REFLECTOR: air in break line

[Peter Braswell]

By chance is the Toe Brake set up easier/harder than the older style brake
system?

I was also wondering how many builders opted for stainless lines instead of
the nylo-flow and what parts they used - did you plumb the whole system
w/stainless or just the chunk that runs down the gear leg?  Nylo verses
stainless was a big issue on the Glastar also.  Lot's of builders went with
the SS while I just stuck with the nylo and I've never had a problem.

Peter

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On Mon, Apr 18, 2011 at 11:38 AM, <nmflyer1 at aol.com> wrote:

> Right again Jim,
>
> I "bench Bled" my calipers Before I installed them.
>
> I also gravity filled the lines before I hooked up the calipers.
>
> Then I hooked up the brake line to the calipers and bled from the bottom up
> (with the for-mentioned oil can trick).
>
> Now, I have a different style of master cylinders, but I accomplished the
> whole thing in about an hour. Seems fine now.
>
> Kurt
>
>
>
> -----Original Message-----
> From: Jim Agnew <jim_agnew_2 at yahoo.com>
> To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> Sent: Mon, Apr 18, 2011 9:12 am
> Subject: Re: REFLECTOR: air in break line
>
>   Before you go nuts trying to bleed the brakes take a look at the
> attached diagram for Matco brakes.  You will notice that the connections
> between the pistons are not in a straight line and require you to fill from
> the bottom piston up while adjusting the caliper position to allow the air
> trapped in the piston to escape up.  Note the pistons are hollow so the
> process of keeping the connections vertical also requires rocking the
> caliper side to side at the same time.
>
> Jim
>
> James F. Agnew
> Jim_Agnew_2 at Yahoo.Com
> Tampa, FL
> Velocity 173 Elite Aircraft Completed & Flying
>
>
>  ------------------------------
> *From:* Jerry Brainard <Jerry at jlbent.com>
> *To:* Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
> *Sent:* Mon, April 18, 2011 9:49:44 AM
> *Subject:* Re: REFLECTOR: air in break line
>
>  Just to be complete, did you use the little tubing inserts for the brake
> line fittings?  They go into the line to strengthen the tube under the
> clamping force of the brass ferrule.
>
> Do you have a parking brake?  We were never able to successfully bleed the
> brakes with that installed.  I assume it was the installation position
> because others have been successful.
>
> Another consideration might be to elevate the nose to help the air to move
> to the cylinders.
>
> Bleeding the brakes can be one of the most maddening things you will do on
> the Velocity.
>
>  Jerry Brainard
> Jerry at JLBEnt.com
>   ------------------------------
>  *From:* reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org<reflector-bounces at tvbf.org?>]
> *On Behalf Of *Barry Gibbons
> *Sent:* Sunday, April 17, 2011 9:48 PM
> *To:* 'Velocity Aircraft Owners and Builders list'
> *Subject:* REFLECTOR: air in break line
>
> Hello
> For about two month I have been trying to bleed my left break. I replace
> the master cly. Three times, rebuild the caliber twice; replace break line
> to gear leg and still getting air in the line. No sign of fluid leak. It
> looks like it coming from the master cyl. After I reverse flow and no
> bubbles I stop. Then when I push on the brake you can see a bubble come from
> Master cyl. You wait until the next day you can see more air in the line.
> But changing it three times it has to be something else. Any suggestion on
> what I can try or where the air might be coming in from. I have done reverse
> flow and pumping break and bleeding at caliper.
> Barry
>
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