Need idea on parking brake install

alpinelakespilot2000 · #1 03-13-2007, 06:35 PM

I know a lot of builders have installed the parking brake valve in the location noted in the picture below.

Does anyone have any suggestions on how to support/clamp the cable just before it connects to the brake lever? I'm thinking of some sort of angle coming off the top firewall angle (using a piece of 1.75" angle riveted to the firewall stiffener... I would then adel clamp the cable to that angle), but wondering if there are any other more graceful ways.

Thanks

Radomir · #2 03-13-2007, 07:25 PM

Steve, that's what I'm planning on... I don't think there's anything "ungraceful" about that approach... should work just fine..

SebsRV7A · #3 03-13-2007, 08:01 PM

I mounted mine where the flexible hose connections were mounted. Then I braced the parking brake cable with a pair of Adel clamps to one of the flexible brake lines. This reduced the number of fittings by eliminating the connection set up for the flex lines and allowed me to use the supplied flex lines (saved $$). Works good through 100 hours to date.
Hope that helps!

Sebastian Trost
RV-7A QB
Flying!!
Cameron Park, CA (O61)

scard · #4 03-13-2007, 09:18 PM

I made my clamp location integral with the mount (many pictures somewhere on my build log). Next time, I would do a bigger doubler on the firewall to reduce flexing.

N941WR · #5 03-13-2007, 11:09 PM

Steve,

Here is how I solved that problem.

uk_figs · #6 03-14-2007, 08:48 AM

I have mounted the brake valve in the same place and of course the flex hoses supplied with the finish kit are too long by about 8 inches, did most people return these for credit (will Van's do this?) and order shorter hoses or get the hoses shortened locally?

Radomir · #7 03-14-2007, 09:36 AM

Yes, Van's will take them back...

alpinelakespilot2000 · #8 03-14-2007, 11:16 AM

Quote:

Originally Posted by uk_figs

I have mounted the brake valve in the same place and of course the flex hoses supplied with the finish kit are too long by about 8 inches, did most people return these for credit (will Van's do this?) and order shorter hoses or get the hoses shortened locally?

Yes, I am planning to have some hoses made for me to go straight from the rudder pedals directly into the parking break without using elbows. I thought about looping the stock hoses up high and then into the brake, but then I'd have to support them somehow. It's nice to know that I may be able to get Van's to take them back, for partial credit I assume since it was part of the finish kit.

FWIW, here's a pic. of how I'm thinking I'll end up supporting my adel clamp. I'll trim the excess off the angle and then just rivet it to the firewall angle with two 470-4 rivets. For me a piece of 1.5 x 1.5 angle worked perfect. When clamped as is, I've got very smooth travel on my cable with no potential for reversal.

The other option I considered is Bill Repucci's idea pictured above, but Bill is building a tip up. On a slider, the forward ribs go up at an angle to the panel. This would require the piece of angle that Bill is using to be shaped with a couple compound bends. I didn't think I could make it look as nice on the slider version as Bill made it look on the tip up.

Thanks to all for the ideas.

uk_figs · #9 03-15-2007, 06:28 AM

I am building a slider also so your bracket idea should work for me, will an adel clamp hold the cable well enough to stop it sliding?

fodrv7 · #10 03-15-2007, 06:49 AM

I used a section of 'Z' angle to support the cable.

If you do it this way you will also need to remove the lever assembly (to protect the 'O' rings), grind the weld off that attaches the lever to the shaft , rotate the lever 45? and re-weld it; in order to have it function in the vertical.

Pete.