Dickw

Given Martin's comments, something like this might be suitable - small and not too expensive. https://www.flightech.co.uk/product/x08h-plus-premium-f5j-servo/ In very tight installations I have servos of this size with the lugs cut off, wrapped in tape and epoxied to the wing skin (cut tape and unwrap to remove!). With the space you have I don't think you need to go to those extremes 😀 Dick

Interesting spec. now I have looked at it. A claimed 320 amps continuous, and weighs 10gm 😁 Dick

You seem to have a lot of depth at 18mm, so could a 10mm servo on its side be slid under the wing skins a bit? Dick

I had problems at times both last night and this morning but OK at the moment, and I am on BTinternet. Problems were on both laptop - Win10/Firefox, and on my phone - Android/Chrome. The only obvious common factor seems to be the website. Dick

I don't know that model, but what value of "high torque" are you looking for and what size are the servo cutouts? My 3.7m glider I use for GPS Triangle racing has these in it https://www.hyperflight.co.uk/products.asp?code=MKS-DS6100&name=mks-ds6100-servo-3-3kg-cm-0-11s-9-5g-10mm And my 4.7m GPS Triangle racer at 6.7Kg weight uses these https://www.hyperflight.co.uk/products.asp?code=KST-X10-710&name=kst-x10-710-v8-servo-7-5kg-cm-0-09s-23-0g-10mm Lots more choices on the Hyperflight website if you have some measurememnts. Dick

Rob pm sent with postal details. Many thanks for your help. Dick

I know this is an old thread, but not sure where else to ask. Someone I know has just bought a working Fleet PCM-MX7 but there is no instruction booklet with it. Does anyone have a copy they could scan or sell (or suggest anywhere else we could ask) so he can get it flying again? Dick

I can support that post 100%. Have a look at the BMFA club finder https://bmfa.justgo.com/clubFinder.html You mentioned your location on another thread, and there are several clubs near you and and I am a member of one of them. Most clubs are happy for people to come along and watch, ask questions, and talk about models and gear even if you are not a member. You may even get a trial flight at some clubs. Dick

Just a bit of basic "electric flight" knowledge:- That motor has a kv of 2100 which means it wants to run at about 2100 rpm per volt of supply. The battery is an 11.1 volt battery. Putting the two together means that on "no load" the motor will try to run at 11.1 x 2100 = 23,310 rpm. With a prop on you should aim for around 80% of that to get a reliable operation at about 80% efficiency, so about 18,500 rpm. That is far too high an rpm for your application and would require a very small prop. With that motor go for a 2s battery, or for a 3s battery pick a motor with a lower kv - say about 1200. Dick

Many modern servos will operate at quite low voltages with torque data now being quoted at 3.8v (even for some HV servos), and in the world of Discus launch glider (DLG) flying it is quite common to use only a single Lipo cell to power the receiver and servos. The receivers don't usually have a problem on 1 cell Lipo either. Of course Lipos generally have a low IR so the volt drop on load would not be as great as for a similarly sized Ni based cell. Dick

I assume you plug it into the receiver to power the receiver and servos from the main battery. A separate BEC like that is used where you don't want to use a BEC built into an ESC, or your ESC doesn't have a BEC. Dick

For models that have a BEC I mostly use that. For models that don't have a BEC (or I don't use the BEC) I think everything I have now has 2s Lipo and HV servos. Dick

RCM&E was never the same after it moved to the big format and dropped the electronics bit 😀 Like Simon, I stopped buying model magazines about 20 years ago as I realised there was no longer anything in them that I was interested in. The free plans got thrown out with the magazine when the next issue came out. I still build from plans, but can find all I want on Outerzone where there is a bigger choice of subjects, and I usually end up modifying the plans anyway. The internet and the BMFA mag provide all the information I need to keep up to date with latest developments. Dick

I would start by looking here https://www.gov.uk/common-land-village-greens It looks like you need to talk to whoever owns or controls it, or look to see if there are any notices about its use posted nearby. You still need to be registered with the CAA as an operator and have some recognised form of competency to fly wherever you fly. Dick

If you have lost the email sent when you renewed, you can still download your membership certificate from the membership system. I just printed that out and cut my membership card out of that. Screen grab of where to find it in the membership system attached. Dick

There is a "How to use" pdf document available to download on the 4 Max website just above the selection of colours. It refers to a backing film. https://www.4-max.co.uk/covering-film-solid.html Dick

From the main page look under the "More..." menu for the 'Achievement Scheme' item. That takes you to a page where you can access and download all the Achievement Scheme information and documents. Dick

That completely changed a while ago:- (m) Complete the post flight checks as required by the BMFA safety Codes. The candidate should agree with the examiner beforehand whether they intend to take the transmitter with them when retrieving their model or choose to leave it with a competent person. The candidate must explain the safety considerations behind their decision, which must be agreed with the examiner. If the candidates elects not to take the transmitter and no one else is available to hold it then you should offer. Whatever process is agreed, it must also be in accordance with any relevant club rules, as appropriate. Generally, for 2.4GHz operations and with suitable consideration, candidates should be able to give a robust safety-based argument for taking their Tx with them to recover the model, if it has landed on the normal landing/takeoff area. Conversely, it is difficult to see how any such argument could be made for candidates using 35MHz or 27MHz equipment. Dick

There should be no problem uploading .pdf files - example attached. When I uploaded that it said the maximum total size possible was 48.83 Mb. Dick Squert_RCM-1243_oz10582.pdf

I do suggest you make an effort to find out if you plan on flying as a current registration is a legal requirement 😀 See John Lee's answer for how to check. Dick

I renewed via the BMFA and subsequently received an email from the CAA confirming renewal and valid dates. One on-line transaction via the BMFA instead of also having to also make another transaction with the CAA. Dick

The current CAA Operator ID and it's expiry date is shown on the "Member Details" page rather than on the "Membership" page. At least it is on mine. Do others not see it on there? Dick

Are you talking about the main website or the membership system? Dick

Many of the commercially available competitive glider (and other types) kits from specialist manufacturers do actually use this method of construction and variations on it. As you say, it does require complex jigs and moulding techniques so tends to be expensive and often made to order only. I have several such models, some without any balsa in them and some where balsa is used between glass or carbon cloth layers to form the upper and lower skins. Dick

Works OK on my laptop, but "file cannot be located" error message if viewed om my phone. Dick