnet@list.krnet.org/. Please see LIST RULES and KRnet info at http://www.krnet.org/info.html. see http://list.krnet.org/mailman/listinfo/krnet_list.krnet.org to change options. To UNsubscribe from KRnet, send a message to krnet-le...@list.krnet.org
