Front Axle Alignment Tools

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Scott C.
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Front Axle Alignment Tools

Post by Scott C. » Tue Apr 14, 2020 11:45 am

I am wanting to make a set of gage rods for checking the alignment of the front axle to the spindle and perch bores. I am thinking, make a set of cones to fit 1/2" ground rod into the perch bores. Then on the spindle bores 1/2" ground rod slipping through the top hole and machining a step, or taper to fit into the threaded hole on the bottom. How long should I make the gage rods? Does any one have any thoughts, or ideas on this? Does any one have pictures of a set that they can share.

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TRDxB2
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Re: Front Axle Alignment Tools

Post by TRDxB2 » Tue Apr 14, 2020 12:02 pm

Need o search the old forums to see where I got these photos
40416.jpg
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AXLE align.jpg
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RajoRacer
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Re: Front Axle Alignment Tools

Post by RajoRacer » Tue Apr 14, 2020 12:04 pm

This is what I came up with - works quite well.
Attachments
string test.JPG

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Steve Jelf
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Re: Front Axle Alignment Tools

Post by Steve Jelf » Tue Apr 14, 2020 1:07 pm

IMG_0596 copy 2.JPG
Here's the rig Bud Redding uses. Rods through tapered plugs that center in the holes.
The inevitable often happens.
1915 Runabout
1923 Touring


Harry Lillo
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Re: Front Axle Alignment Tools

Post by Harry Lillo » Tue Apr 14, 2020 3:20 pm

I have used twin tapered collars with thumbscrews on 3/8 rods for many years. Very similar to the picture above.
You can tell immediately if the axle is twisted. Very easy and quick to turn out on your lathe.
Harry


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Re: Front Axle Alignment Tools

Post by Allan » Tue Apr 14, 2020 8:22 pm

My rods are at least 18" long. The shorter you make them, the more difficult to ascertain differences in alignment.
Allan from down under.

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Henry K. Lee
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Re: Front Axle Alignment Tools

Post by Henry K. Lee » Tue Apr 14, 2020 8:39 pm

Great Work Guys!

The only thing I would add as my Dad showed me is that once in the vehicle things kinda change from minute differences. I jack mine slightly off the floor, remove the wheels and spindles. Long rod through the king pin holes either by wood dowels or steel rods to set the caster with those BIG MOTHER OF ALL WRENCH BARS! Really makes the difference.

Just trying to Help,

Hank

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