Danny Fenton Posted May 27, 2022 Author Share Posted May 27, 2022 Thanks for confirmation on the Saito needing pressure. The exhaust would fill up a fair bit before it overflowed unfortunately Eric, should have put the nipple at the lowest point with hindsight, and with the price of fuel these days, can't be wasting it! I like the idea of some part of the line being visible, as its pressure I guess it wont matter if its over-long? Cheers Danny Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted May 27, 2022 Share Posted May 27, 2022 2 hours ago, Danny Fenton said: The exhaust would fill up a fair bit before it overflowed I don't think it will as the lowest part (s) are the exhaust stubs, you just need to keep an eye on the first (rear stub) for drips. Regarding the length of the pressure pipe, the length that we are talking about won't make any difference. 1 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted May 27, 2022 Share Posted May 27, 2022 (edited) 2 hours ago, Danny Fenton said: The exhaust would fill up a fair bit before it overflowed I don't think it will as the lowest part (s) are the exhaust stubs, you just need to keep an eye on the first (rear stub) for drips. Of course this assumes that you are not over exuberant whilst filling!!!!! Regarding the length of the pressure pipe, the length that we are talking about won't make any difference. Edited May 27, 2022 by Ron Gray website dropped link! 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted May 27, 2022 Author Share Posted May 27, 2022 The stubs are up inside the chamber a few millimetres, they are not flush. But you are right, its not that much to overflow. Cheers Danny Quote Link to comment Share on other sites More sharing options...
Charles Hart Posted May 27, 2022 Share Posted May 27, 2022 Looking good! 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted May 30, 2022 Author Share Posted May 30, 2022 Been looking at the tank, and the largest that will fit is a 16 oz DuBro. I had bought a 20 oz, but that's too long and too wide. The 16oz should be perfect. Question for you petrol heads, what sort of duration can I expect from the 16oz size tank with a Saito 82? Added the 3D venturi that I drew in Fusion 360, and friend Eric Strefford resin printed for me. It's actually scale for the type, just too big and the wrong colour for Uniform-Juliet, which uses a smaller one. Hey-ho don't tell anybody ? Cheers Danny 2 Quote Link to comment Share on other sites More sharing options...
alan p Posted May 30, 2022 Share Posted May 30, 2022 Danny your sport scale is so good you are giving me an inferiority complex. Not so many rivets as normal but still rather good. Well done BTW 12oz tank on a 62 2t gave 15min at full throttle for the friend that maidened my Typhoon when throttle stuck at full chat. 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted May 30, 2022 Author Share Posted May 30, 2022 Thanks Alan, there are only two areas that have rivets so I am in with-drawl too...... sounds like I should have plenty for an 8 minute flight. Cheers Danny Quote Link to comment Share on other sites More sharing options...
alan p Posted May 30, 2022 Share Posted May 30, 2022 With a 16oz tank and the throttle setting for the Auster scale flight you may need a food parcel sending to the pilot box? 1 2 Quote Link to comment Share on other sites More sharing options...
Nick Somerville Posted May 30, 2022 Share Posted May 30, 2022 That 16 once tank is sure going to give a long flight time Danny! Hopefully long enough to fully enjoy the sound of a sweet four stroke glow engine and encourage further forays away from Lipo power. Looking forward to your reports on living with wet fuel again. 1 Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted May 30, 2022 Share Posted May 30, 2022 I should take a torch Danny, you'll be up a while in a scale like manner, looking very good. ? 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted May 30, 2022 Author Share Posted May 30, 2022 I just hope my previous forays into IC are not repeated...... When I did my A test I had multiple dead sticks, just couldn't seem to keep an engine running consistently. Fingers crossed ? Cheers Danny Quote Link to comment Share on other sites More sharing options...
Charles Hart Posted May 31, 2022 Share Posted May 31, 2022 Looks great! I have a 10oz Dubro tank in my Bryant Chipmunk with a Laser 70, which I'm hoping will be large enough. 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 1, 2022 Author Share Posted June 1, 2022 (edited) well a vital part has arrived to allow me to mill my wheels to accept wheel covers, I have had a quick play on a practice wheel. I know you cannot contain yourselves can you ? Edited June 1, 2022 by Danny Fenton 1 Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted June 1, 2022 Share Posted June 1, 2022 Lol 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 2, 2022 Author Share Posted June 2, 2022 wheel covers are done, was going to attach them by screws, but the scale of even the smallest screw would be wrong. So went with the tried and trusted punched litho. Cheers Danny 2 Quote Link to comment Share on other sites More sharing options...
cymaz Posted June 2, 2022 Share Posted June 2, 2022 I do mine with a bottom of a drinks can! 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 2, 2022 Author Share Posted June 2, 2022 59 minutes ago, cymaz said: I do mine with a bottom of a drinks can! Nowt wrong with that, if you can find a suitable size and radius Cheers Danny Quote Link to comment Share on other sites More sharing options...
Charles Hart Posted June 3, 2022 Share Posted June 3, 2022 Very smart! 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 3, 2022 Author Share Posted June 3, 2022 Consider the un-scale like struts, this was probably too much, but was fun to figure out materials. Door handles next, and every Auster seems to have something different. The Pitot was the same, the Sephton Auster pitot was totally different, so I chose to model the one on G-AGTO ? Cheers Danny Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 3, 2022 Author Share Posted June 3, 2022 Continued with bits I had been mulling over for some time. The steps are quite large afairs and I was struggling to get them right. The first attempt, which involved soldering etc went in the bin. When I looked more closely at the full size I saw that the steps attach to the strut bracket, so I drilled at 45 degrees aft and 45 degrees outboard, the base of the struts, the assemblies were then fed through and CA'd into place. I can alter the angles slightly once the model is assembled to check they "sit" right. I have subsequently painted the brass airfoil sections silver. The underlying structure is aluminium tube. Cheers Danny 5 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 4, 2022 Author Share Posted June 4, 2022 (edited) I made the door handles from Chemiwood, and made a silicone mold. This means I can make replacements as I can see these are going to get broken off very easily! Just a few parts that are already made and painted to fit and the model is all but finished. I am just left with fitting the tank, engine and the remote glow, as well as a Rx pack and switch. Unfortunately the first thing I need is the tank. It's been a week and it still hasn't arrived mail order from Inwoods...... Should have accepted the extra £3 in fuel and driven to Wheelspin in Cannock. Ahh well. Cheers Danny Edited June 4, 2022 by Danny Fenton 1 Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted June 5, 2022 Author Share Posted June 5, 2022 The tank finally arrived so have started to add things to the airframe. If you IC guys spot anything wrong let me know please? I blanked off the rear pressure nipple hole, it was in a very poor spot and was close to the bulkhead. I re-tapped the exhaust and fitted a pressure nipple half way along the chamber. I am using a fill line under the rear of the cowl, green tube, it will be blocked off for flight obviously. I will do as suggested and watch for fuel at the rear stub when filling. I want to fit something in the needle valve adjuster collet to allow a small hole in the cowl to adjust the needle without removing the cowl. I am thinking if I lock in an M3 Allen bolt, then I can use an M3 Allen driver. Though it may be fiddly to find the head? Do these Saito's need much needle valve adjustment once set up? I hear stories of never touching a Laser needle valve once it's set-up properly? If very little tweaking is needed, I will accept needing cowl removal to adjust on that rare occasion. Cheers Danny Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted June 5, 2022 Share Posted June 5, 2022 You could lock in a piece of allen key n use a nut runner to adjust, you need to fine tune, so need access. Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted June 5, 2022 Share Posted June 5, 2022 (edited) Hi Danny, I use a piece of wire about 1.5mm diam, long enough to protrude through the cowl and bend the end over to about 90deg. in the end of the needle there is a grub screw that holds the wire. I hope you will have enough pressure with all those outlets Cheers Eric. Edited June 5, 2022 by Eric Robson Quote Link to comment Share on other sites More sharing options...
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