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STOL CH 750 on amphibious floats
Still need to do hydraulics and electrics, then a new W&B with configuration change prior to flight test.
Comment
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Comment by Alexander Ehrnrooth on September 1, 2020 at 11:46am
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I am currently flying someone else’s Super Cub on floats, which isn’t much faster than the CH750. I’m only flying for fun and looking for a plane fairly economical to operate and build (ie. brand new) so the 750 seemed to fit the bill. It’s a compromise like pretty much all floatplanes.
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Comment by David J. Beaulieu on September 1, 2020 at 8:32am
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Dragging floats around you can plan on about 65-70 knots max at around 5-6 gals an hour fuel burn. Overall, the 750 is not a very practical utility floatplane IMHO. Fun? Yes, but you'll be going camping by yourself with very, very minimal gear. Water/wind conditions that are outside operational considerations for the 750 but allow for Cessna 180 and 185 operations will be common. If not too late in your project, consider the 750SD with a bigger engine. It will be a much more useful floatplane than the 750.
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Well currently I have the ULP 350is in mind. Installation seems simple enough. Maintenance too. There are nice interactive manuals. I have also looked at Viking 130 and Aeromomentum AM15HP. Earlier I also considered the O-320 but despite the power it’s waaaayy too heavy. The UL is definitely the lightest of these. What cruise speed do you get and what is the fuel flow? I have thought about installing a constant speed prop.
Choosing an engine is certainly not made easier when there are these oldschool guys more or less yelling ”get an O-320” or ”get a Rotax this or that” at you... ;)
Btw I’m at the beginning of the build, tail done....
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ULPower 350iS which gets me about 124 hp with the Catto prop I have on. Straight floats are the way to go regarding reduction in weight and increasing your performance. It is a single person aircraft with full tanks and some gear while I have the amphibs on. Losing the wheels by going straight will save you at least 100 lbs. What do you plan on installing for an engine
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Hi
I am building a CH750 that will eventually go on straight floats. What engine do you have?
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