"Robinson, Chad" wrote:
Pardon me, I'm a lurker here, and I haven't found a CONSISTENT answer to
this question by just listening or searching the archives. What does the
current weight breakdown for a 13B turbo look like? I know the raw engine
weight, but not for the turbo (can't seem to find that online), and for all
the mods people have made since the Rotary Aviation FAQ that contains a
weight breakdown was last updated.
Specifically:
1. Are the two evaporator cores still accurate, and cooling
effectively for everybody?
Some say yes and some say no :) IMHO they are marginal. One rad would be
less plumbing.
2. How much do you expect the new bell housing to reduce the weight?
At this point in time we hope to make the overall weight including the
motor
mount brackets the same while improving the cosmetics.
3. I've seen a variety of discussions on the intake, but it looks like
nobody has settled on a "One True Way" here yet. Is that the case?
That is still not cast in concrete. Your side port HP can vary depending
on street porting
and intake manifold design +/- 12 percent around 175 HP. Many people have
bought
intake manifold castings so we should start getting more data in the near
future.
Here are some pictures of Bill Schertz's installation. We still have
castings
left out of this batch. No tubing bends are left however.
If you want to go peripheral porting you could get up to 240 HP at 6000
RPM.
Power Sport was claiming 215 HP from their peripheral port engine at 6000
and Allan Tolle
who has hundreds of hours behind a peripheral port rotary tells me it
is entirely satisfactory in every way. He went 238 MPH in the Sun 100 race
and had the fastest all time record in the time to climb to 3000 feet
years ago. (using NOX in the time to climb event.)
Also a 2.85 gear box over a 2.17 gear box will add as much as 20% to you
HP numbers
depending on how well the engine is ported and by running the engine up to
8000 RPM for
takeoff and climb. Ian reports around 200 HP with his side port & 2.85
gear box and he must
have close to 300 hours so far. Ian, how many hours now?
Paul Lamar
I have 210 hrs now, still going strong. I recently dropped the vaccum pump
speed from 1/2 engine speed to about 0.3 . The Lyc. vac. pump is driven from
the camshaft and geared up by 20%.
Ian
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