Espritmodel.com Telemetry Radio
bmiller's blog
Archive for June, 2012
Posted by bmiller | Jun 10, 2012 @ 05:37 AM | 3,562 Views
Picked it up at the field today from Hung (Zascarkid) for $150 and I had got the retracts for it from Herb last week for $40 so I saved over $100 bucks. Already have an original jetfan90 and a 6S motor.
I held the wing halves together and tried to fit it in the HHR, TOO BIG!
I'll have to remove the wing for transport which is a pain in the ass.
Anyway its pretty and big, should come out extremely light for it's size making it a floater. I don't expect it to be a fast jet because of the huge size but it should be a fun agile flyer.
Heres the thread on it http://www.rcgroups.com/forums/showthread.php?t=1124911
Posted by bmiller | Jun 06, 2012 @ 12:34 AM | 3,363 Views
Dusted off my little A-4, I had parked it after the aileron trim kept changing inflight. Other jets had my interest so it never got looked into. So it's been 2 years, time to fix it!
Pulled the intake duct and fan out tonite. Good thing I parked it!
The aileron servo had unglued itself and was flopping around, the fan stator assy had broken free and slid forward with the rotor protruding into the duct, the outer fan mounting ring also broken free and the main bulkhead was broken in half.
Guess thats the price you have to pay for having 900watts in an alfa A-4!
Epoxied the servo down and CA'd the fan back together adding epoxy around the stators and outer mounting ring. Bulkhead also CA'd plus epoxy to reinforce the cracked area and some extra on the fuse/ bulkhead joints as well. Reassembled, need to get a 2.4 rx for it or I'll have to use my old optic6.

Mods: cutdown het rotor in the alfa shroud stator/motor assy moved back so rotor runs in the shroud. Mega 16/15/2 4600kv CC60A ESC on 4S2200s.
Smaller exhaust duct exit 57mm.
Foam shims added inside the inlets to shrink the too large intakes for higher top speed, Seemed faster but then the aileron issue started so I parked it.
I'm adding some red paint on the wings/tail to see it better inflight, the navy paint is tough to see and the jet is tiny and seriously fast. Maybe Herb can get a speed read on it saturday. I'm hoping somewhere around 145mph.
Posted by bmiller | Jun 04, 2012 @ 02:14 AM | 3,841 Views
Beautiful but Difficult to fly.