Tire rubbing

V

vern hodgson

Well-known member
When I turn the wheel real sharp my tires rub the brake rods. Where should I look for the cause? Rods appear to be connected correctly?? 29 special coupe.
 
Look at your kingpin lock bolts.They are supposed to have a long nut,which are the spindle stop.Sometimes they have been replaced by a plain nut.Quickest,easiest thing to look for.
 
The replacement tires currently available for our Model As are bigger than the original tires- taller and wider. I think this leads to the brake rod interference on full lock.
 
Keith True said:
Look at your kingpin lock bolts.They are supposed to have a long nut,which are the spindle stop.Sometimes they have been replaced by a plain nut.Quickest,easiest thing to look for.
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Pardon my foggy brain, but kingpin or spindle?? Enlighten me please! Thanks.
 
vern hodgson said:
Pardon my foggy brain, but kingpin or spindle?? Enlighten me please! Thanks.
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I don't have a picture but most of the vendors have 'exploded' views of major assemblies in their catalogs. Look up spindle and it should show the spindle bolt.

The vendor catalogs have a wealth of info in them. I think MAC's has one of the best. Bring it on... :p:p
 
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Another cause, and one which my avatar truck suffered with for a while is the dreaded "fat driver syndrome." Not that you're fat, but 80 year and multiple drivers and all that repeated loading on the driver side spring side has caused the spring to "weaken."

A new spring may solve it. Some reverse the spring (to do this right requires removal of the clamps and turning them around too.)

Or - more remote possibility, a bent frame. Can be less than 1/2" bend.

For a while in the 70s the Kingpin Kits included matching wedges which had only a single standard nut to be used to retain the wedges. If your front end was rebuilt in this time-frame, this may be the culprit.

Joe K
 
whirnot said:
The bolt that locks the kingpin into the axle. The nut should be over an inch long.
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FWIW, That bolt is a "proper" cotter pin. It seems that over time, the term has been corrupted to include what has always been known as a split pin. There are other examples of how terms have morphed into something else over the years and these changes seem to be different in different countries.
 
Will-N is right on, the new tires are fatter and the rub a the rod. you can add a couple lock washers behind the king pin lock nut and that will stop the front end from turning so far.
 
In addition to the long nut mentioned above, make sure the lock washer is behind the nut. Even a missing lock washer can cause the tires to rub the brake rods.
 
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