Eric Robson Posted January 1, 2022 Share Posted January 1, 2022 That's the ones with whistles not bells. The modern ones are all bells and whistles but the don't have them fitted. Quote Link to comment Share on other sites More sharing options...
Graham R Posted January 25, 2022 Share Posted January 25, 2022 (edited) LA-7 update, Have been trying to sort out the best way of installing the flight batteries whilst keeping the airframe looking good (without too many non scale hatches). The most obvious way is to place them behind the main bulkhead in a vertical position, with just enough room for a 4s 3300 pack. only problem is stopping them falling out. My solution :- Battery inserted through small hatch on bottom of cowl. Edited January 25, 2022 by Graham R 5 Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted January 26, 2022 Share Posted January 26, 2022 14 hours ago, Graham R said: LA-7 update, Have been trying to sort out the best way of installing the flight batteries whilst keeping the airframe looking good (without too many non scale hatches). The most obvious way is to place them behind the main bulkhead in a vertical position, with just enough room for a 4s 3300 pack. only problem is stopping them falling out. My solution :- Battery inserted through small hatch on bottom of cowl. As long as there is no possibility of the lipo falling out with vigorous flying you should be ok. PS WOT WOT's have a design flaw where the lipo can fall out after a stall turn...need to ask how I know ? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted January 26, 2022 Share Posted January 26, 2022 (edited) Can't you extend the 3D printed batt holder back to F2 to give it support from both F1 and F2? I would also be inclined to have 2, rather than 1 screw fixings. Just some thoughts! Edited January 26, 2022 by Ron Gray 1 Quote Link to comment Share on other sites More sharing options...
Bruce Collinson Posted January 26, 2022 Share Posted January 26, 2022 Neat solution. Some foam padding? BTC 1 Quote Link to comment Share on other sites More sharing options...
Graham R Posted January 26, 2022 Share Posted January 26, 2022 (edited) Hi Ron,I didn't give it a thought, It would add a bit of insurance against it falling out. Do you still have the .STL file you did for the tailwheel on the LA-7? Chris, How did you modify your wots wot.I have just relied on the original fittings on mine. Edited January 26, 2022 by Graham R Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted January 27, 2022 Share Posted January 27, 2022 17 hours ago, Chris Walby said: PS WOT WOT's have a design flaw where the lipo can fall out after a stall turn...need to ask how I know ? The leccy Wots Wot? Quote Link to comment Share on other sites More sharing options...
Graham R Posted January 27, 2022 Share Posted January 27, 2022 GG yes Quote Link to comment Share on other sites More sharing options...
Chris Walby Posted January 27, 2022 Share Posted January 27, 2022 Off topic, but to answer the WOTs WOT question, I made one of these. It drops in the lipo tray keyhole and stops the tray sliding, just means you don't have to wind the Nylon screw super tight and once in and screw nipped there is no chance the tray can slide! PS normally inserted the other way around unless you are in Australia ? 1 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted January 27, 2022 Share Posted January 27, 2022 Quite right Chris . I believe that even their wing bolts have a reverse thread . Kylie Minogue once told me, that if she gets in a spin ,it is always anti clockwise . I can only assume that the Antipodean Wot 4 has a similar characteristic . Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted January 27, 2022 Share Posted January 27, 2022 17 hours ago, Graham R said: Do you still have the .STL file you did for the tailwheel on the LA-7? I'm sure that I do, I'll have a look for you. Quote Link to comment Share on other sites More sharing options...
Graham Davies 3 Posted January 27, 2022 Share Posted January 27, 2022 48 minutes ago, RICHARD WILLS said: Quite right Chris . I believe that even their wing bolts have a reverse thread . Kylie Minogue once told me, that if she gets in a spin ,it is always anti clockwise . I can only assume that the Antipodean Wot 4 has a similar characteristic . The problem here Richard, as I'm sure you've spotted, is that when Ms Minogue is spinning around and demanding we get out of her way, it is not clear which way we should go to avoid a nasty and somewhat unseemly collision. Indeed, when this last happened, I had to try dozens of times before I managed to get in such a tangle... Quote Link to comment Share on other sites More sharing options...
Graham R Posted January 27, 2022 Share Posted January 27, 2022 Thanks Ron? Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted January 28, 2022 Share Posted January 28, 2022 17 hours ago, Chris Walby said: Off topic, but to answer the WOTs WOT question, I made one of these. It drops in the lipo tray keyhole and stops the tray sliding, just means you don't have to wind the Nylon screw super tight and once in and screw nipped there is no chance the tray can slide! PS normally inserted the other way around unless you are in Australia ? Ah, my bad, I guess you're talking about the 'proper' wood version. I only have the foam version which has no issues. Apart from getting really grubby 'cos it's white foam. Quote Link to comment Share on other sites More sharing options...
Silver Wolf Posted February 1, 2022 Share Posted February 1, 2022 Finally getting around to making a start. Proposed engine and tank position. Looks like a new F2 required to allow for fuel tank Quote Link to comment Share on other sites More sharing options...
gillyg1 Posted February 1, 2022 Share Posted February 1, 2022 Nice choice of engine SW, laser 80 me thinks ?, thats going to be my choice, when i finally get around to it. Finishing off the 110, at the spraying stage ?, 2x rcv 58 cd's . Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted February 1, 2022 Share Posted February 1, 2022 I have fitted a Saito 82 in my Hurricane, the advantage is the carb is higher so the tank can sit on top of the wing. Disadvantage is the light weight compared with a Laser so I will have to add lead. 1 Quote Link to comment Share on other sites More sharing options...
Andy Gates Posted February 1, 2022 Share Posted February 1, 2022 Silver Wolf, Can you not fit a smaller tank at the correct height and then a bigger tank further up and behind in the same fashion as a fuel helicopter set up? It would save hacking / modifying F2 too much. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted February 2, 2022 Share Posted February 2, 2022 Chicken hopper fuel tank arrangements will work! Quote Link to comment Share on other sites More sharing options...
Jon H Posted February 2, 2022 Share Posted February 2, 2022 (edited) 9 hours ago, Andy Gates said: Silver Wolf, Can you not fit a smaller tank at the correct height and then a bigger tank further up and behind in the same fashion as a fuel helicopter set up? It would save hacking / modifying F2 too much. Not unless you pressure isolate the lower tank from the top tank's head pressure. You end up needing tanks with 4 or 5 pipes on them so while it can work it is a hassle. Much easier to lower the tank. looking at your photo further up your tank is massive, you really dont need one that big. IT looks like about 12oz? Anyway i will find the photos of my setup and post them in a bit. I dont think i have all the pictures on this machine. Eric, my Hurricane needed a good bit of lead even with a slightly longer nose and a laser 80. Its standard for a warbird and not an issue. I recommend you make a horse shoe shaped piece and wrap it round the front of the engine supported by something coming off the engine mount. I used thin steel strip and hammered captive nuts into the lead. Thread locked together its not come loose since i built the model. Edited February 2, 2022 by Jon - Laser Engines Quote Link to comment Share on other sites More sharing options...
Jon H Posted February 2, 2022 Share Posted February 2, 2022 The forum saved them ? Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted February 2, 2022 Share Posted February 2, 2022 Hi John, I've been building warbirds for many years now and yes they nearly all need lead, even the B. Taylor Warhawk but that was in the tail. The Saito 82 FS is 200 grams lighter than the Laser 80 and I don't know about a horse shoe of lead this one needed the horse attached to the shoe. any way I have used my stock of lead up so I have used 560g of 12mmsq brass bar and it now balances. Quote Link to comment Share on other sites More sharing options...
Silver Wolf Posted February 2, 2022 Share Posted February 2, 2022 Thanks for the advice chaps and the photos Jon. Multi tanks would work, although seems to complicate what should be a rather quick & simple model. Proposed tank is "Du-Bro 8oz" height 49mm could go a Slec 6oz which as a height of 47mm. If tank is raised by 10mm this will put centre line of tank 5mm above centre of carb. Had thought about putting some carbon tissue (deluxe materials) or carbon tows on bottom section of new F2. Regards SW Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted February 2, 2022 Share Posted February 2, 2022 Jon, I have a similar amount on the other side, I would have preferred it further forward but it does not form as well as lead. Quote Link to comment Share on other sites More sharing options...
gillyg1 Posted February 2, 2022 Share Posted February 2, 2022 Guys - i have a laser 80 fitted in a VQ fw190, and yes the tank ( slec - yellow) is at the fitted height, so the c/l of the tank is way above where it should be, ( in line with the carb) and the only draw back being fuel leaks out the carb when tank is full. Don't have another problems, and runs sweet, as a sewing machine. But i do have a pressure nipple fitted to the exhaust, Don't know if this makes a difference ? And i'm quite happy with this set up.. So you loose a few drops of fuel prior to starting. Just my thoughts / input.? Quote Link to comment Share on other sites More sharing options...
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