Here is a list of all the postings Engine Doctor has made in our forums. Click on a thread name to jump to the thread.
|Thread: Capiche 50|
Try giving them a call on 01795-521020 or 01795-521030
Alan and June may be away hence no reply but James will be able to up-date you on availability.
They list a 52 here
Edited By Engine Doctor on 25/01/2020 17:58:48
|Thread: Bmfa new set up|
No need for a war and peace sized discussion with all the associated what if's , could be's and other Chinese whispers. Give Andy Symons a call or email and get a proper explanation
|Thread: Stuck piston ring|
As suggested an "Italian tune up" may do the trick also as said "If its not rusty "
If engine has been stored for a long period and there's a chance it may be rusty then running it with a stuck piston ring may do damage to the liner.
|Thread: Synthetic instead of caster oil?|
Let's get back to the O/P and answer the question for John .
No problem changing John . With model engines as so much fuel goes through them that any residue will be flushed out provided it hasn't been in storage for ages and set like varnish. If your engines are old / vintage engines then continue to use castor based fuel with a high castor content . This is preferred as old engines generally have poorer working tolerances and were often made from poorer quality materials needing higher oil content and higher viscosity oil ,hence Castor oil was used. Modern engines are a different breed , generate more power hence more heat ancestor oil simply turns to varnish and causes engine damage at worst . At the least it will bake onto the external cases and you shiny new engine ends up looking like a chip pan !
Model diesel engines use castor based fuel as they generally have a cast iron piston and steel liner and the quantity of fuel/ oil that passes through them protects the moving parts well and the rescue from the paraffin keeps the castor from baking on and is easily wiped away. Cox engines are similar having steel liners and pistons and run ell on any decent castor based fuel.
There are exceptions and a few diesel use ABC piston liner technology so I'll probably benefit from synthetic based fuel.
Modern synthetic oil is extremely good . I have used it in all types of engine including YS and it's brilliant.
So modern engines use modern ( synthetic) fuel .
|Thread: 7 Day challenge Nigel Hawes 30" Tucano...............|
Ita great little plane . I was given the very first production kit that Nigel Hawes made by a friend who bought it years ago and gave it to me shortly after . It sat in my loft for some time before I built it it was originally powered by a Cox TeeDee 051 but changed it to electric as I constantly had problems with engine runs The old brushed motors had been replaced by brushless by the time I had removed the cox and fitted a 2750Kv outrunner , cost £5 on ebay .Its so fast and powerful on a 1500 3s lipo . It goes vertical from your hand , count to three slowly and its at the limits of sight vertically . Its a go to model when ever I want a quick flight although its easy to fly with an excellent fast glide .
I'd go so far to say thats its probably the simplest and best fun model I have built in many years .
Choose a bright colour scheme as edge on it can disappear as wings are very thin.
Good luck with the build and have fun
|Thread: Stuck piston ring|
Good point Dennis. The contraction and then expansion of the alloy piston will be greater than the iron piston ring and may compress the varnish/gum etc that's holding the piston in its groove .
Soaking it before hand in plus gas may soften the varnish /gum and make the effect more pronounced .
Hello Ted . It should come out but it takes time .I have done many over the years and only occasionally have I been beaten . A good soak in some "Plus Gas " really helps . Other penetrating oils like WD 40 are a waste of time . Some heat will also help but you will need more that a oven . I have used a small blow lamp but care needs to be taken as overheating will ruin the temper of the ring . Heat the whole piston gently from the crown and allow the heat to travel down past the ring .If this fails to loosen it then soak over night in Plus Gas and try again . Then try prying the gap of the ring apart very gently with a Jeweler screwdriver sharpened to a sharp edge . Be VERY gentle or the ring can break . Once it starts to move push it back in then pry it out of the slot again and again ,gradually it will free . Keep applying plus gas to the area .
If it does break then a new / replacement ring is available on ebay for about £10
Good luck and let us know how you get on .
|Thread: SOLDERING TIPS|
As others have said " plug a Plug and socket together when soldering to prevent distortion of the mouldings" .
Don't forget though that when soldering to battery leads the contacts sticking out the end can will/can short on anything conductive like your helping hands so please insulate the bare contacts with some heat shrink.
|Thread: Futaba type transmitter charging plug|
Don what current are you considering for the jack plug ? They are not meant for heavy current and the center pin is not the weak spot ,it's the spring contact that makes contact with the outer part of the plug . I may be wrong but would suggest 3 to 5 amps max and check if it gets warm after extended use. Futaba only used them for under 1 amp for charging Tx's.
Edited By Engine Doctor on 07/01/2020 10:01:57
|Thread: 2020 BMFA power nationals|
The word must be out that its the August Bank Holiday weekend Just had the B&B owner where we stay call to check if we are still going as she has been inundated with calls for that weekend and all have said they are going to the Nats .
|Thread: CAA announce New drone trials !|
Hi Don . They Quote " up to 50 miles " Now that is extended line of site
|Thread: Building an electric Super Scorpion|
The Super scorpion is a lovely graceful aircraft . I don't know about the Ben Buckle version but the original KK model have a very weak dihedral brace . This was fine for free flight but often failed when converted to RC causing the wing to fold . Do please check the wing joiner and make stronger if needed
|Thread: CAA announce New drone trials !|
See Sky News article re the trials or remotely operated drone trials Now many of us have signed up to the new regs imposed upon us by the CAA and DFT and paid our £9 : all of a sudden its ok to fly drones Via FPV from remote control units for deliveries and Site inspections flaunting the laws and regs imposed upon us .Not just out of line of site but up to 50 miles away according to the article . It looks like we modelers have been used/duped to help pay for the setting up of this CAA department, or am I just being cynical ?
Conned by duplicitous politicians and back room departments yet again ?
This also begs the question ,is it these drones that are being reported by pilots of aircraft all along ?
If we do it its called mischief or breaking the law if a company does it its called progress
Edited By Engine Doctor on 26/12/2019 11:07:09
|Thread: Greetings from the land of Oz|
"Putting the E back into RCM&E". Does anyone remember when RCM&E was a small A5 sized magazine ? I was a school boy back then ,must have been 1959/60 ish. The mag always had aero, boats and some electronic DIY projects to whet your appetite. Can anyone remember the four channel TX ( 2 channel by proportional standards) that used a tobacco tin for a case. I built it as we had a local components shop near Clapham junction where I could get all the bits . Even made the PCB using Humbrol paint as the mask and Ferric Chloride that I bought at the local Chemist and didn't need a parent with me ! The only thing I couldn't get back then was a small telescopic aerial so used a bit of piano wire. It worked but affected range and eventually the TX was binned as I managed to find a second hand REP Tri Tone Tx. With a ten channel reed bank it was possible to get about five channels using a combination of buttons. The tobacco tin TX did work but only at about half the length of Clapham Common pond !
Good educational mag, it's a pity times have changed so much
Edited By Engine Doctor on 25/12/2019 13:09:50
Edited By Engine Doctor on 25/12/2019 13:10:56
|Thread: Merry Christmas|
A merry Christmas and a Happy New Year to one and all From Medway Model Flying Club.
We had our Christmas Club meeting on 18th December. A pleasant evening with a quiz ,a raffle and an excellent buffet .
We also presented the Air Ambulance Kent Surrey and Sussex a cheque for £2000 . MMFC have collected for the Air Ambulance since the early 2000's by having Swapmeets .raffles , indoor flying sessions and tea and cake bars at our summer club days . All of the profits from these go to our clubs charity the Air Ambulance . The members have chosen again them for the 2020 club Charity.
Below are a few of our club members including the two youngest , presenting our cheque to the Air Ambulance volunteer rep Mr Wildridge . MMFC
£2000 is not a lot in the scheme of things but all contributions add up the the £3 M a year needed to keep it flying and saving lives .
Ps We must send the photographer on a course !
|Thread: Dust extractor|
If your using ducting to your machines then try looking at Cyclonic dust filters on you tube easy to make , don't clog the filters and can be used with any type of vacuum cleaner.
|Thread: Best Heating Option For Your Hobby Shed|
Many garages that cater for large HGVs sell red diesel as the lorries use it for the cab heaters. Our local supplier ,an Esso garage sells it at 83p a ltr . You will have to fill in a form every time you buy any and declare what you using it for. A full tank approx 3 LTRs lasts about 7 hrs at full burn so good value heating .
The biggest plus I have found since using this heater is the lack of condensation compared to other forms of heating like gas or space heaters.
Edited By Engine Doctor on 22/12/2019 10:37:32
|Thread: The Gov't, CAA, BMFA & UAV legislation thread|
Yes you will . The Competency test will not count towards your BMFA achievement scheme test and the Examiner will still be required to ask you questions covering a wider range of subjects than the CAA test.
Edited By Engine Doctor on 21/12/2019 11:17:30
|Thread: Pureists Look Away|
Every time I see these clever conversions it reminds me of a old club member back in the early days of electric model (brushed motors with Ni-Cad batteries). This member brought along his latest model complete with the top end of a Oliver Tiger sticking out of the cowling . You guessed it , he had cut the top off of the motor to make it look IC ! Our Secretary at the time , a diesel engine fanatic went apoplectic . A really funny scene with the two of them almost fighting over the destruction of the Oliver .
Great conversion but please try not to use valuable old engines like open rocker jobs as they are often the only source of spares for us restorers in the Oily hand society
|Thread: Orchestra on your patch|
B.O.B is stirring music. I went to Leeds castle a few years ago to the Music in the park . During the afternoon we had War movie themes accompanied by a Spitfire and a Hurricane flying overhead . Later as Dusk was falling the orchestra played the Battle of Britain music and the spitfire flew overhead . A spectacular display as the sun set over Leeds Castle . Lump in the throat stuff ! The link is of the old warden display but you get the idea . The pilot who was in radio contact with the show flew until the sun Had set and then announced he had to get back to Headcorn air field a bit quick !! I cant find a recording of the actual event but This Leeds Castle video gives some idea with a brief shot of a spitfire in the middle of the clip .
AC /DC Highway to Hell or Top Gun for jets .
Edited By Engine Doctor on 19/12/2019 12:26:05
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