I'm in the process of building a new fuselage for a Tutor II wing. I would like to stay with the 46 LA that was in it originally. What would be a good weight range for this engine? I'm getting close to finish sanding the fuselage, trying to decide if I can silkspan the fuse without it being overweight.
  I didn't stay with the original shape. I really like the jet look(especially the Avenger). Its bigger than a fighter, so I'm leaning towards a fighter/bomber. I'm afraid she is a tad bit overweight.
When I get a little farther along I might post pictures.This is the first rebuild that I've done from scratch.

Thanks
Steve

  I'm in the process of building a new fuselage for a Tutor II wing. I would like to stay with the 46 LA that was in it originally. What would be a good weight range for this engine? I'm getting close to finish sanding the fuselage, trying to decide if I can silkspan the fuse without it being overweight.
  I didn't stay with the original shape. I really like the jet look(especially the Avenger). Its bigger than a fighter, so I'm leaning towards a fighter/bomber. I'm afraid she is a tad bit overweight.
When I get a little farther along I might post pictures.This is the first rebuild that I've done from scratch.

Thanks
Steve

Silkspan on the fuse would not add any significant wieght, maybe 3 or 4 grams.

I had a Profile Cardinal that flew reasonably well at 50 oz. with the LA46. I don't think for competition I would go beyond that weight for this ship using the LA46. Fuse was covered with silkspan. On mine the weight was to much paint.

Here is a picture, I know the Lg is overkill, but trying to save my hobby $$ for the 3 skyrays .

Steve

I built a Scarinzi Blue Angel (630 sq in) many years ago that weighed 54 oz and flew very well.  It was flown competitively at 10 VSC's and passed on to my friend Burt Brokaw who did some repair work that pushed the weight up to a little over 56 oz.  It was flown at this years VSC (by Burt) and still flys very well.  Ed Capitinelli has flown a Starduster 40 (his design) at over 56 oz with an LA46 and it has no difficulty at all, and flys an excellent pattern.
I wouldn't hesitate to use one in a 57 oz 640 sq in airplane and all mentioned above were flow in Tucson at 2200 ft + altitude and 100 degree temps.
Prop in most cases is APC 11.5X4 at about 9600 RPM for launch.
Lots of power to spare.
Most of the engines were reworked for stunt by me but nothing radical was done to them.  Slight port reshaping (no timing changes), to direct charge to rear of cylinder.  They lose less fuel out the exhaust port that way and use slightly less fuel overall.  They probably do not develop any more power than stock but seem to be more tolerant of needle settings and perhaps give a slightly flatter torque curve in midrange.
They do run quite well however straight out of the box.

Randy Cuberly

Found a pair of glass filled LG in the shop the other day. I am going to compare their weight to the Alum Lg I have and use the lighter of the two.I still need to recover the wing, fuse is painted(gray w/ 2 tone brown "camo").Added the "camo' after looking at all that gray for 2 days. Also need to paint the canopy black. Will get a final weight early this week.

Steve

The moments are close, did enlarge(longer) the stab and elevator. Might swap to a tongue muffler,pretty sure I'd have to buy one for the LA46. Low mpg truck and $4.00 gas has really put the hurt on my hobby funds(I'm sure we're all in the same boat, no Rockerfella last names on here).
Airframe is painted and ready to cover, just need a couple of hours shop time to get it done.

Steve