Turn signals cancels too early

[rpmerf]

70 C20. Non tilt, not telescoping column. The turn signals seem to be working as intended, but they cancel too early for my taste. I have a road near me, where the road turns left, and I need to make a right turn. With the right turn signal on, the wheel only needs to turn about 1/8 turn to the left to click off the turn signal. I have to manually hold it while it is constantly trying to click off. I would like it to click off at closer to 1/4 to 1/2 turn.

Has anyone tried a replacement cam, or modifying the existing cam? The cam in my truck has 4 nubs on it. Looking at it installed, they are at about 2:00, 4:00, 7:30, and 10:30. The one that is really bugging me, is the nub at 2:00. I've been poking around online and see a bunch of these cams only have nubs at like 8:00 and 10:00. I'd really rather not modify my current cam, and I know that if I get a replacement, it will need to fit into the bearing like the current one does.

Thank you

[Davidf]

If it only cancels prematurely in one direction then that would indicate your wheel is not centered. Center the wheel. Otherwise, you will need to find a different cam/horn ring or mod the one you have.

[rpmerf]

It does do it both ways. I spent a bit of time looking at how it all lines up and when what hits where. I just notice it more on the one side because of a road on the way home.

I saw LMC has the stock cam for like $12, so I bought one. When I get it, I'll try cutting off the nubs at 2:00 and 4:00 and see if that gets me the results I'm looking for.

[BigBird05]

Almost all of the cams from that vintage will fit your column. The biggest difference is the length of the horn projection. It is a different length for different steering wheels.

[rpmerf]

The main difference I saw was that the one I have is beveled at the edge. I believe it fits into the top bearing. Most of the ones I saw scrolling through Summit Racing have a flat bottom. These look like the one used on tilt columns with a spring.

I'll see how it goes modifying a stock cam first. If that isn't good enough, I'll look for another cam with a beveled edge.

[70STOVEBOLT]

Sub’d

[Warrens69GMC]

On my 1978, I pushed the pin for the cloverleaf, and rotated in the direction needed.

Worked like a charm.

[rpmerf]

I bought a replacement cam from LMC and cut the 2 back tabs off. It is a lot better now. I can turn on the right turn signal, and steer to the left without it cancelling. The 2 remaining cams do seem to be spaced a bit wide. It will cancel when I turn on the left turn signal, then get in a left turn lane. Other ones I saw online has those 2 cams close together. I'm wondering if I want to play with it a bit more. Cut off the 2 there and epoxy on a piece or 2 of rod.