bert baker Posted March 5, 2022 Share Posted March 5, 2022 (edited) never given the tank much thought. your more than welcome to join me on the flight line skip, slip or cartwheels Just be sure to have some fun Edited March 5, 2022 by bert baker Quote Link to comment Share on other sites More sharing options...
bert baker Posted March 5, 2022 Share Posted March 5, 2022 10 hours ago, bert baker said: skip, slip or cartwheels Handstands are optional Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted March 5, 2022 Share Posted March 5, 2022 This is on here near the beginning of the thread and please, before anyone pooh-poohs it remember that my Stampe has using this system since its inception around 2013. I too was faced with the dilemma of how to fit a tank, given that the original design was for a much shorter 2st, and with the u/c and strut wires in the way I came up with this. The 9oz upper tank will suffice for most 10 min flights. If inverted flight is performed and then a half outside loop done from this presents no problems since the lower tank will only draw in a little air. In normal flight the pressure exerted to the lower tank through a 2mm tube to the lower is negligible, even when taking G force into account, just like turning a tap to a dribble. 1 Quote Link to comment Share on other sites More sharing options...
Paul De Tourtoulon Posted March 6, 2022 Share Posted March 6, 2022 (edited) So you went to a french technical college,,,,?, why oh why is it so simple ?.? I can see a lot of space between the fuselage bottom and carb, what's stopping you cutting out a bit of it and fitting the tank there ?. Edited March 6, 2022 by Paul De Tourtoulon fuselage bottom Quote Link to comment Share on other sites More sharing options...
Danny Fenton Posted March 6, 2022 Share Posted March 6, 2022 I think the problem is the undercarriage forward struts are clamped to the bulkhead on the inside. You can just see the nuts. So if you wanted to use that area the undercarriage would need a re-design. Cheers Danny Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted March 6, 2022 Share Posted March 6, 2022 Spot on Danny. 1 Quote Link to comment Share on other sites More sharing options...
cymaz Posted March 6, 2022 Author Share Posted March 6, 2022 Why not make a hatch in between the formers. then make a cut out above the front UC wire. Might be worth investigating 1 Quote Link to comment Share on other sites More sharing options...
cymaz Posted March 6, 2022 Author Share Posted March 6, 2022 I love hatches on airframes, you can move and hide stuff , easy access to hidden servos and controls. The caveat is that they’ve got to be put in at the build to make them almost invisible Quote Link to comment Share on other sites More sharing options...
bert baker Posted March 6, 2022 Share Posted March 6, 2022 If adding a tank lower down like Martin has done I take i that as it will always be full until the main tank has emptied it therefore doesn’t need a clunk line Quote Link to comment Share on other sites More sharing options...
Peter Jenkins Posted March 6, 2022 Share Posted March 6, 2022 It will do as the tank starts to empty. Quote Link to comment Share on other sites More sharing options...
Jon H Posted March 7, 2022 Share Posted March 7, 2022 The setup recommended by Martin does not work and the performance of the engine in his model is poor. This setup actually makes the fuel head change problem worse than if just one tank was higher up as the lower tank is not pressure isolated from the one above causing substantial mixture changes through the flight. Cut a hole, lower the tank. Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted March 7, 2022 Share Posted March 7, 2022 Jon, you have seen my model fly enough times to know that the performance is perfect, on both the 155 and 180, so why state that it is not? At W&W I was on the 155 whereas others were on 180s so mine was a bit slower in level flight. For reasons stated above, using two tanks as shown negates any head of fuel problems, unlike a single high tank. If it did not work I would not use it. Quote Link to comment Share on other sites More sharing options...
Jon H Posted March 7, 2022 Share Posted March 7, 2022 Yes i have seen it fly, and my comment accurately reflects the performance i have observed. The frequent tuning and reliability issues noted are due to this tank arrangement. The lower tank is not pressure isolated from the one above in the setup you use so the engine will suffer as a consequence. You would have far better performance from the engine if the tank was installed as recommended. While you may find the performance satisfactory it is not operating at its best. Cut a hole, lower the tank. Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted March 7, 2022 Share Posted March 7, 2022 Sorry, frequent tuning? You must be confusing me with someone else because I never need to touch it. Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 7, 2022 Share Posted March 7, 2022 Gents, looks to me you're never gonna agree on this and going around in circles, move on please or start a thread on tank positions and discuss there. 2 Quote Link to comment Share on other sites More sharing options...
bert baker Posted March 8, 2022 Share Posted March 8, 2022 Yep Cymaz started this in 2012 with the immortal words of I’m Going to start a Stampe build .........anyone interested, Yep we all were so be a shame to lock out a long running bit of Stampe history 1 Quote Link to comment Share on other sites More sharing options...
Nick Somerville Posted March 8, 2022 Share Posted March 8, 2022 2 hours ago, bert baker said: Yep Cymaz started this in 2012 with the immortal words of I’m Going to start a Stampe build .........anyone interested, Yep we all were so be a shame to lock out a long running bit of Stampe The Precedent Stampe is a real classic. The model has only a few issues regarding centre section strength, but easily rectified and well noted on this build log. With the original build and all the contributions it is a fabulous resource for any Stampe builder. 3 Quote Link to comment Share on other sites More sharing options...
cymaz Posted March 8, 2022 Author Share Posted March 8, 2022 (edited) I hope this all just calm’s down ....hopefully this thread has been an invaluable source to builders and flyers. It’s been going for nearly 10 years for goodness sake. If you want a debate by all means but I will back Jon at Laser 100%....there, I’ve nailed my colours to the mast. He goes out of his way to answer any engine questions without fail. Long running engine issues have got to be on another thread please. Thanks I hope this post will not incur the wrath of any Moderators Edited March 8, 2022 by cymaz 2 Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 3, 2022 Share Posted June 3, 2022 Flew the Stampe yesterday....overpowered. bill 20220602_171316.mp4 1 Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 3, 2022 Share Posted June 3, 2022 GREAT FUN 20220602_171827.mp4 1 Quote Link to comment Share on other sites More sharing options...
bert baker Posted June 3, 2022 Share Posted June 3, 2022 Coolio What motor you got fitted what elevator control do you have push rod, snake or closed loop Quote Link to comment Share on other sites More sharing options...
cymaz Posted June 3, 2022 Author Share Posted June 3, 2022 (edited) Whatever it’s got...there’s a lovely strip to land on☺️ I want a go ! Edited June 3, 2022 by cymaz Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 3, 2022 Share Posted June 3, 2022 (edited) lasor 150 but idle to high as it floated and did not want to land. Rudder closed loop, ailerons two servos ,elevator single servo, throttle sullivan snake bill Edited June 3, 2022 by William Macleod Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 3, 2022 Share Posted June 3, 2022 trimmed the take off video. strong wind from right hand side.... slight tailwind 20220602_171449_Trim.mp4 Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 3, 2022 Share Posted June 3, 2022 touch and go...great model to fly 20220602_171556_Trim.mp4 Quote Link to comment Share on other sites More sharing options...
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