jaredstrees
Well-known member
Rocket knife is awesome!
Hey Guys,
Built my Arrow with Elmer's foam and it requires massive weight in the nose to balance at the CG. Is there any way to take weight off from behind the CG? For example, move the motor, etc forward by say 1/2" by cutting a deeper 'indent' slot between the elevons?
I would throw an XT30 on there if you are not planning on going to 3S. If you are then you might want to go XT60 since that is what most 3S batteries use. I had trouble fitting a 3S 1000mAh battery with XT60 in the Arrows I built though.Hi folks , started building my arrow about 2 weeks ago then set aside waiting for a motor and pushrods which arrived yesterday so finished it off and maidened it. Everything went really well the cg seems spot on with a 5g weight on the front. This is using ft water resistant foamboard , 2 9g servos , an emax 2204 with 12a esc , 6045 prop and 800mah 2s battery.i tried 6030 first it flew but was very lethargic. I decided to add tape after the build to help with rigidity and to be able to tell top from bottom. Its nothing fancy just black with red wing tips and red centre pod with the opposite on bottom. I got 4 batteries through her yesterday , got it home then noticed the poor jst connectors (esc end) had melted together. I plan on changing over to es3 as thats also what my 3s sport cub s2 uses. I'll probably stick a 20a esc on to test out 3s at some point but 2s was not slow by any means. Its too much fun dive bombing at full throttle and she has displayed no bad manners. She does fly as straight as an arrow. Just wondering what connector type you guys are running (2s) it seems crazy to supply a battery with a connector that is not capable of the amps it will run.
Forgot to add - she is my 4th flite test scratch build starting with mini sportster , mini speedster , mini mustang (flew very poor and did not withstand crashes well atall , stole wing and threw on top of a mini scout frame , tried once actually flew pretty well but ive since moved the wing forward. Okay thats 5 but the scout/mustang aka stout doesnt count. Cheers
I would throw an XT30 on there if you are not planning on going to 3S. If you are then you might want to go XT60 since that is what most 3S batteries use. I had trouble fitting a 3S 1000mAh battery with XT60 in the Arrows I built though.
HAHAHA!!! Be a noob and have your CG too far back! If you get it to stall and dive straight into the ground from 2 mistakes high you should have no problem getting it to rip in half:black_eyed: I've torn 2 in half now
I get the speed build kits from FT and it takes me about 1hr to 1 1/2hr to build and maiden providing I'm not peeling the paper/adding LED's etc....
I haven't built one from the plans yet but it seems like a lot of the guys that do make templates to help speed up the process. If you wanted a perfect start you could order one of the speed build kits for $15 and use it for templates instead of building it. Pin it down to your foam board and trace maybe? Like I said I have no scratch build experience so not sure if this would work but it seems easier than gluing sheets of paper down.......
My question is, how much interest do you all think there would be in something like this?
Thanksfor your reply , i did decide to try out 3s so changed over to ec3 connectors with a 20a esc and heavier wire. The batteries connectors are ec3 and ive changed the 2s over to this aswell. I put the reciever in left hatch and esc in the right which has left enough room for me to be able to squeeze my 1300 mah batteries in the centre pod. Ive still to fly it on this set up. I will be trying it out in the next hour if the wind stays calm but wont be able to put many 3s batteries through her as i will be re-maidening my sport cub s2 ( first time was in an area much too small so got scared and landed , rough)
The first flights I had with my Arrow had an underpowered motor. The plane flew, but slow and the motor got hot. Response to controls was slow and it took a lot of nose up input to keep it level. Since then, I installed a 2205 2300KV motor running 5x4.5x3 bull nose props on a 3S battery. This thing really tears around! The controls are very snappy now and it will climb vertically. It is super fun to fly. I think your problems with slow control response could be from slow flight speeds, mine definitely improved with a little more speed.
That is good to hear! Kind of what I was thinking.
This system primarily speeds the transfer of the plans to the blank foam board. The cutting seems a little faster due to better markings on the foam.
I am putting the finishing touches on this thing for the Mini Arrow, when I'm done I might need a volunteer or two to test it out. It would probably be good to get feedback before I put a bunch of work in something everyone else thinks is dumb or redundant.
frustration, broke my getting there setup mini arrow, build a new one saving 50g of weight (removing paper and using coloured packing tape on outside) broke that one on the 2nd flight.
Anyway, has anyone made the mini arrow as a whole wing instead of in 2 piecs. Im pretty sure my foamboard i big enough.
Im having issues with breaking the wing front to back. mine never folds bit instead breaks 1 wing. The first wing broke in line with the servo, straight trhough the wing spare. Almost clean in 2.
The 2nd wing broke just before the electroins pod from an inch infront of the leading edge right through to the back. Again not worth repairing.
it takes me 6 hours to build these.. to have it suddenly go nose down on me and hit the ground, the last crash wasnt even under power and only from about 15 feet onto soft grass.