 Improved shifting for side shifters, bolt on? Maybe., Experimenting tonight. |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| Dr Evil |
 Apr 14 2014, 10:14 PM
Post
#1
|
|
Send me your transmission!  Group: Members Posts: 23,034 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region 
 |
I have had this though for a long time to try and remove as much slop as I can in the shifting system. The tail shifter is a bit trickier, but not impossible. I have a side shifter in my new 914 and so, while I build up a transmission for it to drive to Hershey this weekend (this will be the raffle transmission, BTW. Trial by fire!), I decided to see how simple it would be to remove some of the slop.
First, see how much of a gap there is between the shift selector comb and the rod.  This is a huge amount so any bit that can be removed should be an improvement. Step one was to add material to the sides of the comb faces (Yes, Scotty, I welded). Then, I hand filed the faces and re-formed them to a specific profile. The metal that was added was hardened and a real bitch to file. I figured it was worth it. The end result was a much tighter fit.  There are a few parameters that I will not go into that need to be respected to get this to work, but the preliminary results were nice on the bench. With the material added and profiled on the faces, the stick throw fore and aft to select gears decreases significantly. There is still refinement that needs to be done on the profile, but so far the preliminary results are encouraging. Next, I will build a jig so I can directly observe and adjust my profile. And I will also be able to see where I can add material to take up the slack that one feels when they are in gear and can wiggle the stick back and forth. Once I get this prototype done and tested, I can do this treatment to any side shift console on an exchange basis and it will be a quick bolt on improvement (I hope). (IMG:style_emoticons/default/happy11.gif) |
   |
 
|
  |
Replies
| Dr Evil |
Sep 6 2014, 08:48 PM
Post
#2
|
|
Send me your transmission! Group: Members Posts: 23,034 Joined: 21-November 03 From: Loveland, OH 45140 Member No.: 1,372 Region Association: MidAtlantic Region
|
Sure, as soon as you buy one for me (IMG:style_emoticons/default/jerkit.gif)
|
|
|
|
| gereed75 |
Sep 6 2014, 09:43 PM
Post
#3
|
|
Senior Member Group: Members Posts: 1,315 Joined: 19-March 13 From: Pittsburgh PA Member No.: 15,674 Region Association: North East States
|
QUOTE(Dr Evil @ Sep 6 2014, 10:48 PM)  Doc, You still in Cannonsburg?? I just got the six on the road and I can bring it by for a shift comparo. Has a side shift with Tangerine tunnel bushing. |
|
|
|
Posts in this topic
Dr Evil Improved shifting for side shifters, bolt on? Maybe. Apr 14 2014, 10:14 PM
boxsterfan :popcorn: Apr 14 2014, 10:23 PM '73-914kid What kind of clearance are you aiming for between ... Apr 15 2014, 12:05 AM
Dr Evil
What kind of clearance are you aiming for between... Apr 15 2014, 07:16 AM HalfMoon :popcorn: Apr 15 2014, 01:18 AM bulitt Seems the play may be "designed in" to c... Apr 15 2014, 04:37 AM IanS So you say this can be similarly engineered for ta... Apr 15 2014, 09:34 AM CptTripps
So you say this can be similarly engineered for t... Apr 15 2014, 09:54 AM mskala
So you say this can be similarly engineered for t... Apr 15 2014, 10:43 AM Dr Evil
So you say this can be similarly engineered for ... Apr 15 2014, 10:59 AM Dr Evil For a tail shifter you would need the external shi... Apr 15 2014, 10:53 AM GeorgeRud I always looked at that coupling and figured there... Apr 15 2014, 11:36 AM Dr Evil My side shift kit would just be the shifter comb. ... Apr 15 2014, 12:05 PM Harpo Looks good Doc :popcorn:
David Apr 15 2014, 03:16 PM Dr Evil Thanks man :) Apr 15 2014, 03:23 PM veekry9 Dr Evil:
Delicate work,reducing the tolerance and ... Apr 15 2014, 03:39 PM Krieger Cool! Apr 15 2014, 03:51 PM '73-914kid Keep on pushing through with this Mike. BTW, if yo... Apr 15 2014, 03:52 PM Woody :popcorn: Apr 15 2014, 03:53 PM 914_teener Doc.
My box will be in transit in a week. I am ... Apr 15 2014, 04:06 PM Dr Evil I'll at least be testing the one iteration of ... Apr 15 2014, 05:39 PM stugray I have a tail shift laying in pieces from my last ... Apr 15 2014, 05:50 PM Dr Evil
I have a tail shift laying in pieces from my last... Apr 15 2014, 06:09 PM mepstein
I have a tail shift laying in pieces from my las... Apr 15 2014, 06:48 PM Dr Evil Ok, recruited a neighbors early 912 box that I jus... Apr 15 2014, 06:08 PM Dr Evil Excellent :evilgrin: Apr 15 2014, 06:51 PM yeahmag Killer! Apr 15 2014, 07:00 PM Dr Evil Success!
Tonight was very good. I made a jig... Apr 15 2014, 11:57 PM Krieger Id like to see one track tested this summer and he... Apr 16 2014, 08:24 AM Dr Evil You and me both :) I will make a few to send to pe... Apr 16 2014, 08:28 AM CptTripps Can't wait to see it this weekend!
I MAY ... Apr 16 2014, 09:46 AM boxsterfan Awesome thread!! Would love to reduce the... Apr 16 2014, 09:48 AM Dr Evil Stock shift console with stock play:
vb2lBHNAVk0
... Apr 16 2014, 09:52 AM Dr Evil Technical difficulties with imbedding....wait one.... Apr 16 2014, 09:53 AM '73-914kid Yepp, I'm sold. Love the lack of slop. Sign me... Apr 16 2014, 09:59 AM CptTripps That's bad-ass dude. Going to be a HUGE hit. Apr 16 2014, 10:01 AM Black22 Looks good!! :beer2: :cheer: :headbanger... Apr 16 2014, 10:04 AM Dr Evil Do or do not..... :evilgrin:
I am feeling pretty ... Apr 16 2014, 10:06 AM Mblizzard I am in for this! Apr 16 2014, 10:18 AM Dr Evil Where as a Rennshifter addresses the problem at th... Apr 16 2014, 10:24 AM bulitt Remind me how difficult it is to pull this rod out... Apr 16 2014, 11:05 AM rdauenhauer
Where as a Rennshifter addresses the problem at t... Apr 16 2014, 11:06 AM bulitt
Where as a Rennshifter addresses the problem at ... Apr 16 2014, 11:34 AM JWest The RennShift addresses the large amount of fricti... Apr 16 2014, 11:44 AM ablesnead
Where as a Rennshifter addresses the problem at ... Apr 16 2014, 05:47 PM JWest OK, unclenching performed - do I need to send a co... Apr 16 2014, 07:40 PM Dr Evil
I don't see a slam on your product at all...... Apr 16 2014, 07:46 PM Dr Evil
Where as a Rennshifter addresses the problem at ... Apr 16 2014, 07:34 PM Dr Evil Drama off:
So, to change this unit you would need... Apr 16 2014, 07:42 PM timothy_nd28 Homeostasis has been achieved once again :) Apr 16 2014, 08:10 PM sixnotfour do the math , large angles versus small angles....... Apr 16 2014, 08:24 PM HarveyH My take on this:
I'm visualizing the stock sh... Apr 16 2014, 09:33 PM euro911 My only question is, why you didn't get a pers... Apr 16 2014, 10:31 PM r_towle What is the mod? Apr 16 2014, 10:40 PM rick 918-S Careful welding on that internal shift part. If im... Apr 16 2014, 11:23 PM Dr Evil :yap: Ya ya. I already posted about this. Way to s... Apr 16 2014, 11:52 PM Dr Evil Alright, got the trans in last night/this morning.... Apr 17 2014, 10:26 PM HalfMoon
Alright, got the trans in last night/this morning... Apr 17 2014, 11:10 PM scotty b
Alright, got the trans in last night/this morning... Apr 18 2014, 05:47 AM boxsterfan
Alright, got the trans in last night/this morning... Apr 18 2014, 09:41 AM Harpo Don't fret Doc, We have faith. The right guy i... Apr 18 2014, 03:50 AM Dr Evil About 1000mi tested. Adjustment was not spot on, b... Apr 20 2014, 10:41 PM HalfMoon Hey Dr!
Did you make anymore progress with thi... May 29 2014, 10:57 PM Dr Evil Sorry, Dave. I have been super busy. I did figure ... May 30 2014, 09:23 AM HalfMoon
Sorry, Dave. I have been super busy. I did figure... May 30 2014, 11:06 PM Dr Evil OK, I have some great news! Unfortunately my 2... Sep 6 2014, 05:22 PM HalfMoon
OK, I have some great news! Unfortunately my ... Sep 6 2014, 07:46 PM r_towle Mount a camera......mounting the phone sounds like... Sep 6 2014, 07:53 PM colingreene Doc Send me a PM about your mini, I can probably h... Sep 6 2014, 10:14 PM stugray Too bad you dont have a rennshifter to try it with... Sep 7 2014, 10:37 AM Dr Evil gereed75, hell yes!
Collin, I will PM you sho... Sep 7 2014, 11:16 AM Eric_Shea My teener shifts notchy like a Ferrari. Biggest a... Sep 7 2014, 11:56 AM Dr Evil Interesting. I wonder if that set up would benefit... Sep 7 2014, 12:20 PM gereed75 Doc, I have another method in mind that would achi... Sep 7 2014, 08:38 PM RobW I had the full Renn to Renn set up on my old race ... Sep 7 2014, 09:26 PM Dr Evil Indeed, Rob, if I can not beat the performance and... Sep 7 2014, 09:28 PM gereed75
Indeed, Rob, if I can not beat the performance an... Sep 7 2014, 10:03 PM maf914 At the base of the gear shift lever in the cockpit... Sep 8 2014, 07:06 AM Racer Chris That bushing is brass.
It doesn't wear much s... Sep 8 2014, 07:24 AM maf914 Chris, Thanks for the info. I have had the gear s... Sep 8 2014, 02:16 PM HalfMoon Hey! Do those shifting fingers get bunged up o... Sep 9 2014, 08:11 PM Dr Evil They can, but yours look fine....in a blurry pic k... Sep 9 2014, 08:47 PM HalfMoon
They can, but yours look fine....in a blurry pic ... Sep 9 2014, 08:56 PM Dr Evil I finally got some impartial feed back a few night... Sep 19 2014, 07:42 AM Kansas 914
I finally got some impartial feed back a few nigh... Sep 19 2014, 08:13 AM Spoke Thanks for letting me drive your car. That was a b... Sep 19 2014, 12:09 PM Joe Ricard I messed with this about 5 years ago on my own. I... Sep 19 2014, 02:09 PM |
25 User(s) are reading this topic (25 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 28th December 2024 - 01:35 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.