Ron Gray Posted April 15 Share Posted April 15 3 hours ago, RICHARD WILLS said: o we could also have a look at landing technique IMO this is the most important thing to look at, not over strengthening the fuselage. Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted April 15 Author Share Posted April 15 In replying to a few things : Leccy , you make some good observations about variable ground "arresting". The 190 uses the same size retract units as the Tempest , but Paul made the supporting ribs and plate with different angles included as you would expect . Chris , regarding the scoop , it isnt really as big a problem as you think . Although not as ideal as say a Spitfire , the model will fly very nose up if required so the actual speed when the model touches can be quite slow compared to others . I know you are a lightning fan and I have built about six from scratch , all belly landers . They never broke at the front , but always at the back as the low rudders grabbed something . Much worse than the Tempest . P51s have a different problem . The scoop is way back and so when they touch on the scoop the nose can dip aggressively and do some damage . Dave N, bent his X mount on the Tempest and that takes some doing . Same venue . What you need is a nice sheet of plastic , a hose and some fairy liquid . 😁 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted April 15 Author Share Posted April 15 Looking back at Dave Naylors lovely pictures , I can see that he takes off from Murat's very comfortable looking dolly . As it is suitably foam covered , could you not all simply land back on it ? It does seem that you wee Scottish Lads have grown "awkward " grass , so perhaps the fresh air up there is having an adverse effect ? I blame Heather .....🤐 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted April 15 Share Posted April 15 Richard - Dave has been experimenting with other dollies and had great success taking off with Jim's very minimalist small, lightweight dolly the other day. I offered him a go with my very lightweight one, but unfortunately the wind had swung round giving a very unfavourable take off direction directly towards the site gate and he wisely decided to leave it for another time. My take off dolly has nylon fittings rescued from the wreckage of a Wendy house, but you have to be careful not to store it fully rigged, as they are under quite a bit of tension and the nylon creeps and eventually splits. After some running repairs with tape I thought it was time to just bite the bullet and ordered up a new one from eBay, which is an Ice Cream Shop play tent. Whereas the original had 13mm plastic tube, this one looks to have 10mm plastic tube, so will be even lighter. I think I'll have enough tube and fitments to make a couple of dollies. Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted April 15 Author Share Posted April 15 1 hour ago, leccyflyer said: Richard - Dave has been experimenting with other dollies and had great success taking off with Jim's very minimalist small, lightweight dolly the other day. I offered him a go with my very lightweight one, but unfortunately the wind had swung round giving a very unfavourable take off direction directly towards the site gate and he wisely decided to leave it for another time. My take off dolly has nylon fittings rescued from the wreckage of a Wendy house, but you have to be careful not to store it fully rigged, as they are under quite a bit of tension and the nylon creeps and eventually splits. After some running repairs with tape I thought it was time to just bite the bullet and ordered up a new one from eBay, which is an Ice Cream Shop play tent. Whereas the original had 13mm plastic tube, this one looks to have 10mm plastic tube, so will be even lighter. I think I'll have enough tube and fitments to make a couple of dollies. Who would have thought you could get so much out repurposing children's play houses ? I remember visiting the site of the "V" Festival in Chelmsford a day after the event . There were enough fibreglass battens and nylon sheets abandoned to create a squadron of Zeppelins . Criminal really , but that's the new green generation for you . You seem to have the launching sorted , but what about the retrieval ? The Highland "sticky grass " seems to be quite a problem compared with our "soft southern " grass . I believe Eric Winkle Brown carried out several landings of a Vampire without undercarriage on an inflatable mattress . Its not for me to make suggestions though , so I shall probably LiLo on that one . 3 Quote Link to comment Share on other sites More sharing options...
Benny Posted April 15 Share Posted April 15 29 minutes ago, RICHARD WILLS said: My take off dolly has nylon fittings rescued from the wreckage of a Wendy house, but you have to be careful not to store it fully rigged, as they are under quite a bit of tension and the nylon creeps and eventually splits. After some running repairs with tape I thought it was time to just bite the bullet and ordered up a new one from eBay, which is an Ice Cream Shop play tent. Whereas the original had 13mm plastic tube, this one looks to have 10mm plastic tube, so will be even lighter. I think I'll have enough tube and fitments to make a couple of dollies. Who would have thought you could get so much out repurposing children's play houses ? I remember visiting the site of the "V" Festival in Chelmsford travelling by coachamerica a day after the event . There were enough fibreglass battens and nylon sheets abandoned to create a squadron of Zeppelins . Criminal really , but that's the new green generation for you . You seem to have the launching sorted , but what about the retrieval ? The Highland "sticky grass " seems to be quite a problem compared with our "soft southern " grass . I believe Eric Winkle Brown carried out several landings of a Vampire without undercarriage on an inflatable mattress . Its not for me to make suggestions though , so I shall probably LiLo on that one . I remember a similar picture after one Open Air in 2010 - hordes of forgotten chairs, on which it was possible to arrange a whole open-air movie theater. 1 Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted April 15 Share Posted April 15 1 hour ago, RICHARD WILLS said: Who would have thought you could get so much out repurposing children's play houses ? I remember visiting the site of the "V" Festival in Chelmsford a day after the event . There were enough fibreglass battens and nylon sheets abandoned to create a squadron of Zeppelins . Criminal really , but that's the new green generation for you . You seem to have the launching sorted , but what about the retrieval ? The Highland "sticky grass " seems to be quite a problem compared with our "soft southern " grass . I believe Eric Winkle Brown carried out several landings of a Vampire without undercarriage on an inflatable mattress . Its not for me to make suggestions though , so I shall probably LiLo on that one . I remember a prone pilot position on a Gloster Meteor but Eric Brown flying a Vampire on an inflatable mattress is the stuff Dream's are made of 😄 1 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted April 15 Share Posted April 15 Don't know if it was Eric WB, but there is some B&W footage of a Vampire heading along the Hatfield runway catching the arrestor wire and slamming into the "rubber" mat very abruptly! The chances of repeating the landing on a sea going vessel and the stress of stopping the aircraft in the rubber mat within just a few feet meant the idea was shelved! PS this was not the same as the rubber runway that was tried out by the way! 1 Quote Link to comment Share on other sites More sharing options...
Paul Johnson 4 Posted April 15 Share Posted April 15 Found another add on for FreeCad that might be of help here... Quote Link to comment Share on other sites More sharing options...
Wihtgar Posted Saturday at 10:38 Share Posted Saturday at 10:38 Regarding the elevator throw, would it be beneficial for me to use a reduced throw on the servo as I have not fitted mine yet? Nigel Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted Saturday at 12:02 Share Posted Saturday at 12:02 Yes, on the basis that the further back C of G means less AUW which is no bad thing. Just remember that that AUW, C of G and elevator movement are not exclusive to each other so best not do one without the others! In my experience, but happy to be proved wrong! if the C of G is forward then the model flies a bit quicker near stall (take off and landing are faster) and you need more elevator throw + it will need more elevator compensation when inverted. So as you move the C of G (reducing nose weight) then you need less elevator movement up to a point (but were are not that far back to be a problem). The point is don't reduce the elevator and have the C of G right forward or move the C of G to 95mm and have loads of elevator travel! The Tempest despite mine being a right porker has a very slow and controllable stall with the C of G at 85mm, but I'll be moving mine back and modifying the elevator as I get to take some of the church roof out of the front and Richard's & others have found no detrimental flight characteristics so win win. PS Anything with less mass tends to travel a shorter distance, be it belly landing slide or rolling on its wheels and pick up less damage in the process Hope that helps Quote Link to comment Share on other sites More sharing options...
Dave Naylor Posted Saturday at 19:24 Share Posted Saturday at 19:24 Richard asked me to say a few words as a newbie first time builder of a warbird, or indeed of anything, certainly not done anything like this since my uno wot back in 1996! I am pleased to say that the build was educational and enjoyable to do. By following the forum with build sequence by Richard plus following Ron's very good YouTube build of the Tempest made what seemed a slightly daunting task at first a straightforward and logical process. Apparently I started with the slightly more complicated build (10%harder they say) in the Tempest compared to the FW190 I am now going to order the FW190 If you're new to building a balsa plane I would say give it a go, there's plenty of help out there with the group to assist you along the way. Btw my Tempest is a delight to fly, it's so solid looking in the air, flies like on rails. Chuffed! 9 1 Quote Link to comment Share on other sites More sharing options...
stu knowles Posted Sunday at 11:55 Share Posted Sunday at 11:55 Good looking model and a good photo too. 1 Quote Link to comment Share on other sites More sharing options...
Bucksboy Posted Sunday at 13:05 Share Posted Sunday at 13:05 I took mine out today too, I had a friend use my camera to take some snaps. Alas I caused the session to be cut short by over exuberance and touched the ground and snapping an aileron horn, entirely my fault. 5 3 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted Sunday at 19:06 Author Share Posted Sunday at 19:06 Thanks for the kind words chaps . Very much appreciated . lovely pictures too . Quote Link to comment Share on other sites More sharing options...
Murat Kece 1 Posted Sunday at 21:34 Share Posted Sunday at 21:34 Aberdeen Tempest Squadron was out today.. Great flying and no breakages!! Photos courtesy of Derek Robertson. 6 1 Quote Link to comment Share on other sites More sharing options...
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