dogsbody Posted December 25, 2013 Share Posted December 25, 2013 Sprue, the drawing came from this 1981 magazine. Link to comment Share on other sites More sharing options...
dogsbody Posted December 25, 2013 Share Posted December 25, 2013 I scanned a larger version the the engine front view. Chris 2 Link to comment Share on other sites More sharing options...
Rabbit Leader Posted December 25, 2013 Share Posted December 25, 2013 Chris, that's more like it, I thought it was just my eyes. PM to be sent.. Cheers.. Dave 1 Link to comment Share on other sites More sharing options...
sprue Posted December 26, 2013 Share Posted December 26, 2013 Hi Chris Thanks for the info regarding the magazine. Were there any other drawings that might help and does anybody know of a source for Al Grangers plans? Thanks again Chris. Mike Link to comment Share on other sites More sharing options...
woody37 Posted December 26, 2013 Share Posted December 26, 2013 As far as I'm aware, they are offset at an angle, so I'd question this drawing for accuracy. Here's a picture of them on a Halifax, not a great photo, but indeed at an angle. If I still had the CMR instructions for the B.II, I'd scan these as they confirm this IIRC http://www.williammaloney.com/Aviation/RCAFRoyalCanadianAirForceMuseum/HandleyPageHalifax/images/06BristolHerculesXVIRadialEngine.jpg As the engine is a power egg, which includes the exhaust arrangement I'd be very surprised if they differ from aircraft to aircraft. Link to comment Share on other sites More sharing options...
Wez Posted December 26, 2013 Share Posted December 26, 2013 As the engine is a power egg, which includes the exhaust arrangement I'd be very surprised if they differ from aircraft to aircraft. Even though the engine is a power-egg it could still be dressed port or starboard so some of the hoses, cables and accessories would be adjusted accordingly (it's a real PITA if you get an ECU dressed for the opposite side on which you need to fit it - you're better off getting an undressed engine). Smutty comments regarding undressed engines will be entertained! Wez Link to comment Share on other sites More sharing options...
occa Posted December 26, 2013 Share Posted December 26, 2013 (edited) As far as I'm aware, they are offset at an angle, so I'd question this drawing for accuracy. Here's a picture of them on a Halifax, not a great photo, but indeed at an angle. If I still had the CMR instructions for the B.II, I'd scan these as they confirm this IIRC http://www.williammaloney.com/Aviation/RCAFRoyalCanadianAirForceMuseum/HandleyPageHalifax/images/06BristolHerculesXVIRadialEngine.jpg As the engine is a power egg, which includes the exhaust arrangement I'd be very surprised if they differ from aircraft to aircraft. Judging from the seemingly right angles the three visible ones form there must be actually four stays on that engine Edited December 26, 2013 by occa Link to comment Share on other sites More sharing options...
sprue Posted December 26, 2013 Share Posted December 26, 2013 (edited) Just to add to the discussion here’s part of a drawing from the excellent Beaufighter Data File by Richard A Franks showing the 4 point stay arrangement for the Hercules power egg fitted to Beaufighters. Study of wartime photographs seems to show this arrangement to be the usual found on Beaufighters but Lancaster BIIs seem to be a different story. Mike Edited December 26, 2013 by sprue Link to comment Share on other sites More sharing options...
brewerjerry Posted December 26, 2013 Share Posted December 26, 2013 Hi the lanc II had two types of hercules fitted one type was the VI the other other herc was a type XVI maybe three stays for the VI four stays for the XVI cheers jerry Link to comment Share on other sites More sharing options...
Greenshirt Posted December 26, 2013 Share Posted December 26, 2013 Thanks for the clearer drawings. This is one of those details that will cause me to wait to build my B II. I know that if I build it I'll get it wrong and within a few hours of completion will find out what is correct, meaning I'll always look at it wanting to correct it. Nobody else in my club is even interested in the B II so I'll be the only one to know, but I will know...(heavy sigh) But it is a great kit and I am looking forward to building it! Tim Link to comment Share on other sites More sharing options...
brewerjerry Posted December 27, 2013 Share Posted December 27, 2013 HI found this link on the hyperscale review of the airfix lanc kit http://www.clubhyper.com/reference/images/beau21nacellebg_2.jpg from the photo it shows that the support bars could be fitted almost any angle from the engine to the cowling so either a three or four support bar option is possible. the engine is in a late mark beau ...... so a hercules XVI ? http://www.hyperscale.com/2013/reviews/kits/airfixa08001reviewmd_1.htm the engine photo at the upper part of the article shows only three possible points for the cowling bars the hercules VI ? So to me .... it appears you need to know what mark hercules engine was fitted to your lanc to build it cheers Jerry Link to comment Share on other sites More sharing options...
woody37 Posted December 27, 2013 Share Posted December 27, 2013 Judging from the seemingly right angles the three visible ones form there must be actually four stays on that engine This model replicates the arrangement well. I know it's not a real aircraft, but pictures I've seen of Hercules layouts agree with this (best image I can find for good reference. Notice the irregular looking layout with two being at nearly right angles to each other. Great inspiration for any Stirling builder too http://sas.raf38group.org/forum/viewtopic.php?f=7&t=259 Link to comment Share on other sites More sharing options...
sprue Posted December 27, 2013 Share Posted December 27, 2013 I'm afraid I'm still stumped over the stay arrangements, photographs of Beaufighters show that the 4 stay arrangement is apparent across all marks irrespective of Hercules variant. Therefore I'm thinking that the reason is probably more to do with aerodynamics and airflow buffeting as clearly the Beaufighter was a faster machine than either the Stirling or Lancaster BII and so the engineering requirements differed with aircraft type. I'm going to plump for the 3 stay tripod arrangement in the absence of any definite photographic contrary evidence, doubtless others will have a different view but I for one will not be telling them they are wrong. Mike Link to comment Share on other sites More sharing options...
brewerjerry Posted December 27, 2013 Share Posted December 27, 2013 HI For info max permissable speed for a Lanc II 360mph, for a Beau 400mph, ( both figures from the pilots manuals [A.P. pn] for hercules engined a/c ) cheers Jerry Link to comment Share on other sites More sharing options...
occa Posted December 28, 2013 Share Posted December 28, 2013 (edited) This model replicates the arrangement well. I know it's not a real aircraft, but pictures I've seen of Hercules layouts agree with this (best image I can find for good reference. Notice the irregular looking layout with two being at nearly right angles to each other. Great inspiration for any Stirling builder too http://sas.raf38group.org/forum/viewtopic.php?f=7&t=259 That build is way beyond my skills, incredible !! To my eye it looks like I even see a fourth stay on that photo you posted on page 9 ... approximately at the 11 o clock position. But I do not have enough knowledge of Hercules engines so that could always be something else. http://www.williammaloney.com/Aviation/RCAFRoyalCanadianAirForceMuseum/HandleyPageHalifax/images/06BristolHerculesXVIRadialEngine.jpg Edited December 28, 2013 by occa Link to comment Share on other sites More sharing options...
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