Chris Hoskins invented this power steering device for Canard
nose gear here in NZ. It will work on any nose gear airplane
including you Tango guys. It does an excellent job of damping
in the bargain. In fact a tail dragger would benefit as well.
I am thinking about building one for my RV4. The tail wheel
would be locked straight ahead for landing and then could be
steered back to the hanger. IMHO this is a major development.
Good work Chris. I love it.
Chris is also building his own Ford C6 based six pinion planetary
gear box for his p-ported RX8 engine.
He is using the Ellison copy Rotec carb from OZ.
Paul Lamar In NZ
Paul, if you want hydraulic steering there are several
manufacturers making a sweep cylinder like that. Parker and SMC
come to
mind.
Bill Jepson
Here are some more pictures. It uses a Mercury Marine hydraulic
power pack.
I'll work with Chris to get a schematic.
---------------------------------------------------------
More info. This will work with a simple oil pump made
from extruded pinion wire and a 12 V DC gear motor.
A DPDT steering switch will reverse the direction on the oil pump
to steer left or right.
Klaus told me this is very desirable feature for canard's as one
can exit the runway
on the high speed turn offs at high speed :) No need to steer with
the brakes.
Jim Miller designed Pushy Galore piloted by Bruce Bohannan.
The nose gear was both mechanical steer-able and retractable.
http://www.airventuremuseum.org/collection/aircraft/4Miller-Bohannon%20JM-2%20Pushy%20Galore.asp
BTW Allan Tolle beat Pushy Galore in the dead stop time to climb to
3000 feet with
a 350 HP p-port 13B in an RV3 at Sun & Fun. 59 seconds.
Paul Lamar
Chris,
Needless to say this is a big step for Canards. The
big question is will this unit for nose wheel steering be made available
to all or is this a private invention not for circulation. Money can be
made with this device if you are interested in sharing, just throwing
out a hint. I for one would love to have nose wheel steering for my Cozy
MK IV that I am currently building and I know I am not alone.
Congratulations on your invention, you have literally reinvented the wheel!!
James Ealey
James,
I might be interested in building some if there are enough builders
out there that want one. They are labour intensive things to make as I
don't have any cad gear or nc. I have built in a little bypass to allow
it to be used as a shimmy damper, it should also allow the plane to taxy
easily, the problem I found with the old system on my original Long EZ
was that you had to have so much friction on the damper so as to make it
a bitch to taxy. This system should also address the cross wind problem
on take off (no need to use brakes).
Cheers Chris.
p.s. you are right I did reinvent the nose wheel !
Sign me up for one on my tail dragger.
http://www.proweldperformanceparts.com/id93.html
• 350F Fluid Temperature
• 3 GPM Pump Rate, 50+PSI
• Hardened Bronze Gear Pump Rotors
• 10,000 Hour Rated Dual Ball Bearings
• 10,000 Hour Rated Over-sized Brushes
• Black Anodized Extruded Aluminum Heatsink
• Nickel-plated Pump Head
• Stainless Steel Pump Head Fasteners
• 3/8" NPT F Threaded Pump Head Ports
• -6AN M Nickel-plated Adapters
• Hi-Temp Wiring
• Weatherproof Connectors
• Rubber-isolated Mounting Bracket
• Low-vibration, Quiet
• 6.2" x 4.1" x 4.1" size, 6 lbs
• 12 Volts Nominal *//*
• 6 Amp Nominal
• Two-year Warranty
Paul Lamar
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