I have a 55 f-100 power front disc brakes and toyota power steering. The straight axle has new king pins, tie rod ends and a heavy duty tie rod. The springs have new bushings and pins. I have had an indicator on the front tire and the streeing wheel just takes a small movement to move the indicator. So i would consider it fairly tight.
What i would like to know is why under heavy braking I have to steer the truck like a race car. Now mind you I don't drive like Mario Andrette. I have installed a 4 degree wedge between the springs and axle. I just did that to make it steer better, and change the anti-dive angle. Still a lot of bump steer.
Anybody have any ideas why it doesn;t want to go straight while braking?

 

I have to same set-up but I don't have a steering issue but then again I don't brake hard, when I got out today i'll brake hard to see of it wanders. What type M/C are you using and where is it located. I have an 85 Ranger mounted on the firewall, with a ford combination disc/drum valve.

 

I just came off a 30+ miles trip braking hard several times and it goes straight. One of your calipers could be sticking...

 

Sounds like an alignment issue. If you are running radials and using the original OEM specs (which were for stiff bias ply tires) that could be the issue.

 

Well I am running radials 235/70/r15 front and rear. the truck came that way. I have had it aligned but don;t know what specs they used. The stcking caliper could be an issue. I have noticed that when i release the brakes, it seem like it takes a second to totally release. I have a corvette type M/C and is mounted on the firewall. One thig I didn't do was add the inline brake valves. I have no idea if they work but it could be part of the sticking issue. I forgot to ad that I do have a combination valve installed.

Thanks for any ideas
Dennis

 

You don't need a brake valve since you have the combiation valve and it's not mounted under the floor so you should be OK with the way you have it set up. Jack the front up and press the brakes then spin the tires you may be able to see if a caliper is sticking.