Originally Posted by vulcom1 Most of the 2 stroke glo fuel engines have bronze bushings on both ends. At the moment I can not recall any that don't. |
I just checked my small collection of glo engines for bushings, all rods were aluminium:
O.S. MAX 15 CL - none
O.S. MAX 15 RC - none
O.S. MAX-S 30 RC - none
Thunder Tiger 25 RC - none
GTM(GM?) 15 RC - big end only
All of them are 'sports' engines so not built for high performance, with the exception of the 'GM' or 'GTM' engine which is an awesome engine.
A small diversion:
All I know about the 'GTM' is it's made in Japan and is Schnurle ported, the castings and the machining are very nice.
It's distinctive in that it has a rectangular box for the exhaust's expansion chamber.
I have never seen another anywhere, even on the net, except in an RC engine collectors case, and a few years ago as a background image on bottles of a popular brand of glo fuel here in Oz(Pro-Glow). Unfortunatelly I didn't keep one of those bottles and they're now using an image of a different engine.
I would post a pic, but It's been in bits for replacement bearings for nearly a decade, 'spose I should do something about that one day!.
If anyone knows anything about this engine, please let me know.
EDIT:
Well I've just found(total fluke, long story) that the brand name is G-Mark, all I had to go on was the symbol cast on the crankcase, which looks like the attached pic.
You can see where I got 'GTM' from.
Very little info about this brand of engines on the net, except for that on Ron's Chernich's website (
www.modelenginenews.org/) for a .30 5cyl 2stroke radial(!), a twin horiz-opposed .12 and a small .030 single.
Still absolutelly zero info on mine.