stallion_explosion

right perfect thanks guys i'm going to show that little **** who's boss when I get home

i think the inner part of the rear bearing may have stuck itself to the shaft when it failed to be honest then, if it's definitely a 5mm bearing it wants. I thought that was it when I first went to fix the thing but it was so impossible to budge with a screwdriver i decided it must be a part of the shaft and stopped trying to prize the thing off! So the collar there is definitely a bit of failed bearing that i need to force off somehow- and I can go for it without fear i'm going to be breaking the crankshaft yeah? It totally has a little groove in the middle, exactly as you would expect a piece of bearing to have.

i lost the clutch bearings in my picco p3 .28 when my bell got chewed up. The front bearing is 5mm diameter (5x12x4) but the shaft is wider for the rear bearing (you can see that it is shouldered on this exploded diagram) http://www.cmldistribution.co.uk/diagrams/Picco%20Engines/P3-28.pdf i got some 6x12x4 bearings thinking they would fit but they are still too small to fit over the shaft. I'm not sure that I can find 7x12x4 - not having much luck - and I'm not sure if that would definitely be the right size anyway. So yeah anyone now exactly which bearing I need for this?

ok so i've stripped the old tape hinges on the elevons and gone for a UHU POR glue hinge instead. It's tough to bend but very much more solid. I've also replaced my servos with bigger ones. This combined has shifted the CG forward a bit. I managed to get 1 battery in before the light went. Most of that was trimming so no definite conclusions yet but here's conditional first thoughts. It was MUCH more solid than recent flights have been. I'm hoping I've fixed the squirrely handling (hadn't mentioned that here) and possibly may have helped with the high speed control issues. I can't be sure of that because I didn't really get a shot at high speed runs, maybe i'll have a chance tomorrow, but if it has fixed it then it would point to the problems being caused by my degrading old tape hinges My current theory - the tape hinges were losing integrity.. Possibly the force exerted by the elevons at high speed could have been pushing the tape out of position, shifting the control surfaces out of their proper position, neutralising their effect. i'll test this properly as soon as i can and let you know, but i think that's an interesting possibility.

ok i just ordered a 17t ansmamn bell, presume this should be a pretty safe bet

I just chewed up the clutch bell on my picco 28 and bust the bearings.. it's in my yper st. any suggestions and links on what to replace it with?

hmm. no it's not flex with me eithe- CF tube pushrods, they're tough as old boots. someone told me they thought it was because of the shape of the wing, so at high enough speed the wing body obscures the elevons when you try to pull up leaving them out of the air flow and ineffective- i thought that was probably not what was happeniing, that it was prob just servos. sounds like it may actually be true innit. hmm.

put a 6x5.5 on, through the wattmeter, surprised to see it was only pulling about 31 amps, for around 458 watts put on a 7x5 APC sport, 35 amps, for about 530 watts (4s) so i took a decent 60 amp ESC off my big wing, and mounted a 7x6 E prop from EMP. That's more like it, static it's pulling 60 amps, 888 watts took that down the marshes, and yeah, that's the ticket. It's got bags of power now. Probs with trim though - pushing down at high speed, which i think must be C of G slightly too far back. Added a couple of nuts to the nose, but then the tape hinge on one of the elevons gave up the ghost so i need to do a repair before I go back out. Also- at high speed I lose all response, which is not ideal! I guess this must be insufficient torque from the servos. Could try bringing the push rod down to a closer hole on the servo arm (it's on outermost arm at the mo) or could go straight to a bigger servo. Might try a closer hole first, see if that gives it enough extra torque and still sufficient travel. If I can persuade the thing to fly straight and respond to inputs at speed this is going to be a blast!

this is SO AWESOME! Dudes in a 1:1 heli rescue an RC Mustang from a tree

took it out with 5.25x6.25 - it's a big no. there's hardly any thrust. kept it on for a battery but swapped back to 6x4 when it came down.

i'm not sure to be honest - i haven't done any fast close passes yet, will work up to that gradually, have kept nice and high so far. i'd certainly estimate it will go over 100, but no idea how fast. it's still got those wheels on which are draggy, i don;t really want to take them off. it would be faster without of course.

yeah i don;t think i've got any 6x5.5 props in. in fact i don;t think i've got any other 6 inch props except 6x4. i've got some 5.25 x 6.25 which might be quicker than 6x4. You got any thoughts on that?

I've put the motor from a Parkzone Stryker F27Q (2200kv) on my slipstream, and running it on 4s. It's running nicely with a 6x4. I've got a turnigy trust 55amp ESC in it which i've found to be a bit crappy to be honest. I tried a 7x6 prop on this setup but the ESC couldn't handle it. 6x4 works nicely though. might try a higher pitched 6 inch prop on it, or may chuck a bigger esc on it and try 7x6 again, we'll see. but yeah it's a nice setup with a 6x4 anyway. fast for sure.

I've souped up my battered Parkzone T28 I've whacked on a turnigy 3648 1450kv motor rated at 1600 watts spinning a 9x6 prop through a 100amp ESC Ran it on 5s today for the first time. Definitely quick. Quite heavy but not too bad, still flies lovely. Went through a 2200 5s 30c pack in what felt like no time and the batteries (a 3s and 2s in series) were hot. Think I need a bigger lipo. Stunts and stuff are supercool on it now with the extra power, pop tops and spins and things are really fast. It's great fun.

i sometimes read rcm&e http://www.modelflying.co.uk/editorial/page.asp?p=611&gclid=CLjNl-vIwrICFUfKtAodJioAFQ i'd get it more often if i could find it in the shops

Jesus Christ! That's a pretty serious plane you've got there!

NOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOOO! OH THE HORROR! at least it's repaired now! is it flying yet? what model is that? love the thrust vectoring!

I need to work out the autopilot next! Which means I've got to get my UHF long range control system sorted first, as I don;t trust the cheapo orange rx at all any more - loose connections after the big crash caused subsequent crashes, plus if it flies off a bit under autopilot i want to make sure i'm still able to fly it back!

no the gopro was totalled. I'd previously scratched the lens on that one so not a complete disaster, but still. Lesson learned - FLY CASED!

nah it's good as ever. i built it very strong, seems to be paying off. i've needed to put a couple of bits of CF strip in to fix cracks in the main CF spar, and poured some gorilla glue and thin CA in to gaps between the foam sheets where they have very slightly delaminated after the big crashes but that's it. the foam sheets are laminated together with carpet tape, which adds strength. it's got balsa leading and trailing edges and a big CF square section tube spar across the wing. Strapping tape and then laminating film covering. The thing is practically unbreakable!

Sausage Drone Stage 2 is finally complete! Hoorays! The sausage drone is now capable of parachuting sausages! Marvel at the glory of my journey in to science and engineering, and my many many crashes

i dunno about that one mate. i just tried a FY30a in my big wing (aka sausage drone) at the weekend. I don;t know if it's going to be a goer because the wing has such a range of speeds- in order to get it sensitive enough to have any effect at lower speeds, once you give it a bit of throttle the wing starts rocking left and right as it over corrects, as the sensitivity of the controls picks up. set the sensitivity really low so it doesn;t do that at speed and it doesn;t seem to have any effect when you're pootling round at quarter throttle. i'm going to have a look around and see if this is an insurmountable problem, i expect it is, as you'd have to get the sensitivity to drop as the speed gets higher, but maybe i'm missing something so yeah if that is the case, then a fast plane like a wing is maybe not ideal for these kind of stabilisers.

yeah they all work great - i'm a long way off being able to hold full throttle long enough to tell much difference in overall performance. They're all mental. the 5.25 x 6.25 haven't arrived yet, which are supposed to be the fastest, but i'm not in a hurry to put them on. 5x5 and 6x4 are both totally bonkers.

tried a 6x4 on it, that works great too. managed to stall on a turn in to final approach though, and have bashed the motor mount, it's snapped off its little legs, just a disk of plastic now. fixing with a lot of gorilla glue, will see if that works!

to be honest i don;t spend enough time on full throttle to give you a decent anwer to that- better to ask me when i've got enough time on it to really open it up! it's fast enough on 4s with the 5x5 for me to only give it a couple of seconds full whack at a time. most of the time i'm going round at about 2/3 throttle at the mo. much the same as with the stock prop, except the esc isn;t burning out