drum brake question

Ron Gusack · 06-06-2014, 09:55 PM

Thanks for all the help and tips. I got them on, but had to use one of my old secondary shoes to allow me to get the drum on. The lining was about .050 thinner and the drum went on easy.

The lead edge of the shoe in the primary position would be the edge nearest the top, right?

I put secondaries on the fronts also. The pedal has so little toe play that I feel like I'll have to drive around the pits to get used to it. Is there a spec for free travel on the brake pedal?

Ron Gusack · 06-09-2014, 10:50 PM

It's like a different car. Held 3200 easily. If I deep stage and launch in the
3-3200 range my lights are respectable. Thanks for all the helpful tips.

G Anderson · 08-20-2014, 08:57 PM

Ron:what brand of brake shoes and what type of lining are you using ? Thanks Greg

John Leichtamer Jr · 08-21-2014, 01:26 PM

If your using an e-brake make sure the cable is letting the lever return fully.

Hammer

Ron Gusack · 08-21-2014, 03:23 PM

I used Bendix shoes, part number 245 and 246 that have organic linings. I talked to Bendix and the lining material varies depending on when the shoes were made. They all have some metal in them according to the tech I talked to. When I got these I stuck a magnet on them and it barely had any pull.

The downside for me was that I had lots of vibration after the finish line if I put a little to much pressure on the pedal. I was advised to run the front brakes the standard way and that fixed the vibration, but now the car creeps through the beams again.

There's no E-brake on the car.

Jim Cimarolli · 08-21-2014, 06:17 PM

Are you using the stock 9 1/2 inch rear brakes?
You can get an 11 inch rear brake set-up off of a Monte Carlo, or a GM mid sized car of the same body designation. I got a set off of a 77 Pontiac LeMans.

Run to Rund · 08-22-2014, 10:35 AM

Try some custom linings with a better coefficient of friction, rather than using standard low quality linings and more lining surface area. See my post about Ott's use of premium Abex linings. Hopefully that will help you. Also, you can't expect optimum performance before the linings are fully seated (worn in) to the drums.

bigfoot584 · 08-25-2014, 07:16 PM

Quote:

Originally Posted by Ron Gusack

Thanks for all the help and tips. I got them on, but had to use one of my old secondary shoes to allow me to get the drum on. The lining was about .050 thinner and the drum went on easy.

The lead edge of the shoe in the primary position would be the edge nearest the top, right?

I put secondaries on the fronts also. The pedal has so little toe play that I feel like I'll have to drive around the pits to get used to it. Is there a spec for free travel on the brake pedal?

The leading edge of the primary shoe is top of shoe towards front of the car, you want to be sure master is fully returned, then you should have approx. 1/4" free play,
Ron, what master are you using now do you know what piston size is ?

bigfoot584 · 08-25-2014, 09:00 PM

Ron have you ever given thought to running two linelocs, it's
been done with success.

Ron Gusack · 08-26-2014, 10:24 AM

I only use the lineloc in the water.

I don't remember what MC is on the car. I think it's the manual cylinder for a 70 Nova as are the wheel cylinders.

06-06-2014, 09:55 PM	#1
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: drum brake question Thanks for all the help and tips. I got them on, but had to use one of my old secondary shoes to allow me to get the drum on. The lining was about .050 thinner and the drum went on easy. The lead edge of the shoe in the primary position would be the edge nearest the top, right? I put secondaries on the fronts also. The pedal has so little toe play that I feel like I'll have to drive around the pits to get used to it. Is there a spec for free travel on the brake pedal?

06-09-2014, 10:50 PM	#2
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: drum brake question It's like a different car. Held 3200 easily. If I deep stage and launch in the 3-3200 range my lights are respectable. Thanks for all the helpful tips.

08-20-2014, 08:57 PM	#3
G Anderson Member Join Date: Dec 2009 Location: Iowa Posts: 105 Likes: 13 Liked 4 Times in 3 Posts	Re: drum brake question Ron:what brand of brake shoes and what type of lining are you using ? Thanks Greg

08-21-2014, 01:26 PM	#4
John Leichtamer Jr Senior Member Join Date: Sep 2006 Location: Orange City Fl Posts: 764 Likes: 0 Liked 0 Times in 0 Posts	Re: drum brake question If your using an e-brake make sure the cable is letting the lever return fully. Hammer

08-21-2014, 03:23 PM	#5
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: drum brake question I used Bendix shoes, part number 245 and 246 that have organic linings. I talked to Bendix and the lining material varies depending on when the shoes were made. They all have some metal in them according to the tech I talked to. When I got these I stuck a magnet on them and it barely had any pull. The downside for me was that I had lots of vibration after the finish line if I put a little to much pressure on the pedal. I was advised to run the front brakes the standard way and that fixed the vibration, but now the car creeps through the beams again. There's no E-brake on the car.

08-21-2014, 06:17 PM	#6
Jim Cimarolli Senior Member Join Date: Mar 2002 Location: Sulphur Springs Texas Posts: 743 Likes: 146 Liked 166 Times in 46 Posts	Re: drum brake question Are you using the stock 9 1/2 inch rear brakes? You can get an 11 inch rear brake set-up off of a Monte Carlo, or a GM mid sized car of the same body designation. I got a set off of a 77 Pontiac LeMans.

08-22-2014, 10:35 AM	#7
Run to Rund Senior Member Join Date: Sep 2007 Location: Henderson, NV Posts: 583 Likes: 8 Liked 54 Times in 27 Posts	Re: drum brake question Try some custom linings with a better coefficient of friction, rather than using standard low quality linings and more lining surface area. See my post about Ott's use of premium Abex linings. Hopefully that will help you. Also, you can't expect optimum performance before the linings are fully seated (worn in) to the drums.

08-25-2014, 09:00 PM	#9
bigfoot584 Junior Member Join Date: Jun 2014 Posts: 43 Likes: 0 Liked 0 Times in 0 Posts	Re: drum brake question Ron have you ever given thought to running two linelocs, it's been done with success.

08-26-2014, 10:24 AM	#10
Ron Gusack Member Join Date: Feb 2009 Posts: 244 Likes: 1 Liked 7 Times in 6 Posts	Re: drum brake question I only use the lineloc in the water. I don't remember what MC is on the car. I think it's the manual cylinder for a 70 Nova as are the wheel cylinders.