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New MW CV dragster driveshafts now available
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DRR S/Pro
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quote:
Originally posted by Greg Kelley:
quote:
Originally posted by seabass:
Looks a lot like my Goethe


How long have you had it JR? Anny issues with the boots?

Did you put the special pinion support on your spare center ?

Did you and your Dad both do it?


3 years , all I’d did was put it in, not sure what the special pinion support is, I just changed the pinion flange on both of my centers and bolted it in. I sent it in once and it was perfect.


J.R. Baxter

""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen."

2024 Miller
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Posts: 1508 | Location: Waxahachie | Registered: July 04, 2005Reply With QuoteReport This Post
DRR Elite
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J.R. did you gain MPH?
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR S/Pro
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I don’t really know that Ed, rarely make it thru the traps w/o lol... I did it over the winter as well. I did notice it being smoother tho


J.R. Baxter

""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen."

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Posts: 1508 | Location: Waxahachie | Registered: July 04, 2005Reply With QuoteReport This Post
DRR Elite
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So other than the car seems to accelerate smoother and it's possibly safer, do you feel it is worth the $ as a replacement to a good, traditional u joint driveshaft?
 
Posts: 13522 | Location: NJ | Registered: August 20, 2000Reply With QuoteReport This Post
DRR S/Pro
Picture of Big Steve
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J.R, Isnt the Goethe a carbon fiber shaft? This one is 300M steel
 
Posts: 2371 | Location: Moving back to the door side | Registered: April 30, 2010Reply With QuoteReport This Post
DRR S/Pro
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quote:
Originally posted by Big Steve:
J.R, Isnt the Goethe a carbon fiber shaft? This one is 300M steel


No not carbon at all. Solid steel shaft....


J.R. Baxter

""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen."

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Posts: 1508 | Location: Waxahachie | Registered: July 04, 2005Reply With QuoteReport This Post
DRR S/Pro
Picture of "The Bender"
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quote:
Originally posted by seabass: I did notice it being smoother tho


That's because of the constant velocity joints.

When that driveshaft is spinning 7000+RPM the small velocity changes of the U-joint shaft are magnified. The velocity changes twice with every revolution, at 7000 RPM that's 233 times per second.


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DRR S/Pro
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quote:
Originally posted by "The Bender":
Top, if the driveshaft angle is 0 then there is no accel-decel, any angle changes that. But if properly set up there shouldn't be much (if any) angle. When a suspended dragster leaves and the shocks change length it will always cause angle change, having such a short driveshaft in a dragster is where the problem lies.


When the angle of the output shaft is parallel to the yoke at the rear these is no variation in rotational speed between the two, so between the rear setup along with data on rear end movement you can really minimize this issue. And ya, short DS make it worse.
 
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DRR Sportsman
Picture of Bad News
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https://www.youtube.com/watch?v=Idk3BVDVHq4
The angles are excessive, but it gets the point across.
 
Posts: 868 | Location: ft laud | Registered: September 02, 2004Reply With QuoteReport This Post
DRR S/Pro
Picture of "The Bender"
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quote:
Originally posted by TOP38:
quote:
Originally posted by "The Bender":
Top, if the driveshaft angle is 0 then there is no accel-decel, any angle changes that. But if properly set up there shouldn't be much (if any) angle. When a suspended dragster leaves and the shocks change length it will always cause angle change, having such a short driveshaft in a dragster is where the problem lies.



When the angle of the output shaft is parallel to the yoke at the rear these is no variation in rotational speed between the two, so between the rear setup along with data on rear end movement you can really minimize this issue. And ya, short DS make it worse.


Agree 100%


272" Spitzer
540 Chevy
The Blower Shop XR1
FTI XPM Series Converter
FTI Level 6 Powerglide
3.69@199
.916 60'

2017 Bradenton Heads Up Madness
Open Outlaw Champ

2018 PDRA T/D #5
2019 PDRA T/D #2

2020 Retired From T/D Competition....

2020 Bradenton NMCA Hemi Shootout Winner

2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass.
 
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DRR S/Pro
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quote:
Originally posted by DragRaceResults:
Goethe use to work at MW. I'm sure they did a deal.
winner winner


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DRR Top Comp
Picture of Curly1
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On a suspended car as the suspension moves the yoke one the transmission slides in and out some.

Does this Mark Williams unit able to handle some in and out travel like the yoke does?


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DRR S/Pro
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Yes


272" Spitzer
540 Chevy
The Blower Shop XR1
FTI XPM Series Converter
FTI Level 6 Powerglide
3.69@199
.916 60'

2017 Bradenton Heads Up Madness
Open Outlaw Champ

2018 PDRA T/D #5
2019 PDRA T/D #2

2020 Retired From T/D Competition....

2020 Bradenton NMCA Hemi Shootout Winner

2021 getting back into bracket racing with a Gen3 Hemi powered 87 Cutlass.
 
Posts: 3088 | Location: Yes | Registered: July 08, 2009Reply With QuoteReport This Post
DRR S/Pro
posted Hide Post
quote:
Originally posted by 1320racer:
So other than the car seems to accelerate smoother and it's possibly safer, do you feel it is worth the $ as a replacement to a good, traditional u joint driveshaft?


without a doubt yes. I wouldn't hesitate to get another one I had a new car. Brett now has a all black one I just saw, looks great.


J.R. Baxter

""Fathom the hypocrisy of a Government that requires every citizen to prove they are insured ..but not everyone must prove they are a citizen."

2024 Miller
Rolla Competition Engines
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Abruzzi
 
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DRR Elite
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quote:
Originally posted by Bad News:
https://www.youtube.com/watch?v=Idk3BVDVHq4
The angles are excessive, but it gets the point across.


They talk in a little different terms than we normally use. But the video clearly shows that when the pinion angle is the same between the two....or 0 pinion, that the velocity of the output is constant regardless of operating angle.

A four link does well at maintaining pinion angle even when the shaft is short, and even though the operating angle changes. So if what we are looking for is constant output velocity, don't we already pretty much have that?


Foxtrot Juliet Bravo
 
Posts: 6320 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Elite
posted Hide Post
quote:
Originally posted by "The Bender":
Top, if the driveshaft angle is 0 then there is no accel-decel, any angle changes that. But if properly set up there shouldn't be much (if any) angle. When a suspended dragster leaves and the shocks change length it will always cause angle change, having such a short driveshaft in a dragster is where the problem lies.


I guess I was responding to you Bender. I always call it pinion angle, and operating angle. Operating angle I call the difference between the output and the shaft itself. This does change in a dragster. But the term is a little different than what they show in the video. The other term for me is pinion angle, and that is the difference between output and inputs....no reference to the shaft at all. The pinion angle should not change in a 4 link setup, and thus there should be no speed up/slow down. Am I thinking correctly? There may be other advantages to the CV setup. But I don't see the velocity as one that needs fixin.


Foxtrot Juliet Bravo
 
Posts: 6320 | Location: Illinois | Registered: July 08, 2004Reply With QuoteReport This Post
DRR Sportsman
Picture of Showtime296
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I just got mine from Brett Goeth took just over two weeks just like he told me on the phone and also kept me up to date on the progress of my shaft. Bolted in with no problems. I’ll let you know if there is any difference next week but like Chris I did it for safety. Brett is a good guy it’s not his day job.....And he builds an awesome product


Performance Glass
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DRR Pro
Picture of TORQIN
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I had a very similar experience...good guy IMO
 
Posts: 1749 | Location: Houston, Tx. | Registered: November 27, 2008Reply With QuoteReport This Post
DRR Sportsman
Picture of Showtime296
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quote:
Originally posted by TORQIN:
I had a very similar experience...good guy IMO


Yeah but yer a trouble maker, at least that’s the way I remember it


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Posts: 258 | Location: Eattin' a Sammich | Registered: May 03, 2004Reply With QuoteReport This Post
DRR Pro
Picture of TORQIN
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Chit man, I never been booted off of a website...

Full Moon
Tip PC
Didn't think of that
 
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