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  #21  
Old 05-10-2013, 05:47 AM
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rv7boy rv7boy is offline
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Wow, this is one of the first threads I read this morning, and I am touched by the outpouring of concern among the VAF family.
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  #22  
Old 05-10-2013, 06:41 AM
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LifeofReiley LifeofReiley is offline
 
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Quote:
Originally Posted by aturner View Post
Greg, here is the link to the RVator story about Carl Bell and how me modified his RV-7. It has some nice photos.

http://www.vansaircraft.com/public/R...010-RVator.pdf

-Andy
Greg,

This is the same system I brought up earlier. I put Carl Bell and Jim Hard together back when Carl was looking for braking solutions... So we know the system works on at least two RV's.
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  #23  
Old 05-10-2013, 06:45 AM
VPYVO VPYVO is offline
 
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Default Hand controls

http://www.wheelieswithwings.com.au/Foxbat.html
Hi Greg I am Chairman of Wheelies with Wings in Australia.
We have given learn to fly moivational scholarshps to over 50 disabled people. There are different bolt on hand controls. One of our many Oz wheelchair pilots flies a Bonanza. pics on website.

the link above shows the setup on the Foxbat aircraft we use.
Similar brakes setup to the pics Pierre posted but the rudders are controlled by left right movement of the throttle lever.
No worres you will find a setup that suits you if the leg doesnt come right.
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  #24  
Old 05-10-2013, 06:55 AM
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Greg,

Just a hunch, but it sounds like your father in law thinks selling your airplane will solve two problems- it's way to help you pay for lost income and a way to get rid of something he's probably always feared.

We see it as a precious tool for a fellow pilot's recovery and return to normal life.

I grew up watching a local builder/pilot with polio fly in and out of our model airplane strip with his Kolb Firestar. Though he could barely walk with a cane, he flew that airplane like it was an extension of himself. He belonged in the sky. You will figure it out!
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  #25  
Old 05-10-2013, 08:33 AM
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Default We can do the mod.

Greg, I spoke with my buddy, Ray Lawrence, a bit ago and he says he'd be glad to do the mods for you. He runs an RV builder-assist facility and has built 20 or so RV-s...all models.

He's familiar with Carl Bell's airplane and has seen it up close.

Ray's located in Sandersville, Ga (OKZ).

Best,
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  #26  
Old 05-10-2013, 11:52 AM
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Snowflake Snowflake is offline
 
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Quote:
Originally Posted by VPYVO View Post
the link above shows the setup on the Foxbat aircraft we use.
Similar brakes setup to the pics Pierre posted but the rudders are controlled by left right movement of the throttle lever.
Rob, unless i'm mistaken, the brakes on the Foxbat look like they are a single master cylinder driving both wheels... Is that correct? Do you have any differential braking on the Foxbat?

It looks like it has a steerable nosewheel as well, which on the ground would eliminate some/most need for differential braking. On the RV with the castering nose/tail wheels, differential braking is a must.

Looking at the two side-by-sides shown so far, and knowing that my RV only has brakes in the pilot's seat, I wonder if it would make sense to remove the brake lines/pistons/pedals from the pilot's seat, and only have them in the passenger seat and on the hand controls. That would save the weight of the brakes the pilot can't use anwyay, and reduce system complexity. If one wanted to convert back to a conventional RV later, they could add the brake pedals when they remove the hand controls.

I seem to recall seeing a system that had differential brakes *and* rudder controls on one center-mounted control. But I forget where I saw it now, or how it worked. I'll look further.
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  #27  
Old 05-10-2013, 02:45 PM
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Greg, I admire your positive attitude.

As I study the excellent post from Pierre with the interesting bellcrank mechanism and pedal mod allowing the pilot with the good leg to push and pull the rudder pedal, I am reminded of a recent post from a Frenchman named Antoine Garcia who proposed a pair of gears on the rudder pedal tubes which accomplish the EXACT SAME FUNCTION, but do it in perhaps a more elegant way, with fewer parts and lighter weight. He was poo-pooed a bit for solving what some felt was a non-existent problem, but it does indeed solve a problem for Greg! Some raised concerns about FOD falling into the gears which could very easily be addressed with a sheet metal cover over them. His phots are as follows:







[/quote]
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  #28  
Old 05-10-2013, 03:24 PM
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Quote:
Originally Posted by Noah View Post
Greg, I admire your positive attitude.

As I study the excellent post from Pierre with the interesting bellcrank mechanism and pedal mod allowing the pilot with the good leg to push and pull the rudder pedal, I am reminded of a recent post from a Frenchman named Antoine Garcia who proposed a pair of gears on the rudder pedal tubes which accomplish the EXACT SAME FUNCTION, but do it in perhaps a more elegant way, with fewer parts and lighter weight. He was poo-pooed a bit for solving what some felt was a non-existent problem, but it does indeed solve a problem for Greg! Some raised concerns about FOD falling into the gears which could very easily be addressed with a sheet metal cover over them. His phots are as follows:
The reenforcement gussets in the rudder pedal assembly are expecting the loads to be induced directly at the pedal. If this is changed, then changes to the actual torque tube pedal assembly will likely be needed also.
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  #29  
Old 05-10-2013, 03:49 PM
algrajek algrajek is offline
 
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Greg:
So Very sorry to hear of your accident! I ride and fly as well. Its a shame there are so many Jerks out there that dont watch out for Bikes! Dont give up hope.
This great VAF community will see to it that you WILL fly again. If I can be of any help at all with the mod, or bringing the plane somewhere to get the work done, let me know.
I am just up the road in Lexington.
Al "Nordo" Grajejk
algrajek@msn.com
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  #30  
Old 05-10-2013, 08:27 PM
ty1295 ty1295 is offline
 
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Good luck on your next life adventure, the mind is much more powerful than any physical limitation any of us have.

Not sure if it helps, but look into hand brake master cylinders used in sandrails. The braking issue is easy to solve. Neal is one brand.

Best of luck.
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