Simon Lumsdon 1

Hi John plenty of small diesels on ebay at very reasonable prices, if you save your searches they will pop up new items for you as they are listed, very handy, the downside is you will quickly have a shelf full of engines 😞

Completely agree 4 strokes are straightforward and suitable for a beginner, in my experience easy to start and idle/throttle easier than 2 stoke. I have found that there are plenty NOS (unused) SC and ASP varients on ebay which are a bargain and very good, on a par with OS but much cheaper. Enjoy

Thanks Grumpy, Airbrakes function looks like it will do the job, good spot!

Hello have read the manual umpteen times but cannot understand how to program a flap mix into a dual servo aileron wing? Have aileron servos on channel 1&6 using the 2AIL setup but want to drop both ailerons on a switch to mimic flaps? All help welcomed thanks simon

Oh and definitely post them separately

I think ebay is the best place to achieve a fair price, research their value by searching for similar on ebay beforehand, photo them carefully and give a clear description and start auction price at a realistic reserve price and you will sell them all. The wankels go for £500 and up, the remainder will be more modest prices but im guessing you will clear £1000, just be patient and put the effort in, good luck

My tip, place in bowl of boiling water for 5 mins, then use prop to gently free it, this usually works 🙂

Have noticed the same thing, also tried blowing down fuel pipe trick and carb is blocked when throttle closed, which suggests idle might be blocked, need to investigate that further

Engines are both in good condition with smooth bearings, o-rings are fine (and i do have spares), think these engines are just very sensitive to idle needle settings. Fuel is also fresh. Think i will stick to OS engines in future

Thanks John, sounds like a similar experience to myself, poor throttling being the main one, point about exhaust pressure makes sense and is going to be very helpful priming a cowled engine. Im also going to buy a Just engines geared starter, current one is too gutless

Well i didnt know the trick with blocking exhaust to draw fuel in so will try that. Will also check plugs are good. Agree with comments about these engines being sensitive to idle valve settings. Thanks

Sorry WOT wide open throttle

So have a couple of SC engines which are very bad starters and looking for advice please. Have googled all the threads on setting up high speed needle, low speed needle and trick blowing air into carb etc but no success. I have checked o-rings but they seem ok. First one is an SC61 in an Extra, inverted,12x6 prop, is a sod to get started but once running goes well, it throttles down ok although low speed idling is poor. High speed is fine, leans out nicely and throttles ok but low speed running a struggle. Getting it to start is hard since its enclosed in a cowl, inverted and doesnt draw fuel well when cranking WOT. Have tried the blowing into fuel feed when throttle open (ok) and when closed (blocked), adjusting idle valve doesnt unblock air flow, should it? Second engine is SC52 and its equally difficult to start, low speed idling is poor as is throttle up. Puzzling thing is neither engine seems any good at drawing fuel when WOT? Using a 12v gel battery and control panel flow feed which work fine on various 4 strokes and an fp40 (but they are all OS) Starter isnt the strongest, do i need a geared starter? Just to be clear, i can get the engines to run eventually and they sort of behave, its initial starting which is the main challenge? All ideas appreciated Many thanks Simon

Many thanks for the feedback on props which is interesting. The OS40FP runs well and is mostly reliable but cant be fully leaned out, never really comes on song which suggests a finer pitch prop might help? Throttle response is not amazing either so will try suggestion of 11x4 instead of 10x6 Have also moved c of g back a bit after mentioning rolls caused the nose to dive, which improved things. Starting to enjoy the model as i get more experience with it. Have now finished a Wot4 with os52fs which will be an interesting comparison, just need the weather to improve now!

The Cougar is flying well (or i am improving), have increased throws to 50% and the FP40 is well suited to the model, starting to get my confidence and started to hoon it around on full power today In hind sight suspect issues were all flying related, c of g, throws and engine are all fine. Adding some circles to the top of the wing is a good shout, it does seem easy to get disorientated with this model, someone commented the purple doesnt help either, although that may also just be inexperience..