Super Tigre classics

Calling all aficionados of Italian engines!! I’m currently working on getting started on a history of Super Tigre’s classic era (from the start up to the early 1960’s). I have assembled a fair bit of information, but I’m going to need help from better-informed sources to get this done!

One area of confusion arises with the 5 cc Super Tigre G.21 series. I gather that the original ring piston version originated in 1951. I need to know when the first lapped piston models appeared. I also know that the lapped engines came with shiny cases (as illustrated) and with matte cases as well as separate backplates secured by four screws – I need to know when those changes occurred.

Another area where I’m lost is with the G.25 diesel of 1 cc displacement. I believe that the first model with integrally-formed cooling fins originated in 1954,, but there was a later version (illustrated) with a separate aluminium alloy screw-on cooling jacket. I need to know when that change was made.

Can any kind reader help me here?

This thread is of course open for any and all discussion relating to Super Tigre engines.  I may have more questions myself!

26 thoughts on “Super Tigre classics

  1. I’m excited to see this development. I have a small collection of vintage Super Tigre RC engines. I see that early on there were several carburetor changes and also a development of the crankcase castings. Would love to see an analysis of all the “V” engines and previous lines too. Was this the era of escapement RC and 3 line U control carrier events? I wonder. Thanks as always, Paul V Thailand

  2. Aaaand, I’m wondering, what was the very first Super Tigre throttled engine please? Was there any thing before that in Italy such as the Vivell ignition with choke throttle accessory as per United States scene? Thanks, Paul

  3. I also have a lapped .29/5cc Super Tigre Model G21 from that era and it looks just like the one in your picture except the intake sleeve blanks off the holes drilled for NVA and the front of the intake boss is now drilled for NVA. It has a serial number on the side of the right lug and it is 1264. One of the back plate screws is replaced with an Allen Screw and another has a pressure take off fitting that may or may not be original. The exhaust outlet casting has a mild curve ground into it so this too may be a modification. I hope this helps some. Thanks, Paul

  4. Paul, my study of the Super Tigre range will be confined to the “classic” engines from the first 20 years, which preceded the R/C era. Not really having an interest in R/C, I’ll leave those models for others.

    Thanks for the info on your G.21. Does it have a shiny or matte case?



    1. Another question for the group – does anyone have an image of the 1947 OSAM GB.16 diesel? That’s one that has eluded me so far!

      Cheers, Adrian

  5. No firm dates, Paul – there’s no sudden switch from the classics to the R/C field. Generally speaking, I’ll cover the period from the very beginning (pre-WW2) to the early 1960’s, when the R/C market began to predominate. That’s the period in which my personal interest lies.



    1. Thanks to some help from folks who are in direct contact with me, I think I now have this all sorted. The article is more or less finished and will appear in due course. Stay tuned, Super Tigre fans!

  6. Adrian
    ! have a few of the hard to get STs in my collection. If any pics would be helpfull I’d be glad to help. I’m interested in anything with the ST brand on it.
    This web site is a blessing to us. Thanks for your effort
    Tom Coletta

    1. I have images of all my subjects, but could use better images of the original 1950 G.20, the 1953 G.23 2.5 cc diesel (with integral cooling fins) and the plain bearing version of the G.30 diesel. Do you have any of those??



        1. Thanks, Tom! That will help – I don’t have a really good image of that one – mine is a bit low-res. Just so you know, I like the engine to be shown with its cylinder vertical, regardless of the angle from which it’s shot. I like a plain background (choose your own color!) with no patterning and no “joints” or angle to distract from the main image Finally, I try to keep all shadows pretty “soft”. Check out my own green-background images and you’ll get the idea.

          If you can provide a few imaged meeting the above requirements, let me know and I’ll contact you to provide details on where to send them. Many thanks for the offer of help – I can always use more of that!

  7. Hello! You make a wonderful work for the History of our passion. About old ST engines and specially the 21/29, i can try to have some details from one of my friends, André Nougier (french speed champ .15 and.29) He don’t speak english, so i need precise questions to made translations) A detail, his father was Jean Nougier builder of racing Nougier motorcycles. Pierre

    1. Thanks for this, Pierre! I was also a racing motorcyclist, and I heard of the Nougier motorcycles, although they were not very common in England an (later) Canada when I was racing. I never actually saw one.

      I’d be interested to learn how the Super Tigre engines compared to the Micron racing models. Did Andre use Super Tigre engines because they were faster than the Microns? Also, in what years did he win his championships?

      Thanks for your interest!!



  8. I have a racing engine question.
    How did the G24 Tigres compare to the dooling and Mc Coy engins in performance? The 24 I have appears to be a much better engine

  9. Adrian,
    I have an ST G.30 as shown in current edition. Ran It on one occasion; found it easy to start an enormously loud. Never had a use in mind.
    Current wisdom, and possibly an article in Aeromodeller or Ian Allen mag mentioned that it began as a front rotary valved engine of some off-displacement. They turned it around put the BB front end on instead of a backplate, capped the (now) rear end and did the rest of the uppers and innards as in your image.
    If you have a use for it I might be tempted. Of course, it’ll probably need boiling out in anti-freeze first…
    Keep up the good work, please?

  10. Oh, another diesel related thought – but not on ST engines…
    Aeromodeller published a series of articles on the FAI Team engine the Dutch Metkemeyer brothers developed in about 1978. I have – somewhere – those editions most likely in good shape to scan.
    I saw the brothers fly at the Woodvale RAF site of the 1978 WC. (Family leave from Germany to tour UK , and oh, by the way to spectate at the WC. We had a great – if quite rainy – time.)
    I don’t see their article(s) in your publications area. Might be able to find them, etc.

  11. Tom,
    Definitely not for trade – I have too many engines now (if that’s possible…)
    I’ll have to dig the beast out, clean it up, and see what I have.
    Are you thinking of using it or “displaying” it? The BBs might need some thought…
    I’ll get back to you, but it can’t be very soon; swamped with inescapable trivialities.

  12. Attachment

    Adrian, can you identify this one?. Forget the head, I made a diesel conversion head for it. Waiting on a NVA for it.

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