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The Hellcat Blazer

Just a budget Blazer build out of control
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ABH Customs said:
There are no speed-rated long travel front driveshafts, so unfortunately I'm not allowed to do 4wd burnouts on pavement :(. Max speed in 4x4 (on street at least) would be 22.5mph.
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Is this really true? I mean, it depends on your definition of long-travel and what's really needed for the application. A really long travel agricultural spline can't be balanced very well, but potentially can be balanced *some*, like more than 22MPH. However, there are lots of us on the street/trail with mid-travel driveshafts and flexy ORD springs. One example would be Tom Woods X spline: https://4xshaft.com/blogs/faq/s-spline-vs-x-spline?_pos=5&_sid=5f1a37234&_ss=r.

What we know doesn't work is the standard ("S") spline.

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Blue85 said:
Is this really true? I mean, it depends on your definition of long-travel and what's really needed for the application. A really long travel agricultural spline can't be balanced very well, but potentially can be balanced *some*, like more than 22MPH. However, there are lots of us on the street/trail with mid-travel driveshafts and flexy ORD springs. One example would be Tom Woods X spline: https://4xshaft.com/blogs/faq/s-spline-vs-x-spline?_pos=5&_sid=5f1a37234&_ss=r.

What we know doesn't work is the standard ("S") spline.

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In the description, it states in all caps "PART TIME LOW SPEED ONLY" or something of the like. I've made lots of calls, nothing that can be properly balanced. Tom Woods was the first place I looked. It's because of the tolerance for the slip, if you find one that can be high-speed balanced please let me know immediately!
 
Blue85 said:
What front shaft are you running?
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None right now, waiting for the suspension install to measure for my shaft. I'm hoping to get to that this weekend. I was gonna order a Tom Woods Xtreme Travel or whatever it's called, if I can't find another option
 
PSA: 11 more calls and I was put in touch with Dynamic Drivelines. He said a high speed shaft with 7" slip should be no problem, he'd balance it at ~5000rpm but the balancer goes up to 9k if needed. Price is ~695, being that Tom Woods shaft is ~570 and low speed only, I think it'll be worth the expense! For reference, the Tom Woods shaft is only balanced to 1000rpm.
 
Considering the amount of high horsepower diesels running full time 4wd with front driveshafts while drag racing, I'm calling some BS. Hell I ran my factory dodge front driveshaft up to 110mph for 10 years.
 
It sounds like you are specifically discussing this: https://4xshaft.com/blogs/general-t...avel-drive-shafts?_pos=6&_sid=a83afb118&_ss=r

You can review this thread, as various ideas and suppliers are discussed https://ck5.com/forums/threads/how-much-front-driveshaft-slip.324435/. A lot of us are having success with ORD "12 inch travel" leaves, no limit straps, no sway bar and the X-spline (or similar), so what's so much different about your rig? Is it the requirement for big torque? Have you measured full stuff and full droop with your setup to find the actual slip travel?
 
centexk5 said:
Considering the amount of high horsepower diesels running full time 4wd with front driveshafts while drag racing, I'm calling some BS. Hell I ran my factory dodge front driveshaft up to 110mph for 10 years.
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The problem becomes the travel. What high power diesels have long travel? Feel free to do your own research, but I called probably 30 places, almost all pointed me to Tom Woods
 
Blue85 said:
It sounds like you are specifically discussing this: https://4xshaft.com/blogs/general-t...avel-drive-shafts?_pos=6&_sid=a83afb118&_ss=r

You can review this thread, as various ideas and suppliers are discussed https://ck5.com/forums/threads/how-much-front-driveshaft-slip.324435/. A lot of us are having success with ORD "12 inch travel" leaves, no limit straps, no sway bar and the X-spline (or similar), so what's so much different about your rig? Is it the requirement for big torque? Have you measured full stuff and full droop with your setup to find the actual slip travel?
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I'm just quoting the driveshaft manufacturers, clearly stating that they are low speed only. Some reviews have also mentioned that the front driveshaft starts HOWLING over the rated speed, lol (1000 shaft rpm).

Per my one of my recent posts, I haven't installed the suspension yet to get actual measurements, but ORD states that they recommend at least a 7" slip, 6" MAY work if its perfectly set up. Hoping to get the suspension at least started this weekend
 
Blue85 said:
It sounds like you are specifically discussing this: https://4xshaft.com/blogs/general-t...avel-drive-shafts?_pos=6&_sid=a83afb118&_ss=r

You can review this thread, as various ideas and suppliers are discussed https://ck5.com/forums/threads/how-much-front-driveshaft-slip.324435/. A lot of us are having success with ORD "12 inch travel" leaves, no limit straps, no sway bar and the X-spline (or similar), so what's so much different about your rig? Is it the requirement for big torque? Have you measured full stuff and full droop with your setup to find the actual slip travel?
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Going to the gym, but I'll read into that later!
 
ABH Customs said:
Maybe it's a liability thing, gets them out of a warranty replacement for people pushing the limits
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My local driveline shop offered me up to 18" slip, fully splined end to end, balance for road speed.
He is also the area's only big rig driveline shop.
Options are out there, but like you said some want eliminate some warranty claims by putting unreasonable restrictions
 
imiceman44 said:
My local driveline shop offered me up to 18" slip, fully splined end to end, balance for road speed.
He is also the area's only big rig driveline shop.
Options are out there, but like you said some want eliminate some warranty claims by putting unreasonable restrictions
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WOW! We're gonna need his info here on the thread for future reference, can you post it up? Maybe we'll get him a few orders!
 
Got the drag link fabbed, my local steel supplier had 1.25" .125 wall for $6/foot. I figured that would be stout enough, 1.5" seemed like overkill. Crossover steering and front suspension are done (yes, the drag link is dirty), starting the rear suspension after a lunch break

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ABH Customs said:
Got the drag link fabbed, my local steel supplier had 1.25" .125 wall for $6/foot. I figured that would be stout enough, 1.5" seemed like overkill. Crossover steering and front suspension are done (yes, the drag link is dirty), starting the rear suspension after a lunch break

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Since you like high speed stuff, I highly recommend you add a panhard bar in the front (same length as and parallel to the draglink), it will greatly improve steering feel and tightness when using crossover steering with leaf springs, just look at most Jeeps or Fords with crossover steering and leaf springs.
 
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folkenheath said:
Since you like high speed stuff, I highly recommend you add a panhard bar in the front (same length and parallel to the draglink), it will greatly improve steering feel and tightness when using crossover steering with leaf springs, just look at most Jeeps or Fords with crossover steering and leaf springs.
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I've never seen a panhard with leaves, but I have 3.5 extra feet of that .125 wall DOM so I'll have to play around with it!

Time to start crackin on these traction bars, these are BEEFY. I found my instant center yesterday, and my center to center length is gonna be ~87cm. I wish ORD coped one end for the bushing side, I'm gonna have to grind them for an hour :haha:
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She's officially long travel!

No limit straps and stock driveshaft means VERY mild driving while I wait for my driveshafts (probably 3 WEEKS, AGH) and limit straps. I'll cut the U bolts down when I go in to set up the limit straps.

The stock driveshaft is locked up for the last 3-4" of travel. Been talking to Dynamic Drivelines, we're gonna run 1350 U-joints up front and 1410 in the rear for the extra angle. I'm having a 10 bolt 1410 yoke turned down for the 12 bolt seal diameter since they don't make a 1410 12 bolt yoke.

Gave the driveshaft guy measurements Tuesday. I didn't get the invoice yesterday when I was supposed to, spoke to them this morning and was promised it by EOD today. After EOD, still don't have it and no call from them. Hopefully this is an anomaly and they don't do business like this, if you give me a deadline I expect it by that date, or clear communication if delays occur. Tomorrow is day 3 of waiting for the invoice, if I don't get it I will cancel the order and order from somewhere else. If it takes that long to send me an email, I doubt I'll see my driveshafts in under a month and I will not wait that long.

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You can see in the above photos that I don't have the rear plate welded onto the trac-bar axle mounts. The brackets sat at the same exact width of the U bolts, so I couldn't put them between the U bolts. I had to offset them, and if I weld the rear plate on I will not be able to install/remove the inner U bolt. I was gonna notch the corner to allow it to slip in and rotate up, but then it would pinch the brake line, and there's nowhere to move it without getting new lines and re-routing. Kinda surprised to see this from an ORD kit, there's no way I'm the only guy who ran into this problem.
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Drove fine around the block, taking it for a test drive to the gym in ~30min. Happy to FINALLY be (mostly) done with this build, this is gonna be the sweetest truck around
 
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