Thursday, April 10, 2014

Engines (back to basic)

Engines are constantly at the back of my head these days. To be able to run on Avgas UL91 seems to be a "must" judging by how things are developing. The ability to run on mogas becomes less important.

I have narrowed it down to VW engines. I have to mount the engine in the aircraft within a reasonable time. I have also included carb, double ignition, exhaust etc in the price. The list looks like this:

Name Type HP(max) RPM(max) cc kg Price € TBO [H] UL91 Mogas
Revmaster 2300 85 3200 2331 77 € 5 975 1 200 TBD 98*
Hummel 2400 85 3400 2387 76 € 5 380 0 Y 98*
AeroVee 2.1 80 3400 2180 73 € 5 372 0 Y 98*
Great Plains 2300 80 3600 2276 75 € 5 907 0 Y 98*
Sauer 2200 UL 85 3000 2234 66 € 10 506 1 600 Y 98
Sauer 2400 UL 100 3500 2332 75 € 11 442 1 600 Y 95


Revmaster
Pro: Overall excellent quality, TBO, HP, highly recommended by people I have contacted who are using it
Con: Will it run on UL91? That is being tested at this moment.

Hummel
Pro: Largest capacity (2387cc, almost 10% more than AeroVee), HP, UL91
Con: Rather unknown to me, and the website is almost void of info. TBO = 0

AeroVee
Pro: Supported by Sonex, easiest way to get flying, Prop, baffling and everything else fits 100%, UL91, the macho factor of flying around with an engine I have put together myself.
Con: Smallest capacity, HP? TBO = 0, the anxiety factor of flying around with an engine I have put together myself.

GP
Pro: Old and respected company, UL91
Con: Extremely High RPM, TBO = 0

Sauer
Pro: Overall the best engine, HP, Support, TBO, UL91, mogas
Con: Price, probably the most difficult to fit onto the airframe ?


The most desirable is Sauer. Then the Revmaster, more or less a less costly Sauer. I really hope it runs on Avgas UL91. The AeroVee is probably the engine that makes most sense to install, everything considered. The Hummel is the joker of the bunch.

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