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Jamar Brake Cylinder

 
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kheindl(at)msn.com
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PostPosted: Sat Jun 30, 2018 5:12 am    Post subject: Jamar Brake Cylinder Reply with quote

Where can I buy a Jamar brake cylinder and seals ? I don't see it on the Jamar website.
I bought seals with pistons from CBPerformance, but that assembly is slightly longer and may block the connecting hole between the cylnders.
I am filling the lines from the bottom up, but I have no pressure on one side. I never had this much trouble before.
Thank you for any help,
Karl


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Ivor



Joined: 23 Jul 2015
Posts: 39

PostPosted: Sat Jun 30, 2018 7:17 am    Post subject: Re: Jamar Brake Cylinder Reply with quote

Too be totally honest the Jamar cylinder isn’t fit for purpose!!
Crap is a stronger word i would normally use but i don’t want to upset
the gentile folk on this forum,
I have had three on my aircraft, the first one would lose a circuit when it wanted and had me of the runway twice, the second one wasn’t much better
always loosing pressure but with no leaks, You could pump it up to get a hard
handle before landing,
the third one i completely strip, changed all the seals, honed the bores cleansed it to a inch of its life, bleed it for an hour using every means at my
disposal, ( considerably after 55 years in the motor trade) and i still wasn’t happy with the pressure i was getting,
so bit the bullet and brought two matco cylinders and replaced the awful
Jamar,
the Matco cylinders have been working fine now for Six years, I personally
wouldn’t take the chance with a Jamar, going off the runway can be
decremental to your health


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kheindl(at)msn.com
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PostPosted: Sat Jun 30, 2018 12:31 pm    Post subject: Jamar Brake Cylinder Reply with quote

Ivor,
I am sure you are right. What is the Matco part number and how difficult is it to fit them ?

I see apicture in the A.S. catalogue, but I don't see the attachment points


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budyerly(at)msn.com
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PostPosted: Sat Jun 30, 2018 6:32 pm    Post subject: Jamar Brake Cylinder Reply with quote

Carl,

The Jamar brake is a steering part. See jamarperformance.com, steering products.

It is a wheel steering for drifting and the like.


New and rebuild kits are there.


Bud Yerly

Custom Flight Creations


From: owner-europa-list-server(at)matronics.com <owner-europa-list-server(at)matronics.com> on behalf of Karl Heindl <kheindl(at)msn.com>
Sent: Saturday, June 30, 2018 8:10:01 AM
To: europa-list(at)matronics.com
Subject: Jamar Brake Cylinder


Where can I buy a Jamar brake cylinder and seals ? I don't see it on the Jamar website.
I bought seals with pistons from CBPerformance, but that assembly is slightly longer and may block the connecting hole between the cylnders.
I am filling the lines from the bottom up, but I have no pressure on one side. I never had this much trouble before.
Thank you for any help,
Karl


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budyerly(at)msn.com
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PostPosted: Sat Jun 30, 2018 6:47 pm    Post subject: Jamar Brake Cylinder Reply with quote

Carl,

Also,

Pull the master and bench check. I fill it completely, then check your rebuild.

Bleeding difficulty is often due to the small bleed hole.


My website has the bleed procedure. If using silicone fluid or Dot 5, getting bubbles to move is a pain. You have to pull the master out to bleed, hold one handle back etc. Once bled they are quite firm.


I thought going to Matco solved everything, but not so. Brakes are a pain. Even Matco masters can have issues with seals. I had a brand new Matco constantly keep a bubble, and had to pull the master and rock it. George at Matco even commented that if installed horizontal, they may require rocking to get a slick fluids bubble to clear. Nothing is easy or full proof it seems.


Bud Yerly

Custom Flight Creations


From: owner-europa-list-server(at)matronics.com <owner-europa-list-server(at)matronics.com> on behalf of Karl Heindl <kheindl(at)msn.com>
Sent: Saturday, June 30, 2018 8:10:01 AM
To: europa-list(at)matronics.com
Subject: Jamar Brake Cylinder


Where can I buy a Jamar brake cylinder and seals ? I don't see it on the Jamar website.
I bought seals with pistons from CBPerformance, but that assembly is slightly longer and may block the connecting hole between the cylnders.
I am filling the lines from the bottom up, but I have no pressure on one side. I never had this much trouble before.
Thank you for any help,
Karl


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Ivor



Joined: 23 Jul 2015
Posts: 39

PostPosted: Sun Jul 01, 2018 3:53 am    Post subject: Re: Jamar Brake Cylinder Reply with quote

Bud is fully entitled to his views....but my first Jamar cylinder had seals that had a mixture of Buna-N and EPDM rubber, only useable if you had silicone
fluid, the internal build quality is abysmal, If they had spent more on that
then the external chrome plating it may have been more useful
that a chocolate teapot, Obviously this is my opinion,
Karl i brought the Matco cylinders as a kit from Europa to replace the Jamar
so cannot give you much more information except they were easy to fit
and bleed of air in five minutes flat,


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dpark748(at)me.com
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PostPosted: Sun Jul 01, 2018 4:07 am    Post subject: Jamar Brake Cylinder Reply with quote

After conversion from mono to trike i fitted another Matco in parallel to original with longer bolts and appropriate spacers and a alloy angle fitted outboard of the second Matco to the tunnel behind Matcos to prevent twisting when applying brake pressure. Worked perfectly for 4 years. Access for bleeding from cockpit.
Regards
Dave Park
Quote:
On 1 Jul 2018, at 12:54, Ivor <g-iver(at)live.co.uk> wrote:



Bud is fully entitled to his views....but my first Jamar cylinder had seals that had a mixture of Buna-N and EPDM rubber, only useable if you had silicone
fluid, the internal build quality is abysmal, If they had spent more on that
then the external chrome plating it may have been more useful
that a chocolate teapot, Obviously this is my opinion,
Karl i brought the Matco cylinders as a kit from Europa to replace the Jamar
so cannot give you much more information except they were easy to fit
and bleed of air in five minutes flat,




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willydewey



Joined: 24 Sep 2014
Posts: 48
Location: Guildford Surrey United Kingdom

PostPosted: Sun Jul 01, 2018 7:38 am    Post subject: Re: Jamar Brake Cylinder Reply with quote

I replaced the Janmar Brakes with Matco soon after I bought my aircraft
and have not for one minute regretted it..
Perhaps one, we had the same problem with DOT5 and bubbles until I questioned why the reservoir is high up on the firewall So contrary to advice I filled up and forced fluid DOWN to the brakes,.....Bingo worked first time That was 3 years ago and no bubbles or spongy brakes They hold solid at 5000rpm in fine pitch
PS I think the original Janmar brakes were for go-carts


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kheindl(at)msn.com
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PostPosted: Sun Jul 01, 2018 7:42 am    Post subject: Jamar Brake Cylinder Reply with quote

Hi Bud,Ivor,David,
Many thanks for your inputs. It's comforting to know that this is a common problem.
I now recognize the parts on the Jamar website, but the cylinder is out of stock, and perhaps I don't need one anyway. I will have another go at bleeding, using your advice. My installation is good and simple, and I don't want to rush out and spend another few hundred dollars on Matco, if I can help it. Then there is the installation, at the airport, in 40 degree heat. etc


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kheindl(at)msn.com
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PostPosted: Sun Jul 01, 2018 8:29 am    Post subject: Jamar Brake Cylinder Reply with quote

How did you force the fluid down, gravity, or pump ? Iguess it would work with one of the rubber adapters forced into the reservoir opening, the vent hole sealed, and the nipple open with a container to catch the fluid ?




From: owner-europa-list-server(at)matronics.com <owner-europa-list-server(at)matronics.com> on behalf of willydewey <willydewey(at)gmail.com>
Sent: 01 July 2018 16:39
To: europa-list(at)matronics.com
Subject: Re: Jamar Brake Cylinder

--> Europa-List message posted by: "willydewey" <willydewey(at)gmail.com>

I replaced the Janmar Brakes with Matco soon after I bought my aircraft
and have not for one minute regretted it..
Perhaps one, we had the same problem with DOT5 and bubbles until I questioned why the reservoir is high up on the firewall So contrary to advice I filled up and forced fluid DOWN to the brakes,.....Bingo worked first time That was 3 years ago and no bubbles or spongy brakes THe hold solid at 5000rpm in fine pitch

--------
Give a wise man knowledge and he will be yet wiser




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willydewey



Joined: 24 Sep 2014
Posts: 48
Location: Guildford Surrey United Kingdom

PostPosted: Mon Jul 02, 2018 8:19 am    Post subject: Re: Jamar Brake Cylinder Reply with quote

with compressed air from a large tire with the reservoir absolutely topped up It was a one hit solution for me!!
would have been nicer if the reservoir was a tad larger


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