By example a 100 F increase in fluid temperature would make the pipe increase its RPM capability as much as making it 1/2" shorter would in Dave's example. See attached calculation showing the time it takes for the pressure wave to return to the exhaust port.
I ran my .12 outrigger hydro yesterday for the first time this year. It's such a fun boat, I wish the class would take off! The Sport 20 boats are really pickin up in numbers, and theye look like a lot of fun too. Sport .12 might be hard to find a small enough prop though. I know there are...
$400
This 40 boat is for sale at the Johnston City race this weekend. It's a nice lightweight build. They are racing the sister boat today and it has looked pretty solid. If interested in more details, please reply here.
I've found that any flex in the linkage or movement of the servo in the box, or box in the boat if you are using rubber bands to hold it in can cause this. the rudder has a lot of force on it at speed trying to turn it right. If the linkage & servo can't deal with this then the boat will pull...
River City Racing club's first race of the year is the Spring Shootout on May 14-15. See flyer attached to enter the race.
Flyer: Spring Shootout 2016.pdf
Same classes as last year. Last year we had 141 boats in 16 classes. Classes with a * next to them did not fill last year, so if you...