What is this? Bus/Baja hybrid rear suspension

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#1: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Wed Jan 19, 2011 08:49 PM
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I'll post up some pics when I can, but I'd appreciate any help, tips, and advice I can get in the mean time.

My wife and I purchased a "66" Baja project, almost completed, for our son. I didn't notice at the time but the rear suspension is AWESOME! Looks like a lot of thought went in, but I've got little clue to what it is.

Swingaxle, bus transmission, spring plates attached to axle tubes, bus reduction gear boxes, shocks mounted near the top of the reduction boxes, heim joint tie rod from new mount below the torsion tube and attaching to the bottom of the reduction gear boxes...





Any ideas where this came from? Does it work? Pit falls we should be aware of?

Has serious height but too easily travels in to scare positive camber territory.
Any help would be appreciated.

Turtle
Last edited by Turtle on Thu Mar 10, 2011 03:56 AM; edited 5 time in total

#2: What is this? Bus/Baja hybrid rear suspension Author: Dirtjunkie , Location: Looking for that tool I just set down. Post Posted: Thu Jan 20, 2011 02:34 AM
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I think we need a pic of that one to figure that out.

#3: Re: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Thu Jan 20, 2011 07:10 AM
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I've finally figured out what to google... vw baja reduction gear box. I was able to find several versions of the same theory. Not too many pro/cons yet though. I'll post pics this weekend.

#4: Re: What is this? Bus/Baja hybrid rear suspension Author: MojaveRacer208 , Location: Lake LA - SoCal Mojave Desert Post Posted: Thu Jan 20, 2011 08:42 AM
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Try this picture...

The yellow Baja bug has bus reduction swing axle suspension. A Baja Bug can't get much more fame than this cover. The car was built by Bill Savage, Chief of Tech for SCORE for 26 years. The radius rod on the bus reduction box is there to resist the rotation of the box which causes the rear of a Bus or a Bug with the reduction boxes to rise up under power. Baja Champion Johnny Johnson manufactured a kit for this setup in 2 styles. One had the reduction boxes in the normal orientation and had the radius rods under the axles. This results in a lift of about 3". The other style has the reduction boxes laid back horizontal in line with the spring plates.
This results in little to no lift, but extends the wheelbase about 3" also softening the ride slightly and extending the wheel travel a little.
The reduction gears cause a change in overall final drive ratio. They render a gearbox with stock Type 1 gear ratios into rockcrawling hero ratios.

#5: Re: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Thu Jan 20, 2011 05:41 PM
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That's the one! This describes perfectly the rear setup my son's Baja has. His is in the nearly upright position, the fill and drain plugs are not quite top and bottom. I do believe it's a bus transmission though delivering more drivable ratios, unless the 31x10.50 tires are the reason! I'll still post pics.

Any advice on care and feeding? Things that break? We are not putting money in it to change over to IRS at this time. He just wants to drive it when finished refurbishing everything that is in need.

#6: What is this? Bus/Baja hybrid rear suspension Author: MojaveRacer208 , Location: Lake LA - SoCal Mojave Desert Post Posted: Thu Jan 20, 2011 08:24 PM
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The Johnny Johnson kit for this was called "No-Hop"as it resisted the tendency for the rear end to push against the ground under power. It's described in the book. It is obviously a quite capable suspension setup, although it's quite out of date. That doesn't mean it's bad or doesn't work. There's a guy in SoCal Bajas who is rolling one of these setups and having a lot of fun. The ratios let the car climb very well and slow crawl too. This combined with the high clearance makes the setup good for showing up guys with builtup Jeeps. At the same time, as you can see from the book cover, it works plenty well for going fast as well. 31 x 10.50s work on this setup as do 33 x 10.50s. It IS still a swingaxle, and it IS still the same gearbox as a Type 1 swingaxle (except the ring gear is flipped over to the other side)...So don't expect it to live up to a turbo LS1 on nitrous. But it seems more rugged than a straight Type 1 swingaxle. It WAS intended for a truck rated at 1 Ton. Shocks (usually long KYB 5530 or similar long Bilstein) typically mount off the adapter between the reduction housing and the spring plate. Your car probably has that set up already. Multi shocks can easily be done depending on the upper mount fabrication.

#7: Re: What is this? Bus/Baja hybrid rear suspension Author: MojaveRacer208 , Location: Lake LA - SoCal Mojave Desert Post Posted: Thu Jan 20, 2011 08:36 PM
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Here's another thread on this forum about it...
www.azbaja.com/ForumsP...boxes.html

#8: What is this? Bus/Baja hybrid rear suspension Author: 69bapbaja , Location: Mesa,Az Post Posted: Sat Jan 22, 2011 05:43 AM
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yeah hit bugzylla up... he ran bus boxes for bug zyla... bad ass baja...(does he still have zylla?) finished ? or still un finished?

he even built the kits to mount them... (lookin out brother)

and no problem on the swing .. for a beginner just be easiy on the sandy corners...

#9: Re: What is this? Bus/Baja hybrid rear suspension Author: BugZyla.com , Location: Mexicopa County, Barackistan Post Posted: Sat Jan 22, 2011 02:43 PM
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[quote="69bapbaja"]yeah hit bugzylla up... he ran bus boxes for bug zyla... bad ass baja...(does he still have zylla?) finished ? [?quote]

Yes I still have it, just stitting for now until I have time wo finish it right. I drive the fasty baja now.

#10: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Thu Mar 10, 2011 03:58 AM
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Finally got the pictures posted up correctly. LOT of work has been put in since these were taken a month ago.

#11: Re: What is this? Bus/Baja hybrid rear suspension Author: MojaveRacer208 , Location: Lake LA - SoCal Mojave Desert Post Posted: Thu Mar 10, 2011 08:33 PM
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Turtle wrote:
Finally got the pictures posted up correctly. LOT of work has been put in since these were taken a month ago.

Link?

#12: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Thu May 05, 2011 10:22 PM
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Link to? Pics are above in the first post.

#13: Re: What is this? Bus/Baja hybrid rear suspension Author: Turtle , Location: Sacramento, CA Post Posted: Fri Dec 16, 2011 05:49 AM
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Are the pictures visible?



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