Dynotech - Strike 2

[Comin' in Hot]

Strike 1

Some of you might remember this thread: http://www.mercurymarauder.net/forums/showthread.php?t=80720 Where I sent my 3.5" Dynotech DS out to get new U-joints and have it balanced. I was quoted a 3-4 day turnaround from time of arrival, but Dynotech miss placed it and it took just shy of a month to be returned.

Strike 2

I decided to put my new 4" Aluminum DS (1" longer than stock so I can lose the pinion flange spacer).

I took out my 3.5" DS(stock length) and **** it next to the new one, and they were both the same length 55.5".

I called them Monday, they agreed they screwed up and they will make me a new one.

I asked when I would receive it and was then told they would try to fit it in production this week. I nicely said, "It was a screw up on your end, and you "TRY" to get it done this week, I was planning on taking the car somewhere this weekend and I need it by Friday."

Lets see when it actually arrives.


First the GV problems, now Dynotech for a second time. I'm just so frustrated trying to sort out my driveline.

[Comin' in Hot]

apparently we cant use a word that starts with "L" and ends with "aid" anymore

[Mebot]

Koo****?

sent from a Samsung Galaxy far far away...

[sailsmen]

Good Luck! Keep us posted.

[lji372]

Koo****?

sent from a Samsung Galaxy far far away...

Agh! I was just going to put koo**** but you beat me to it:alone:

Koolucky doesn't sound right:confused:

[babbage]

Geesh, sorry for your troubles.

Lemon-aid?

I've heard good things about dennys driveshaft for new u joints and 10,000 rpm balance - http://www.dennysdriveshaft.com/

If it comes to strike 3.
http://www.pstds.com/critical_link_drive_shafts.htm
PST carbon fiber driveshaft. One or 2 members here got them from PST. Here's their blurb I want one just cause they are the best. We could do a group buy? lol :cool:





Lighter than steel or aluminum.
Three times torsional strength of steel.
Torsional spring rate allows better tire hook-up.
Torsional spring rate allows smoother shifting.
Less shock load to the differential.
Eliminates or dampens high speed vibrations.
Reduces transmission and differential breakage.
Characteristics can be varied by changing the wind, angles or diameter. PST offers both steel and 7075 Billet Aluminum yokes.
In drag racing applications - a better 60 Ft. time.
ET's have been lowered in some cases by as much as .120.
In stock car racing better control out of corners is the result of the torsional spring rate.
In road racing smoother shifting and better durability of transmission and differential have been reported.
Tested on Cobra's at 180 MPH on Dyno with no vibrations.
A much greater safety factor - carbon fiber will return to a fiber and not create shrapnel under the car, as would aluminum or steel shafts.

Should be good for at least 120 with 4.30's

[justbob]

Sucks to hear. They sent a customer one and the slip yoke was wrong.. I had him call them up and they wanted me to use the OEM slip yoke and make it work! How hard could this shaft be to make right??


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

[Comin' in Hot]

Geesh, sorry for your troubles.

Lemon-aid?

I've heard good things about dennys driveshaft for new u joints and 10,000 rpm balance - http://www.dennysdriveshaft.com/

If it comes to strike 3.
http://www.pstds.com/critical_link_drive_shafts.htm
PST carbon fiber driveshaft. One or 2 members here got them from PST. Here's their blurb I want one just cause they are the best. We could do a group buy? lol :cool:

Should be good for at least 120 with 4.30's


Dynotech makes a carbon fiber driveshaft. It's what I originally wanted until their tech told me if I am going to drive it on the street to go aluminum. If something on the road bounces up and hits the shaft it will basically explode.
The bouncing debris factor is why they are not used in Nascar.

[Comin' in Hot]

Sucks to hear. They sent a customer one and the slip yoke was wrong.. I had him call them up and they wanted me to use the OEM slip yoke and make it work! How hard could this shaft be to make right??


Self proclaimed Builder Of Badassery.

Buy it, Break it, Build it BETTER.
"Since 2004"

Unbelievable, that would void the warranty. It clearly states that any modification to the shaft, including changing u-joints would void the warranty unless performed by Dynotech.

[bigcowl-imp]

I dropped a drive shaft off to Dynotech on Monday afternoon and got a call this morning that its ready....thats 1 and a half day turn around time...........it helps when you tell them you work for Roush..

[Dennis Reinhart]

Dynotech makes a carbon fiber driveshaft. It's what I originally wanted until their tech told me if I am going to drive it on the street to go aluminum. If something on the road bounces up and hits the shaft it will basically explode.
The bouncing debris factor is why they are not used in Nascar.


It's Junk Jerry W bought one never drove the car and the flange became separated they did nothing for him.

[Triple Threat]

I use a PST 4in alum. driveshaft in the race car at 165 in the quarter there are no problems.I just ordered another one from them on Monday for purple and it will be here today.

[MOTOWN]

Ive used Dennys in the past, and will be ordering a 1350 series u joint 4"aluminum shaft the Marauder.

[Comin' in Hot]

Ive used Dennys in the past, and will be ordering a 1350 series u joint 4"aluminum shaft the Marauder.

No one makes a 1350 slip yoke for the 4r70w, so you are stuck with 1330 for the front.

[MOTOWN]

No one makes a 1350 slip yoke for the 4r70w, so you are stuck with 1330 for the front.

Strange and DTS say this wont be a problem

[Comin' in Hot]

Maybe they use a 1330/1350 u-joint, but from what I'm told the combination u-joints are only made with grease fittings and are not as strong as the non greasable 1330 u-joints

[MOTOWN]

Maybe they use a 1330/1350 u-joint, but from what I'm told the combination u-joints are only made with grease fittings and are not as strong as the non greasable 1330 u-joints

Give strange a call 1350 series tans slip yoke $79 i think, and you do know any machine shop can modify a 1330 slip joint to accept 1350 u joints, ask me how i know this;)

[bigcowl-imp]

Ive used Dennys in the past, and will be ordering a 1350 series u joint 4"aluminum shaft the Marauder.

I don`t think Denny`s can high speed balence like Dynotech can......

[Comin' in Hot]

It's Junk Jerry W bought one never drove the car and the flange became separated they did nothing for him.

Dennis, my name is Derek Witman, I also want you to remember my screen name, Comin' in Hot. I am the current owner of Keith Shuley's DBP.

Do not ever reply to one of my posts again, your input is not valid to me, and how dare you complain about someone's product. I've spent the last two years straightening this car out. You Sir, are a hack.

As for my driveshaft issues, if your supposed Art Carr transmission would not have failed, I would not have to order a replacement Dybotech DS. I only have to do so because Lentech will not use the longer output shaft/ tail housing in their transmissions and I want to make sure I have enough spline contact due to the 4r70w's recessed slip yoke splines.

[sailsmen]

Does aluminum have that big an advantage over steel when you consider strength vs reducing rotational mass?

[Chi Stallion]

I've got screwed real bad by Dynotech and im still not happy with how they handled it. Shady business on their part and they didn't really bother taking care of my situation how they should of. It's not cool being lied to and scewed and blowing almost 800 dollars on a driveshaft that should of been done right the first time.

If I can do it again I'd drive straight up to Dynotech and punch Jim V. in his mouth.


Sent from my iPhone 5 using Tapatalk

[MOTOWN]

I don`t think Denny`s can high speed balence like Dynotech can......

I do! Dennys built the drive shaft in my Turbo Buick that went deep into the nines, that shaft was very smooth!

Did i just say that out loud:confused:

[martyo]

I do! Dennys built the drive shaft in my Turbo Buick that went deep into the nines, that shaft was very smooth!

Did i just say that out loud:confused:

Quoted for posterity.

[MOTOWN]

Quoted for posterity.

LMAO:lol::lol:

[Mr. Man]

Geez Derek I'm sorry this project is turning into such a nitemare. I don't know if these guys can help you but they advertise military spec balancing. Might be worth a phne call if you think they can help. They are in Fairfield NJ if I remember right.

www.axle-exchange.com (http://www.axle-exchange.com)

[Joe Walsh]

I use a PST 4in alum. driveshaft in the race car at 165 in the quarter there are no problems.I just ordered another one from them on Monday for purple and it will be here today.

+1!

I have a PST Carbon Fiber Driveshaft and it is very light and very rigid.
They told me it was good for 1,000+ HP....I'm not even close to testing that limit.
It cost a bunch of coin, but I'm only buying an aftermarket driveshaft ONCE.
http://www.mercurymarauder.net/forums/showthread.php?t=15627&highlight=PST

Sorry to hear about your continued problems with DynoTech...:(