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One of my models has an OS15 of similar vintage in it. Runs fine on fully synthetic. Indeed, I have quite a few old engines, my favourite being a Webra 61 that I bought in 1967. Despite having run on castor for decades, when brought out of retirement I switched it to full synthetic with no issues. Castor belongs in a museum, not a model engine. A good synthetic is infinitely better. -- Pete

I just went up and unscrewed the cap. The balsa cement is still perfectly liquid. The smell brought back memories. Hey! maybe I will start glue sniffing!!!!

This is an old article and while it relates to diesels the principals involved are the same for your enya. You can ignore the bit about extra oil and compression settings. I would also tend to use a smaller prop than normal not larger as combat diesels tend to use much smaller props than r/c would normally so the point of reference isnt the same. Something like a 7x5 or 6? I think i used to run my OS 15fp on 8x4 but it was run in by then. Anyway have a read and see if you find any of it useful https://web.archive.org/web/20190917165855/http://www3.telus.net/dieselcombat/about_diesels.htm Again on fuel, my Enya 53, 120, 155 and 240 all run on laser 5 without issue. They are all 4 stroke but still, fuel is fuel.

The event write up from last weekends SWSA Fly-In at the Bwlch is not uploaded to the PSSA website - it can be read HERE

I've failed Roy. Finally got the plan from the chap who promised it was the Super 100. Turned out to be the Super Simpleton 96". It seems pretty near identical as far as I can remember, apart from the slightly reduced span. The good news is that it has the instruction sheet. I'm going to get the plan copied, the instructions too, then I'll have pdf copies for anyone who wants one.

DG - Why not make one wing the plug and the other the socket....no markings of confusion either works or not...simples PS quite like those MaxLoc connectors

Nice but the top picture is going to cause some mirth....woof woof.... Stay safe out there...

One thing i would suggest is you resist the temptation to run it slobbering rich. If it is a ferrous piston/liner you do need to get it hot or it wont work out too well. Its all about the expansion and work hardening, you need the heat. Dont thrash it quite as hard as an abc, but get the revs up and get some good heat into it. Say 90% of peak tune in short bursts. On the fuel, i would use the laser 5 from the get go personally. A friend at my old club had a similar enya and we ran it from new on the laser 5 without any problems at all.

Hi David . You Enya has as you say old technology so won't develop as much power and heat as a modern engine . As its new then an oil rich fuel for running in is a good idea. A drop of castor added to your synthetic fuel should be OK for the Enya if it has iron piston and steel cylinder. A drop of castor may help prevent any scuffing during first runs. Once fully run in then synthetic should be OK. If its an ABC set up then synthetic from the first start. I ran an old Enya 25 in a fun fighter some years ago on synthetic fuel . That had an iron piston and it was fine despite it being given a hard time . One thing about Enya is they have the best quality materials so should be fine if run in correctly.

I’m a fan of Maxloc connectors.

Thanks for the reply Don. I'm nearing 77 and having spent most of my modelling 'life' flying slope soarers and thermal gliders, the power scene is relatively new to me. I picked up the modelling hobby again about 3 years ago following a lengthy break from building and flying. Fortunately I have become pally with with a small local group of mainly power fliers and it's good not to feel under any pressure to 'perform' on the flying field. I've recently built and flown a standard Junior 60 a have a Vic Smeed Madcap that's awaiting a maiden flight. I first flew this model design as F/F in the 50's. I have a selection of electric gliders that fly well. Almost all of the flying at our field is electric. I'm amazed both by the modern kit and by it's efficiency, you never stop learning. The Falcon is a short kit and will no doubt take me many hours of workshop time to complete with the hope of flying it next year! Best wishes Chris (SW)

I usually leave a short extension lead permanently plugged into the receiver. I colour code (with insulating tape or similar) the trailing end of the extension lead to match similarly coloured coded ends on the wing servo leads. Connecting up is then just a case of plugging matching coloured ends together. No need to go near the receiver.