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Always interesting to hear of excursions from the stock 2 rotor format.
Does anyone recall the gent who was going to make a rotary engine out of titanium? As best I recall I believe he actually had a rotor tact welded reportedly out of titanium plate - there were some photos. I doubted at the time that anything would come of it, but it was interesting to see what some folks are willing to tackle.
Ed
----- Original Message ----- From: "Ernest Christley" <echristley@nc.rr.com>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Friday, June 06, 2008 9:59 AM
Subject: [FlyRotary] Re: Big engines
Lynn Hanover wrote:
In this case you could machine away one face or both faces and braze two
rotors together. One end with the gear and the other without. You could have
twice the bearing length, and nearly twice the displacement.
Just the crank, rotors and housings would be special. Everything else could
be stock pieces. Maybe double the torque, could be direct drive?
Those voices keep talking to me.
Could you use two rotor housings, brazed then pinned on the compression side? Then they wouldn't really need to be special either, and you'd get FOUR plugs per cylinder.
Side seals would be standard, but would the apex seals have to be special made...or could you use two of those side-by-side?
You would have to have either a monster bridge port or a peripheral port to feed the monster.
Renesis rotor housings probably wouldn't work. The side exhaust would be to restrictive for twice the volume.
You'd need to build a new oil pan, or use a remote sump. Simple. Special made compression bolts are also a cinch.
On a guess, you'd be adding about 15lbs per rotor (?). It could possibly end up being a 400Hp engine with an installed weight under 350lbs(?).
--
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