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Mark Yacavone 07-21-2022 12:08 AM

Clutchless Stocker
 
I'm thinking of trying to make one of my transaxles into a clutchless deal.
I know it's blatantly against the rules but I see guys on Facebook swinging away and never moving their left leg after launch. I guess it's a look the other way deal like heads and manifolds.
Bobby F sounded shocked when Jim Hughes said he uses the clutch to shift LOL

I know you couldn't do it with the old DNE T 10 style square lugs.You could probably pull it out of one gear but would surely burr up the next one.
I'm not familiar with Jericos.
Could someone post a pic of a gear shifting face and the slider?
Might as well join em' ;-)

TOSTO RACING 07-21-2022 08:12 AM

Re: Clutchless Stocker
 
The clutchless trans will bounce out of gear when you rock the car in gear. A clutch trans will not come out of gear. I would look into face plating your trans if its possible. Tech will check this and I have been checked before. Just a heads up for you while you are building your clutch trans ;)

ss3011 07-21-2022 10:06 AM

Re: Clutchless Stocker
 
We got a tour of Liberties facility and he builds most of the transmissions for Pro Stock . Those transmissions are truly "clutchless" , once the car leaves the starting line there is never a point on the run that torque is not going through the drive shaft . This is a lot different that a "slick shifted" transmission , that drops torque to zero each time the gear shift is pulled . The engineering involved with making a true clutchless transmission is quite impressive !

Mark Yacavone 07-21-2022 11:37 AM

Re: Clutchless Stocker
 
Quote:

Originally Posted by TOSTO RACING (Post 664615)
The clutchless trans will bounce out of gear when you rock the car in gear. A clutch trans will not come out of gear. I would look into face plating your trans if its possible. Tech will check this and I have been checked before. Just a heads up for you while you are building your clutch trans ;)

Yup. About 25 years ago, NHRA would check for clutchless by having you put it in each gear ,and they would rock the car back and forth to see if it would stay in gear.
Checked at Indy..Doug Nash 4+ 1 (minus 1)..No problem.
Anyone been checked by a ghost tech man lately?

Sean Marconette 07-21-2022 07:09 PM

Re: Clutchless Stocker
 
1 Attachment(s)
Mark
The clutch assisted sliders and faceplates have different tapered angles so they lock together in my GF5R. The clutchless have a straight angle on the faceplate and the sliders have a ramp with a straight angle, so they do not lock. Just because someone is not using the clutch to shift means nothing. How they have the clutch setup and a trans that is face plated and enough leverage to pull the shifter out of gear, and into the next gear. Or hitting the rev limiter, will unload the trans and allow easy shifting.

A clutchless will not stay in gear unless kept under a slight load. A clutch assist will stay in gear without a load. My trans was clutch assist when my car was a stocker, I never used the clutch to shift going down the track. When I switched to SS I ran the same exact clutch assist trans, until I changed gearing and had it converted to clutchless for $250. The only changes were the clutchless sliders and faceplates. The picture is my trans apart for service last winter. 5th gear is not clutchless all other gears are clutchless and show the ramp. 1st, 3rd and 4th gear sliders are chewed up from the clutch being set too tight, and driver error over several seasons.

Pierce Jones 07-21-2022 09:03 PM

Re: Clutchless Stocker
 
2 Attachment(s)
This season I put a re-geared clutch assisted ;) Liberty in the car that my dad has had for awhile. It picked up over my clutch assisted :mad: GForce. The pictures below are a broken faceplate I just changed in the Liberty (first broken Liberty part). In speaking with Brad (great guy) at Liberty this is the stock 7 degree angle. He mentioned that they've made 5, 3, .5 degree faceplates which apparently would be marked as such. I believe that some sort of surface treatment was applied to this faceplate which is why it's shiny.

Mark Yacavone 07-23-2022 04:00 PM

Re: Clutchless Stocker
 
Yes, I understand the clutchless set-up.
Now, those faceplates only have 7 notches. Assume the slider then has a matching number of engagement dogs?
What holds the plates on? Those pictured don't look like they've been welded.
Picture of slider, anyone?
See, I told you I don't know anything about this modern stuff. ;-)

Frank Castros 07-23-2022 06:50 PM

Re: Clutchless Stocker
 
Herb McCandless is no longer a contestant.

Frank Castros 07-23-2022 06:52 PM

Re: Clutchless Stocker
 
But...................He should be!

Mark Yacavone 08-04-2022 11:32 AM

Re: Clutchless Stocker
 
Nobody wants to talk about this subject?
Understandable ,but c'mon..everybody's doin' it.. ;-)

weedburner 08-04-2022 07:59 PM

Re: Clutchless Stocker
 
Here's a pic of a Saginaw that I faceplated 3rd gear using Liberty Faceplate parts made for a TKO. Basically, split one side of the TKO slider off using a die grinder attached to my lathe's tool holder with a thin cutoff wheel, then welded that onto the Saginaw slider...

https://grannys.tripod.com/faceplatesaginaw3rd650w.jpg

Here's a pic of a Toploader 1/2 slider that i added TKO faceplate parts to 2nd gear using the same method. This pic shows the parted off TKO slider piece sitting on top of the Toploader slider...

https://grannys.tripod.com/faceplate...slider650w.jpg

Here's a pic of the two parts after they were welded together, after I removed the TKO's inner teeth...

https://grannys.tripod.com/faceplate...welded650w.jpg

Here's a pic of some Liberty TKO parts before they were modified...

https://grannys.tripod.com/faceplateparts650w.jpg

I would imagine you could use some Gforce .5 degree parts to do the same, but you would need some pretty robust shift forks/rails/etc if you plan to jerk your transaxle into the next gear like a G101A without using the clutch pedal.

Grant

Mark Yacavone 08-05-2022 10:56 PM

Re: Clutchless Stocker
 
Quote:

Originally Posted by weedburner (Post 665253)
Here's a pic of a Saginaw that I faceplated 3rd gear using Liberty Faceplate parts made for a TKO. Basically, split one side of the TKO slider off using a die grinder attached to my lathe's tool holder with a thin cutoff wheel, then welded that onto the Saginaw slider...

https://grannys.tripod.com/faceplatesaginaw3rd650w.jpg

Here's a pic of a Toploader 1/2 slider that i added TKO faceplate parts to 2nd gear using the same method. This pic shows the parted off TKO slider piece sitting on top of the Toploader slider...

https://grannys.tripod.com/faceplate...slider650w.jpg
Thanks for your input. I have a better idea why this works now, compared to the old stuff.

Here's a pic of the two parts after they were welded together, after I removed the TKO's inner teeth...

https://grannys.tripod.com/faceplate...welded650w.jpg

Here's a pic of some Liberty TKO parts before they were modified...

https://grannys.tripod.com/faceplateparts650w.jpg

I would imagine you could use some Gforce .5 degree parts to do the same, but you would need some pretty robust shift forks/rails/etc if you plan to jerk your transaxle into the next gear like a G101A without using the clutch pedal.

Grant

I'm going to assume you need the beefed up forks, rails, etc to pull it out of the lower gear. It's going into the next gear, without a doubt, the way I see it.
I wonder if an additive , like maybe teflon would lower the friction on the sides of the gear lugs? Once you eliminate the brass or friction face of the blocking rings, I don't know what it would hurt in short (1/4 mi.) bursts.

weedburner 08-07-2022 02:22 PM

Re: Clutchless Stocker
 
Hitting a rev limiter will reduce torque applied to the lugs, and in-turn make it easier to pull out of gear. From there you might need some sort of internal travel stop to absorb some of the impact to the shift fork due to sudden engagement. On the Toploader I installed travel limiters on the shift rails, the stops keep the inertia of the shift rails from being passed along to the stock forks when the faceplate lugs suddenly jerks the slider into gear. Here you can see my homemade aluminum stop sleeves installed on the shift rails...

https://grannys.tripod.com/toploader...larlengths.jpg

Grant


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