Martyn K

Hi Ken   It's not the X21 which really was a "flyer" although I have to admit the build quality is excellent. I think I would like to use it but as you say it is tempting to keep it as is and use the HB21 (a PDP engine) which is almost ready to go.   Martyn @import url(/CuteEditor_Files/public_forums.css);

Posts coming in fast.. thanks   I haven't stripped the engine so I am not sure how the venturi is held but the description sounds reasonable. I'll find out in due course   Regarding collecting. Unless someone wants to make me an offer (quickly) - and it covers a new comparable replacement than I probably wont be interested. (or a good swap)   It is a rather nice engine though. ST used to make their crankcases using sand castings - gives a beautiful look and feel to it.I have a feeling that it will soon get soil ingrained though.   Martyn  

Thanks David,   I felt a bit uncomfortable about that as well.   Regards   Martyn @import url(http://www.modelflying.co.uk/CuteEditor_Files/Style/SyntaxHighlighter.css);@import url(/CuteEditor_Files/public_forums.css);

Identified.   The engine is a SuperTigre S21...   Thanks to Dave at "Motors and Rotors" (and everyone else who has assisted with this).   Regards   Martyn @import url(/CuteEditor_Files/public_forums.css);

Hi Bert   I didn't know Mick, but I agree, Dave has been very helpful.   Regards   Martyn      

Hi Richard   Good points, but apparently there is a carb and silencer available for this engine (from Motors and Rotors) which combined are a bit pricey, but cheaper than a new engine.   It will be interesting to see how it all goes together.   regarding the pressure pressure feed nipple, I actually fitted that, I am not sure I have the original screw, but I guess it will be M2 or M2.5 - easily resolved.   Martyn @import url(http://www.modelflying.co.uk/CuteEditor_Files/Style/SyntaxHighlighter.css);@import url(/CuteEditor_Files/public_forums.css);

Hi Pat   It was defintely either a 21 or a 19 sized engine. It was bought as a demo engine for a new free flight power class as an example of a low cost 'standard' engine, but the idea was taken any further.   I was told that the 21 referred to the capacity, however my source may not be reliable   Thanks for the advice.   Martyn

Thanks,   I'll try them.   Martyn

OK,   Thanks all.   I actually have an old (what else) HB21 engine of the same era. That has a R/C carb but just needs a silencer. I could probably make one or get something to fit, but from the advice above, I detect a new engine on the horizon.   I'll still contact Motors and Rotors though... see what thay have to say   Best wishes   Martyn

Thanks Bert   I didn't even know they weren't Italian exotica any more...   I'll trry them and report back   Martyn

Hi Ken   Thanks for the reply. Yes it is definitely a SuperTigre (I hadn't realised it was one word - amazing after all this time). I would just like to use it if possible. It's beautifully finished as al ST engines are and a bit unusual in this modern world. Definitely not in the current catalogue list.   Martyn

Hi all   I bought this engine about 20 - 25 years ago for a free flight open power model. So far it has never been run.   ( I have a feeling that the engine was really designed for a control line model)   I would like to resurrect it as a power plant for my Webbit mass build model but need an R/C carb and silencer. It has '21' stamped on the crankcase ( I remember it being 3.5cc in proper units) but am struggling to identify which model it is. It was definitely at the budget end so probably not an 'X' series engine..   http://www.czd.org.uk/aeromodel/images/st21-1.jpg http://www.czd.org.uk/aeromodel/images/st21-2.jpg http://www.czd.org.uk/aeromodel/images/st21-3.jpg   Does anyone know what it is and possibly where I can acquire a silencer and carb for it? The exhaust mainfold bolt holes are 32.5mm apart.   Thanks for your help (hopefully)..     Martyn     (Not sure whether it is possible to upload images or whether that right will come after developing beyond newbie to the forum so apologies for the use of links)

Posted by Engineer:Atomic on 18/01/2011 13:24:32: With an April start date - that should be OK. Count me in   Martyn   @import url(http://www.modelflying.co.uk/CuteEditor_Files/Style/SyntaxHighlighter.css); @import url(/CuteEditor_Files/public_forums.css); Got my partial kit on Saturday 19/3/11

With an April start date - that should be OK. Count me in   Martyn   @import url(http://www.modelflying.co.uk/CuteEditor_Files/Style/SyntaxHighlighter.css);@import url(/CuteEditor_Files/public_forums.css);