ORIGINAL: F4U Corsair
The FS 70 may pull the DR1 scale since it has gobs of lift, but I elected to go with a Saito 91 (plenty of extra power). One of our members has one also with a Saito 82 installed and it flys it well also. You can never have too much power
. I angled my landing gear wing more than the bottom wing after the intial flight because the DR1 tended to baloon on me a bit. It settled down after making that change. Good luck, and post some photos of your DR1 and DVII when you get a chance. They are both sweet birds!
I agree. Your not kidding when you metioned that our GP Dr1 has "gobs of lift " and let me add, gobs of drag.
Bill, you do want to go with a bigger engine and I agree a .91 FS would be very good. My O.S. 91FX which is a 2-stroke is very powerful. But that's OK because not only I can swing a scale prop, (Camel Prop was 1" shorter than the Axial Propeller, and Jacobs liked the Clerget engine for its power) I get the wanted nose weight that I would get for having a bigger engine.
I just have to remember to cut the throttle back to 1/4-1/2 or she'll want to fly out of scale. It's just my opinion- the last owner of my Dr1 had the 1983 O.S.120FS (Before Surpass) in it (the engine I mention so often) and the engine was way too heavy for the stock landing gear. So far from what I read and from what others have told me that a 120 is way too big and heavy for the stock landing gear. I tend to agree. The stock landing gear that was on mine was bent and busted at the solder in 3 areas. I think I posted the picture on post #5?
F4U Corsair is very correct on engine size choices. With the GP Dr1 it's good to have power if we get in a jam, or botch a landing and need to get back in the air fast.
Pete