Front disc brake conversion

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Front disc brake conversion

Postby Bubby0962 » Sat Apr 13, 2013 5:42 pm

Have done a front disc brake conversion and added an aftermarket tube shock system. Now the flexible brake line is rubbing on the shocks. Does anyone have a fix for this?
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Re: Front disc brake conversion

Postby Ragnars-Frogeye » Sun Jun 09, 2013 12:22 pm

Hello Bubby,
I'm just converting form drums to discs. On the backside there is an angled part you have to screw to the hub. This will support the flexible hose at the point where you screw it into the calliper. May be that will eliminate your problem.
I've come around here because I've a problem to. I use the original 3.5 inch wheels with 155R80 tires. The right side is ready now and the tire grinds at the body. I can't imagine why.
Can you perhaps tell me whether I have to change to the newer steering lever (the number are BTA 648 / BTA 649) to solve my problem.

hope we can help us
Greetings from Germany

Ragnar
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Re: Front disc brake conversion

Postby Charlie Tolman » Sun Jun 09, 2013 11:56 pm

I am not quite sure what you mean, when "the tire grinds at the body".
The tire is touching the sheet metal of the fender ?

Is the upper trunnion installed backwards, generating a large positive camber ?

Does the end of the steering arm contact the wheel ?

Disk brakes will increase the front track width by 0.7", total, as compared to drum brakes, but this usually does not create a problem with the tire touching the fender.

Charlie T.
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Re: Front disc brake conversion

Postby Ragnars-Frogeye » Mon Jun 10, 2013 3:17 pm

Hello Charlie T.

Grinding shall mean: the tire hits the body while driving, like shaving the beard.

the upper trunnion is the right way round! It's not grinding at the fender just the opposite.
Sitting in the car, steering complete to the right and the tire grinds at the body with its inner side. The point it grinds is the part of the body that was later doubled to give more strength to the body.
This metal sheet is welded to the footwell (?) and there is the point it grinds.
As I found the BTA ones in my garage I'm just fitting them. The steering lever BTA and the older ones are different in length.
So I'm looking forward to solve my problem.


Sitting in the sun and mourning of not being able to drive.
Greetings from Germany

Ragnar
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Re: Front disc brake conversion

Postby Charlie Tolman » Tue Jun 11, 2013 12:50 am

It appears that the front wheel / tire is turning too far (excessive steering angle).
Use the steering arm that is the longest, which should reduce the angle of wheel turning.

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Re: Front disc brake conversion

Postby Ragnars-Frogeye » Fri Jun 14, 2013 3:45 pm

Hallo Charly,
my problem is solved now.
Yesterday I finished the left side with the BTA steering lever. At last the the wheel and it grinds :cry:
Today I changed the steering lever old (it's an ATA) on the right side to the newer BTA, no grinding :D :D
So I will finish the conversion tomorrow I hope. I will use Automec silicon brake fluid.

What about your rubbing brake hose?
Greetings from Germany

Ragnar
http://www.ragnars-frosch.de
AN5L-1443
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