Chris Freeman 3
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Everything posted by Chris Freeman 3
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A stick with an upright motor will often result in the center of the tank tank being below the center of the carb which will then be the opposite when inverted. I side mount the motors on my sticks to overcome this. I would say the drop in revs is it is rich when inverted.
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RCM&E Autumn Special 2015- New 72" Mossi
Chris Freeman 3 replied to Tony Nijhuis's topic in Tony Nijhuis plan builders
I love the shape of the mosquito and built a BT one a few years ago and converted to electic. I build and fly for the fun of it so I do not go overboard with detail as I want to be able to enjoy the flying aspect as well. I kept the weight to minimuim to improve the flying side as in Johannesburg we have fot and high conditions. My final weight was 5.5 kg which was a little lighter than BT's one. Flew very well from the first flight and showed just how good the real aircraft was. Martin, I am sure you will be rewarded with great aircraft. -
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Great build so far, I find my building ability reduces as the size reduces.
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I have flown 2 Fokker D8's and both flew very well, 1 was 1/2 scale and overweight and the other was 1/4 scale but quite light. Both were a challenge on the ground as they are top heavy so you need to keep the wing as light as possible. My 1/4 one had the wheels joined to the axel and this helped the ground handling as both wheels turned at the same speed. The axel has brass tube bushings. Peter I once read a editorial by DB about some guy giving up the hobby as after 4 years he no longer found it a challenge, DB said that even if he lived for another 40 years he would not be able to do half the things he wanted to do. I see that even you after all these years are still learning! My apprenticeship in the hobby is now going on 46 years.
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Very nice build so far, I have the plan and could be tempted to build one as a Zero is a great flying aircraft. Thanks for posting the build so far.
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Brian Taylor Spitfire Mk 1 C of G
Chris Freeman 3 replied to Tim Cheal's topic in Building from Traditional Kits and Plans
2 Sundays ago a club member brought his new Seagull PT 19 to test fly. Nice looking aircraft that was powered by a Saito 180. I watched the flight that started with a take off run that was very short as the aicraft almost nosed over on take off and when up was given it lept into the air, lucky the power was enough to drag it to a safe altitude. The landing was a porpoise approach ending in a nose over. Later the owner asked my son to help trim it out but I saw the take off was another leap into the air and the landing was good but not the normal smooth approach that Byron does. I asked Byron if the elevator was not too sensitive and he replied that it was. Whilst reducing the elevator movement they also found that 40% expo was used so it was reduced to 10%. The aircraft was flown again and the owner could not beleive how much better it flew. -
Brian Taylor Spitfire Mk 1 C of G
Chris Freeman 3 replied to Tim Cheal's topic in Building from Traditional Kits and Plans
Pleasure Tim, on the YT models Spitfire they add a packer of ply onder the rear mount to get more forward rake. I have found that all my Spitfires that I have built and flown have had very few nose overs on take off as the thrust of the motor and wind over the elevators prevent it. The challange is to hold enough up to keep the tail down but not to take off without enough airspeed. Landings are the hard one, I try to land in a tail low attitude but not 3 point. I also tend to use the scale curved approuch as it is easier to control the speed and height. A long approach can be very tiring with a warbird as the elevator is very sensitive. Once down you need to hold all the up you can but with a grass runway you should not damage the plane if it does nose over. I am sure that once you are used to the flying you will see that the nose overs will be few and far between. You can see from the above picture that even the fullsize was not great at taxing around. -
Brian Taylor Spitfire Mk 1 C of G
Chris Freeman 3 replied to Tim Cheal's topic in Building from Traditional Kits and Plans
Do Not move the CG back, a Spitfire has very sensitive elevators due to the small taiplane size which was also evident on the full size. A Spitfire will need a lot of lead to get the CG correct so do not worry about that. You can try to rake the unercarraige forward a bit more to improve the ground handling. Take time to set up your control movements correctly and ensure that you do not have too much elevator movement. I set up the dual rates so I can reduce the movement once in the air and even land on reduced rates. If you have retracts you will find the Spitfire will drop the nose a little when the retracts are lowered and also more when flaps are used. Due to the nose over issues and nose down pitch with retracts, I have also found that expo can be an issue as about 10% is all that is needed as it will work against you when trying to get the nose up in certain situations. My Spitfires needed very little elevator movement and once set up correctly are very smooth flying aircraft. Another trait of the Spitfire is that when you do a loop you need to increase the up at the top of a loop and not reduce it like most other aircraft, as a Spitfire will try fly out inverted and you will need to pull it around. Many Spitfire models have been lost due to a spin fron the top of a loop. -
Forum members' new models: Let's see them.
Chris Freeman 3 replied to Paul Marsh's topic in All Things Model Flying
Just test flew my 2 Eindekerish which is an own design, one has a Saito 100 twin, the other is electric. The power modules are interchangable -
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Hello all. Cambria Piper Tri-Pacer
Chris Freeman 3 replied to DelRay's topic in Build Blogs and Kit Reviews
The TriPacer is a great aircraft but not that large, I have scratch built 2 from the kit that I have, The first one had a Super Tigre 90 that had plenty of power enen in the hot and High conditions in Johannesburg. The new one that I am building will have an old Enya 120 that just fits in the cowl. My kit cowl has shrunk over the years so before you start check the cowl fit to the firewall as I had to reduce the firewall to get it to fit. -
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A big pile of shavings later!
Chris Freeman 3 replied to Model Monster's topic in Tony Nijhuis plan builders
Great build so far, I love a Mustang and have had a few over the years as they sure do fly well. I alsways drill all the holes in the lower cowl just like the real one as it is a good way to get air out and it is scale. This is my Electric one scratch built from Top Flite plans -
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