Topics in Category: Understanding Electronics .... From step one.

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Replies: 6
Eric's Avatar
Topic started 28 Feb 2018 19:18 by Eric
Following on from a remark in the last BMFA rag, I was asked by my local club to put together an explanation of how to put a UBEC into an electric model. A UBEC is also applicable to some i/c models, where the owner wants to use a 2 cell lipo to power the radio, rather than the usual nimh packs....
Eric's Avatar
Last Post by Eric 01 Mar 2018 12:25
I drew it as a single wire, Klippy, to keep the thing simple! I assumed that everyone else would assume that the cable to the rx was the three-core! - Anyway - my order finally turned up, so I've put one together, patch-lead style. I've deliberately not shrunk the neg insulator - or covered the...
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Replies: 4
sydc's Avatar
Topic started 21 Apr 2014 21:37 by sydc
If you are looking to source electronic components for that small project and do not want to pay the exorbitant prices of the main high street retailers then check this website for your small electronic component orders;
one tenor's Avatar
Last Post by one tenor 14 May 2015 01:20
This shop is brilliant Component 1 Llwyn Bleddyn Llanllechlid, Bangor LL57 3EF Phone01248 719353
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Replies: 22
Topic started 29 Nov 2013 11:30 by THE BLACKBIRD
Talking to a man this morning in the model shop and he has flown in a lot of championships all over the world, and the subject of me loseing contact came up He asked where do you point the aerial on the transmitter and what radio do i use, i told him Futaba now and JR before that and the aerial...
Dean M's Avatar
Last Post by Dean M 06 Dec 2013 09:29
That seems to make perfect sense to me BB, also in my little mind if you had the ariel pointing straight up but 45degrees towards yourself, basically 180degrees to how your saying BB, it would only have poor signal directly behind your head.
Cpl Jones's Avatar
Topic started 21 Nov 2013 23:12 by Cpl Jones
Here's one I only came across recently............. that when setting up an electric brushless twin, to take out the positive wire on the receiver cable... what's that all about then??? I've got 3 electric twins... and there's my FPV quad... none of them have been set up this way... however, these...
Klipkopwildlife's Avatar
Last Post by Klipkopwildlife 23 Nov 2013 17:35
The way I see it Simon, the linear BEC supplies a continuous regulated voltage, about 5volts. When you have 2 or more in parallel the BEC having the highest voltage will tend to supply the most current, but it will not feed back through the output stage of the other BECs. The output stage will get...
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Replies: 3
Mossie's Avatar
Topic started 13 Jun 2013 10:30 by Mossie
Avionic gremlins When we talk about avionics in an aircraft we are talking about all the electrics that is situated in the fuselage and the wings. [attachment] The avionics will vary depending on the aircraft, Some aircraft will have the basics i.e. ailerons, elevator, rudder throttle so...
The Beard's Avatar
Last Post by The Beard 14 Jun 2013 01:37
Easily done I try and ensure my wires arent crossed :unsure:
Views: 2492
Replies: 43
Rozza2013's Avatar
Topic started 16 Jan 2013 18:12 by Rozza2013
Hi All, I have been busy reading up as much as I can on the various Cessna 150 conversions. 60cm wingspan (dont really want to modify the plans) I have started building my own but I have also been trying to wade through the vast amount of products out there to find the right equipment I need. I...
Quorneng's Avatar
Last Post by Quorneng 18 Jan 2013 23:08
Hi Rozza Its a nice idea to put RC gear and a motor into a small rubber power plane but it is not easy and requires exactly the right balance of power and weight to stand any chance of success. The smaller the plane the narrower that 'zone of success' becomes and the harder they are to fly too. So...
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Replies: 52
Dean M's Avatar
Topic started 11 Dec 2012 23:45 by Dean M
Hello can any electric experts help? Just having a look at the motor set up for my TN B-17 just wanted to make sure I am correct. My plan is to use 2 lipos one for the inboard motors and one for outboards. is this ok? Being 72" thought lipo for each motor may be a bit tight and heavy? The model...
Klipkopwildlife's Avatar
Last Post by Klipkopwildlife 03 Jan 2013 01:18
110% in short bursts is not going to wreck the motor, and may be useful in times of dire need!:)
Views: 3371
Replies: 17
Dean M's Avatar
Topic started 07 Nov 2011 23:06 by Dean M
Hi all, At the minute i fly just i.c but i was wondering about having a go at an electric model or two, I have read many things on the internet about lipos, esc and motors but i find it all so confusing :S :unsure: First off I have got a GT Power V5 charger that I use to charge my Rx battries...
Sangoma's Avatar
Last Post by Sangoma 08 Jul 2012 18:00
If you wanted the same flight time using one battery as you would using two, then it would need to be twice the capacity. But each of the two motors is only using half (roughly) the power that one single battery would be using. The only time you would need to use two batteries would be if you...
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Replies: 25
Polyphilla's Avatar
Topic started 22 Oct 2011 21:47 by Polyphilla
A lot of people have given their feedback on another thread in this category & it's no surprise to me that as soon as some peeps see maths symbols or formula, they go blind & lose interest. It's an unfortunate thing that peeps think of maths as a problem .... take it one step at a time & it becomes...
The Beard's Avatar
Last Post by The Beard 01 Jul 2012 17:17
Well he does cos noone else talks to him.
Views: 4260
Replies: 38
Polyphilla's Avatar
Topic started 29 Sep 2011 06:15 by Polyphilla
I've decided to teach leccy thingies with a bit of humour so I'll start it here. Imagine you're in hospital, you're bursting for a pee & the pressure is building (That's the voltage) You've been very ill & have a catheter tube fitted to the end of your plonker. You'll look at that tube & think...
admin's Avatar
Last Post by admin 29 Feb 2012 05:26
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