Jonathan Lewzey
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Everything posted by Jonathan Lewzey
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Brushless replacement for a "380" brushed motor
Jonathan Lewzey replied to Tony Smith 7's topic in Power System Selection
there's always the option of a folding prop on an electric glider if you're worried about landings. I wouldn't be though, i've belly landed my p-40 with a prop that protrudes past the air intake and never broken a prop in probably 50+ flights. Thats using a cloned APC, APS's themselves are a bit more fragile apparently although i don't think i've ever broken one. GWS's are a bit more flexible so might be worth fitting. Main thing is to land slow with no power, that shouldn't be a problem with an electric glider. Up to you though, there is definite logic in the inrunner as it should be mechanically simpler (would be good to see a picture of the setup and motor mounting at the moment), but duration will probably be lower and an inrunner and higher amps ESC will probably cost more than an equivalent quality outrunner. -
Brushless replacement for a "380" brushed motor
Jonathan Lewzey replied to Tony Smith 7's topic in Power System Selection
Posted by Romeo Whisky on 03/06/2010 15:49:46: You don't say if the 350 motor has a geared drive to the prop or direct, but surely the most obvious replacement is a can inrunner of about 2100kv. (See Giant Cod or 4-Max websites) It would be a dead easy straight swap. Don't forget you'll need a brushless speed controller though. inrunner will be an easier swap, but outrunners are more efficent by driving larger props so will give longer flight times. However, both will work depends on the dimensions and motor mounting method at the moment. -
Brushless replacement for a "380" brushed motor
Jonathan Lewzey replied to Tony Smith 7's topic in Power System Selection
this would do for example with 3s about 1300mAh, 9" prop and 18-20A ESC -
Brushless replacement for a "380" brushed motor
Jonathan Lewzey replied to Tony Smith 7's topic in Power System Selection
glider will work better with an outrunner which needs a bigger prop. 650g is about 1.4lbs so go for a 150W outrunner, should be esay to find at BRC, hobbyking, RCM etc etc etc. lipo, esc and prop will all (or should all) be suggested in the specs of the motor which is really your starting point. kV not too high, not too low, roughly 1500 for this kind of size motor. -
The 2010 Photographic Competition
Jonathan Lewzey replied to David Ashby - Moderator's topic in All Things Model Flying
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if you want to improve: SIMULATOR SIMULATOR SIMULATOR! full size pilots do it to train and practice, so so should we. if you've done a maneouvre 100 times on the sim before trying it for real, you won't get stick inputs or orientation wrong and shouldn't crash. my estimated reduction of chance of crash: 90% another thing, discipline your flying so everything is in a plane or pre-visualised pattern, do not blindly fly aerobatics one after another, plan ahead as you fly. and of course, make sure all your models and equipment are in tip top condition
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thanks birdy, was freshly mown when we got there its a towerpro motor (i think ) got it from RCM direct ages ago, this is its most recent airframe can't remember the number, but there's load better now. About 80W. 10A ESC, 540 3s lipo (himodel), GWS 4ch micro rx, 3x SG50 servos, nothing special really. could build it lighter with today's equipment, AUW is looking at around 240g (wasn't completely finished - hatches to do)
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my dad i was flying. shall i enter them in the photo comp under his name then? i was going to enter a couple of the best ones. i designed and airbrushed the scheme with a cheap airbrush and createx acrylics oh, and the camera is my new fuji S1500 which i am very pleased with
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Hyperion Edge 540t 25e
Jonathan Lewzey replied to Jonathan Lewzey's topic in Build Blogs and Kit Reviews
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