Shaftmasters drive shaft
#1
ancient wizard...
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Shaftmasters drive shaft
Saw a pic of an aluminum 1st gen. driveshaft in a post by slvrghost about LED light conversion. Anyone have any dealings with this co.? How is the quality of their product? slvrghost, have you installed this in your car and can you give any info about it? Need to do something about the rear u-joint in my car,local driveline shops say no to rebuilding my oe shaft. Lots of testimonials online from musclecar guys who seem happy with them.
#2
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Custom Driveshaft
Saw a pic of an aluminum 1st gen. driveshaft in a post by slvrghost about LED light conversion. Anyone have any dealings with this co.? How is the quality of their product? slvrghost, have you installed this in your car and can you give any info about it? Need to do something about the rear u-joint in my car,local driveline shops say no to rebuilding my oe shaft. Lots of testimonials online from musclecar guys who seem happy with them.
Costs 383.00 Shipped
3in dia
TII trans slip yoke
GSL-SE rear Flange
Installed in a 1982 GSL with GSL-SE rearend with Moser Axles and a OS Giken LSD
#3
Old [Sch|F]ool
Slight threadjack - how were the Moser axles as compared to OE? Did they neck down right at the bearing or were they max thickness all the way out until the very ends?
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...OS Giken is not installed yet, finishing up getting the engine running first.
...All the way out to the end...and they are dual pattern, 4x110 and 4x114
...All the way out to the end...and they are dual pattern, 4x110 and 4x114
#5
Old [Sch|F]ool
Ugh... so they ARE thinner than stock. The middle isn't where I'm breaking the stock ones but that's still very discouraging.
I came to this thread because I will be needing a driveshaft to go from N/A trans to 9" Ford since I ran out of GSL-SE axles to break...
I came to this thread because I will be needing a driveshaft to go from N/A trans to 9" Ford since I ran out of GSL-SE axles to break...
Last edited by peejay; 06-14-15 at 06:18 PM.
#7
Old [Sch|F]ool
From looking at the picture of the axles, they neck down right at the bearing, stock axles don't neck down until about the halfway point.
HP ratings are always a crock. I'm breaking OE axles with about half that power, at the splines. By definition if they bolt in then they have the same spline size, so they still have that as a weak point. I doubt they have found a steel with over twice the strength as the OE axles, as steel doesn't really have that much variability in strength (maybe 15-20% at most). Meanwhile there are people who reliably put down 600hp through the smaller Series 2 axles (24 vs 26 spline).
However if the axles are narrower in the middle, that means they are more susceptible to bending from side loads, which is kind of a factor even with our bolt-in end bearing style. The less the axle can resist the side loads, the more the bearing has to, and the bearing will fail more quickly. Especially with crap bearings instead of Koyo.
HP ratings are always a crock. I'm breaking OE axles with about half that power, at the splines. By definition if they bolt in then they have the same spline size, so they still have that as a weak point. I doubt they have found a steel with over twice the strength as the OE axles, as steel doesn't really have that much variability in strength (maybe 15-20% at most). Meanwhile there are people who reliably put down 600hp through the smaller Series 2 axles (24 vs 26 spline).
However if the axles are narrower in the middle, that means they are more susceptible to bending from side loads, which is kind of a factor even with our bolt-in end bearing style. The less the axle can resist the side loads, the more the bearing has to, and the bearing will fail more quickly. Especially with crap bearings instead of Koyo.
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#9
ancient wizard...
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Shaftmasters drive shaft
Slammed GSL, have you driven the car with this shaft installed,feel any difference, no vibration. Did you need to give them measurements/dimensions. Seen prices on other replacement drive shafts that aren't aluminum that are very close. Anyone know of any other alternatives?
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I had this one made due to the 2nd Gen cross member/suspension conversion I did on my car with the TII motor/tranny.
Everything from the firewall forward is either custom or 2nd GEN.
I have not driven the car yet so I can't testify to performance of the driveshaft.
Everything from the firewall forward is either custom or 2nd GEN.
I have not driven the car yet so I can't testify to performance of the driveshaft.
Last edited by Slammed_GSL; 06-14-15 at 11:33 PM.
#12
Old [Sch|F]ool
To be honest I'd probably get the steel one over the aluminum one, the steel one can be smaller in diameter which is critical in my application. I need all the space I can for muffler clearance
But the fact that locally a steel driveshaft is over $500 for an import, makes their deal way awesome.
Slammed_GSL, if you're not having any problems then that is awesome. I tend to be a bit harder on parts than most people so I want to make sure I get the absolute best because that is always cheaper than getting the best after screwing around with less-than-best. Doing it once always saves money. But for forum edification, the stock GSL-SE axles I have here are 32.6mm before the neck down point and 27.5mm after.
But the fact that locally a steel driveshaft is over $500 for an import, makes their deal way awesome.
Slammed_GSL, if you're not having any problems then that is awesome. I tend to be a bit harder on parts than most people so I want to make sure I get the absolute best because that is always cheaper than getting the best after screwing around with less-than-best. Doing it once always saves money. But for forum edification, the stock GSL-SE axles I have here are 32.6mm before the neck down point and 27.5mm after.
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Drivelines, Clutches, Transmissions, Rear End Parts & Service | Proven Force Minneapolis MN
#14
ancient wizard...
Thread Starter
Bringing this back, just got back from 100 mile round trip to 3rd place i've taken this d-shaft to to have u-joints replaced. No go again,guy wants me to leave it there while he looks for a yoke. Showed me some 280z shafts he had he was looking for yokes for them. Front yoke/rear flange are perfect on mine,car has vibration at speed because of worn u-joints. Why do the yoke and flange need to be replaced?-They don't. Kansascityrepu,you had just joints replaced in yours,keeping your original flange/yoke,correct. Don't want to replace these parts as i feel they are more than serviceable,just need u-joints! Don't want to buy a complete new shaft if not needed,but will if have to. Located in Northern Maryland if anyone has any recommendations,will gladly follow up any suggestions. Looking for new in meantime. P.S. did not leave my d-shaft with this last company, did with previous two. Haven't driven the car since August,been too long..
#15
GET OFF MY LAWN
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Rockford driveline has the joints. Buy them and walk into any driveshaft shop and they can do it. Many don't know you can get u joints for them.
Staked-In U-Joints
Staked-In U-Joints
#17
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When I went to my local shop, I told them which Rockford u joints I needs and he walked right over to his shelf and had them in stock. The stakes u joints are easy to remove. Just requires cutting the small amount of metal on the end that is holding them in.
If a shop can't deal with stakes u joints, I would not call them a drive shaft shop.
If a shop can't deal with stakes u joints, I would not call them a drive shaft shop.
Last edited by KansasCityREPU; 12-16-15 at 07:24 PM.
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#18
ancient wizard...
Thread Starter
Rockford driveline has the joints. Buy them and walk into any driveshaft shop and they can do it. Many don't know you can get u joints for them.
Staked-In U-Joints
Staked-In U-Joints
#19
ancient wizard...
Thread Starter
When I went to my local shop, I told them which Rockford u joints I needs and he walked right over to his shelf and had them in stock. The stakes u joints are easy to remove. Just requires cutting the small amount of metal on the end that is holding them in.
If a shop can't deal with stakes u joints, I would not call them a drive shaft shop.
https://www.youtube.com/watch?v=p_kZmzA_Bso
If a shop can't deal with stakes u joints, I would not call them a drive shaft shop.
https://www.youtube.com/watch?v=p_kZmzA_Bso
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