Brake shoe material

This forum is dedicated to the Live Steam Hobbyist Community.

Moderators: Harold_V, WJH, cbrew

User avatar
Chris Hollands
Posts: 338
Joined: Thu Mar 26, 2009 8:38 am
Location: Vancouver ,Canada

Re: Brake shoe material

Post by Chris Hollands » Sun Nov 05, 2017 11:26 pm

Here is acouple of photos of the brake linings
Attachments
Brake shoes 1.jpg
Brake shoes 1.jpg (44.15 KiB) Viewed 785 times
brake shoes 2.jpg
brake shoes 2.jpg (39.71 KiB) Viewed 785 times

cp4449
Posts: 493
Joined: Tue Jun 06, 2006 10:54 am
Location: Granada Hills

Re: Brake shoe material

Post by cp4449 » Mon Nov 06, 2017 12:35 am

You could use a piece of hard oak. Cut to profile, glued on. They use oak brake shoes on the cable cars in San francisco
C.P. Mahony
Apparently reinstated 1" Foreman
Los Angeles Live Steamers

User avatar
Harlock
Posts: 3621
Joined: Tue Jan 23, 2007 1:19 am
Contact:

Re: Brake shoe material

Post by Harlock » Wed Nov 08, 2017 6:17 pm

I second aluminum. Barry Hauge switched from bronze to aluminum for a brake kit he made for Steve Easlon's 2 1/2" trucks for that reason. More grip.
San Lorezo Flume & Lumber Co. #2 - "Felton"
Live Steam Photography and more - www.mikemassee.com
Contributing Editor, Live Steam Magazine
Webmaster, Allen Models of Nevada

rkcarguy
Posts: 636
Joined: Tue Aug 22, 2017 10:33 am

Re: Brake shoe material

Post by rkcarguy » Sun May 27, 2018 4:38 pm

I've gotta bump this old thread. To those who used the Mcmaster Carr material, how flexible is it? Did it bend easy enough to JB weld to your shoe and stay on there?
Which product was used?

https://www.mcmaster.com/#brake-lining/=1d10yog

I'm hoping to use this on my freight cars against a 4-1/2" diameter tire.

User avatar
ccvstmr
Posts: 1495
Joined: Sat Jan 04, 2003 10:37 am
Location: New Lenox, IL

Re: Brake shoe material

Post by ccvstmr » Sun May 27, 2018 7:10 pm

rk...have used metal-free brake 'n clutch lining material for years. McMaster only carries the strips down to 3/16" thick. Plenty of wear material there. Could use 1/4" thick material for more "wear time". There are other places where you can find 1/8" thick material (Ebay).

Brake shoes are scored with a saw (hack or band saw). Without the score marks, you end up squeezing out most of the adhesive when clamped. I use 5 minute epoxy to bond friction material to the shoes...usually alum or even bronze. Don't mix too much epoxy at one time. Time flies when you're having fun!
xIMG_6344.JPG
If you're not familiar with the brake shoe casting...this is one of Tom Bee's before he switched over to water jet cut shoes/hangers. This was an older shoe. Original brake lining material was worn...after 15 years of brake service on a propane fuel car that always followed the locomotive. Opted to replace all the brake lining pads. Used a shop knife to cut away the old brake pad material. Made the cut marks on the shoe. Tom has this done now as part of the water jet cutting process.

Have some wood blocks turned to the wheel diameter to clamp the brake shoe, brake material and form all in one assembly. After the glue cures... excess glue and brake pad material is cut off with a sharp shop knife. Sometimes, you might need to bevel the edge that runs in the wheel radius. If not, that too will "wear in" over time. Would rather have the brake pad fully contacting the wheel tread.
xIMG_6349.JPG
The "form surface" on the half round disk was spun with a 2.5 deg taper to match the brake shoe taper. "UP" just tells me which way to align the form block before clamping. Else, the brake pad has a tendency to slide out of position. Don't ask how I know this!

Hope that helps. Carl B.
Life is like a sewer...what you get out of it depends on what you put into it!
I don't walk on water...I just learned where some of the stepping stones are!
I love mankind...it's some of the people I can't stand!

rkcarguy
Posts: 636
Joined: Tue Aug 22, 2017 10:33 am

Re: Brake shoe material

Post by rkcarguy » Mon May 28, 2018 10:31 pm

Thanks for all the information ccv. I've commonly used a rough grinding wheel on the surface or a cut-off wheel to grind a waffle type pattern for the epoxy to grab when working with such things, so no problem there. My biggest concern was just that it was flexible enough to conform to the radius of the wheels/shoes without snapping or having so much springiness that it wouldn't stay attached to the shoe.

rkcarguy
Posts: 636
Joined: Tue Aug 22, 2017 10:33 am

Re: Brake shoe material

Post by rkcarguy » Thu Jun 07, 2018 9:06 pm

I just received my order of friction material from McMaster, the 1-1/2" wide by 3/16". It's very flexible, similar to a stiff rubber sheet, and was the same metal-free lining ccvstmr posted about. Should work great.
I bought 4 pieces 12" long for about $17.

Post Reply