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Rik is racing for fun!

The 125 flame thrower

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TZ 350 in the making.
My 1979 TZ350 Yamaha.
Rik's Rotax 125 1993
Rik's Rotax 125 1994
My 1992 RS125R Honda
Visionsports Riding Schools track days.
The 125 flame thrower
RS125RF Honda

1992 RS125R Honda tune-up.

1992 RS125R Honda Cylinder

Hear the 125cc sound/scream!!!

1992 RS125R Honda Cylinder

1992 cylinder RS125R Honda

1992 RS125R Honda Port Map

1992 cylinder RS125R Honda

Is this new?? Well, now it is. I had this thermostat machined out of an old late 1970'S TZ head when they where standard on those bikes(racers). For some reason they disappeared, and now we have to deal with taping the radiators. I don't like this very much, and in the past I have driven race-bikes with the same thermostat on my TZ 350 and GP 125 Rotax and it worked like a charm. Always the same temperature, 70*C rain or shine. Ofcourse you could put a colder themostat in there, and that I might do with my 1992 RS125R Honda since they seem to run a bit cooler. All that tape on the radiator is like someone pulling you by the jacket while you are on the bike. Try to stick your hand out of the car while driving + 100 MPH, it is a lot of pressure. Makes you think..........(O;

Thermostat T-piece

A lot of head scratching, and comments on this thermostat.  I used it in the early 1990's and look what they now (2003) came out with (O;   is it making sence now?

These "new" thermostats look very much like mine.

Read an article about these thermostats.

Radiator Thermostat T-piece

1992 RS125R Honda

1992 RS125R Honda

1992 RS125R Honda

Thermostat T-piece

1967 Yamaha4 125 sound

Little note to remind me "not" to do stupid things, if possible  (O;

Just a little reminder for myself when I'm on the bike. Easy does it Rik! 70*C ? Fuel on? These little engines produce about 40HP at 12.500rpm. They can reasch a top speed of 140 MPH on very long tracks. Just 70 kilos and powerful brakes. No need to say that they are very fast little devils. If you know how to ride them, you can make much bigger bikes look silly. Braking very late, if at all, cornering speed is enormously high with those light things, and the throttle is always wide open and screaaaming like there is no tomorrow. If you would like to hear my  RS125R Honda sound  then click on link below and hear me run it up to "just" 11000 RPM to run in the piston.

RS125R Honda sound

View a 125cc online demo race! This is real, no video game.