Dougie Swan 1 Posted June 9, 2020 Share Posted June 9, 2020 Hi, a bit of a long shot I know but I'm looking for a piston and cylinder for a sc30 fs, if anyone knows of any please let me know Thanks Dougie Quote Link to comment Share on other sites More sharing options...
Richard Acland Posted June 9, 2020 Share Posted June 9, 2020 Just engines appear to have these items in stock for an ASP 30 fs. As these engines are identical to SC engines you should be OK. Might be worth giving them a call to check. Richard Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 9, 2020 Share Posted June 9, 2020 Did it ever run OK? I bought one just before they stopped manufacturing and the idle needles are too short to be effective or the main jet bore is to large for them to do anything. Quote Link to comment Share on other sites More sharing options...
John Wagg Posted June 9, 2020 Share Posted June 9, 2020 Just run mine this evening and ran fine. Flying it in a Quaker Flash vintage. Compression still lower than I expect but has improved a bit. Throttles well and sips fuel at a minuscule rate.. I have recently bought a piston ring and a couple of head gaskets from Just Engines so give them a try. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 9, 2020 Share Posted June 9, 2020 I hd several and loved them all. I still have one Quote Link to comment Share on other sites More sharing options...
John Wagg Posted June 9, 2020 Share Posted June 9, 2020 Posted by Peter Miller on 09/06/2020 20:53:04: I had several and loved them all. I still have one Pity they aren't available anymore. Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 9, 2020 Share Posted June 9, 2020 i have a spare asp 30fs which my neighbour says needs a new front bearing. It was a spare that came with a model. Bill Quote Link to comment Share on other sites More sharing options...
Dougie Swan 1 Posted June 10, 2020 Author Share Posted June 10, 2020 Thanks for all the replies I've ordered the parts I need from just engines Dougie Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted June 10, 2020 Share Posted June 10, 2020 Posted by Martin McIntosh on 09/06/2020 20:11:42: Did it ever run OK? I bought one just before they stopped manufacturing and the idle needles are too short to be effective or the main jet bore is to large for them to do anything. I bought 2 in 2007 Martin and they run like the proverbial sewing machine The best model match have found was to put one in the little electric Seagull Decathlon, having added a flat birch ply engine bulkhead and mount. Recommended 10x6 prop BUT My combo runs best through the full throttle range On a 9 x 5 prop and Laser 5% fuel Both have run and still do, through 13 seasons and no spares required yet Edited By Denis Watkins on 10/06/2020 10:16:03 Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 10, 2020 Share Posted June 10, 2020 Some time ago I bought an SC 40 2st. which is spot on and got the 30 on the strength of this. Phoned JE and got them to measure a new idle needle in case mine had the wrong one fitted but the sizes agreed. It would be interesting to know the length of your needle from the shoulder to the tip. The only way that I could get a flyable idle was to drill a small air bleed hole, gradually increasing the size until it worked. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 10, 2020 Share Posted June 10, 2020 Mine flew severl very aerobatic models such as the original Peggy Sue. IT also flew my Payret Maubousin Type 11 ans that was 76" span but like avintage model with a very large fuselage. I still have one and NO. I am not parting with it Quote Link to comment Share on other sites More sharing options...
John Wagg Posted June 10, 2020 Share Posted June 10, 2020 Sorry can't measure the idle needle as it is boxed in on the model. It means taking it out to access it. I have two SC 2 strokes, a 61 and a 53. The 61 plenty of power except the low speed throttling not perfect, but never cut out on me. The 2nd hand 53 I can't get the carb' set up at all. The idle needle seems to have more effect than the main. Very strange. Something to work on when I get round tuit. Edited By John Wagg on 10/06/2020 13:35:14 Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted June 10, 2020 Share Posted June 10, 2020 Posted by Martin McIntosh on 10/06/2020 11:35:25: Some time ago I bought an SC 40 2st. which is spot on and got the 30 on the strength of this. Phoned JE and got them to measure a new idle needle in case mine had the wrong one fitted but the sizes agreed. It would be interesting to know the length of your needle from the shoulder to the tip. The only way that I could get a flyable idle was to drill a small air bleed hole, gradually increasing the size until it worked. Am the same as John Wagg, Martin The motor is in cowl, On both, but when I get one out, I will prop and cowl off and check for you. At this moment in time, 13 years of seasonal use and storage and both idle and tickover impeccably. I get a boost in power using 10% fuel, but am settled on Laser 5% these last few years. Don't overprop it. These little motors like freedom When inclined to lower noise, we stick a larger prop on, but these motors are very quiet and don't have any irritating rasp. I could not have drilled a hole in one of mine and feel that when we sort this, then that hole needs to go Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 10, 2020 Share Posted June 10, 2020 I am using an APC 10x6, same as on my OS 26`s, and bought the motor for my Li`l Cub, no problem with the top end power but in order to use full flaps for STOL the motor needs to come down to a reliable idle. I bought it from some buffoon who stated that it had been bench tested only and as good as NIB. Every single part, including the prop. driver, has plier marks! The idle needle was screwed fully in when I got it so can see why it was sold. A complete new carb. would cost nearly as much as I paid for it. I appreciate your offer to measure your needle, but I now reckon that the main jet bore is oversize, and the jet is pressed into the body so cannot be replaced. I may just yet fill the end of the jet with solder and re drill it. I used to do similar with Kavan pressure carbs. many moons ago. Quote Link to comment Share on other sites More sharing options...
Denis Watkins Posted June 10, 2020 Share Posted June 10, 2020 Update Martin Measured idle needle 18mm shoulder to tip Now have checked both SC30s, both run well and idle well and both idle screws Are nearly fully home There is about half a turn from stopping fully home So from fully in to half turn out is my ballpark idle don't forget the main needle alters Also, realise we use a 10 x 6 on a 40 9 x 5 or 9 x 6-10 x 5 depending on model, but my 3lb Decathlon runs a 9 x 5 Edited By Denis Watkins on 10/06/2020 16:45:47 Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 10, 2020 Share Posted June 10, 2020 Replied to your PM before I read this. It would easily account for half a turn. Thanks again, Martin. Quote Link to comment Share on other sites More sharing options...
John Wagg Posted June 12, 2020 Share Posted June 12, 2020 Acquired another SC30FS from Bill Macleod (above)(thank you) Took me a bit to get it going and quite sensitive to tuning. Idle needle about a 3/4 turn out and 1 turn for the main. Compression low but feels higher than my own original, (that's maybe how they are.) Once tuned throttles well but needs an electric starter to spin it up to get started. Not been able to start it by hand but have had a couple of spits. Used 9x6 prop' initially and then swapped to a 10x6 on the last run. The 10x6 tickover is better due obviously to flywheel effect. Using an OS'F 4 stroke plug and run on both Optimix-5 and Laser-5 fuel. Quote Link to comment Share on other sites More sharing options...
Peter Miller Posted June 12, 2020 Share Posted June 12, 2020 Posted by Denis Watkins on 10/06/2020 10:14:27: Posted by Martin McIntosh on 09/06/2020 20:11:42: Did it ever run OK? I bought one just before they stopped manufacturing and the idle needles are too short to be effective or the main jet bore is to large for them to do anything. I bought 2 in 2007 Martin and they run like the proverbial sewing machine The best model match have found was to put one in the little electric Seagull Decathlon, having added a flat birch ply engine bulkhead and mount. Recommended 10x6 prop BUT My combo runs best through the full throttle range On a 9 x 5 prop and Laser 5% fuel Both have run and still do, through 13 seasons and no spares required yet Edited By Denis Watkins on 10/06/2020 10:16:03 I find that a 9X 6 works a treat for aerobatics Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 12, 2020 Share Posted June 12, 2020 I am pleased that John found my SC30FS so good. I have another which is fitted in a DH Hornet Moth 47" span. Bill Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 12, 2020 Share Posted June 12, 2020 I obviously have an out of spec. needle or jet but only just out because 1/2 to 3/4 turn is not a lot compared with most. I shall find a way of taming the beast. It would not really put me off getting another if the price was right. Quote Link to comment Share on other sites More sharing options...
John Wagg Posted June 12, 2020 Share Posted June 12, 2020 Something I forgot on my latest SC30 is the main needle felt loose so I swapped it with the one out of my SC53 two stroke. The "O" ring probably needs replacing.? I also checked the idle needle on the 30 and, contrary to what I posted above, it is only about 1/4 turn out from fully closed. Edited By John Wagg on 12/06/2020 18:53:35 Edited By John Wagg on 12/06/2020 19:12:34 Quote Link to comment Share on other sites More sharing options...
William Macleod Posted June 12, 2020 Share Posted June 12, 2020 could possibly sell the sc 30fs fitted to the hornet moth but would have to go with airframe and servos. bill Quote Link to comment Share on other sites More sharing options...
Martin McIntosh Posted June 13, 2020 Share Posted June 13, 2020 Thanks, but I do not need any more models. 1/4 turn out is very close to not working at all like mine. When I get time I may well look at removing material here and there to see if I can get the needle tip further in. Quote Link to comment Share on other sites More sharing options...
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