Good day, marginally bad day, overall good day
First day with the Ice Fire II, new version.
All up weight 12.1 ounces.
7 gram servos all around, 300 mah 2 cell lipo and park bec for power.
About 10 nickels for nose weight due to the light battery.
Got about a 7 minute flight on about the 10th toss.
Unfortunately a few tosses later the stab came off due to stripping
the threads on the balsa stab mount.
Speared the ground, but other than a stripped aileron servo gear and a cracked boom, all is intact.
This is a giant step up from the venus. It was a breezy day but I still was able to cruise all over the field looking for lift.
Lighthawk hopefull shows up in July but till then this is great fun.
Repaired and got a few flights, but it broke again, boom in three places.
The boom is fragile.
I stripped the boom, and wrapped all the breaks with carbon tow, went back today and am slowly working up to full power throws.
The diagnosis is the following. After repairs it was a little tail heavy and had a few thousandths slop in the elevator pushrod. This resulted in a nose in from launch and a cartwheel.
The resulting fixes are to drill a correctly sized hole in the elevator servo arm and the elevator horn.
Net changes to the IFII are the following:
Servos in the wings, works out okay.
Subbed berkely fireline for the pull pull, this is ok.
Wrapped tailboom in carbon tow, this is apparently necessary.
This seems to be a pretty good advanced trainer for the money, but if you build one go ahead and wrap the boom in tow before assembly. Stock boom is light, but VERY fragile.
Already got about a 1:57 flight at 8:30 in the morning so something must be working right.
The increasingly reliable IFII is making a good sport glider. It remains to be seen how it stacks up against something high end. Will know in a month.
Tail feathers are fairly brittle and crease easy so I have a tiny repair to make. However the RAM3 says I'm getting 120 foot launches and I'm not up to full power yet on the throw.
Longest flight today was 8:05, four different thermals until I got bored and started looping and rolling to get down.
Hopefully my reports will benefit someone if they want to try the IFII. The cost is moderate and the fun/cost ratio is quite high after you beef up the tailboom. In retrospect one extra wrap of carbon before construction would have changed everything.
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