My latest product idea, for Shift Linkage adjustment |
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My latest product idea, for Shift Linkage adjustment |
ChrisFoley |
Oct 1 2014, 10:03 AM
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#1
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I am Tangerine Racing Group: Members Posts: 7,928 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
With all the enhancements available for our shift linkage, there's still one thing no one has ever addressed.
Adjusting the rotation so all three shift planes are where they belong relative to the lever assembly has always been a PITA, and is even more difficult with a Rennshift due to the small opening to access the pinch bolt. In addition, installing a more precise shift linkage assembly, like we all crave, makes precise adjustment even more critical. There should be a way to maintain alignment of the tunnel rod with the fork under the shift lever, and make precisely controlled rotation adjustments in a minute or less. An idea I've had on the back burner for a long time has finally reached the prototyping stage. (IMG:style_emoticons/default/idea.gif) I'm going to test a replacement Fork piece (914 424 171 01) machined from billet that incorporates a worm type adjuster against the splines of the tunnel rod. If it works it I believe it will be a game changer. (IMG:style_emoticons/default/smilie_pokal.gif) (IMG:style_emoticons/default/smoke.gif) |
ChrisFoley |
Oct 31 2014, 12:06 PM
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#2
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I am Tangerine Racing Group: Members Posts: 7,928 Joined: 29-January 03 From: Bolton, CT Member No.: 209 Region Association: None |
I redesigned the worm support block after the testing the first prototype.
The first unit had a support pin in the center of the worm but it was only held from the bottom, which created too much backlash. Now it rides in a 3/8" dia. pocket just large enough for the worm to turn without noticeable free play. Here's a pic of the second prototype installed under a Rennshift. Installation only takes a few minutes but does require the shifter to be removed from the tunnel. Adjustment was very easy even though the Rennshift adjuster opening is rather small. After getting the lever fore-aft position set by sliding the gear on the shaft, I put it into 3rd gear and pulled it back out partway (onto the synchro) so I had good access to both the clamping bolt and the adjuster. Then I loosened the clamping bolt and rotated the gear until the lever was exactly midway in the center plane, and re-tightened the bolt. All 6 gears go in smoothly with equal spacing between the three planes. I'll drive it to check the alignment in operation, and if a slight re-adjustment is needed it'll take about one minute. (IMG:style_emoticons/default/smile.gif) |
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