Barry,

A bit more detail for you. I'm at roughly 600 feet. hen I first flew it with the Fuji I had an MSC 20X8 and could not get any vertical above 200 feet. Changing the prop to the PT Cf prop made a huge difference in both getting the engine into it's powerband as well as overall performance. I was not a rocket going vertical but it would finally top out somehwere around 1000 feet (I'm guess at this but I know I'm close) I never really did get to hover it but I think it would have done it but with a slow but steady pullout. The engine only has about 1/2 gallon through it so it's not making it's best power yet. I actually did consider that very same 45 but I had this DA just begging for a homeand I did not want to buy another plane (I already have 2 more 50cc's on boxes with MVVS58's for them)

I would say if you can really keep it at 13.5 lbs you might be in for a bit of a treat. I have heard thise 45's a plenty powerful if you prop it right but that's all I know.

According to the Evo manual, it makes it's max HP at 6200 rpm so if Pe (MVVS) sees that with a 24x10 on a canister, then a 23x8 or 23x10 Mezjlik or PT Models prop (same props but the PT is about 5 bucks cheaper and you can get them at Troy BUilt Models) on a pitts muffler might just get you there. Again, I'm guessing

Here is the info from the MVVS web site:

This engine has a magnesium crankcase and redesigned bearing group..
Bore 38mm, stroke 38mm (43cc / 2.60 cu")
weight : 1400 grams (without ignition, but with plug)
Ignition weight: 165 grams
Fuel petrol, unleaded 95 octane (US: unleaded premium gas 91 pump octane).
oil Mobil 1 2T or equivalent, Mix at 1:40 (running in 1:30, during the first few gallons)
Manual download
Engine drawing


Factory field test figures, with Mejzlik props and 3204 canister muffler
24x10@6200 rpm
22x10(three blade)@5900 rpm
Lots of gusto! This will be the benchmark for the competition.


And from the Evolution manual

45GX
Two-blade propellers:
22x10, 22x12, 22x14
23x8, 23x10, 23x12
24x8, 24x10, 24x12
Three-blade propellers:
21x10, 21x12
22x8, 22x10

Both make 5.2 HP at 6200 on the canister and the fuji is around 4.5 on it's stock muffler and the Fuji is 4.2 pounds with everything but the battery