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Join Date: Jan 2003
Location: Langley,B.C.
Posts: 12,009
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Jenvey Linkage Solution...
Okay, for those of you that have Jenvey ITB's you know that the kit comes set up to use a cable. So, some where along the line you need to adapt the cable to the rod linkage in the chassis. Or..... here is my solution. NO cable. What I did was adapt the linkage to use rod ends and ball/socket connections which I will continue right down to the bell crank on the tranny. I lengthened the arm that pulls throttle slightly to equal the throttle pedal travel and made up a rod linkage. I am also going to replace the "wire" linkage from the motor to the trrans with a rod with rod ends on each end. This is what it look like to date.......
Here is what Jenvey wants you to hook a cable to, not thanks....   So here is what I did instead....    Comments? Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-05-2007, 10:09 PM
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What's wrong with the cable? 99% of cars have cable throttle linkages, is there some issue with binding or lack of travel on our engines? Just curious as I will need to fab something for my install, and a cable is a lot easier than solid linkages.
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Robert Currently Porsche less (but the wife has 2) |
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02-06-2007, 05:17 AM
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Location: Langley,B.C.
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Nothing is wrong with the cable, but at some point you need to adapt it to rods that the car came with. This is just another solution.
Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-06-2007, 06:07 AM
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Join Date: Feb 2004
Location: Geneva, IL
Posts: 666
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Jeff, if you need pull cables with a ball socket end, just let me know.
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1971 Targa RS - Sold 1964 BMW 1800Ti 1969 BMW 2002 |
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02-06-2007, 06:08 AM
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My throttles came with the cable. And sorcing other ones is not a problem, I just wanted to do something a little different!
Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-06-2007, 08:00 AM
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Join Date: May 2004
Location: Boulder, Colorado
Posts: 7,275
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Does the "stock" cable mount use that quadrant-like thing in your first picture?
Reminds me of sailboat wheel steering to rudder stuff. I think a cable quadrant produces a constant number of degrees of rotation for a given cable travel. A lever doesn't quite do that, right? Howver, since this apparatus is full of levers, maybe that doesn't matter at all, even in this clever system. It is not a problem with other lever based gas pedal linkages. A new use for all those bell crank plates we took off our cars when we went to carbs or more. Walt |
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02-06-2007, 10:54 AM
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Join Date: Jan 2003
Location: Langley,B.C.
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Yes, the throttles are suppossed to use the qandrant like thing. I measured the pedal travel and adjusted the mounting points to provide the right movement. Each bank of throttles moves on the pivot arm that I mounted my rod end to. I just bypassed the cable quadrant. I am now using the cross bar only to link the two sets of throttles.
I just did this instead of fabbing a mount for the cable down on the transmission bell crank. Either way required some fabrication.... Cheers
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Turn3 Autosport- Full Service and Race Prep www.turn3autosport.com 997 S 4.0, Cayman S 3.8, Cayenne Turbo, Macan Turbo, 69 911, Mini R53 JCW , RADICAL SR3 |
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02-06-2007, 01:48 PM
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1968 Porsche 911T
1986 Porsche Carrera
