Is hyraulic drive posible?

Hydraulic power was the only way I could think of to use one engine with
two drives in an in-line thrust design. Some of these motors are very
lightweight (IMO) and,as you said, are not the $150.00 cast-iron jobs from
Graingers. These are $2300.00 each. They're piston motors. They ( Eaton )
carry several that are rated from 2000 RPM, up to 3600 RPM... several models
to choose from. And, they have a ton of torque! :

Phil (on his way to the patent office) J/K
++++++++++++++++++++++++++++++++++++++

If one gears a clock motor low enuff...
it is said that one could pull the earth off axis.
Hardly a desireable speed for a prop.

There is no free lunch where torque is concerned.
Best be careful what is implied to the uninformed.

http://vettenet.org/torquehp.html
http://www.carcraft.com/techarticles/868/

P.S.
Rotsa' ruck at the U.S. Pat. Off.


Barnyard BOb --

"Barnyard BOb -" wrote in message
...


Hydraulic power was the only way I could think of to use one engine with
two drives in an in-line thrust design. Some of these motors are very
lightweight (IMO) and,as you said, are not the $150.00 cast-iron jobs
from
Graingers. These are $2300.00 each. They're piston motors. They ( Eaton )
carry several that are rated from 2000 RPM, up to 3600 RPM... several
models
to choose from. And, they have a ton of torque! :

Phil (on his way to the patent office) J/K
++++++++++++++++++++++++++++++++++++++

If one gears a clock motor low enuff...
it is said that one could pull the earth off axis.
Hardly a desireable speed for a prop.

There is no free lunch where torque is concerned.
Best be careful what is implied to the uninformed.

http://vettenet.org/torquehp.html
http://www.carcraft.com/techarticles/868/

P.S.
Rotsa' ruck at the U.S. Pat. Off.


Barnyard BOb --

You lost me. What gearing are you talking about? These motors would be
direct-drive.

Phil

"PAW" wrote in message ...
"Barnyard BOb -" wrote in message
...


Hydraulic power was the only way I could think of to use one engine with
two drives in an in-line thrust design. Some of these motors are very
lightweight (IMO) and,as you said, are not the $150.00 cast-iron jobs
from
Graingers. These are $2300.00 each. They're piston motors. They ( Eaton )
carry several that are rated from 2000 RPM, up to 3600 RPM... several
models
to choose from. And, they have a ton of torque! :

Phil (on his way to the patent office) J/K
++++++++++++++++++++++++++++++++++++++

If one gears a clock motor low enuff...
it is said that one could pull the earth off axis.
Hardly a desireable speed for a prop.

There is no free lunch where torque is concerned.
Best be careful what is implied to the uninformed.

http://vettenet.org/torquehp.html
http://www.carcraft.com/techarticles/868/

P.S.
Rotsa' ruck at the U.S. Pat. Off.


Barnyard BOb --

You lost me. What gearing are you talking about? These motors would be
direct-drive.

Phil

I am much of a lurker here but...It seems to me that a lot of the
naysayers are missing the point that you are proposing to drive -two-
props with -one- motor. There should be at least a break even if not
a savings in weight over -two- motors driving two props. I like
considering off the wall projects and have attempted a few myself,
mostly failures.

Harry K

(Harry K) wrote in message . com...

I am much of a lurker here but...It seems to me that a lot of the
naysayers are missing the point that you are proposing to drive -two-
props with -one- motor. There should be at least a break even if not
a savings in weight over -two- motors driving two props. I like
considering off the wall projects and have attempted a few myself,
mostly failures.


Actually, I'd charaterize it as driving two props with three motors.
Two hydraulic motors direct driving the props and one motor driving
the hydraulics.

I think a mechanical drive, like the chain drive the Wright Bros used,
would be more efficient.

--

FF