Lotus Elan

Elan S4 throttle return spring

PostPost by: 106500 » Tue Nov 03, 2015 1:04 pm

I've just replaced the accelerator cable on my Stromberg S4 Elan. There is no throttle return spring fitted (other that those fitted on the carburetters). Consequently the accelerator seems rather 'weak'.

Would anyone know whether any throttle return springs were fitted (either on the pedal or the carb linkage)? I've looked at previous posts on this topic and there seems to be nothing definitive. Pictures would be particularly helpful! Thoughts appreciated.
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PostPost by: billwill » Tue Nov 03, 2015 1:56 pm

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PostPost by: RogerFrench » Tue Nov 03, 2015 5:41 pm

There should be a simple tension coil spring, from the inner cable connector to the air box. It's shown clearly in the workshop manual.
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PostPost by: 106500 » Tue Nov 03, 2015 9:56 pm

Thanks for your replies - very helpful. Does anyone have the arrangement as set out in the manual? There seems to be nothing to attach a spring to on the back of the airbox?
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PostPost by: collins_dan » Tue Nov 03, 2015 10:55 pm

Yes, there is a tiny whole at the bottom of the airbox between the two carbs.
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PostPost by: collins_dan » Tue Nov 03, 2015 10:55 pm

Yes, there is a tiny whole at the bottom of the airbox between the two carbs.
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PostPost by: 106500 » Wed Nov 04, 2015 8:37 pm

I'm afraid there's no hole in my airbox and I'm reluctant to drill it. An alternative is to run the spring from the carb balance pipe - anyone done this? Not sure what fitting I can use though. The linkage on my carbs has a lever on the top to which I can attach a spring.
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PostPost by: 661 » Wed Nov 04, 2015 9:58 pm

I must say, I don't have that spring and mine returns with plenty strength.
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