Kyle Communications Posted February 6, 2018 Author Share Posted February 6, 2018 You know Bob the dollars involved in a lot of these models are quite a bit more than your Sav kit. Link to comment Share on other sites More sharing options...
IBob Posted February 6, 2018 Share Posted February 6, 2018 I can believe that, Mark.......and almost certainly the hours too........ Link to comment Share on other sites More sharing options...
eightyknots Posted February 6, 2018 Share Posted February 6, 2018 Those models look pretty wild ...fitted with good sized jets! Link to comment Share on other sites More sharing options...
Kyle Communications Posted February 6, 2018 Author Share Posted February 6, 2018 31kg thrust in a lot of them. 20 and 25kg of thrust is very common now Link to comment Share on other sites More sharing options...
eightyknots Posted February 6, 2018 Share Posted February 6, 2018 I understand a Rotax at maximum revs and with a good prop gives about 230 lbs of thrust, a bit over 100 kg. 2 x 31 kg = 62 kg. Perhaps a couple of jets, one on each wing, would power my Savannah nicely. Would two jets be cheaper than a Rotax engine? 1 Link to comment Share on other sites More sharing options...
Kyle Communications Posted February 6, 2018 Author Share Posted February 6, 2018 yes they are about 6K each...but you will need much bigger fuel tanks..they suck up about 1.5ltrs per minute Link to comment Share on other sites More sharing options...
eightyknots Posted February 6, 2018 Share Posted February 6, 2018 yes they are about 6K each...but you will need much bigger fuel tanks..they suck up about 1.5ltrs per minute Ouch! With 4 x 36 litre tanks in my Savannah (144 litres), and allowing half an hour of reserve fuel, I would only have an hour's flying time. I think I will have to stick to the Rotax for now. Link to comment Share on other sites More sharing options...
Marty_d Posted February 6, 2018 Share Posted February 6, 2018 That'd be 1.5 litres per minute EACH, 80kts - so unless you're prepared for 180 litres per hour, probably best to stick with the spinny thing on the nose. Link to comment Share on other sites More sharing options...
eightyknots Posted February 7, 2018 Share Posted February 7, 2018 That'd be 1.5 litres per minute EACH, 80kts - so unless you're prepared for 180 litres per hour, probably best to stick with the spinny thing on the nose. That is a lot of fuel. How do they store so much in those model aircraft? Link to comment Share on other sites More sharing options...
Kyle Communications Posted February 7, 2018 Author Share Posted February 7, 2018 Most jets only fly for 5 to 7 mins...and that fuel flow is at full power so you can get away with 6 to 10 litres on board Link to comment Share on other sites More sharing options...
Kyle Communications Posted February 11, 2018 Author Share Posted February 11, 2018 In Lower Hutt at the moment...you guys have really turned the weather on for me :)...still having a great time though Link to comment Share on other sites More sharing options...
eightyknots Posted February 11, 2018 Share Posted February 11, 2018 Hi Mark, When are you planning to be in the Wairarapa? Link to comment Share on other sites More sharing options...
IBob Posted February 13, 2018 Share Posted February 13, 2018 Hi Mark & Denise, Thank you for taking the time to swing by our place, it was a real pleasure to meet you both. Hope the remainder of your stay makes for some good days. Go well & keep in touch, Bob & Leigh Link to comment Share on other sites More sharing options...
Kyle Communications Posted February 13, 2018 Author Share Posted February 13, 2018 Hi Bob Yes it certainly was great to catch up. We both had a great time. We are in Napier for the night at the moment. Will do some touring around tomorrow...have already done some driving around to get my bearings....its a bloody big bay out the front. Have decided to bypass going to Gisborne and head to Taupo for a day or two then maybe Rotorua then back to Auckland on saturday morning. Weather at least is better now. Stayed with Perry and Janine last night and Peter and Nicola came over for dinner. We had a great meal and really good time. Peter was going to land at Perry's in the morning and I was going to go for a fly with him...was looking forward to dropping in on some gravel bars in the river but sadly the wind wouldnt play the game so we didnt go this morning. I caught up with Hank this morning and had a good chat. Called into Hood Aerodrome to see the vintage aircraft but it was closed ...that was a real bummer I was looking forward to it. Keep plodding along with your build the hard part is all done :) Mark Link to comment Share on other sites More sharing options...
IBob Posted February 13, 2018 Share Posted February 13, 2018 Hi Mark, good call, I'd say, for your remaining time. Sorry to hear the winds refused to co-operate, though. You'll just have to come back! Thanks for your encouragement and suggestions on the build. Travel safe and see you again somewhere, sometime...) B&L Link to comment Share on other sites More sharing options...
eightyknots Posted February 13, 2018 Share Posted February 13, 2018 Hello Mark and Denise, It was really lovely to catch up with both of you. I also valued your helpful suggestions and handy tips. As you could see today, I am at the very beginning of my Savannah build. I am under no illusion that there is a considerable journey ahead to unite all of the pieces of aluminium in my shed in a meaningful way with thousands of rivets, 'AN' hardware and rivnuts, then fit an engine and propeller and get the ship airborne. I am sure that I will enjoy (most of) the journey itself but I really look forward to the reason why I am building this aircraft: so that I can fly! Thanks also for the offer to contact you if I get really stuck on something. That is really appreciated. PS: Next time you may choose to fly to Enzed via Lord Howe Island, Norfolk Island and Kerikeri in Mabel. Link to comment Share on other sites More sharing options...
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