Accessory Front Radius Rod Nuts

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Model T Ford Forum: Forum 2013: Accessory Front Radius Rod Nuts
Top of pagePrevious messageNext messageBottom of page Link to this message  By Nik Martin on Thursday, August 22, 2013 - 11:16 am:

Hello, all. I was wondering what people with accessory lower front radius rods are doing about not being able to key the perch nuts. Adding the thickness of the additional, lower wishbone between the axle and the nut moves the nut down beyond the cotter key hole. Are people running without keys (not locking the nuts), with lock washers (putting fewer nut threads on the perch), or using a thinner nut (again, with less nut engagement)? Right now, I have the first situation. I'm guessing the third option is the best, but I'd like to hear your thoughts before I dink with it. Thanks, Nik - '14 Speedster (but a little later front axle I think)


Top of pagePrevious messageNext messageBottom of page Link to this message  By ROBERT BERGSTADT on Thursday, August 22, 2013 - 11:33 am:

I would grind off part of the nut, you want the cotter keys,Bob


Top of pagePrevious messageNext messageBottom of page Link to this message  By keith g barrier on Thursday, August 22, 2013 - 11:35 am:

High strength thread locker. KB


Top of pagePrevious messageNext messageBottom of page Link to this message  By David Schwab on Thursday, August 22, 2013 - 12:33 pm:

Hopefully someone will give the right answer, but there's a thinner nut used elsewhere on the T that is supposed to work good for this.... I'm just not sure what nut it is.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Val Soupios on Thursday, August 22, 2013 - 12:50 pm:

The nut that hold the pinion to the drive shaft is just right!


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce in Dallas TX on Thursday, August 22, 2013 - 08:28 pm:

If you have really early spring perches - say 1915 or earlier - you have thread engagement of about 5 threads without the accessory wishbone. Grinding down the nut to install a cotter key after installing the lower wishbone brace you end up with maybe two threads of engagement.

It's better to change out to 1917 or later perches if you want to use upper and lower wishbones. They have much longer threaded area, apparently in anticipation of coming changes.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Nik Martin on Friday, August 23, 2013 - 01:50 am:

Thanks to all. I'll check it out and get 'er fixed up.


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