Daniel Cardona Posted August 27, 2018 Share Posted August 27, 2018 Hi Simon did you used a normal plastic engine mount for the kwik fly or you mounted the engine to the firewall from the back plate? the space in the engine compartment is very small if i recall. Kind regards Daniel Cardona Quote Link to comment Share on other sites More sharing options...
Simon Feather Posted August 28, 2018 Author Share Posted August 28, 2018 Hi Daniel, Yes, I used a standard nylon mount: I don't like not having free access to the engine, so I made the cowl removable, and basically shaped it around the engine. Plenty of room for the 61FX with this approach. Following pictures should hopefully be more or less self explanatory: I glued some hardwood blocks to the firewall to give hard mountpoints for the cowl, then screwed some thin ply onto these after protecting them with sellotape. Then mount the engine - the black mount in the pictures isn't the one I used in the end as it was too large. I then used a sacrificial plastic spinner base plate tack glued to the nose ring with spacers, fix that to the prop shaft, then start gluing lumps of balsa on between the ply mounts and the nose ring. Once all dry, remove the spinner base plate, remove the cowl, remove the engine, refit the cowl and sand to shape. Result is a tailor-made cowl that fits well but is removable easily for engine maintenance. Works a treat. Roughly sanded to shape: Checking fit - cutout for exhaust still needed: Final cowl, which I glassed on the inside and covered with film on the outside: Hope this helps! Simon Quote Link to comment Share on other sites More sharing options...
Daniel Cardona Posted August 28, 2018 Share Posted August 28, 2018 Hi simon Yes, that explains a lot of things, thanks!. Do you still own the model? do you think a good modern 46 engine would be enough for this kind of model or a 55 or 60 is a must? Thank you again for your kind reply. Daniel Quote Link to comment Share on other sites More sharing options...
Simon Feather Posted August 29, 2018 Author Share Posted August 29, 2018 Hi Daniel, yes I still regularly fly this. If you build one at the original scale (i.e. 60" wingspan), remember that it was designed for the 60-size engines of the late 1960s, so a modern 61 provides really sparkling performance in the air and virtually unlimited verticals. You might get away with a modern 52 maybe but I wouldn't go any smaller - even with the modern 61, the take-off run is quite long and you have to be sure it's got airspeed before rotating. If you're looking for something for a smaller engine, look at Martyn Kinder's Kwik Fli 40 **LINK** or the more recent Flea Fli **LINK** threads Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 12, 2022 Share Posted March 12, 2022 I just found this post, I am building a German laser kit, I am putting an OS .46 ax in but I might get an OS 55 ax as they are cheap at the moment hoping that it will do the job, ps Retracts and silk finish, build thread on rcgroups. Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted March 13, 2022 Share Posted March 13, 2022 Here? Kwik Fly 3 German kit build - RC Groups Being born and bread in what was once "Great Britain" please bear with my English Humour, I have started "another" Kwik Fly thread here as I have upset someone,,,( Here Is where I keep my mouth shut ) ? Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 13, 2022 Share Posted March 13, 2022 Yes Sir, So will my OS .46 AX do the job or throw my money away on an OS .55 AX,,, 168€ with the postage,,, Quote Link to comment Share on other sites More sharing options...
EarlyBird Posted March 13, 2022 Share Posted March 13, 2022 1 minute ago, Paul De Tourtoulon said: Yes Sir, So will my OS .46 AX do the job or throw my money away on an OS .55 AX,,, 168€ with the postage,,, I was going to ask you for advice on an electric setup as IC is not an option for me. Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 13, 2022 Share Posted March 13, 2022 Oh dear, don't ask me if it doesn't smoke, split your ear drums and oil your hands I am not interested,,,? There is a German forum of my kit, and one with an electric motor, what's your German like ?. 200w / 250watts per kilo,,,, https://jivaro-models.org/formules_magiques/page_formules_magiques.html Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 26, 2022 Share Posted March 26, 2022 Getting to the end of my built, putting an Irvine .53 in it, at the moment inhaling dope,,, Quote Link to comment Share on other sites More sharing options...
David Ovenden Posted March 26, 2022 Share Posted March 26, 2022 The plane was looking good and the garage smelling of dope when I dropped by this afternoon! Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 26, 2022 Share Posted March 26, 2022 Yes for a moment I thought I had gone back to the Flower power days,,,,? Quote Link to comment Share on other sites More sharing options...
Hans Posted March 25, 2023 Share Posted March 25, 2023 Hi , do‘s anyone have a CAD file ? I am fling the graupner MK III electric…. maybe want to build one with gas ? Hans Quote Link to comment Share on other sites More sharing options...
Andy Stephenson Posted March 25, 2023 Share Posted March 25, 2023 Hans, You may want to read the article on the Outerzone about the Kwik Fli. If you scroll right to the bottom of the page there is a write-up that the designer Phil Kraft wrote about the design development including the KF IV, the tapered wing version. https://outerzone.co.uk/plan_details.asp?ID=7431 Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 25, 2023 Share Posted March 25, 2023 3 hours ago, Hans said: Hi , do‘s anyone have a CAD file ? I am fling the graupner MK III electric…. maybe want to build one with gas ? Hans Gas wouldn't work here, as it only comes in tins too big to fit in the fuselage.😅 1 Quote Link to comment Share on other sites More sharing options...
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