Ron Gray Posted April 21 Author Share Posted April 21 3 hours ago, Paul Johnson 4 said: Are we really talking planes here? Take your pick, I’ve got both. Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted April 21 Share Posted April 21 Rain stopped play today, so moved onto motor tests for the FW190, three motors (AXI 2826/12, AXI 2826/10 and Thumper T4240/10 with multiple props to test, around 11x7" - 12"x8", including making up some adapters to allow mixing the 3.5mm and 4mm bullets which are fitted to the various motors. Tried three different battery packs too, some older G-Power 4s1p 4200mah, standard HRB 4s1p 3300mah and my newer Zee Power 4s1p 3300mah- the latter working out slightly better. If I find I need more weight to balance there is always the option of the HRB 4s1p 4000mah packs, which are meant for my P-38 Lightning and so still have their horrible XT60 connectors. Results were good, giving an informed choice between 500-600w in, with current draw at WOT between 34 and 45 amps, which I guess will rarely be needed and that equates to an estimated 130-150w/lb, if the model comes out around 4lbs AUW.. 2 Quote Link to comment Share on other sites More sharing options...
Lipo Man Posted April 21 Share Posted April 21 58 minutes ago, leccyflyer said: Rain stopped play today, so moved onto motor tests for the FW190, three motors (AXI 2826/12, AXI 2826/10 and Thumper T4240/10 with multiple props to test, around 11x7" - 12"x8", including making up some adapters to allow mixing the 3.5mm and 4mm bullets which are fitted to the various motors. Tried three different battery packs too, some older G-Power 4s1p 4200mah, standard HRB 4s1p 3300mah and my newer Zee Power 4s1p 3300mah- the latter working out slightly better. If I find I need more weight to balance there is always the option of the HRB 4s1p 4000mah packs, which are meant for my P-38 Lightning and so still have their horrible XT60 connectors. Results were good, giving an informed choice between 500-600w in, with current draw at WOT between 34 and 45 amps, which I guess will rarely be needed and that equates to an estimated 130-150w/lb, if the model comes out around 4lbs AUW.. For reference I’m getting six minutes of scale type flying from a 2200Mah 4s so you’ll have plenty of flight time on those batteries! (Motor is a generic 4250 size can 800kv and a 12x8 APC prop). 2 Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted Tuesday at 06:17 Author Share Posted Tuesday at 06:17 Here's another one! Clubmate Steve had never built a model before so this is his first attempt, personally I think that he did fine job. He asked me to maiden it and after adding some nose weight (he was using a 2200 mAh 4s battery) it was ready to go. 6 Quote Link to comment Share on other sites More sharing options...
GrumpyGnome Posted Tuesday at 06:21 Share Posted Tuesday at 06:21 Good job! Quote Link to comment Share on other sites More sharing options...
Lipo Man Posted Tuesday at 08:05 Share Posted Tuesday at 08:05 1 hour ago, Ron Gray said: Here's another one! Clubmate Steve had never built a model before so this is his first attempt, personally I think that he did fine job. He asked me to maiden it and after adding some nose weight (he was using a 2200 mAh 4s battery) it was ready to go. Please accept cookies to access this content Looks like another excellent flier. There’s a trend emerging here… Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted Thursday at 05:55 Share Posted Thursday at 05:55 Quick question as I'm lining up the motor mount - did anyone else need to trim the ally spinner to fit an APC-E prop in there? The spinner cut outs don't seem anywhere near deep enough to get an APC-E 12" x 8" in there without making them larger in both pieces. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted Thursday at 06:45 Author Share Posted Thursday at 06:45 Put a couple of washers in there Brian, a lot less faff than cutting! 1 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted Thursday at 07:08 Share Posted Thursday at 07:08 (edited) On 19/04/2024 at 17:41, Lipo Man said: I didnt use an Apc for that reason . I think mines got a Radio Active 12x6 or similar . Conventional shaped props look better and require less enlargement of the spinner prop slots . Edited Thursday at 07:08 by RICHARD WILLS 1 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted Thursday at 07:28 Share Posted Thursday at 07:28 Aye - I know that the APC-Es are more efficient but that crazy blade shaping at the hub is a real pain in so many situations. Unfortunately I don't think I've got any other 12x8" in stock, so it'll have to be the washers - I've got some ply ones, with cut outs for those horrible APC blade roots. Quote Link to comment Share on other sites More sharing options...
Eric Robson Posted Thursday at 07:33 Share Posted Thursday at 07:33 I just used 2 8mm steel washers Brian. 2 Quote Link to comment Share on other sites More sharing options...
DaveB1 Posted Thursday at 16:06 Share Posted Thursday at 16:06 My motor's prop adaptor shaft wasn't long enough for wasbers so I trimmed the spinner backplate (quite a lot) with various dremel bits and files to allow an APC to fit - but the result works ok 1 Quote Link to comment Share on other sites More sharing options...
RICHARD WILLS Posted Thursday at 16:13 Share Posted Thursday at 16:13 Ive been using the Graupner nylon (Super Nylon Propeller 2042) available from Sussex models and other shops for £4.55 Not a weird shape and seems to work well enough . 1 Quote Link to comment Share on other sites More sharing options...
leccyflyer Posted Thursday at 16:21 Share Posted Thursday at 16:21 Yes, I quite like those Graupner Super Nylon props, but I did find a 12x8" Master Airscrew Electric prop in my drawer and those are not too bad at all - the 13x8" that I use on my PT-19 works really well, nothing like a Master Airscrew IC prop. Anyway, I can make the APC-E work with a couple of chunky washers and so I've now committed the motor mount to being glued in place, now drying overnight. Any further adjustment will need to be achieved with the use of washers. 1 Quote Link to comment Share on other sites More sharing options...
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