fly_tornado Posted October 2, 2015 Share Posted October 2, 2015 finally flying 6 Link to comment Share on other sites More sharing options...
fly_tornado Posted October 2, 2015 Author Share Posted October 2, 2015 1 1 Link to comment Share on other sites More sharing options...
Marty_d Posted October 3, 2015 Share Posted October 3, 2015 Jeez that got up and went like a cut cat. Motor sounds good too. 2 Link to comment Share on other sites More sharing options...
facthunter Posted October 3, 2015 Share Posted October 3, 2015 Not as magic as Merlin. Nev Link to comment Share on other sites More sharing options...
Deskpilot Posted October 3, 2015 Share Posted October 3, 2015 Personally, I think it sounded better. Link to comment Share on other sites More sharing options...
eightyknots Posted October 3, 2015 Share Posted October 3, 2015 Is that yours f_t? Link to comment Share on other sites More sharing options...
fly_tornado Posted October 3, 2015 Author Share Posted October 3, 2015 no mate, that is a factory prototype, so owned by John Williams the owner of Titan Aircraft. Link to comment Share on other sites More sharing options...
eightyknots Posted October 3, 2015 Share Posted October 3, 2015 no mate, that is a factory prototype, so owned by John Williams the owner of Titan Aircraft. Are you thinking of supplementing (or replacing) y0ur Tornado with a T51? Link to comment Share on other sites More sharing options...
winsor68 Posted October 3, 2015 Share Posted October 3, 2015 Holy cow! Link to comment Share on other sites More sharing options...
Litespeed Posted October 7, 2015 Share Posted October 7, 2015 That is a lovely motor and perfectly suited for its application. It is a M70 V12 5litre. They were used in the 750 BMW limos, or it could be the later M73 which had 340hp rather than 300hp. Both had incredible torque and smooth enough to balance a 50cent piece on it side. A friend has 2 M70 and 3 brand new M73 in his workshop ready for car projects. They were on pallets and were damaged by a idiot forklift driver- easily fixed. Cost was $300 each. They are all alloy block and heads, and have separate injection and ignition for each bank. So will run on 6 if one system fails completely. They are actually a very compact engine for a V12 and weigh only the same as the iron block 2.5 liter six. 1 1 Link to comment Share on other sites More sharing options...
Litespeed Posted October 8, 2015 Share Posted October 8, 2015 As a side note: The M73 BMW v12 has also most famously been used in the replica of the Vickers Vimy that was built by Australian and American enthusiasts to retrace the three big flights by the Smith brothers in their Vimy. A M73 (5.4 litre) was used with a special gearbox on each side and turned a huge prop. These engines replaced the big block chevs that proved unsuitable. Sadly due to a lawsuit from BMW USA the plane a was grounded in Meza , Arizona. This was not a reliability issue but lawyers suing in case BMW USA was held accountable if the Vimy crashed. And a case of lawyers ruining a perfectly good aircraft. Subsequently the engines were replaced with new Orenda OE 600's to allow it to continue flying out of the USA. A sad end to a great use of the M73 as a vintage aircraft engine. Link to comment Share on other sites More sharing options...
Litespeed Posted October 8, 2015 Share Posted October 8, 2015 Link to comment Share on other sites More sharing options...
facthunter Posted October 8, 2015 Share Posted October 8, 2015 Interestingly the original RR Eagle V-12's were 20 litres capacity direct drive and about 28o- hp at around 1900 rpm. Engine TBO 200 hours. That's 14 HP/litre and plenty of torque. Would sound a little LESS BUSY than the beemer..Nev Link to comment Share on other sites More sharing options...
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