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> Cableshifter for the 915 ..., anyone got a working setup?
SirAndy
post Jun 27 2006, 05:35 PM
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QUOTE(Andyrew @ Jun 27 2006, 04:05 PM) *

915 cable shift wanabee's club!!!!

(IMG:style_emoticons/default/w00t.gif)

i still have to pick up the 915 from bill, so right now i'm probably not much help until i actually get my hands on that puppy ...
(IMG:style_emoticons/default/smash.gif) Andy
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nocones
post Jun 27 2006, 05:44 PM
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Just found what I was looking for...
Here is the photo Scott sent me of his Renegades cable-shift kit.


And thanks Andyrew, us cable-shift wanna-bes gotsta stick together. (IMG:style_emoticons/default/biggrin.gif)


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East coaster
post Jun 27 2006, 05:53 PM
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One of the slickest I've seen recently was from "wbergtho", but I'll be damned if I can find his thread/pics for you. I know they were posted at one time.
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Brad Roberts
post Jun 27 2006, 06:12 PM
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Interesting. They are changing the direction of the "front 2 back" cable.

I think we talked about the Boxster/996 shifter already having the correct "direction".


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wbergtho
post Jun 27 2006, 06:30 PM
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I built my own cable shift version to shift my 930. A 915 shifts about the same as a 930 (similar design). I am absolutely sure if I went back to a 915, my system would work as well as it currently does. Here are a few pics I took before I prettied evrything up and had it all powder coated.

*McMaster-Carr 5/16" cables (84" & 96")
* Mitzubishi 3000 GT shifter (modified to place the fore/aft rod end attachment point above the pivot point of the shifter...to eliminate the need for more "monkey motion" levers, etc.)
* Custom made trans mount
* Splined drive shaft from a Geo Tracker & splined hub
* A cage bracket to limit the side to side hub/lever
* Time & patience


Regards, (IMG:style_emoticons/default/beerchug.gif)

Bill


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Andyrew
post Jun 27 2006, 06:35 PM
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Nice design! Works for me!!
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jim912928
post Jun 27 2006, 06:49 PM
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I'd be in for a kit...i've got my 915 sitting on the side...currently debating what to do!
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Brad Roberts
post Jun 27 2006, 06:52 PM
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Bill,

did you drill/tap the shift selector sleave for a cone screw? so it would enter the recess in the stock shift selector rod?

Or did you cut it off and just use a "jam" screw?

I see you played aorund with the amount of movement needed for the "side to side" motion.

Combine this and the WEVO gateshift and I bet it would be pretty solid.

Did you take a look at how the Boxsters do it? They have counterweights on the linkage to make it "feel" correct and to assist with the gear change.

Pretty slick (IMG:style_emoticons/default/clap56.gif)


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wbergtho
post Jun 27 2006, 09:12 PM
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Hi Brad,

I took a stock cone screw and tapered the "cone" section more so it would bury itself low enough to keep from binding. I have not looked at a Boxster shifter in the flesh but have seen a few pics on this site. The counter balance design sounds interesting. I just may do further investigating on the Boxster shifter as an upgrade to what I have. My shifter is decent...but could be upgraded to one that is of higher quality (less slop...better feel). Most anyone could jump right in my car and never miss a shift or have any difficulties finding all gears...but it can always get better. I just wish the 915 & 930 gearboxes shifted better & faster. I guess we're stuck with 70's technology here.

Bill
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kdfoust
post Jun 27 2006, 10:17 PM
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I'm plowing the same field Andy. I found this over at Patrick Motorsports. Looks like some kind of a cable shift. I can't find any pictures of what PMS is doing at the tranny end.
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It looks like this race car for sale is using the PMS cable shift. There's a tranny pic here but the linkage doesn't make any sense to me sense to me. I'm not familar with the 915 setup yet.


Regards,
Kevin
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Andyrew
post Jun 27 2006, 10:28 PM
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The rod sticking out the end of the trani goes in and out. and twists as well. which selects the gears.

There are two cables on that trani, One pushes and pulls on the rod for in and out.
One comes from under and twists the lever left to right.

(IMG:http://race-cars.com/carsold/porsche/1137455863/1137455863pg.jpg)

Andrew
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McMark
post Jun 27 2006, 11:12 PM
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Hmmmm..... with a shifter mounted on top of the center tunnel, you could probably run the oil lines inside the tunnel. (IMG:style_emoticons/default/idea.gif)

The 996/986 shifter looks really nice. I think we could cobble something together. (IMG:style_emoticons/default/biggrin.gif) Then the issue is mounting the tranny in the car. The WEVO gives you stock ears to mount it, which is really clean. The whole cradle mount doesn't taste very good to me.
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yeti
post Jun 28 2006, 10:22 AM
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Hello.
Well I just saw the thread (IMG:style_emoticons/default/smile.gif) . Well I might be the one guy in Germany who run a 915 Gearbox with the cable shift system. I have the gearbox done by powerhouse and they also recommend the cable shift system. It is the same than from Patrick I gues. It should shift better and faster and it is still the cheaper version. I had (that is a long story - asked if you are interested) and have (still) some problems with the whole modification. I.e. how to fix the mechanical speedo cable to the gearbox. I posted this here - thanks, I might have even a simpler solution for this problem.
The gearbox is longer than the 901 and space for a "TÜV" exhaust system is pretty rare. Well I have no idea what you guys in USA are doing with the exhaust system with the 915 gearbox (IMG:style_emoticons/default/biggrin.gif) .
I made something that might work for the first but I will get a stainless version and heat exchangers in the winter time. The car still does not run - hope I will fix it this week. I got the wrong permatune (IMG:style_emoticons/default/mad.gif) . So there was plenty of changes on the car, but it looks pretty original and that was my goal. Since the car still does not run, I just want to use it now and fine tune it in the winter time.
The cable shift system looked pretty ugly if naked. I had no idea - when ordereing. I used a silver aluminium block to adjust it to the correct height and then fabricated a custon console to hide all the cables. I will add a few pics so that you have a look at it.

Yeti


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yeti
post Jun 28 2006, 10:34 AM
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yeti
post Jun 28 2006, 10:35 AM
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yeti
post Jun 28 2006, 10:37 AM
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yeti
post Jun 28 2006, 10:38 AM
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yeti
post Jun 28 2006, 10:47 AM
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And the last one with the final console. Look at my gauges. Man I will be very happy to look at them ( you do not see the 300km/h speedo). I will use a nice Momo Prototipo covered in suede and make a custon sport seats (out from the original one - but this is a project for next winter).

Well a lot of problems come with the 915 gearbox. If I could choose again I would kept the 901 with a nice 2.5 sport engine that runs up to 8k UPM. But it is a very strong gearbox that could handle a lot of torque and that is the reason why I've choosen that. I have shift the gearbox a little and it was a bit heavy but a nice feel. It should be much more easier since the engine run and the system is used a bit more. I let a hole in the middle of the shifter so you can see the nice mechanical stuff.

Yeti


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sharper
post Jun 28 2006, 11:56 AM
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Here is what mine looks like. It is from a Boxster.
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jim912928
post Jun 28 2006, 12:33 PM
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Sharper...can you detail out your work? Did you use the Boxster shifter in the passenger compartment? How much fab work? Can you post more pics of the inside and backside?
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