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"Near enough" ratio for a SAS #1012629 11/11/10 10:21 AM
Joined: Feb 2003
Posts: 2,243
DamKia Offline OP
Kia Moderator
http://cars.ebay.com.au/ASHCROFT-4-11-4-...emZ190385281130

Rover front may be worth a look with aftermarket 4.75:1 ratio. Axle assy can be had in about 60" width.

The difference between that and our 4.778 is about 0.6%, basically negligible (ie, on a 30 inch tire about 0.2 inches = not much more than "loading difference" or tire wear) There would be no handling issues associated with the front going marginally faster than the rear on dirt.

Looking at doing a subframe that bolts to the existing upper/lower mounts to mount the spring/shock and Panhard and using the Rover leading arms, or possibly use the existing spring rotated 90 degrees and taken down to the lower part of custom made leading arms utilising leverage for a bit more travel. Chassis end of leading arms would come from a box welded to bottom or side of the chassis.


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
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Re: "Near enough" ratio for a SAS [Re: DamKia] #1012630 11/11/10 01:16 PM
Joined: Feb 2009
Posts: 146
Dryver Offline
Wheeler
Quote
The difference between that and our 4.778 is about 0.6%, basically negligible (ie, on a 30 inch tire about 0.2 inches = not much more than "loading difference" or tire wear) There would be no handling issues associated with the front going marginally faster than the rear on dirt.


Actually, the driving distance is about 0.55" (30" x 3.1415 x .58%), or 3.9 more revoutions of the front tires per mile compared to the rear tires. Still probably reasonable on a loose packed surface. I don't think you would want to run this setup on a hard packed or paved surface, though.


01 Convertible; Electric Fan; 3" Up Your Kia lift spacers; Tj 104's; 31x10.5x15's on Centerlines; Rear LSD.
GONE, all I have left are a few spare parts and the wheels.
Re: "Near enough" ratio for a SAS [Re: Dryver] #1012631 11/11/10 02:37 PM
Joined: Feb 2003
Posts: 2,243
DamKia Offline OP
Kia Moderator
Quote
Quote
The difference between that and our 4.778 is about 0.6%, basically negligible (ie, on a 30 inch tire about 0.2 inches = not much more than "loading difference" or tire wear) There would be no handling issues associated with the front going marginally faster than the rear on dirt.


Actually, the driving distance is about 0.55" (30" x 3.1415 x .58%), or 3.9 more revoutions of the front tires per mile compared to the rear tires. Still probably reasonable on a loose packed surface. I don't think you would want to run this setup on a hard packed or paved surface, though.


Given that we don;t have a center differential in our Tcase we shouldn't be running 4WD on hard/dry/"sticky" surfaces anyway. My point was that on dirt it won't make the vehicle unstable or undrivable.


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
Re: "Near enough" ratio for a SAS [Re: DamKia] #1012632 11/11/10 04:35 PM
Joined: Aug 2006
Posts: 598
DEFBOY35 Offline
Rock Warrior
my question is if going through all the effort to do the sas, why would you want to have stock gearing? even with 31's the stock gearing is making power suffer.
that being said, the amount of work a sas is, is it worth it if you only plan on stuffing 30 or 31 inch tires under there?
if it is only because you dont want to change the rear axle, i would say the rear axle is the easy part.
either way a cool project none the less.


2000 SPORTY, DEF BOY customs, mmm....lockers, mmm... gears, mmm... double transfer case, mmm... stroker
http://www.cardomain.com/ride/2377991
Re: "Near enough" ratio for a SAS [Re: DEFBOY35] #1012633 11/12/10 01:16 AM
Joined: Feb 2003
Posts: 2,243
DamKia Offline OP
Kia Moderator
Looking to do more of a "bolt-on" solution rather than getting too involved with chassis welding. Easier to pass our safety inspections.

The gearing is a fair question, but not having to change both ends will make it easier and cheaper to do.


2002 Sporty , Ironman 2.5" spring, 2" body, 15 x 7 ROH wheels, K&N, 15 x 10.5 Simex Centipedes, Powerchip 91.

"Never argue with an idiot. They will bring you down to their level then beat you with experience!"
Re: "Near enough" ratio for a SAS [Re: DamKia] #1012634 11/12/10 02:14 AM
Joined: Oct 2010
Posts: 23
jfrey123 Offline
Need a Spot
Quote
Looking to do more of a "bolt-on" solution rather than getting too involved with chassis welding. Easier to pass our safety inspections.

The gearing is a fair question, but not having to change both ends will make it easier and cheaper to do.



I had similar concerns when I was debating a SAS. I knew that the Sorento gearing in the rear wouldn't match up with other front axles so it was either switch front and rear or switch nothing for me.

So far, I'm choosing nothing. We'll see how long that lasts.


2005 Kia Sorento LX - 3.5L with 5 speed manual
2" Daystar spring spacer lift - 265/75R16 BFG's fitted
Custom front bumper with hitch mount, sliders, engine skid.
Re: "Near enough" ratio for a SAS [Re: jfrey123] #1012635 11/12/10 07:11 AM
Joined: Jul 2007
Posts: 387
4
4runnernomore Offline
Mudrunner
HiDAMKIA

Have you considered the wide axle hilux/4runner axle options.

Here is a link to what I was going to to my sporty with my old 4runner axles.http://www.4x4wire.com/forums/favlinker.php?Cat=0&Entry=24267&F_Board=UBB70&Thread=1029160&partnumber=&postmarker=

Gearing at 5.29 running 32's I worked out to be around the same as running 30's on the Sporties standard gearing. I kick myself now for selling the diffs when I bought the 80 series. I am now selling the 80 and keeping the Sporty.

Cheers, Chris


97 Sporty, snorkel, K&N filter,chipped, ext forks, 40mm Dob Springs, KYB struts, 35mm Jeep TJ Springs, RAV 4 OME shocks, Kaiser Locker 5.38 R&P's, 1&3/8 body lift, 245/75 R16 D674's Sports steering wheel, bullbar, extractors & 2 1/4 exhaust engineered.

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