Manufacture aircraft kit parts as a retirement side hustle.

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KeithO

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That is because Zoche and other projects like it exist to absorb development money and nothing else.

It would be fun for a day or a week, until the realities start sinking in. Those realities are what have kept new engines from appearing regularly, and not appearing affordably at all.

How many here remember the Zoche diesels? From Wiki:

The testing and gestation period of the Zoche engines has already lasted over 25 years; and whether or when production may eventually start is unknown. However, in 2019, Georg Zoche posted this message online: "Don't worry and remain patient; we are working on it".

Zoche aero-diesel - Wikipedia

Nobody is holding their breath anymore. Most don't think it will ever be available.
 
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Martti Mattila

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Feb 24, 2021
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One customers Avid F. had first gen. Jabiru 2200 and someone had made a bafflings the same way like VWs. When you looked down from heads theres no air passage and cooling fins from above to down to do the job at all. So air should flow vertical to do the job. That is the way that those glasfiber srouds are made in J. factory. Maybe bad Jabirus in Europa is derivated from this. They are baffled like VW s.
 

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cluttonfred

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That is because Zoche and other projects like it exist to absorb development money and nothing else.

When it comes to new engine development, even if experimental only, the market just isn't there to justify the expense at the low end of the power range. As much as I'd love to see something like a small, four-cylinder, air-cooled inline hit the market, it's hard to imagine that happening.
 

Vigilant1

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When it comes to new engine development, even if experimental only, the market just isn't there to justify the expense at the low end of the power range. As much as I'd love to see something like a small, four-cylinder, air-cooled inline hit the market, it's hard to imagine that happening.
True, for a clean sheet new engine. The aero market is just too small. Depending on how electric cars and the charging infrastructure develops, it is possible we'll get a crop of small range extender IC engines that could be adapted and useful in aircraft.

Back to the OP: For the right person, building ready-to-install 32-80 HP aero VW-based engines from the readily available new parts is a proven business opportunity. No new trails need to be blazed, but there's lots of existing knowledge to learn and use.

If desired, there are also ways to offer something different in the ready-built VW aero engine world (HVX modifications done, low cost EFI/EI, hand-start flywheel side prop with magneto, etc).

Would this be a good side hussle for a retiree? Maybe. If built up and nurtured, and with the luck of a steady or growing aircraft market, maybe it could also support a young family for a few decades.
 
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Victor Bravo

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Jul 30, 2014
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KWHP, Los Angeles CA, USA
something like a small, four-cylinder, air-cooled inline hit the market, it's hard to imagine that happening.

Four of the single cylinder Briggs or other high-volume industrial engines joined together inline, with the requisite engineering done on connecting the crankshafts, might allow someone to accomplish this faster than a clean-sheet start.
 

WonderousMountain

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Apr 10, 2010
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Bellingham, Wa
The most intimidating right now is a Reverse Johnson bar, where the flaps deploy on downward pull motion the lower set are slave strut rigged. Ideally they would quick-latch when the wings are fastened on (no fold). Stabilizer also has winglets in need of 90° adjuster, from vertical to flat plane.
 

KeithO

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Nov 29, 2009
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651
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Jackson, MI
I think better materials would be needed to make it durable. also the VW head heat dissipation was already marginal before it was cut down so now would be worse. But it makes a nice proof of concept....
 
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