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We
all know that one way to increase the amount of power applied to the water
is to reduce drag wherever possible.For
this reason, M&D designs pursued a replacement for the standard 2-lip
rubber crank seals that the G23 uses.Almost
anybody you talk to will tell you that a new engine picks up several hundred
RPM after a gallon or two of gas has gone through it.While
it’s true that this is due to the engine “breaking-in”, a good bit of the
“breaking-in” process is the rubber seal lips loosening their death-grip
on the crankshaft!!
For
this reason, we set out to design a seal suitable for RC boat racing, and
peak performance, but without the mess and air-leaks that some fixed, close-tolerance
seals aim to achieve.The M&D
designs ZeroDrag crank seals are the answer!These
seals use a fully CNC-machined billet aluminum outer shell, and a CNC machined
bronze element, suspended by a rubber o-ring.
Extensive testing has shown typical gains are approximately 0.2 HP, and 200-300 on-water RPM.The best thing about these seals is that you reduce drag at ALL RPM’s!There are very few modifications possible to a 2-cycle engine that give you an increase in torque and power output across the entire RPM range.This results not only in more top speed, but also better acceleration, and improved ability to get “on the pipe”. |
