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Control Approach - Rudder pedals

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Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Fri Jul 04, 2008 5:56 am Post subject: Control Approach - Rudder pedals

Earlier this week Paul Grimstad posted a message along with a picture of 

his newly developed rudder pedals for the RV-10. The following day a 

package arrived at the Davis house hold with production model #1. I saw 

Pauls prototype over a year ago at a dinner at his Home in Oregon, and 

persuaded him, that if he ever decided to produce them for others to 

make me his 1st customer. True to his word Paul called and said 'they're 

ready' and my check was in the mail. I finished with the installation 

yesterday, you can read about it on my website.



http://deemsrv10.com/Home-77.htm

http://deemsrv10.com/Home-78.htm

http://deemsrv10.com/Home-78.htm



I've created a picture album as well:



http://deemsrv10.com/album/Control%20Approach%20Rudder-Brake%20Pedals/index.html

Paul has done an EXCEPTIONAL job developing these, all of the pieces are 

CAD designed, The metal parts are all precision machined, or laser cut. 

the welding is done in jigs, the fit is perfect! This is the last 

modification I plan on making (I promise !) I've patiently waited while 

Paul's perfected these, but it's been well worth it.

Deems Davis # 406

'Its all done....Its just not put together'

http://deemsrv10.com/

PS. I've got no financial interest in this, I do count myself as a 

friend of Pauls' and want this to be a sucess for him.

speckter(at)comcast.net
Guest

Posted: Fri Jul 04, 2008 7:33 am Post subject: Control Approach - Rudder pedals

Us big guys with trifocals just hate working under the panel like that.

Looks great, wish they would have been available when I did mine, but the

discomfort of redoing the rudders convinces me to leave well enough alone

and just go flying.



Gary



--

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Fri Jul 04, 2008 8:25 am Post subject: Control Approach - Rudder pedals

Wuss !!!  

I laughed when I read your post. I've got progressives, and with the 

sweat they wouldn't stay put being upside down, and I couldn't crook my 

head back far enough to get them focused. So I hope I've got things 

hooked up right some of it was 'braile'



Deems



do not archive



gary wrote:

 	  Quote: 	
		   



 Us big guys with trifocals just hate working under the panel like that.

speckter(at)comcast.net
Guest

Posted: Fri Jul 04, 2008 9:09 am Post subject: Control Approach - Rudder pedals

I have a pair of glasses that are total close range. Works great until you

try and step off the wing and walk across the hanger.  Might as well be

drunk.



Gary

40274 Flying



--

AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Fri Jul 04, 2008 2:37 pm Post subject: Control Approach - Rudder pedals

Your pictures look like the Matco's bolted right up.  That would mean my

upgrade to Groves should fit fine. It sure looks cleaner.  How much time

do you have into the retro?  Two days after receipt of pedals, Wow and

in that Phoenix heat to boot.



Here is to safer flying without the rats nest of tubing and cylinders

hanging into the cabin.  Too bad the factory doesn't get behind selling

the retro.



John



--

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Sat Jul 05, 2008 4:56 pm Post subject: Control Approach - Rudder pedals

OK, I'll bite, what is it about the Grove brake cyls that make them an 

upgrade? (I can't stand knowing there's a mod/upgrade I haven't considered )



The whole shebang took 12 hours. of that 1 1/2 was removing center 

console and associated electronics.

It took another 1 1/2 hours to remove the old rudder pedals.

fitting the tunnel cover and cutting the slots (took me 3 times) and re 

routing the Scat tubes took 3 hours.

Installing the new pedal assembly and connecting the rudder cables took 

2 hours.

Remounting the brake cylinders took 4 hours



I figure this should be about worst case:

a. I'm slow

b. It was/is 110-112 degrees

c. my panel is 2 inches lower than stock further restricting access

d. I'm fat (but working on it)

e. I'm old (working on it as well but haven't made much progress)



If these were being installed during the build vs a retrofit, without 

the instrument panel or upper fwd fuse in place, it should take no more 

than 2-3 hours total. Given that they come fully assembled, that would 

actually be a time savings over the stock pedals.

Deems Davis # 406

'Its all done....Its just not put together'

http://deemsrv10.com/



John Cox wrote:

 	  Quote: 	
		   



 Your pictures look like the Matco's bolted right up.  That would mean my

 upgrade to Groves should fit fine.

AV8ORJWC

Joined: 13 Jul 2006
Posts: 1149
Location: Aurora, Oregon "Home of VANS"

Posted: Sat Jul 05, 2008 6:08 pm Post subject: Control Approach - Rudder pedals

The Groves had/have improved machining, HD O-rings and could sustain

higher pressure creation. They might have had a slightly larger

capacity.  They were black anodized - not gold (Kool).  They remain the

choice of Lancair builders who are upgrading performance(but that is not

enough after Matco's are installed).  They have a Helper spring on the

outside of the shaft to assist to a Return to No Brake mode.



I have suggested to Paul that a 1/8 Elbow fitting added at the firewall

would assist Retro Builders to redirect Scat tubing away from his

fulcrum arms.  He is considering that.



The DHI lines are a Big Deal.  There have been lots of upgrades from

Nylaflow lines.



Lancairs come across the fence 50% faster than a VANS (in flare) and

more than 60% heavier (with WOW). That all works into the math

calculation for rotor mass, pad surface area and pressure of H-5606.

When the brakes get mushy and the field is short, the operators look to

improved performance.  Lancairs need hard surface and 4,000+.  Tim

wanted Dirt or Grass and 2500 feet.  When there is a cliff, trees or a

dogleg, the improved braking becomes a bigger deal than just HP.

Tim went with dual calipers and 75% more rotor mass (I think 0.435"

rather than 0.250").  I have a firm back east, that grooves my rotors on

the BMWs. The groove is set to minimum caliper width so it is also an

indicator line for rotor replacement.  It allows outgassing from the

heated pads to dissipate and return to conversion of energy mass into

friction and heat.  It is the heat dissipation that is the science.



Hoyt Fleming put NACAs ducts on the side of his wheel pants and cooling

ducts internally like on NASCAR vehicles to direct the flow over the

rotors.  I told John Jessen it is the heat buildup that caused NASCAR to

go to a cool down lap to avoid warping of the rotors from uneven

cooling.  Seems the pads were retaining heat and contributing to rotor

warp.  It is much like the respect pilots should have for turbo oil and

a cooling cycle before shutdown.  Short taxis should be avoided on hot

days.  Land long, taxi back, save rotors and $$$.



John



--

jcumins(at)jcis.net
Guest

Posted: Mon Jul 07, 2008 7:49 am Post subject: Control Approach - Rudder pedals

Looks like I want a set when I get to that part in the build process.  I am

only on page 6-3 of the Vertical Stab but loving every minute of it.



John G. Cumins

40864 Emp build 

 

--

Deems Davis

Joined: 09 Jan 2006
Posts: 925

Posted: Mon Jul 07, 2008 8:26 am Post subject: Control Approach - Rudder pedals

Install them initially during your build and it will be a breeze. You'll 

love them.



Deems



John Cumins wrote:

[quote] 



 Looks like I want a set when I get to that part in the build process.  I am

 only on page 6-3 of the Vertical Stab but loving every minute of it.



 John G. Cumins

 40864 Emp build 

  

 --

Bldgrv10450(at)comcast.ne
Guest

Posted: Mon Jul 07, 2008 12:07 pm Post subject: Control Approach - Rudder pedals

John

Thanks for your approval. I am working on ordering materials for a quanity 

build now.

I'm with you on loving every minute of building this airplane, all be it one 

handed for the time being.

Paul Grimstad



---

Tnelson

Joined: 14 Jun 2008
Posts: 1
Location: Lemoore, Ca

Posted: Tue Jul 15, 2008 3:47 pm Post subject: Re: Control Approach - Rudder pedals

Paul,

I am interested in the pedals. Could you provide contact info?

My email is tnlnelson(at)comcast.net



Thanks,

_________________
Todd

RV-10
Emp Complete
Slow build wings...

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