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Discussion Starter · #1 ·
My best ideas are from the john!! BINGO!!! So easy!!! to develope
a hydrostaic transmission. I am working on one with two small
hydraulic motors on each side of the swingarm. The motors will be
connected directly to the rear wheel. The pump will naturaly be
powered
off of the engine with a variable controller and I will also have a
forward reverse control valve in line. I am going to put it
on a mini bike. I am talking to hydraulic engineers and they say it
would be an absolute piece of cake for the Boss Hoss. We could have
reverse and unlimimited variable ratios..Horsepower to the ground
work be much improved. Here's a short but sweet theory i'm going for:

What most people refer to as a hydrostatic transmission is also
called a closed loop hydraulic system. In a closed loop hydraulic
system a variable displacement, bi-directional, uni-rotational pump
has its two ports connected to a bi-directional motor. The
direction of rotation and speed of the hydraulic motor is controlled
by controlling the displacement of the pump. The displacement
control of the pump can be controlled mechanically, hydraulically or
electrically.
Closed loop systems are used on various equipment from winches to
wheel drives and provides a very compact package capable of
transmitting large amounts of horsepower. The typical
configuration for a hydrostatic transmission will contain the
following components:
HydroStatic Pump Containing:

Main Pump and Charge Pump
High Charge Pressure Relief Valve
Replenishment Check Valves
Crossline Relief Valves

HydroStatic Motor Containing:
Motor
Hot Oil Flushing Valve
Low Charge Pressure Relief Valve

Typically 20% of the main loop flow will be replenished with the
charge pump and forced out through the flushing circuit. This
flushing circuit fluid will be cooled and filtered on the way back
to tank.
One option that we highly recommend is high pressure filtration in
the main loop. This will ensure that both the pump and motor are
protected from each other in the event of failure. This will pay for
Itself the first time a motor is saved when a pump falls.



FastEddie
 
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