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Diesel Electric drive works well for locomotives where it functions as a CVT and weight is good for adhesion. A drive shaft is 99+% efficient and a carbon one is light and about $1000; a hybrid electric drive would be less efficient, likely heavier and much more expensive.

Two things that show the limited thinking of that statement are supercharging and prop reduction gearing which have been used on aviation engines for about one hundred years. A ~500cc flat twin would make more sense than a big single with a balance shaft. A two stroke single with balance shaft...

A ~500cc flat twin would make more sense than a big single with a balance shaft.

Hi, a miracle has happened; we have a new newsletter editor. Watch our web site; <www.esoaring.com> We need more contributors.

Hi back in the 1970s I owned an Arup S2 replica (I did not build it.) I spoke to Milt Hatfield, one of the Arup's original pilots on the phone. Milt built an ultralight version with a simplified planform with straight edges. I think he called it "The Little Bird". If you search sport Aviation...

There is a FWF Aeromomentum engine for the RV12. It was at Oshkosh last year.

Super!

e-VTOL stuff belongs in a different thread.

Propeller not cable.

LIDAR is Laser based not radio so higher resolution.

https://newatlas.com/military/trijicon-ventus-handheld-wind-mapping/?utm_source=New+Atlas+Subscribers&utm_campaign=9241f962de-EMAIL_CAMPAIGN_2020_02_14_02_37&utm_medium=email&utm_term=0_65b67362bd-9241f962de-76688727 This could do it. Some years ago in Soaring magazine an Army Apache pilot...

60 degree V-6s do not need balance shafts; some 90 degree V-6 engines do make use of counter balance shafts.

There are flat Subarus flying in that power range. Porsches are too expensive to consider. A flat 4 has better inherent balance than an inline 4. The Suzuki G13BB is an excellent choice for a 100 hp conversion and gearboxes are available from at least two sources. Generalizations are not useful...

If you go to the end of the web site above there was an original plan set offered in April 2019;might still be there.

The family does not want plans disseminated. Best bet is to buy a project. If you have an actual aircraft, documentation is available. You can get one for less than than material costs would be today.

Hi, http://cherokeesailplanes.blogspot.com/2009/11/cherokee-ii-roll-call.html I would contact first. Try EBay. I'll check with VSA"s plans person. Woodstock plans ar on line.

Hi, what kind of crank/rod setup are you using? oil system?

Unlimiteds are now a warbird only class.

Regs: 1000 cu. in. total.