| Author |
Message |
I Ride Sand
Samba Member
Joined: June 07, 2012
Posts: 567
Location: utah
|
 Posted: Tue Jun 08, 2021 10:42 am Post subject: Axle selection for an odd use |
 |
|
So, I've been out of the VW stuff for a little while, moved over to suzuki stuff. I have a sweet little samurai with a VW TDI ALH motor swapped in. In the process of the swap, I had to move the engine, trans, doubler, and transfer case back about 2 inches. As is from factory, the rear driveshaft is pretty damn short. making it shorter and adding 8" of lift made it difficult to get it to work right. I'm currently using a standard toyota 4runner shaft thats been cut down. single u joint on either side. The Geometry is fine, but the speed variation of the shaft because of the extreme angle is causing torsional vibrations at highway speed. I've looked at running a double cardan joint at one end, but that makes the already short shaft too short. It wont work.
So, What about using some 930 non-plunging CV joints and a chromoly axle shaft? From what I'm reading the 930 non plunging joints are good to like 42* which is about what I need. They are also on the drive wheel in pretty powerful buggies, i'd be running them a bit faster but less load.
How can I handle the non-plunging part? is it fine to let the axle splines slip inside the star or will I need an external slip yoke? its going to need about 3-4 inches of plunge. I can make all the room in the world behind the CV when I build the adapter, thats a non-issue. I could pitch the pinion up enough to reduce the angle quite a bit, it would drop one to about 0 degrees at ride height and the other at about 20. Other than the springiness of the driveshaft, i don't forsee any major issues, and that type of CV has been used in many OEM driveshafts for years without issues, so why not? Anyone see any major issues?
_________________
Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to? |
|
| Back to top |
|
 |
cbeck
Samba Member
Joined: January 14, 2014
Posts: 2495
Location: high ridge, mo
|
| Posted: Wed Jun 09, 2021 4:37 am Post subject: Re: Axle selection for an odd use |
|
|
Little late, the crowd I run with would stretch the wheelbase. Could not find a pic of a friends sammi. Ls, powerglide, scs 3.8 splitter, air shocks, not coilovers, and 42's. The pg and the scs make for a much shorter driveline. Can the transfer case be clocked lower?
_________________
My cut in half and rebuild thread
www.thesamba.com/vw/forum/viewtopic.php?t=647779 |
|
| Back to top |
|
|
Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
|
| Posted: Wed Jun 09, 2021 6:41 am Post subject: Re: Axle selection for an odd use |
|
|
Quite a few locally, been looking for one to ELECTRIC POWER, sorry no help on drive line...
Dale
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
|
| Back to top |
|
|
I Ride Sand
Samba Member
Joined: June 07, 2012
Posts: 567
Location: utah
|
| Posted: Wed Jun 09, 2021 8:13 am Post subject: Re: Axle selection for an odd use |
|
|
| cbeck wrote: |
| Little late, the crowd I run with would stretch the wheelbase. Could not find a pic of a friends sammi. Ls, powerglide, scs 3.8 splitter, air shocks, not coilovers, and 42's. The pg and the scs make for a much shorter driveline. Can the transfer case be clocked lower? |
Naw, I'm not going to stretch the wheelbase. I don't have a place to do that at the moment. it would need to be linked, and tons of sheet metal work would be needed. This is also a semi-daily driver.
Clocking the t-case is possible, but its already the lowest point in the middle of the vehicle. the extra inch or two isn't worth it.
In the future its getting an ax15 with an atlas 2 or possibly an atlas 4. The 4 would be the preference. I'm just waiting to see just how fragile this drivetrain is going to be. In its final form it will be linked on toyota axles, the above drivetrain and possibly a BHW PD TDI with way, way too much power for any sane samurai driver. flexy, fast, and fun!
| Dale M. wrote: |
Quite a few locally, been looking for one to ELECTRIC POWER, sorry no help on drive line...
Dale
|
Heathen.
_________________
Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to? |
|
| Back to top |
|
|
Dale M.
Samba Member
Joined: April 12, 2006
Posts: 20379
Location: Just a tiny bit west of Yosemite Valley
|
| Posted: Wed Jun 09, 2021 8:37 am Post subject: Re: Axle selection for an odd use |
|
|
| I Ride Sand wrote: |
| cbeck wrote: |
| Little late, the crowd I run with would stretch the wheelbase. Could not find a pic of a friends sammi. Ls, powerglide, scs 3.8 splitter, air shocks, not coilovers, and 42's. The pg and the scs make for a much shorter driveline. Can the transfer case be clocked lower? |
Naw, I'm not going to stretch the wheelbase. I don't have a place to do that at the moment. it would need to be linked, and tons of sheet metal work would be needed. This is also a semi-daily driver.
Clocking the t-case is possible, but its already the lowest point in the middle of the vehicle. the extra inch or two isn't worth it.
In the future its getting an ax15 with an atlas 2 or possibly an atlas 4. The 4 would be the preference. I'm just waiting to see just how fragile this drivetrain is going to be. In its final form it will be linked on toyota axles, the above drivetrain and possibly a BHW PD TDI with way, way too much power for any sane samurai driver. flexy, fast, and fun!
| Dale M. wrote: |
Quite a few locally, been looking for one to ELECTRIC POWER, sorry no help on drive line...
Dale
|
Heathen. |
It the future man.... What are you going to do when you can no longer afford gas....
_________________
“Fear The Government That Wants To Take Your Guns" - Thomas Jefferson.
"Kellison Sand Piper Roadster" For Street & Show.
"Joe Pody Sandrover" Buggy with 2180 for Autocross (Sold)
============================================================
All suggestions and advice are purely my own opinion. You are free to ignore them if you wish ... |
|
| Back to top |
|
|
I Ride Sand
Samba Member
Joined: June 07, 2012
Posts: 567
Location: utah
|
| Posted: Wed Jun 09, 2021 1:05 pm Post subject: Re: Axle selection for an odd use |
|
|
| Dale M. wrote: |
It the future man.... What are you going to do when you can no longer afford gas.... |
Mines a mechanical diesel. As long as fast food uses cooking oil, I can get fuel one way or another  I don't see McDonalds going out of business any time soon!
_________________
Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to? |
|
| Back to top |
|
|
cbeck
Samba Member
Joined: January 14, 2014
Posts: 2495
Location: high ridge, mo
|
| Posted: Wed Jun 09, 2021 5:29 pm Post subject: Re: Axle selection for an odd use |
|
|
Save yourself some money. Skip the rockwells and go straight to the planetaries
My 86 fourunner rear has stood up to the four banger, marlin crawler, and 5.29 detroit locker. The front ifs, not so much. Got the trailgear kit and hung a yota solid front axle. Probably a waste of money considering the 5.3 ls I haven't got running yet. People think dana 60's are gold plated, still waiting for some superduty axles to fall from the sky.
You thinking about using a traditional size vw shaft with those cv's? Seems a little small.
_________________
My cut in half and rebuild thread
www.thesamba.com/vw/forum/viewtopic.php?t=647779 |
|
| Back to top |
|
|
I Ride Sand
Samba Member
Joined: June 07, 2012
Posts: 567
Location: utah
|
| Posted: Wed Jun 09, 2021 8:42 pm Post subject: Re: Axle selection for an odd use |
|
|
| cbeck wrote: |
You thinking about using a traditional size vw shaft with those cv's? Seems a little small. |
No, I'm wanting to use 930s and a 28 spline chromo axle for the driveshaft. The axleshafts themselves are 26 spline units. even with the stock 3.73 gears I bet it will break a shaft before it breaks a cv on the driveline.
Anyway. we're getting a bit off topic here. Can I let the splines of the axle/driveshft slip through the star of the 930 non-plunging CV to get plunge?
_________________
Just a dirty coyote playing in the desert.
now where'd that dirty badger run off to? |
|
| Back to top |
|
|
dustymojave
Samba Member
Joined: January 07, 2007
Posts: 5802
Location: Lake LA, Mojave Desert, SoCal
|
| Posted: Mon Jun 14, 2021 5:28 pm Post subject: Re: Axle selection for an odd use |
|
|
That's how it's done on VW-based offroad buggies. The shafts have long spline sections to slip inside the star. Stock VW CV shafts are restricted from slipping inside the star. I far prefer the racer's way of doing it over stock.
_________________
Richard
Offroading VW based cars since 1965
Tech Inspection 1963 - 2012 SCCA/SCORE/HDRA/MORE/MDR +
Retired from building Bajas, Fiberglass Buggies and Rails in the Mojave Desert. Also Sprints & Midgets, Dry Lakes, Road Race cars. All types New and Vintage
SoCalBajas Member
Kicked Cancer's A$$...1st and 2nd round...Fight ain't over yet. |
|
| Back to top |
|
|
|
