RE: Super Tigre 25 question
Hi Will: Regarding age of engine I can confirm I purchased it secondhand, from a shop during the middle to late 80's. It has not been used much since. Possibly because it would not run reliably. I have bench tested it with different nitro content fuels ( 5%, 10%, 15% ) and glo plugs. I have also checked the carburetor spray-bar is positioned correctly. On my most recent test I was using 5% nitro and OS No 8 plug. I am wondering if the compression is lower than it should be it is not drawing in the fuel reliably. This in turn would cause me to over richen the mixture to compensate and the engine cannot cope with that amount of fuel. Also I notice when running there is fuel visible in the carb intake as if it is not drawing properly. I am confident it has the correct carb fitted but is quite large for a 25 when compared to a OSFP 25. I am hoping this can open a discussion as I feel the engine is to good to be scrapped. Regards Colin.
Posted on: 1/20/2012 3:45 AM by Author "Unowat2" in the forum "SuperTigre Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=10918179

RE: Super Tigre 25 question
Hello: I was also interested to read your article on the Super Tigre 25. I have the same but with a faded purple head. I am having difficulty getting it to run reliably, either tick-over or full speed. Really my question is does it need a rebuild as I feel the compression is not good.
Posted on: 1/18/2012 8:33 AM by Author "Unowat2" in the forum "SuperTigre Engines Support"
http://www.rcuniverse.com/forum/fb.asp?m=10915122