Belleville washer thickness?

[FF6602]

The Belleville spring washers (.50 OD / .255 ID) that go on the upper steering shaft are missing from the pieces I got with my unfinished kit. I found them on the McMaster-Carr website (thanks to edwardb for sending me there) but there are four thicknesses listed. The choices are:

0.018
0.022
0.025
0.038

Because this is a "spring washer", I assume the thickness (height) makes a difference. What's the correct thickness to use?

[rich grsc]

Call Factory Five, they will mail you the correct ones.

[Scott Zackowski]

The Belleville spring washers (.50 OD / .255 ID) that go on the upper steering shaft are missing from the pieces I got with my unfinished kit. I found them on the McMaster-Carr website (thanks to edwardb for sending me there) but there are four thicknesses listed. The choices are:

0.018
0.022
0.025


0.038

Because this is a "spring washer", I assume the thickness (height) makes a difference. What's the correct thickness to use?


Edward will hopefully chime in.

If I recall his discussion on this in the past, you can adjust the thickness to help take up slack/play in the column/shaft.

But I am not sure of the FFR original part thickness.

[Jeff Kleiner]

Base to crown measures .034.

Jeff

[edwardb]

Based on my research and measuring a couple builds ago, FFR supplied Belleville spring washers are equivalent to McMaster #9712K62. https://www.mcmaster.com/9712k62. I used the next higher size #9712K63 (.038 vs .036 total thickness) and improved the fit of the collapsing column on that build. The most recent build (Gen 3 Coupe #59) use the provided washers from FFR and they worked perfectly.

[BEAR-AvHistory]

+1 on the McMaster thicker washers.

[MVRight]

PM me with your address and I'll send some to you. Got a bunch from McMaster.