Gated shifer? |
|
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. |
|
Gated shifer? |
kyhunting |
Jul 20 2009, 11:03 AM
Post
#1
|
Newbie Group: Members Posts: 14 Joined: 8-October 07 From: KY Member No.: 8,199 |
Racing application. Who is using a gated shifter? Which one? Do you like it? Is it worth the expense? I've been fighting with shifting issues.. like finding 2nd when looking for 4th. Last episode ended with broken rocker arms. I've adjusted and replaced everything from the shifter to the solid trans mounts. It will do fine and then all of a sudden I've found second instead of 4th which results in a over rev. I have concentrated on my shifting and can't find a correlation to what causes this to happen. Any suggestions would be appriciated.
Thank you David |
HAM Inc |
Sep 9 2009, 11:26 AM
Post
#2
|
Senior Member Group: Members Posts: 846 Joined: 24-July 06 From: Watkinsville,GA Member No.: 6,499 Region Association: None |
QUOTE No doubt you shift a bunch at the track, but as with all things it's a matter of degree when you compare an autox run to a track session or race. By degree I mean missed one shift at an autox and your finished. On the track this can also be the case, but typically it isn't. Yeah that makes sence. I imagine that in a short solo run (AX) you have to be flawless to get TTOD. I got lucky when I flubbed my shift as I wasn't being pressured in the braking zone. If I had, I would have likely lost the position. Sometimes one mistake is all it takes in any form of motorsports. |
grantsfo |
Sep 9 2009, 06:10 PM
Post
#3
|
Arrrrhhhh! Group: Members Posts: 4,327 Joined: 16-March 03 Member No.: 433 Region Association: None |
QUOTE No doubt you shift a bunch at the track, but as with all things it's a matter of degree when you compare an autox run to a track session or race. By degree I mean missed one shift at an autox and your finished. On the track this can also be the case, but typically it isn't. Yeah that makes sence. I imagine that in a short solo run (AX) you have to be flawless to get TTOD. I got lucky when I flubbed my shift as I wasn't being pressured in the braking zone. If I had, I would have likely lost the position. Sometimes one mistake is all it takes in any form of motorsports. Ahh Yeah that shift off the line from 1st to 2nd is tough. A good AX car doesnt get shifted out of 2nd at all in 95% of events. JP's car "shifting" at an AX. (IMG:style_emoticons/default/yellowsleep[1].gif) http://www.youtube.com/watch?v=7_nANXY8KBs...rofilepage#t=45 I can just say JWest linkage did wonders for my car and the stock kinkage that I replaced was relatively new. Brad and I installed it in about an hour. It helps to have two people for linkage install. Its not gated but shifts are much more positive. And I did hundreds of shifts flawlessly each weekend I went to the track with the JWest setup. Honestly shifting 901 with Jwest was nicer than my cable shifted Boxster. This post has been edited by grantsfo: Sep 9 2009, 06:18 PM |
Randal |
Sep 9 2009, 07:15 PM
Post
#4
|
Advanced Member Group: Members Posts: 4,446 Joined: 29-May 03 From: Los Altos, CA Member No.: 750 |
QUOTE No doubt you shift a bunch at the track, but as with all things it's a matter of degree when you compare an autox run to a track session or race. By degree I mean missed one shift at an autox and your finished. On the track this can also be the case, but typically it isn't. Yeah that makes sence. I imagine that in a short solo run (AX) you have to be flawless to get TTOD. I got lucky when I flubbed my shift as I wasn't being pressured in the braking zone. If I had, I would have likely lost the position. Sometimes one mistake is all it takes in any form of motorsports. Ahh Yeah that shift off the line from 1st to 2nd is tough. A good AX car doesnt get shifted out of 2nd at all in 95% of events. JP's car "shifting" at an AX. (IMG:style_emoticons/default/yellowsleep[1].gif) http://www.youtube.com/watch?v=7_nANXY8KBs...rofilepage#t=45 I can just say JWest linkage did wonders for my car and the stock kinkage that I replaced was relatively new. Brad and I installed it in about an hour. It helps to have two people for linkage install. Its not gated but shifts are much more positive. And I did hundreds of shifts flawlessly each weekend I went to the track with the JWest setup. Honestly shifting 901 with Jwest was nicer than my cable shifted Boxster. I think you are totally missing the point Grant. I wasn't talking about a 6 cylinder, where you rarely see 3rd, I was talking about my 4 cylinder where 3rd is used frequently. If you miss the 2nd to 3rd shift, because your right in the middle of a corner and on the rev limiter and have to shift, your done for that run. The point being that the RennShifter, at least the generation I have, doesn't correct this issue. Maybe with the "new" back end stuff it would. |
grantsfo |
Sep 17 2009, 10:24 AM
Post
#5
|
Arrrrhhhh! Group: Members Posts: 4,327 Joined: 16-March 03 Member No.: 433 Region Association: None |
I think you are totally missing the point Grant. I wasn't talking about a 6 cylinder, where you rarely see 3rd, I was talking about my 4 cylinder where 3rd is used frequently. If you miss the 2nd to 3rd shift, because your right in the middle of a corner and on the rev limiter and have to shift, your done for that run. The point being that the RennShifter, at least the generation I have, doesn't correct this issue. Maybe with the "new" back end stuff it would. ...Guess you didnt get the "subtle" hint about properly setup AX car not using 3rd. (IMG:style_emoticons/default/shades.gif) Gated shifter isnt going to solve key issue in my "uneducated" opinion. Properly setup 4 cylinder with 7500 RPM redline should be able to be geared not to use 3rd in over 90% of aX in our area. Dedicated AX car should be setup this way. My six was dual use and I still had decent AX gearing with 7200 RPM redline. I just had a huge torque hole below 4000 RPM that you wont have with a T4. What slowed you down in AX events was not mishifts as much as the act of shifting so much. When you shift you are coasting and you have added distraction of hand being off the wheel at times when all concentration should be on entry or exit of a corner. JP got it right with his car. Nice broad torque band, decent redline and gearing that allowed high 65 MPH plus passes. We were all signficantly outclassed by his car at 2008 Shootout. Your car truly has potential to be a great AX car if you can get topend issues worked out with motor and get better 2nd gear in that thing. My Boxster is geared just like a 914-4 with its short tires and limited redline so now I'm a shifting fool. I'm not looking for gated shifter I'm now looking for ECU that will lift my redline to 7500 RPM. I'm losing tons of time due to shifts compared to my old 914-6. Larry S was lauging watching my car at Alameda and said I was shifting more than a 914. LOL! While all that shifting feels cool it is slower. Gated shifter is still cool idea but given defined purpose of your car would hate to see it continue to be hampered by too short 2nd and not high enough redline. ...and you will want the backend linkage stuff for Hoopa. Corner loads on those 10% grade uphill turns do strange stuff to stock linkage. This post has been edited by grantsfo: Sep 17 2009, 10:33 AM |
Lo-Fi Version | Time is now: 8th June 2024 - 06:05 AM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |