throttle return springs for IDF's, what works? |
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throttle return springs for IDF's, what works? |
machina |
Sep 15 2004, 03:22 PM
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#1
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Advanced Member Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848 |
I tried this dual coaxial compression spring setup but it feels like crap and is really hard to push. The carroll smith books like a compression spring because if it breaks, you still have some spring action.
How do you guys rig your throttle return springs on IDF's? Also, does it help to lube the inside jacket of the throttle cable? thanks, dr Attached image(s) |
Aaron Cox |
Sep 15 2004, 03:24 PM
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#2
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
neat trick i saw at dunkels was as follows:
loop one end of a 'pull' type spring to the side of the aircleaner base, and the otherside to the extra hole on the arm on the weber throttle shaft (IMG:style_emoticons/default/wacko.gif) |
lapuwali |
Sep 15 2004, 04:04 PM
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#3
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Not another one! Group: Benefactors Posts: 4,526 Joined: 1-March 04 From: San Mateo, CA Member No.: 1,743 |
Aircooled.net sells little springs that go on the carbs themselves right at the throttle arms, and are good backup if your main tension spring breaks. I used those, and a simple tension spring between the arm and one of the trunk springs. Not too heavy, and three springs have to break for me to have stuck open throttles.
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SLITS |
Sep 15 2004, 05:06 PM
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#4
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"This Utah shit is HARSH!" Group: Benefactors Posts: 13,602 Joined: 22-February 04 From: SoCal Mountains ... Member No.: 1,696 Region Association: None |
QUOTE(synthesisdv @ Sep 15 2004, 02:22 PM) I tried this dual coaxial compression spring setup but it feels like crap and is really hard to push. The carroll smith books like a compression spring because if it breaks, you still have some spring action. How do you guys rig your throttle return springs on IDF's? Also, does it help to lube the inside jacket of the throttle cable? thanks, dr That "coaxial" spring is useless if your actuator arm breaks or falls off the carb. The return spring should be mounted on the carb shaft linkage - use two if you are uncomfortable. |
Aaron Cox |
Sep 15 2004, 05:19 PM
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#5
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
take a side view pic of your carb attached to the linkage (middle of engine bay - looking at a carb) and ill show you the easiest solution.
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machina |
Sep 15 2004, 07:11 PM
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#6
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Advanced Member Group: Benefactors Posts: 2,030 Joined: 21-June 03 From: Miami Beach, FL Member No.: 848 |
QUOTE(acox914 @ Sep 15 2004, 07:19 PM) take a side view pic of your carb attached to the linkage (middle of engine bay - looking at a carb) and ill show you the easiest solution. OK, thanks aaron, I looked at them and couldn't figure out what you were talking about.... dr Attached image(s) |
Aaron Cox |
Sep 15 2004, 07:20 PM
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#7
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
DONE: your welcome
loop end of spring on the air cleaner base, put other end of spring in the hole on the arm ... SIMPLE and EFFECTIVE! Attached image(s) |
ChrisFoley |
Sep 15 2004, 08:36 PM
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#8
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I am Tangerine Racing Group: Members Posts: 7,934 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
I like to have the coil springs on the IDF throttle shafts, and a long, small wire gauge, pull spring attached to the same arm the cable is on.
It may take a few tries to get the correct tension so the pressure at your foot is reasonable. I don't like the springs that attach to the filter plates, btdt. I don't think the compression spring will work out; it will cause too much slack on the cable. |
Joseph Mills |
Sep 15 2004, 08:48 PM
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#9
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on a Sonoma diet now... Group: Members Posts: 1,482 Joined: 29-December 02 From: Oklahoma City, OK Member No.: 39 |
QUOTE(synthesisdv @ Sep 15 2004, 03:22 PM) I tried this dual coaxial compression spring setup but it feels like crap and is really hard to push. How do you guys rig your throttle return springs on IDF's? dr My P-tech installed some small pull springs on the throttle shafts to the filter plate (already had coiled up springs on the carb shafts). I immediately removed them. WAY too much pedal effort. I like just one longish loose spring on the hex bar. Of course, when it comes to switchin'off the ignition, I'm pretty quick on the draw. (IMG:style_emoticons/default/biggrin.gif) Your engine bay is looking good. How about a few picks of all of it? |
crash914 |
Oct 28 2004, 05:46 AM
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#10
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its a mystery to me Group: Members Posts: 1,826 Joined: 17-March 03 From: Marriottsville, MD Member No.: 434 Region Association: MidAtlantic Region |
Just a quick question....When you run the throttle cross shaft in front, it looks like you need a longer throttle cable to run it in from the rear?
Where do you get such a cable? I also tried the small springs from the throttle shaft to the linkage....the springs were holding my throttle plates open (binding)... Thanks, herb |
Brett W |
Oct 28 2004, 05:53 AM
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#11
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Advanced Member Group: Members Posts: 2,856 Joined: 17-September 03 From: huntsville, al Member No.: 1,169 Region Association: None |
Do not put a spring on the opposite end of the throttle shaft from the linkage. It will induce a slight amount of twist in the throttle shafts causing a stumble upon throttle opening. I used to run a center pull linkage with a return spring mounted on each carb that pulled back to the chassis. Worked better than many other setups.
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