Erfolg Posted October 28, 2013 Share Posted October 28, 2013 Well, Graham may be finished, the race is not yet quite over. I may the first of the losers at present, there is yet time to push me further back, so sharpen those scalpel blades, get out your axes and get cracking. I think I am now 1/3rd of the way through the wing, you can probably build over two plank wings in the time it will take me to finish the one built up. A lot to do yet! Quote Link to comment Share on other sites More sharing options...
GrahamC Posted October 28, 2013 Author Share Posted October 28, 2013 No not finished! Had a few more hours on it today.... And decided it would look nice with a canopy... Getting there now.. but all the fiddly bits to do! Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted October 28, 2013 Share Posted October 28, 2013 I always wanted to be a tortoise, looks like I'm finally getting my wish. (My wife tells me that I've got a very thick shell, among other things)! I have the same thought as Graham about a canopy rather than the original design approach and he's proved that it looks better, (well, to me anyway). This is a model where one or two cosmetic tweaks can make it look quite different, loads of scope there. Mind you, by the time that I get started it looks as if Graham and Erfolg will have a squadron of Pushy Cats in the air (Pushy Tigers)? I'll get started eventually. Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 28, 2013 Share Posted October 28, 2013 With a canopy it looks like very similar to a FW Flitzer Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted October 28, 2013 Share Posted October 28, 2013 You're right Erfolg, it blooming does. Now there's a colour scheme for a start off, very interesting. I think Kurt Tank had that one half built before he abandoned it and moved on, to the Ta183? Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 28, 2013 Share Posted October 28, 2013 Colin, I think we have met at Greenacres, 2013, if you flew a Fw 190D? I was admiring your model. Secretly lusting over it. Quote Link to comment Share on other sites More sharing options...
Colin Leighfield Posted October 28, 2013 Share Posted October 28, 2013 No Erfolg, I was hoping to see you but didn't realise you were there, unless we met unknowingly. The 190 you mention was an original Mick Reeves 190D9. I've got one the same though and flew it at the Fradley Scale Day in July. The only plane I had at Greenacres on both days was my navalised (!) Tucano, which I plucked up courage to fly in a gale on the Sunday. Pictures of the Fw in my album, but I won't copy one on to here, it wouldn't look right in a Pushy Cat build blog! Quote Link to comment Share on other sites More sharing options...
Tim C Posted October 29, 2013 Share Posted October 29, 2013 I have retrieved the PC from its resting place and made a start on the restoration/completion. I constructed the model with a removable wing, the wing locks fore and aft between the lower fuselage sections fore and aft, with a simple ply plate and captive nut, this was done less for removal for storage, but to give access to the esc in the section behind the rear bulkhead, I had mounted the servo on rail on the fuse so you have to disconnect them to remove the wing. A useful ti is to make sure that servo adjustment for the aileron linkages is on the servo end not the torque rod end as you cannot reach it when assembled. Quote Link to comment Share on other sites More sharing options...
Tim C Posted October 29, 2013 Share Posted October 29, 2013 I ran up the motor just to test it was still working, it pumped out a healthy 180 watts on a gws 7 x 3.5 prop, so all was well, but its a noisy beast as it resonates, I might ad a small ply plate to the underside of the fuse round the motor, as this is wafer thin and it might help reduce the resonance. I also dug out the GYRO, its a Hobbyking 401B, and played around. This is the GYRO Test rig, I set up the gain lead to CH6 Flap switch and adjusted the EPA until I got the LED to light on the GYRO indicating on and then tweaked the EPA until I got the Flap switch to turn of, playing around seems to have got a reasonable start setting where I can switch the GYRO on and off and when on the gain to move the servos is stable without jitter Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 29, 2013 Share Posted October 29, 2013 Tim A few more pictures with the model assembled maybe? I have one of the HK orange cased gryro, I had/have considered using it, although I wondered if the all up weight could be a bit high? Quote Link to comment Share on other sites More sharing options...
Tim C Posted October 29, 2013 Share Posted October 29, 2013 I will post up more pics in due course. The 401B Gyro is 12.5g and total of 21g when combined with the 6ch Orange RX i will use. I see the new combined V3 GYRO/RX from Orange is only 15g, I have one on order for another project, I cannot see that if you used the HK V2 Orange 3 Axis GYRO at 14g it is going to be much of a weight penalty, the only reason for using the 401B was that I had one in the box of bits already and I could not see the point of stabilising the pitch as well as the roll. Next step is to make up a suitable mount for the gyro (it needs to be in the vertical plane, near the CG) Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 29, 2013 Share Posted October 29, 2013 Its the myriad of cables that probably weigh more than the unit itself. I have been tempted, partly because I do like experimenting. Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 30, 2013 Share Posted October 30, 2013 I am waiting, not very patiently for others to start, Graham has, Tim is refurbishing yet another! the race for the 1st. of the losers is still open, wide open, I still have not finished my wing. This is as far as I have got. I am getting there, painfully slow, I know. At present my wing is weighing in at 177 grams. it would be interesting to know how much a similar sheet wing weighs? I would bet, quite a bit less. So there is the trailing edge to add and the wing tips. Quote Link to comment Share on other sites More sharing options...
Tim C Posted October 30, 2013 Share Posted October 30, 2013 Well the whole Wing, inc servo, and boom half covered is 186gm As you can see I have removed the lower 'gashup' of covering, a mix of mismatched Profilm and Solarfilm, guess which side was Solarfilm??, It will be replaced using the excellent ChinaCote Edited By Tim @ ModelMarkings.com on 30/10/2013 14:18:11 Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted October 30, 2013 Share Posted October 30, 2013 well, I suppose I have started, theoretically. I bought a stack of wood while at Gaydon LMA show. Now if Trapplets would PLEASE send me the plan I paid for! Quote Link to comment Share on other sites More sharing options...
ken anderson. Posted October 30, 2013 Share Posted October 30, 2013 iv'e set a thread away for the ne...1 contribution c/w some photo's.. ken Anderson...ne...1. one of the lads dept.... Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted October 30, 2013 Share Posted October 30, 2013 and I've added a question. I'm also surprised that the LE sheet isn't cut the other way so that the grain follows the LE. Wouldn't that make it more resistant to warping and easier to shape? Quote Link to comment Share on other sites More sharing options...
Erfolg Posted October 30, 2013 Share Posted October 30, 2013 Hmmmmm. I am not sure if there is any significant difference in resistance to warping, or even dinge resistance from arranging the sheet, parallel to the LE or as opposed to the TE. I think the reason that the TE has been chosen is that the sheet can be arranged to provide the max span, per std. sheet length. Quote Link to comment Share on other sites More sharing options...
Bob Cotsford Posted October 30, 2013 Share Posted October 30, 2013 good point. Quote Link to comment Share on other sites More sharing options...
WolstonFlyer Posted October 30, 2013 Share Posted October 30, 2013 Hurray, my back issue of the magazine with plan arrived today! I have a 2200kV motor, 6x4 prop, 30A ESC and servos put to one side so it should be a nice low cost build Edited By WolstonFlyer on 30/10/2013 18:56:23 Quote Link to comment Share on other sites More sharing options...
brfc7 Posted October 30, 2013 Share Posted October 30, 2013 Well I've decided to give building a go Really enjoyed the 2 or 3 flights I had with ken andersons Mk2 that I bought off him before the canopy came off mid flight hitting the prop and destroying the model Already have the plan and magazine so tonight I've traced around the tailboom with greaseproof paper and sorted out my shopping list for what wood I need. Mod 1 - I'm going to us 2 servos on the ailerons but as I changed on my last PC I will glue the servos to the top of wing with a direct carbon fibre link to the aileron Mod 2 - Leave off the finger grip on underside as it is fine to launch underarm holding the top, plus I've seen 2 people at our field receive very nasty cuts to the back of their hands launching PC's overhead, holding the fuz just behind the wing from underneath. Mod 3 - (Possibly) I might also like GrahamC, shorten the fuz and leave the motor out to the elements. baz Edited By brfc7 on 30/10/2013 21:42:56 Edited By brfc7 on 30/10/2013 21:45:56 Quote Link to comment Share on other sites More sharing options...
IanR Posted October 30, 2013 Share Posted October 30, 2013 Hello Baz. I like the idea of 2 servos for the ailerons, but if you simply glue them to the top of the wings won't they interfere with the airflow or aerodynamics or something or other? Would it be better to mount them in a cut-out in the wing so that they are flush with the bottom of the wing? I know they won't disappear altogether because the wing is so thin but it would reduce the amount by which they stick out. Or doesn't it matter one way or t'other? I'm asking because I shall do whatever you're going to do. Thanks. Ian. Quote Link to comment Share on other sites More sharing options...
Depron Daz Posted October 30, 2013 Share Posted October 30, 2013 Could someone tell me which edition of QEFI this plan is in please? Thank you! Quote Link to comment Share on other sites More sharing options...
brfc7 Posted October 30, 2013 Share Posted October 30, 2013 I was thinking should I just cut a hole right through the wing and glue the servo in solid but not sure if 1 - you would be compromising the wings overall strength and 2 - making sure you don't glue the servo mechanics up. I didn't fly my last PC when it still had just the single servo inside the fuz but to be honest with the 2 servos stuck on the wings it flew great. The wing isn't really much of an aerodynamic shape it's more down to plenty of power and owt will fly. I used to have a weston uk Tigershark that was a completely flat wing but it had a 53 engine so went like stink baz Quote Link to comment Share on other sites More sharing options...
brfc7 Posted October 30, 2013 Share Posted October 30, 2013 Posted by Depron Daz 393 on 30/10/2013 23:28:50: Could someone tell me which edition of QEFI this plan is in please? Thank you! Copied from a few pages back, was easy to find - Some useful information for potential Pushy Cat builders I have spoken to Q&EFI. They tell me that they have plenty of copies of the back issue in question, and they are available in the UK for £6.15 including P&P So If you want to join in with the build. Q&EFI are on +44(0)1684 588599 and the issue you need is January 2005. Edited By brfc7 on 30/10/2013 23:41:51 Quote Link to comment Share on other sites More sharing options...
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