Thanks guys, Yeah I was quite pleased with how easy it could fire up and run, no nasty kickback tendencies like the engines of the old days did. That does help make it easier to run the engine. It does develop some impressive power too. The engine vibration doesn't appear to be all that bad either, I have a Enya R1.20 I rebuilt and it almost tore the engine test stand apart at first. But the Evo 58 engine is a lot more smooth running than I expected.

Here are some pics I took test running the Evolution 58cc gas engine using the CH-Ignitions conversion setup on it. It actually ran pretty good like that. No nasty tendencies like kicking back on me either. I didn't see any difference in performance versus the old Valach Ignition module.

Of course that in cowl muffler even though it is large does not do much to quiet the engine down any. I measured 102DB using my iPhone DBmeter app.

You will love the engine Earl. Take care that the front seal gets enough oil. A drop or two once in a while takes care of that.

Earl, here is my P47 powered with one of those (MVVS58) at an event I attended last weekend
Look at the prop size as compared to the plane. 3-blade Xoar 24x10 and just a standard "Evolution" Pitts muffler. No lack of power to handle that prop

Hi Ari,
Over weight, over powered, and over there? (down under!)
Way to go!

Pretty much Pe!

You may recall our discussions about this plane a while back. I initially set it up for air racing in a category limited to 62cc where the exhaust had to be contained within the cowling (read: no tuned pipes or other fancy exhausts) and noise level was also limited (read: no open exhausts)
The engine is a stock standard 58 IRS whereas Earl's engine will be the same as the Prosport (I assume)
The plane weighs approx. 10.5Kg and goes extremely well with this combination. A lot of side torque on takeoff due to the heavy propping but like most, the plane has a rudder

I am in the process of fitting another identical one into a scale 104" TL-2000 (a Czech Ultralight) that I bought a few weeks ago.

Sorry to hijack your thread Earl. Back over to you

Nice plane, I do like the P47's a lot.  yeah I am planning to put my engine in a Great Planes Giant Aeromaster, so it'll likely be overpowered too. But it seems everyone except the original author of a magazine review were using 50cc engines or better in the plane. But the engine does have a pretty nice carb and throttle response too. I don't have to fly around at full throttle.



Thanks Pe, I think the engine is running great and I am going to like it a lot.