RCU Forums - View Single Post - Modeltech Extra 300 Arf
View Single Post
Old 02-16-2002 | 12:46 AM
  #4  
stevezero
Senior Member
My Feedback: (11)
 
Joined: Dec 2001
Posts: 819
Likes: 0
Received 0 Likes on 0 Posts
From: Greensboro, NC
Default extra 300

Troy

I have one that has been relegated to hangar queen status due to a flameout/stall on landing about 5 ft off the ground (ok, so i did an unplanned harrier landing with it. I broke the landing gear block out, along with one of the formers. Use nylon bolts on the gear, that way they shear off instead of the whole gear. I liked mine alot, very aerobatic, tumbling plane. I had an os 32sx w/macs pipe on it, turning an apc 11/3 or 11/4 prop, and it would have unlimited vertical at under half throttle. I used larger foamies on it to clear the prop, and bent the gear in. I never really got the hang of hovering it, because it is very hard due to the wing., and I was too busy flinging the sticks around at full throttle. The wing is very thin, so slow speed flight is iffy at best, dangerous at worst. DEFINATELY WRAP FIBERGLASS AROUND THE WING JOINT!!!. The wing will take all you can throw at it that way. I also braced my tail with 4/40 wire (needed the tail weight, so I went for something structural instead of lead). It will fly well inverted, but again, dont do it too slowly. Knifeedge is awesome with it, specially with alot of rudder throw, but there is roll coupling. It will also do a wicked high speed stall if youre not careful. The same qualities that give those bad tendencies will also make it one heck of a spinning/tumbling machine. It is capable of the most wicked cartwheels in its own fuse length at the top of a lomchevak.

As f16 stated, keep it as light as possible. Mine before impact was under 3lbs 8 oz. Before I put my battery pack in the tail, i needed 4 oz in the tail to balance. You might want to slice the turtledeck and sink a pack in there, to keep your weight down. You will need the weight if using anything over a 25.

I think there is still a pic of mine in the Show your ARFs thread. I dont have one on this pc, or I'd post it here.

Good Luck and let me know if you have any questions on the mods I made. I rebuilt mine the first time after knifedge spin/inverted spin/knifeedge spin that the motor flamed out on.

One last tip: MAKE SURE YOU HAVE ALOT OF ALTITUDE TO RECOVER WITH!!! It doesnt float out, you have to power and fly it out of spins if youre going to the extremes on throws.

Steve