2.0L Performance Tech 260hp (235hp auto) Turbocharged SS tuner version. 260 lb-ft of torque

TWM Short Shifter

Old Jan 6, 2009 | 09:01 PM
  #41  
DrLoch's Avatar
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From: Mebane, NC
Originally Posted by c2vette
I believe from reading all the posts on shifters and engagement issues and my own experience with the (great!) TWM shifter and the stock shifter that this may be due to poorly adjusted shift cables in the HHR SS "as delivered" at the dealer. The Shop manual does not appear to even have a specifically defined method of adjustment. The "put it in 5th gear and adjust to to barely touching the right side stop" appears to be the best method stock or TWM.
Shop Manual....What shop manual? I've been on the Helms list to get one once they are avaliable. Where did you find one?

I believe I need to get one of these short shifters before the 15th...
Old Jan 6, 2009 | 09:07 PM
  #42  
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From: Austin, Texas
Originally Posted by DrLoch
Shop Manual....What shop manual? I've been on the Helms list to get one once they are avaliable. Where did you find one?

I believe I need to get one of these short shifters before the 15th...
Go to the third msg down from Jeff, looks like they are out of stock right now https://www.chevyhhr.net/forums/show...ht=shop+manual
Old Jan 6, 2009 | 09:27 PM
  #43  
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This side-to-side adjustment thing has me perplexed.

Since the geometry of the TWM shifter is different (pivot point location relative to the ends of the shifter arm), this allows for shorter throws in both the fore-aft AND side-to-side directions. With less shifter movement needed, obviously, the arm doesn't move as far in all directions as it used to.

So, given the way that the reverse lockout works, and the apparent need/helpfulness to have the right side of the shifter arm hit the side stop when engaging 5th...

... shouldn't this mean that all/any shifter installed with this revised geometry should need lateral adjustment.

Assuming the original shifter was properly adjusted left-to-right, then one would expect that swapping in the TWM (with no lateral adjustment) would result in the new one not coming close enough to the right side stop/reverse lockout "ramp/fin".


I guess I'm more surprised that some don't need lateral adjustment than I am about the ones that do.

Any thoughts on this???


It's also interesting that while 5th seems to benefit from having the shifter come in contact with the side stop (to prevent "overtravel" to the right, past 5th) that 1st/2nd don't seem to be sensitive to this or require the sidestop on the left side. Because of this, after the TWM install, I find that my lateral adjustment is biased to the right side... with the shift gate also pushed further over that way now.
Old Jan 7, 2009 | 07:32 AM
  #44  
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From: Mebane, NC
Originally Posted by c2vette
Go to the third msg down from Jeff, looks like they are out of stock right now https://www.chevyhhr.net/forums/show...ht=shop+manual
Thanks c2vette, same site I've been going too. I am on the list though. I need one for my 08 SS and the better halfs 09 LT which I assume will be the same for the most part...... hopefully so at a buck fifty each.
Old Jan 7, 2009 | 03:21 PM
  #45  
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Originally Posted by HPVOHHR
Since the geometry of the TWM shifter is different (pivot point location relative to the ends of the shifter arm), this allows for shorter throws in both the fore-aft AND side-to-side directions. With less shifter movement needed, obviously, the arm doesn't move as far in all directions as it used to.
The TWM short shifter reduces only fore and aft angular throw from the lengthened shaft below the pivot point as the pivot point is moved higher on the shaft. The side to side angular throw remains the same however since the length of the side arm on the short shifter is the same as on the stock shifter. While it is true that the linear side to side throw is reduced slightly with the TWM short shifter, it is due only to the reduced shifter height above the pivot point since the side arm controls side to side angular throw.


Originally Posted by HPVOHHR
So, given the way that the reverse lockout works, and the apparent need/helpfulness to have the right side of the shifter arm hit the side stop when engaging 5th... shouldn't this mean that all/any shifter installed with this revised geometry should need lateral adjustment.

Assuming the original shifter was properly adjusted left-to-right, then one would expect that swapping in the TWM (with no lateral adjustment) would result in the new one not coming close enough to the right side stop/reverse lockout "ramp/fin".
Since the side arm is the same length on the short shifter as on the stock shifter, the side to side angular throw (the angle the shifter travels through) remains the same. This means that the short shifter should in theory stop at the same location as the stock shifter in both right and left travel since the reverse lock portion is the same width as stock. In the Cobalt SS/SC shifter installations we have done no lateral adjustment was required. That being said, the right side of the stock reverse lock has some flexibility built in to it in the form of a plastic flexible tab while the TWM does not. It would be possible that the HHR SS shifter lateral adjustment is slightly different than the Cobalt SS/SC, and the stock shifter would still function the same because of the flexible tab on the right side of the reverse lock. If they are adjusted slightly differently from the factory, the solid aluminum reverse lock on the TWM short shifter would not be able to absorb this difference and the cable which controls side to side movement would need to be adjusted slightly.

Originally Posted by HPVOHHR
I guess I'm more surprised that some don't need lateral adjustment than I am about the ones that do.

Any thoughts on this???

It's also interesting that while 5th seems to benefit from having the shifter come in contact with the side stop (to prevent "overtravel" to the right, past 5th) that 1st/2nd don't seem to be sensitive to this or require the sidestop on the left side. Because of this, after the TWM install, I find that my lateral adjustment is biased to the right side... with the shift gate also pushed further over that way now.
Good point. The location of 1st/2nd is controlled by the cable reaching the end of its travel while the ideal location for 5th is where the shifter comes in contact with the side stop to prevent overtravel to the right as you mention.

We're still looking for an HHR SS locally to write a manual specifically for it and to determine why the HHR SS almost always seems to require lateral cable adjustment and the Cobalt SS/SC and SS/TC does not.

Thanks for your feedback.

Kevin
TWM

Last edited by TWM Performance; Jan 7, 2009 at 03:33 PM. Reason: Typo
Old Jan 7, 2009 | 06:16 PM
  #46  
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Thanks for your feedback Kevin@TWM.

I forgot about the little side arm/shaft... and that it was actually doing the pushing/pulling on the cable for the lateral motion. I was only thinking about the "bottom" arm, below the pivot. Oops.

So, the geometry of that side arm is supposed to mimic the original? hmmm

You mention in your response that the additional "play" in the stock reverse lockout piece may be less sensitive to this lateral adjustment. In my case at least, after the TWM was swapped in, it was a good 5+ mm out of position for reverse-lock/5th engagement on the right side... probably too far away to just be absorbed by the extra play/flexibility in the stock piece.


Not trying to nitpick or anything (I love the shifter - it's a really nice piece)... just describing my specific findings. And, of course, this is all easily adjusted.

Hopefully some more discussion will lead to a good root cause for this need to play with the lateral adjustment on the HHR.



Thanks again for your comments!
Old Jan 12, 2009 | 02:54 PM
  #47  
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Originally Posted by HPVOHHR
Thanks for your feedback Kevin@TWM.

I forgot about the little side arm/shaft... and that it was actually doing the pushing/pulling on the cable for the lateral motion. I was only thinking about the "bottom" arm, below the pivot. Oops.

So, the geometry of that side arm is supposed to mimic the original? hmmm

You mention in your response that the additional "play" in the stock reverse lockout piece may be less sensitive to this lateral adjustment. In my case at least, after the TWM was swapped in, it was a good 5+ mm out of position for reverse-lock/5th engagement on the right side... probably too far away to just be absorbed by the extra play/flexibility in the stock piece.

Not trying to nitpick or anything (I love the shifter - it's a really nice piece)... just describing my specific findings. And, of course, this is all easily adjusted.

Hopefully some more discussion will lead to a good root cause for this need to play with the lateral adjustment on the HHR.



Thanks again for your comments!
Hi HPVOHHR,

Thank you again for your feedback. It is odd that the reverse lock was 5+mm out of position upon installation of our short shifter. Hopefully we'll have an answer for you as soon as we locate an HHR SS locally.

BTW, thanks for the orders guys :)

Kevin
TWM Performance
Old Feb 26, 2009 | 09:16 PM
  #48  
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From: Austin, Texas
Originally Posted by Canuck
Yep, been there before with a Hurst Shifter, keep a blow touch in the car to warm
Finally put a leather cover off of a Camaro Shifter Ball on it. Required slight trimming at the seam, but otherwise a great fit.
Old Feb 26, 2009 | 11:50 PM
  #49  
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From: Lakenheath, UK
Originally Posted by c2vette
Finally put a leather cover off of a Camaro Shifter Ball on it. Required slight trimming at the seam, but otherwise a great fit.
i'd like to see that. any pics?
Old Feb 27, 2009 | 07:32 AM
  #50  
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From: Ontario Cdn
Originally Posted by c2vette
Finally put a leather cover off of a Camaro Shifter Ball on it. Required slight trimming at the seam, but otherwise a great fit.
Have to check that out!

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