Tech One Swift

Tech One Swift
Tech One Swift

Monday, August 23, 2010

Slow Week

Not much happening the last week. Only flew a couple times with temperatures well over 100 at 8:00 in the evening. Built a couple new jets this week. One looks similar to the F-15 and another has it own look. Both were rigged with Turnigy 2836 motor w/2350kv (6X4 prop). Matched with a 60 amp Vocano ESC and 4S30C 2200mah BlueLipo battery. Maiden flights were trouble free.

On another note, I have ordered new larger metal gear servos for the MegaJet II. Had insufficient torque on previous servos to perform any stunts other than a few slow rolls. Also going to go to a smaller prop(9x6) with more pitch to increase speed. Hoping to get something near 60 mph in the future.

Sunday, August 15, 2010

MegaJet II a Success

Well I finally completed and maiden the MegaJet II this past weekend. It was rigged out just like the original MegaJet. I used a HobbyPartz Monster 15 motor (950KV), 60 amp Volcano ESC, 2200 mah 4S BlueLipo with a 10X3.8 prop. While it had enough thrust for verticle take offs, it could use some additional speed. Planning on dropping down to a 9 inch prop with a 5 or 6 pitch for the next launch. It currently pulls just short of 40 amps on the 10" prop giving it an output of 550 watts. That is just 2 amps short of the rated maximum for this motor.

Kept the first 5 flights mainly level with the occasional roll. Jet has plenty of up and down using the current elevon configuration but lacks a little in the roll department. Next build I will either seperate the functions or possibly add ailerons onto the existing servos.

Bad weather on Sunday left it and it's smaller counterparts in the hangar. You can see maiden in the attached 5 minute video.

Monday, August 9, 2010

MegaJet Flies and Dies

Well I finally flew the MegaJet F-22 last weekend. It was a F-22 that I enlarged by 40% which gave it a 38" wingspan and total length of 50". I outfitted it with a HobbyPartz Monster 15 motor, 60 amp ESC, 4S2200mah battery and a 10X4 prop. Full throttle produced approximately 550 watts. I hand launched and flew it several times before an elevon pushrod failure (Note to Bruce, use Z-bends on big jets). The attached video is of that short final flight. Not to worry, I have already built the MegaJet II and it now max's out at 40" wingspan and a total length of 58".

Sunday, August 1, 2010

Hotter than 40amp motor pulling 60amp

Well not much flying going on with 100 degree heat. We have been trying out the newer Helicopter Turnigy 450 size H2218 series motor lately. So far the motor seems to be a winner. Motor comes with nothing but an x-mount but at less tham $11 that leaves you with $6 to put on connectors and a prop adapter and cost the same as the 2836-2350KV motors. Not that you can get any of them for the last month. The 1860-2900KV motors are well suited for parkjet foamies. The only hold back is the shaft cannot be reversed which limits your mounting options. Using 11.1v batteries the prop maximum diameter seem to fall as follows: 1860=8", 2100=7", 2500=6", and 2900=5" not to exceed a 5 blade pitch. Bump it up to 14.8v and you might have to come down an inch in diameter but it really screams and you fall right at the rated 500 watt maximum.