Allan Bennett Posted October 26, 2018 Share Posted October 26, 2018 Such a shame -- I know how you must feel. Like me you didn't seem to have been using flaps. Do those who have successfully flown the Mossie think that flaps would have saved us by delaying the wingtip stall? I was toying with the idea of starting again since I've got the plans and all the equipment, but now I think I'll go for something simpler instead, with less-tapered wings. TN's Hurricane looks interesting, it uses the same motor so my equipment wouldn't be wastwed. Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted October 26, 2018 Share Posted October 26, 2018 Hi, I can only speak for my self, but I don't think there is something specifically wrong with the design or high wing loading. It is more fundamental than that.... Learnt on foam planes that have low wing loading and you can get away with "cut and glide", resulting poor technique of throttle control Foam models have generally low mass and large control surfaces which helps with recovery at low air speed, results in poor apperception energy management Electric is too controllable...more on that later! Extra problems that skilled builders and experienced fliers may not fully appreciate for people like me. You guys have flown models with high wing loading and narrow flight envelopes (not a problem in its self), so you have a broad range of skills. And here's my point Typically the model will fly well, but it will not take prisoners if you get it too slow. high weight, high wing loading and small control throws just give too little time to save it. I buried my BH electric mosquito (ARTF) on landing as it did not appreciate the increased drag of flaps and gear (I have to fly in with close to 50% throttle just to keep it flying). I buried my TN Ta154 last week because I slowed up to much and did not fly it to the ground. PS IC has and advantage, I don't like flying them with the throttle shut at low height, its subtle but I can't tell if its running of not...the result is that I am always flying at quite high throttle settings (sounds nice!). My point is that electric is very reliable, but it can get me into a poor habit...flying too slow. PPS Flaps would have made it worse! more lift, but more drag, the issue (IMHO) was lack of airspeed (I am still learning the hard way). Edited By Chris Walby on 26/10/2018 07:18:07 Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted October 26, 2018 Share Posted October 26, 2018 Further to the above, I also have the TN Hurri from the free plan. This uses a Tgy 50/50 Aerodrive motor the same as my Mossie but this time on 5S 5000 (1x3s and 1x2s to be able to just squeeze them in up against F1). Way over powered of course but I would have needed the nose weight anyway. It also carries a sound system and the wing loading is fine, the model being quite easy to fly. The thing is, I also find that with the lack of motor noise it is difficult for me to get the throttle setting correct on the approach, and need to be careful with it on downwind turns. I use half then full 80 deg. of flap but if they are left in on touchdown it will invariably nose over. From the video it appeared that the power must have been reduced (as you would normally tend to do). I kept full power throughout the flight till just before touchdown and did not use flaps since there was a large trim change when I tried them during the flight. Edited By Martin McIntosh on 26/10/2018 09:23:16 Quote Link to comment Share on other sites More sharing options...
jimnick Posted January 29 Share Posted January 29 On 09/02/2017 at 19:42, Geoff Gardiner said: Thanks gents. The camera angle/lens used to take the pictures has made the wheels look a bit oversize. I have recently purchased a cheap 3D printer which is waiting to be put together. In the meantime I have been learning how to use CAD software. I am having a go with Autodesk Fusion 360 which is free to use for students and hobbyists. So far I have produced some exhaust stacks which I may use on the Mossie. /sites/3/images/member_albums/42665/723170.jpg /sites/3/images/member_albums/42665/723169.jpg More later... Hi Geoff, this is an old post but maybe you’re still active. I’m going to try and make some working exhausts to go with the RCGF15re that my father is putting into his. don’t suppose you have a 6 pipe version of your model? hopefully going to get them printed in sintered aluminium or worst case wax and cast them. Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted January 29 Share Posted January 29 Six...really? PS Although the longer nacelle versions did have six exhausts! Quote Link to comment Share on other sites More sharing options...
Colin Carpenter Posted January 29 Share Posted January 29 Exhausts were siamised iirc ? Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted January 29 Share Posted January 29 The problem was hot exhaust gases from the inboard stacks being ingested into the radiators/oil coolers, which required the aft cylinder exhaust to be siamesed with the cylinder forward of it to ensure the exhaust gases were ejected under the wing. British built Mosquitos were invariably fitted with the same style exhaust arrangement on inboard and outboard sides of the nacelle. Some Australian built Mosquitos with single stage Merlins were fitted with siamesed five stack exhausts on the nboard sides of the engine and separate six stack exhaust ejectors on the outboard sides of the engine with no detrimental effects to the wing leading edge, the exhaust was far enough forward for the gas to pass under the wing on the outboard side. So, if you spot a photo of a single stage Mosquito with 6 stack exhausts, these will only be on the outboard sides, the difficult to see (at the same time in the same photo) inboard stacks will be 5 stack with the aft pair siamesed. Quote Link to comment Share on other sites More sharing options...
jimnick Posted January 29 Share Posted January 29 3 hours ago, Chris Walby said: Six...really? PS Although the longer nacelle versions did have six exhausts! yes he’s building the later Mosquito FB Mk VI which some had the 2 stage engines which were longer and avoided the radiator thus able to have 6 pipes. I’m sure there’s purists out there who will mean other features won’t match but that’s what he wants so I’m just here to do the grunt work. I’ll model myself if I can find them. Quote Link to comment Share on other sites More sharing options...
Geoff Gardiner Posted January 29 Author Share Posted January 29 8 hours ago, jimnick said: Hi Geoff, this is an old post but maybe you’re still active. I’m going to try and make some working exhausts to go with the RCGF15re that my father is putting into his. don’t suppose you have a 6 pipe version of your model? hopefully going to get them printed in sintered aluminium or worst case wax and cast them. Sorry, no. I only did the five pipes. Quote Link to comment Share on other sites More sharing options...
jimnick Posted January 30 Share Posted January 30 10 hours ago, Geoff Gardiner said: Sorry, no. I only did the five pipes. would you be willing to send me the CAD. I could modify Quote Link to comment Share on other sites More sharing options...
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