Hi All,

I wanted to post some information about my Extreme Flight RC Extra 300-E. I was looking for a plane that I could fly in a park close to work, and did not require a special trip to the R/C field. I already have the EF Mini-3D with GMS .32 and love the combination, and felt that the Extra 300-E would be a perfect compliment to the fleet, and offer "precision" capability in a smaller flying package. I ordered the kit a long time ago and was just able to finish and fly this weekend. Here are the specs:
1. Extra 300-E converted to GMS .32 with std muffler and OS muffler extension
2. Servos: 3110 on throttle, 3101 and 3102's on wings, rudder, elevator: (required enlarging the bays)
3. Elevator and Rudder servo mounted in the tail to allow for proper CG
4. Receiver: Futaba standard 8 channel FM (full size)
5. Battery: 2C Lipo, 700'ish in capacity
6. MPI switch with built in regulator
7. Dubro 6.0 oz tank
8. Total wieght RTF was 45 oz
9. CG was on the forward edge of recommendation. Allowed for very nice precision flight, but a tad too forward for easy 3D.
10. Canopy: I used one additional screw in the aft section of the canopy to ensure it would stay on (see pics).
11. Stab: Noting past stab problems, I installed a small carbon tube just below the stab and simply glued it onto the bottom of the stab for stability (see pics).
12. Mixes: 4%'sh up elevator to rudder each side, and 5%'ish opposite aileron to rudder. Still trying, but plane requires very little mix out of the box.
13. Engine mount: Very simple. Used simple plastice mount. Cut-off original engine box by "eyeing" it up and simply inserted new firewall. Again, very easy.
14. Work? I did not do a very "elegant" job as this is just going to be fun/lunch model for me. I have other planes I spend a lot of time making look pretty, so please forgive the crudeness.

Flying: I flew the first 4 flights yesterday and I was VERY impressed with the feel of the plane. Like many others have posted, it flies and handles like a bigger plane. Takeoff and landings were very easy. Even at 45 oz the landings floated in, and did not "drop" like some of the smaller E-models. The GMS .32 offers BLISTERING vertical performance with crazy-fast continuos rolls going up. Its an ABC motor and does require some break in. I ran 3 tanks at the house before trusting to fly - no deadsticks on first day! I let another friend fly it too and he loved the little plane. Given I'm breaking in the little motor, I did not try too much 3D but could tell that it was a tad nose heavy. However, rolls and rolling-circles were no problem for the plane. With this CG on knife edge passes I was able to hold high-alpha and climb, but did not try a knife-edge loop yet. We had 5 guys at the field and everyone thought the plane looked VERY good in the air.

Future plans?
1. Plan to add 45 degree supports from stab to rudder.
2. Trim for IMAC sequence practice at lunch!!!!!

I'll post more after more flying. The GMS look right at home in the engine bay. I'd love to do this same conversion some day on their YAK as it is getting rave-reviews too.
Thanks,
Jim W.

Pic 1

uploading pics is slow...

Good stuff! I'm working on a similar setup right now... using an O.S. .32 SX though. Curious, what prop are you running? And do you have any more pics of your throttle servo mount location, etc.? I've got a fairly good idea of what I want to do (to keep the CG decent), however, it's always nice to see others setups.

HI Adam,

I'll ge another photo of the throttle later. I glued a little servo to the side of the plane and used a 1/16" steel wire. Not the lightest but effective. I used the APC 11x3 on the Mini-3D GMS .32 combo, and the APC 11x4 on the E300-G GMS .32 combo. These little .32's really sing with these props!
Thanks,
Jim

Awesome! Thanks for the info.

Jim - I think you are nuts! Hahahaa ... now after you have flown the 300G you need to fly the 300E and let us know the difference, then its even more fun. I noticed the extra weight is quite a lot.