Gary Vinten 1 Posted March 26, 2014 Share Posted March 26, 2014 iam now starting on a cap 21 free plan in the rcm@e august 2007 This is a peter Miller model for ic 32 ,i will be converting it to electric power but the rest will stay the same as per plan Quote Link to comment Share on other sites More sharing options...
john stones 1 - Moderator Posted March 27, 2014 Share Posted March 27, 2014 good luck with it Gary lets be seeing a few picy's Quote Link to comment Share on other sites More sharing options...
Vecchio Austriaco Posted March 27, 2014 Share Posted March 27, 2014 will look with interest. Be so kind and make a nice and detailed build blog VA Quote Link to comment Share on other sites More sharing options...
ben goodfellow 1 Posted March 27, 2014 Share Posted March 27, 2014 gary. been giving it a look over too,, intended to start it monday night , then tues , then weds , but def will get a start shortly..... looks nice . alittle bit different...fly low Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted March 27, 2014 Share Posted March 27, 2014 I shall watch with interest. Still one of my favourites Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 OK this is the rcm@e cover Quote Link to comment Share on other sites More sharing options...
ben goodfellow 1 Posted March 27, 2014 Share Posted March 27, 2014 sorry i got wrong plan .same (ish) plane though cap from last month..thread hijack over............ Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 OK Ben nice to see you lol !!!!!!!! Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 This is the electric motor from hobbyking i have used this be for on the swamp rat they are a very cheap motor and very robust on a 4s it will give 850 watts at 45 amps Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 front view looking at the drawing i will have to extend the fire wall Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 The esc is from hobbyking auto set up set as seen on plan i will make sure i have some cooling in that area Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted March 27, 2014 Author Share Posted March 27, 2014 Just for you ben i will be building the cap 20l from the March 2014 rcm@e mag using the same set up and the same finishing Quote Link to comment Share on other sites More sharing options...
ben goodfellow 1 Posted March 27, 2014 Share Posted March 27, 2014 ok. by the looks of things your a far better builder than me ,soooooooo when you do the 20l you may be getting a few questions if i aint donemine by then.. Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted April 7, 2014 Author Share Posted April 7, 2014 Ben have you started your cap yet Quote Link to comment Share on other sites More sharing options...
Jimbo565 Posted April 7, 2014 Share Posted April 7, 2014 Gary This is Peter's Cap 21,free plan,it was so good and it flew a treat so I scaled it up to 60" with a 61 up front and it flew just as well. I know you are doing the 20l but they are much the same so you wont be disappointed with the result, good luck with the build. Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted April 7, 2014 Author Share Posted April 7, 2014 Hi Jim Very nice iam doing the 21 first and then the 20l Quote Link to comment Share on other sites More sharing options...
Jimbo565 Posted April 7, 2014 Share Posted April 7, 2014 Gary make sure you do a scale colour scheme,Pete never spoke to me for 2 days when he saw my schemes. Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted April 13, 2014 Author Share Posted April 13, 2014 Hi All Update on the CAP 21 I have started on the wing construction as seen below This is not a one peace wing it is left and right side i had the plan copied and the wing section reversed a lot better than trying to build one wing on the other need to visit lms for some ply to finish off Doing the wing construction this way is a lot quicker and much more accurate and only cost £1 for the copy Quote Link to comment Share on other sites More sharing options...
ben goodfellow 1 Posted April 13, 2014 Share Posted April 13, 2014 gary sorry for the late reply. i have been busy wrestling with my hedge in the garden and building a park for the kids . i have managed to get all the major parts cut and ive got some of the port wing done . ive time of this week so am hoping to get some done, ill post you some pics when ive got something worth seeing , fly low Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted April 13, 2014 Author Share Posted April 13, 2014 OK Ben Look forward to it Quote Link to comment Share on other sites More sharing options...
Pete B Posted April 13, 2014 Share Posted April 13, 2014 I'd be inclined to use a separate 3A or preferably 5A UBEC with that ESC, Gary - the 2A output from the ESC just doesn't inspire confidence in me.... Pete Quote Link to comment Share on other sites More sharing options...
Bill_B Posted April 13, 2014 Share Posted April 13, 2014 IMHO a 2A BEC will be more than enough for 4 standard servos under normal operation with a 3s LiPo. I think the only time you might see a full 2A drawn is if all 4 of those servos are stalled at the same time, which shouldn't ever happen in flight. Maybe in crash scenario though? However, if a 4s LiPo is being used then I would recommend the use of a UBEC. Quote Link to comment Share on other sites More sharing options...
Pete B Posted April 13, 2014 Share Posted April 13, 2014 Perhaps I'm overly cautious, Bill, but it's paid off for me so far. I agree that 2A is unlikely to be drawn, all being well, but being a linear BEC, and on 4S, it will be working hard and producing heat. If the motor is propped to draw near the 50A ESC limit, there'll be some heat there too. I think overworking ESC/BECs is probably one of the commonest 'radio glitches' in leccy flight.... For the sake of less than a fiver for something like this, I don't think it's worth taking the chance Pete Quote Link to comment Share on other sites More sharing options...
Gary Vinten 1 Posted April 14, 2014 Author Share Posted April 14, 2014 Hi Pete Thanks for the info I was going to fly on 3 s but now iam switching to 4s you are iChat I will nee to have no less than 3A so will have to look at a new esc as a ubec might be hard to fit in Regar Gary Quote Link to comment Share on other sites More sharing options...
Masher Posted April 14, 2014 Share Posted April 14, 2014 Bill_B Whilst I agree with your statement, the capacity needs to be high enough to handle peak current draw - this will vary and for very short periods the servos may pull higher currents. Depending on the design of the BEC it may or may not be able to supply momentary higher currents so I too would go for the 3A option Obviously a NiMH or similar pack can supply very high instantaneous current bursts but a BEC may not Edited By Masher on 14/04/2014 08:05:26 Quote Link to comment Share on other sites More sharing options...
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