Subject: 20b weight vs: performance...
From: Rotary Engine
Date: 9/6/2006, 12:01 PM
To: AA-me


Paul

There is a good looking 20b on Ebay.  I am wanting more power for my
Cozy but I'm concerned about the weight of a 20b.  Can a 20b come in at
less weight than a Lycoming IO540?  What weight could I expect with a
turbo version of the 20b?  I already have a CCI engine mount for a
Renesis.  My goal is to have at least 250hp for take-off.  And above 200
cruise.  My altitude in Utah is 4400 ft.

Rick Irwin


A little less as the 20B is about 260 pounds bare. Add
45 pounds for the PSRU and some for the cooling, exhaust and
intake systems.


 >     Engine       Horsepower   Weight   Ratio
 >     O-200-A           100      190     0.53
 >     O-200-B           100      190     0.53
 >     O-300-A           145      268     0.54
 >     O-300-E           145      268     0.54
 >     IO-346            165      297     0.56
 >     IO-360-B          210      327     0.64
 >     TSIO-360-A        210      334     0.63
 >     O-470-J           225      381     0.59
 >     O-470-R           230      438     0.53
 >     O-470-13          225      414     0.54
 >     O-470-15          190      405     0.47
 >     IO-470-C          250      432     0.58
 >     IO-470-D          260      426     0.61
 >     IO-470-E          260      461     0.56
 >     IO-470-F          260      464     0.56
 >     IO-470-V          260      472     0.55
 >     TSIO-470-D        260      511     0.51
 >     IO-520-L          285      466     0.61
 >     O-200-A           100      190     0.53
 >     O-200-B           100      220     0.45
 >     O-300-A           145      268     0.54
 >     O-300-E           145      268     0.54
 >     IO-346            165      297     0.56
 >     IO-360-B          210      327     0.64
 >     TSIO-360-A        210      334     0.63
 >     O-470-J           225      381     0.59
 >     O-470-R           230      438     0.53
 >     O-470-13          225      414     0.54
 >     O-470-15          190      405     0.47
 >     IO-470-C          250      432     0.58
 >     IO-470-D          260      426     0.61
 >     IO-470-E          260      461     0.56
 >     IO-470-F          260      464     0.56
 >     IO-470-V          260      472     0.55
 >     TSIO-470-D        260      511     0.51
 >     IO-520-L          285      466     0.61
 >
 >                     Lycoming
 >
 >     O-235-C1B           115      240     0.48
 >     O-290-D2C           140      263     0.53
 >     O-320-A2B           150      272     0.55
 >     O-320-A2C           150      271     0.55
 >     O-320-B2C           160      277     0.58
 >     O-320-D2A           160      277     0.58
 >     O-320-E2A           160      277     0.58
 >     IO-320-B1A          160      285     0.56
 >     IO-320-C1A          160      294     0.54
 >     IO-320-E2A          150      280     0.54
 >     O-360-A1D           180      284     0.63
 >     O-360-A3A           180      285     0.63
 >     IO-360-A1A          200      320     0.63
 >     IO-360-B1B          180      295     0.61
 >     IMO-360-B1B         225      274     0.82
 >     GO-480-B1D          270      432     0.63
 >     GO-480-G1D6         295      437     0.68
 >     IGO-480-A1B6        295      469     0.63
 >     IGSO-480-A1F6       340      498     0.68
 >     O-540-A1A5          250      396     0.63
 >     O-540-B2B5          235      395     0.59
 >     O-540-B4B5          235      395     0.59
 >     O-540-B4B5          260      398     0.65
 >     IO-540-A1A5         290      437     0.66
 >     IO-540-C4B5         250      402     0.62
 >     IO-540-D4A5         260      402     0.65
 >     IO-540-E1A5         290      437     0.66
 >     IO-540-G1A5         290      443     0.65
 >     IO-540-J4A5         250      409     0.61
 >     IO-540-K1A5         300      470     0.64
 >     AEIO-540-L1B5D      300      476     0.63
 >     IGO-540-B1C         350      500     0.70
 >     IGSO-540-A1D        380      530     0.72
 >     IGSO-540-B1A        380      532     0.71
 >     TIO-540-A1A         310      535     0.58
 >     TIO-541-E1A6        380      632     0.60
 >     TIOGO-541-A1A       400      663     0.60
 >     IO-720-A1A          400      597     0.67
 >


Paul Lamar ...No rotor no motor.



Paul

Thanks so much

I appreciate these charts.  Do you have a similar chart for rotaries?
13b in configs and 20b turbo, non turbo etc?  I know there are many
variables  but are there at least some ball park estimates available?

Rick Irwin


All Mazda 2R rotaries are pretty much the same weight. Only minor
differences. Plus minus ten pounds.

Paul Lamar ...No rotor no motor.

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