Suicide shift adjustment

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cant-drive-55
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Suicide shift adjustment

#1

Post by cant-drive-55 » Sun Sep 08, 2019 11:59 pm

Put a suicide shift on my '76 several years ago. Can never get it adjusted correctly. Clutch engagement is at the last 1/2 inch. I have to be careful not to stall from a stop. Hot start is another issue.

Any tricks or technique to adjusting it for more travel?



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Re: Suicide shift adjustment

#2

Post by RUBONE » Mon Sep 09, 2019 12:04 am

What part of suicide do you not understand?? :mrgreen:

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Re: Suicide shift adjustment

#3

Post by kitabel » Mon Sep 09, 2019 12:37 am

Absent geometry changes, the balance of leverage (mechanical advantage, effort to release the clutch) vs. disc separation travel (complete disengage through full engage) is simply the ratio of cable travel versus pushrod travel.
What clutch release arm are you using? The easiest change is probably locate the clutch cable hole position in the arm closer to the pivot.

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Re: Suicide shift adjustment

#4

Post by cant-drive-55 » Mon Sep 09, 2019 1:04 am

It's an aftermarket foot clutch with an actuator arm and pedal on the common shaft. Maybe I can machine a hole on the actuator arm, closer to the shaft. That may give me more pedal travel for the same clutch rod travel.

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Re: Suicide shift adjustment

#5

Post by RooDog » Mon Sep 09, 2019 2:07 pm

How about posting a picture of your setup so that we all know what you're dealing with?

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Re: Suicide shift adjustment

#6

Post by RUBONE » Mon Sep 09, 2019 4:35 pm

Suicide shift is a made up term that refers to nothing. A commonly called suicide CLUTCH is a simple pedal that returns to engaged when released unlike a factory pedal which is designed to hold in the disengaged position if set up correctly. A hand shift lever is merely that and there is no "suicide" involved no matter where the location of the shifter is.

If a factory type pedal is used with aluminum primaries it requires the correct '65 up pedal with the arm on the backside as well as the correct clutch release arm on the transmission for correct throw. If it is a simple in/out pedal it still benefits from the correct clutch arm.

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Re: Suicide shift adjustment

#7

Post by Andygears » Mon Sep 09, 2019 9:41 pm

RooDog wrote:
Mon Sep 09, 2019 2:07 pm
How about posting a picture of your setup so that we all know what you're dealing with?
And look at the knowledge base, adjusting a clutch, starting wth springs, pushrod etc. If all that is correct, then the pedal can be set.

Andygears

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Re: Suicide shift adjustment

#8

Post by cant-drive-55 » Tue Sep 10, 2019 12:26 am

I updated the clutch including springs. I may try moving the rod attachment point lower on actuator. I think 2 inches will allow more pedal rotation while clutch is engaging.

Thanks for the help with this.

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Re: Suicide shift adjustment

#9

Post by talldrifter » Tue Sep 17, 2019 9:02 am

I don't know if this will help, but this is how I've been running my "Pan" since 1998. It is in pieces now but should be back together in two weeks or less, if I can spare time to finish it. It has always shifted fine, no problems.
You do not have the required permissions to view the files attached to this post.

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Re: Suicide shift adjustment

#10

Post by RooDog » Tue Sep 17, 2019 12:25 pm

That's all well and good, TallDrifter, but your pics may or may not be what " cant-drive-55" has. I really do not think any of us are mind readers and without his own pics we can only guess as to what kind of set up he has.

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Re: Suicide shift adjustment

#11

Post by cant-drive-55 » Fri Sep 20, 2019 3:08 pm

It's similar in function, but not as nice. I did drill another mounting hole 2 iin toward pivot. Made noticable difference. Have a little more control with the clutch engagement.

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Re: Suicide shift adjustment

#12

Post by thebeast » Sat Sep 21, 2019 6:42 pm

You could add more threads to the clutch rod to get more adjustment. I had to do this with an aftermarket rod before.

Good luck, James

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