OK,

So it seems I am totally hooked on this plane, and I would like to buy it. Problem is, the only engine I have is a 40FX, which is extremely oversized. The Extra is a fast plane, and I worry that the 40FX would make it really heavy that it lands difficult.

Question is; would a 40FX work with a Model Tech Extra 300 ARF ?

CS - I believe that the 32FX will rev higher than the 40FX making the plane even faster as the engine is lighter. You will have a problem with the 40, its about 4-5 oz heavier on the nose and this will not make it nice to fly as you might have to add weight to the tail. All that means higher wing loading. Why not try a 'dry fit' of the engine and see the balance. I think you are better off with the 32FX.

Well, in that case, I am not going to buy that plane.

I'm gonna find an alternative

Only good plane i can think for the 40FX is the Magic with a mousse can. Something like that sort of plane, light wing loading and more than enough power for fun.

No matter how soft you land this plane, the landing gear is bouncy. Its like dribbling a basketball on the landing roll. A 36 already causes flutter on full throttle.

I had a Great Planes Super Sportster built from a kit with a 40fx. Absolutely wonderful plane. Flies fast if you want and slow when you need. The ARF that is now available is almost identical in most respects to the kit.

what wrong with a 40 fx ive got a super tiger .52 on a model tech a bit quick at some time but great to fly

I had the ModelTech Extra with a MDS 38 on it, and it was fantastic. A 40FX will be overkill if you can fit it in, but...........have a ball.[8D]

I have two MT Extra300s. The one with an OS.25FX still flys great. Even threw it in the trunk and took it along on my vacation to Minn/Wis last June. Should have seen it buzzing Lake Superior.
The other Extra is another story. I put a .40 in it and had around 10 flights with it. It balanced out using the baterry and RX toward the rear. No extra weight. Very fast !!! Bad part is that even after extensive glassing and added support , the .40's vibration habits took their toll. Had flown a couple of hours with this bird one Saturday,,, no problems. Until the vibes caused the RX/Batt tray to drop down onto the single aileron servo mounted on the wing ,, keeping it from moving. And when I did get it to make the turn it stayed there all the way to the dirt.
Get a 40 sized profile and have some fun with your FX.

I have been flying the MT 300 w/OS 52 surpass which is heavier than 40fx for about 4 years.
A little firewall reinforcement and 1.75oz of lead inside fuse near tail. No glassing of wings or anything special. This plane is so fun I cant descibe it! It will perform any trick in the book!
Best 89 bucks you will ever spend

I'm flying the little 300 with an O.S. .32SX. It lands pretty hot as it is. Add a heavier engine and tail weight for balance, and be ready for some really fast landings.

That's my feeling too. I think a .32 is nearly perfect for this plane.

After a ton of time flying this model I can assure you that it lands as good as my world cap 232. It is surprisingly stable and will not drop a wing or unexpectedly loose lift on approach. If you can land any aerobatic taildragger you can land this plane with confidence.

how about the model tech Magic Extra then?

I second this motion. I rate this plane and my Twist as the best bargains I've found so far.

I am condidering this plane with a OS .40 LA Any thoughts? I think that the .40LA is pathetic for a .40 but reasonable on smaller planes. I had it on a Thuder Tiger Lazy Tiger p-51 and it worked well. That plane is dead now. RIP.

My other question is how much room is required? I have a small field in my front yard that I fly off of. I live in the boonies and love it!

yee-ha, I did some checking and .40LA weighs the same as the .32SX. I tried a 10" prop with the stock landing gear. I found a less than perfect 3 point landing or any bounce at all resulted in a 9'' prop. With a 9" prop on that LA, it should work fine. I don't know if the supplied motor mount will work with your LA though. For landing, as mentioned earlier, you have to leave the throttle cracked and fly this plane in. My friend found just how unforgiving it is on his final turn with a dead stick. It just quit flying and dropped straight down. It will take a bit more runway than a floater like a trainer.

That's odd. I've been running a 10x5 with my Webra .32. No ground contact unless I really mess up.

The LA 40 will be a sweet combo with this plane. So would the .36. I am not pleading my case for the engine combo I run. I am recomending this model. I just happen to like 4-srokes and think my combo works fo MY style of flying, and it sounds *****in too.

As far as the landing part goes, I guess everyones perception of a "HOT" landing is a little different. It does like a 2 wheel landing, and therefore will require a fair amount of runway.

I will say, things happen very quickly with this little hot rod and you should be proficiant with
a low wing aerobatic model w/high rates prior to attemting this plane.

Chuck, thinking back to when I tried the APC 10x5, the dry lake (smooth) was flooded, so I went up to the old abandoned military airstrip at Manzanar. This is cracked asphalt with chuckholes. I think the little wheels probably dropped down in a crack or hole and chewed my props down. I went through two before giving it up. Plus my landing gear might be splayed out a bit from some not so perfect landings (belly flops).

WHAT KIND OF HOLES? Oh, I also just remembered that I threw out the stock wheels and the silly screws that were supposed to hold them on. The threads wore out the hubs of the wheels in about 30 flights. I think it's got 2" wheels now and I used bolt on axles. Tracks much better now that the wheels don't wobble. When the gear gets splayed, bend it back.

I've got an OS 25 FSR in mine - balanced without any additional weight. Goes vertical (slowly) with a 9/4 prop. The plane is very very fast. I cannot imagine this plane with extra weight and more power. You're more of a man than I am if you try this combo. One word of advice. Re-glue the firewall. Mine came loose after 3 flights. Good thing it's dovetailed.

I started with an OS 25F ABC, a slightly more powerful version of your 25 FSR. It did pretty well, but I wanted more. Balance with the .32 Webra that's in it now was basically the same, but the overall speed is even faster. I've got a 10x5 on it to try to keep it slower. I was playing with the climbs today and found that vertical is essentially unlimited.

I've got this plane with a GMS .32 on it and running an 11-6 it pulls unlimited vertical very well. Put taller wheels on for grass a the long prop and it lands vey wall. Slows down to a very managable speed. Not hot landing at all. A real blast to fly - really should pick one up for a spare.
Jim