Merged: Threads on Shinn brakes

[taylorcraftbc65]

Bob's answer

Bob,
I'm not sure what it is you want a picture of. If I look to my left,
I see three of a roe of five quanset hangers, the middle of which houses my Avenger ultralight. If I look to my right, I see a restored Provost jet, parked in front of a Vickers Varsity, beyond
which is a 7,000 foot runway. I have not yet figured out how to
load photo's onto your site. If I could do that, than in a few
days when I get my film developed, I would send some photo's
of the brake cable routing, and horseshoe/saddle assy off my
right brake. Something is not right there. On the left brake, the
horseshoe "cam" sits on the top of the saddle on one side,
and on the bottom of the saddle on the other side of the
saddle. But on the right brake, both "cams" of the horseshoe
are on the bottom, with the horseshoe wedged in so well,
I can't get it out. ?????
I know some are going to say this should be in the brakes
section, but this is just part of an answer to bob's question.
As soon as I can get a photo of my plane test loaded onto
the site, then I'll put the brake photo's in the brake section,
and then I can benifit from the experience that abounds
on this site. So help me, if I have to dismantle the brakes on
both sides, and fly it without brakes, I'll be there in MAY.
Please make ALL comments on my description of my brakes
on a thread on B series brakes. Sabrina

[paulp]

silly questions

Sabrina,

The only dumb question is the un-asked question. I will guarntee that any questions that you or anyone else asks, are the same questions that a whole bunch of others have.

My advise is "ask away" no matter how rudimentary it may seem. I think that you will find that virtually everyone on this site will be happy to respond in a positive fashion.(besides that, I'll get to learn too & I need all the help that I can get!!!)

[David Price]

One thing I found, is that if we want it to deceive us, it will. If we are looking for something, we shall find it.The soluation ,just as the problem, lies before our eyes.
All is not lost. We are in the company of the "RENOUND MENTORS"
of TAYLORCRAFT and TAYLORCRAFTNESS!

As always,
lurking and learning.

[Robert Lees]

Shinn Brakes

[Deleted by RL because I think I've really got this thing Alpha over Tango]

[taylorcraftbc65]

Shinn brakes

Dear robert,
This is why the plane failed it's annual four years ago. The IA
heard about the plane having uneven braking, and without
knowing exactly why, faild the aircraft. At the time, the owner
also had an L-5, a C-140, a Starduster, and an RV-3. He just
put the Taylorcraft on "hanger Queen" status and there it sat,
in a hanger untill I bought it 2 1/2 months ago. Nobody here
underatands the brakes, but when I inspected both sides, and
found them not to be mirrior images of each other, I knew
something was wrong, and put my findings up on the site
yesterday. I have since tried to un-wedge the "horseshoe" out
from the saddle holding the saddle in a vice, and pulling,
prying, yanking on the horseshoe all to no avail. I'm afraid that
the only way to get the horseshoe out of the saddle without
damaging the saddle, is to cut the horseshoe. Upon looking
at the other side, I noticed that someone had tried to grind
a different profile into the cam surface of that horseshoe.
Thanks for the photo, have fun in the land of the Morris
Garage Motorcars. Sabrina

[Robert Lees]

Sabrina,

rather than cut the horseshoe, which is cast, can you cut the saddle, which can be re-welded back up again?

Just grind back one of the welds to provide a bit more movement for your prying.

[Robert Lees]

Sabrina, I think also that there is a right and wrong way to have the cast "horseshoe" mounted within the saddle. The curved surfaces of the "cams" must provide the correct movement against the shoes.

Rob

[taylorcraftbc65]

Grinding weld

Robert,
I would do that, except that the horseshoe has had it's cam surfaces ground to a radical profile, and as such, probably
should not be used. Also, I would always worry about the
re-welded saddle, which is odd, because I have an S-1 Pitts
fuselage that I welded up from a stack of tubing. I guess it's
just that if the horseshoe is questionable because of it's
modification, why not cut it, instead of modify, ( grind and
re-weld ) the saddle and then still throw out the horseshoe?
Whats with the dancing banana? You keep this up, and
people will call you the 'nanner gnat. Sabrina

[Robert Lees]

Don't like the banana? How about pink elephant.

[crispy critter]

Wishbone(horse shoe)

Sabrina,
I'm going up to see Forrest tuesday if the weather holds,if not then I'll go the first day the weather lets me.I talked to Forrest and he is pretty sure that he's got them.I don't think I can help you with the springs unless I can match them up with something from the auto parts store,ooops,did I just say that .What size brake cables do you need and how long?

[Robert Lees]

Sabrina:

I made an error in my post (and the photo) that I posted Friday 13th. That's why I deleted it. I now know the answer, and I will correct it next week, with the correct photo.

Rob

[braceville]

Brake Parts

Sky bound people helped me out last year and they are great people just sometimes too busy and may take a second call attach is last years price list for Taylorcraft brake parts. Dan

[edited by RL to reduce image size]

[Robert Lees]

[Corrected text and diagram previously posted then deleted by me on Friday 13 Feb 2004]


Sabrina,

One end of the wishbone (horseshoe) piece is indeed
underneath the frame, and the other is above.

In this photo of the right gear leg, the aft end of the
wishbone (at Arrow 1) lies above the frame (saddle). This
aft end of the wishbone moves the aft end of the upper brake
shoe out into contact with the drum.

The other end of the upper brake shoe (at Arrow 2) is in
effect fixed, except that this is where the wedge adjuster
can be used to adjust the resting position of the shoe.

The lower brake shoe operates similarly, except that the
wishbone lies beneath the frame.

The whole assembly is repeated for the port undercarriage
leg, but it is of course a "mirror image" because the wheel
rotates the other direction (relatively).

The little sketch below the photo gives the idea (I hope)

Rob

[taylorcraftbc65]

Shinn Brakes

Crispy critter,
Don't worry about the springs, I can get them here. The cables
should be no problem either, but I DO need some information on them.
The cables that are currently in the plane are 1/4 inch in diameter, I know that's wrong. In an earlier post, someone wrote
that while the stock cables were 1/8 inch, he replaced them with
3/32 inch cables, and they have performed flawlessly. Should
I get regular steel, or stainless. I know that the stainless is
stronger, but is it as pliable? The cables that are on now have
bends in them that remain there when I start to apply the brakes.
they only straighten out when serious pressure is applied. I
also remember reading in an old ultralight designers manual
that there are two different ways a cable is constructed from
wire. One is stronger, ( wing cables ), and the other is more
flexible, ( control cables ), but I forget which cross section is
which. I would like to use stainless cable due to it's strength,
but not if it's going to kink on me.
If you guys send me those horseshoes, tell me how much
you want for them, you're going to have to replenish your
own supply as soon as the factory starts building them, and
that costs money.
The address to ship the stuff to is: Sabrina Hill
C/O West Texas Airport
1345 Aircoupe
El Paso, Tx. 79928
The phone number here is (915) 852-3554. That number
is good 24 hours as I live on the airport, and have the same
line in my house. I'll answer it West Texas Airport, even at night.
Sabrina

[Forrest Barber]

Wow wish I was down there , now I see said the Blind Man...this is Forrest back from a week of Hell capped off with my FIRC ( Flight Instructor Renewal).
Sabrina just ask away we will snicker and answer! That is the reason for the forumn....Thank YOU Robert for all the help. It was 0 here last night, we are going away today and I will try to photo the stuff on the brakes tomorrow. I see we really need to have these forums at the gatherings.....brakes are real simple once you SEE them....