RC Planes

Getting back into this out of the blue. Just ordered me one of these, starts 20secs in:


Sbach 342 EPP 3D Airplane 900mm

About $50, but $100 by the time I've ordered 4 new smaller batteries, propellers and paid for shipping. Always more than I think it'll be. Didn't go for a new ESC as I've got two - a 30amp ESC already and a 90amp (overkill one for previous plane). I am guessing cos of the weight the 30amp ESC is the one to use.

Probably should've started with this from the off. Went for a big FPV one but didn't have the funds to get to the FPV stuff, and ended up stacking it after only a few weeks and didn't get back into it.

Thankfully also there is a UK warehouse with HobbyKing, so it shouldn't take two months to arrive this time. :p

Anybody still doing this? At least the weather is back to flying weather now. :cool:
 
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Yeah, it'll be a steep learning curve I expect. I didn't get an awful lot of experience in the other one either before I stacked it.

Annoyingly I've lost the charging cables and possibly the PSU for my charger, so I might have to see if I can hack another one to work. Also, I don't expect to have the right cables for the batteries to match the plane.

Can you get these types of cables from regular hobby stores, or are they particular to HobbyKing?
 
I've got some 3s batteries coming along, not sure what connector they are. I currently have a mix of XT60's and Dean connectors, so should actually be OK after all. I was setting up my current plane over the weekend and it took me a while to get back into the wiring again, I just had a bag of bits that I couldn't remember what to use for.

A few terminal blocks later and some hot glue, I've sorted it out. I've also managed to wire up an old HP server PSU that is capable of putting out 32amps at 12v, so I've got that powering my charger. I can only charge it at 4.4~ amps for some reason though, perhaps because the charger is not capable of putting out more. I did try and charge two 3S batteries as a 6S, but obviously what I thought was a combining balance adaptor was something else, as it sparked when I went to make a connection.

Anyway, managed to totally demolish my plane on Friday. Same issue as last time, not balanced properly - this time probably because I had to glue it together so it was impossible to setup properly - and took a good 18" off the wing. And the structure where the fuselage meets the wing has been totally destroyed. Time to throw that in the bin. :(

Thankfully new one should be here today to keep me occupied. I'll take more care over setting it up this time, I think. Will also try and find my Key Ring camera and stick it on to get some aerial shots.
 
Well I got the new one, and here's a couple of pictures in case anyone is watching.

Running a Turnigy 1400kv motor, 8x4 prop with a 1000mah (2200mah shown) battery. I've just been testing it with my watt-meter and it runs at about 330watts when the battery is fully charged. :eek: Didn't expect that much grunt! Just by holding it upright and pushing the throttle up it can easily hold itself in the air from about half throttle. Wondering how it'll be balanced though with a 2200mah battery up front as I can't see any Centre of Gravity markers on the wings.

Also managed to setup my controller so that I have switches for exponential on the throttle, rudder, ailerons and elevators. I'm not sure how much to go with on that front but will get rid of most of the input to keep it safe and then see how it flies.

Gonna give it a go tonight but it is a little blustery so no doubt I'll come back with a bag of foam bits.

sbach1a.jpg

sbach2.jpg


From that second photo you can see that I stacked it yesterday and the carbon fibre rods already need setting back in with glue. :o The battery has been made to fit by heating up a screwdriver with a creme-brulee blow torch (classy) and then just cutting out the foam when it's red hot. Came out nicely. The fumes that come off that foam though... had a lungful by mistake, not good. :eek:
 
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Ordered a new motor for a laugh and ended up with quite a potent setup. 1250kv motor with a 12x6 APC prop and it pushes out 925 watts of power. Bit mad. Also quite frightening as it's extremely noisy. Just need to buy a plane that's big enough for it to go in. :p

 
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