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Dystred Tracks

Dystred Tracks

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scotia
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While browsing through ebay listings I came across a rubber tired 988 with "Dystred" cushion tracked loader around the tires. I also came across this other website after searching the web for "Dystred".

http://cgi.ebay.com/Caterpillar-CAT-dystred-988-track-loader-brochure_W0QQitemZ350299404968QQcmdZViewItemQQptZLH_DefaultDomain_0?hash=item518f78baa8

http://forums.dhsdiecast.com/default.aspx?g=posts&m=1071343

Has any one had any experience or been around any of these. How common were they?
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Sun, Jan 3, 2010 5:47 AM
edb
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Hi scotia,
We had one only here in Melbourne Australia and it was high maintainance. The treads were taken off after a couple of years and retro fitted with the standard wheels and tyres with the chains normally seen on quarry machines.
I think there were others in OZ but I was not involved with them at the Dealer.
We had one bloke who went to a Cat School on them and he traveled about the country and Pacific Islands for a while with his big box full of kit to repair the carcases and chains. The kit soon stayed in storage and was still there when I retired in 2004.
There were some nasty smelling glues and compounds in that kit.
I think that the side walls were vulnerable was the main problem if I recall.
Also that the chains wore and became loose on the carcase allowing rocks in to do their worst.
Cheers,
Eddie B.
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Sun, Jan 3, 2010 7:20 AM
7upuller
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Reply to edb:
Hi scotia,
We had one only here in Melbourne Australia and it was high maintainance. The treads were taken off after a couple of years and retro fitted with the standard wheels and tyres with the chains normally seen on quarry machines.
I think there were others in OZ but I was not involved with them at the Dealer.
We had one bloke who went to a Cat School on them and he traveled about the country and Pacific Islands for a while with his big box full of kit to repair the carcases and chains. The kit soon stayed in storage and was still there when I retired in 2004.
There were some nasty smelling glues and compounds in that kit.
I think that the side walls were vulnerable was the main problem if I recall.
Also that the chains wore and became loose on the carcase allowing rocks in to do their worst.
Cheers,
Eddie B.
There was a loader in a local Quarry that had them on. Only lasted a year or so. Sidewall damage killed the tires, so they changed them out.-glen
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Sun, Jan 3, 2010 9:33 AM
bob
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Reply to 7upuller:
There was a loader in a local Quarry that had them on. Only lasted a year or so. Sidewall damage killed the tires, so they changed them out.-glen
We had some here aswell but like Eddie says for a short time.
Later Bob
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Sun, Jan 3, 2010 9:53 AM
rusted
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Reply to bob:
We had some here aswell but like Eddie says for a short time.
Later Bob
I ran this brand new 988A in Oz in '72 with the Dystred tracks, it was destined for a hard rock job and the Dystred being new they tried it in one of the local pits for a few weeks first. I had no trouble with it that I can recall, but do remember hearing of problems after it got a few hours up in the rock with the tyres slipping inside the tracks.
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Sun, Jan 3, 2010 11:35 AM
rusted
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Reply to bob:
We had some here aswell but like Eddie says for a short time.
Later Bob
I ran this brand new 988A in Oz in '72 with the Dystred tracks, it was destined for a hard rock job and the Dystred being new they tried it in one of the local pits for a few weeks first. I had no trouble with it that I can recall, but do remember hearing of problems after it got a few hours up in the rock with the tyres slipping inside the tracks. It was the only one I ever saw.
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Sun, Jan 3, 2010 11:57 AM
bruce oz
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Reply to bob:
We had some here aswell but like Eddie says for a short time.
Later Bob
hello scotia , i have different brochure from cat named -steel shoe beadless tires,no pic that are worth posting ,

i did read some were awhile ago though the tires shortage that was on in the last few yrs that they were making a tire like inside of the Dystred tires with a capped tread tries that fits over it ,cheap to make with only replacing the tread when it was worn ,not sure how the went ,bruce oz
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Sun, Jan 3, 2010 11:58 AM
Gavin84w
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Reply to bruce oz:
hello scotia , i have different brochure from cat named -steel shoe beadless tires,no pic that are worth posting ,

i did read some were awhile ago though the tires shortage that was on in the last few yrs that they were making a tire like inside of the Dystred tires with a capped tread tries that fits over it ,cheap to make with only replacing the tread when it was worn ,not sure how the went ,bruce oz
I remember seeing quite a few Beadless Tyre equipped loaders in NSW Australia as a kid in the late 70,s early 80,s while going to sites with my dad who worked for Bridgestone. Never saw the Dystred version which differed a bit from the beadless tyre, think there was also a Goodyear tie up in the beadless tyre era too that could have ended up in court due to patent infringements if i remember correctly.

There was 2 fleets of 992B loaders at Woodlawn and Woodsreef mines and then various 992C that i saw aswell from Leightons Contractors, Whites and Cleary Bros. I think 1 of the Leighton machines was also a 50/50 deal with regular tyres on the rear.

In 2008 i attended a training course which had a session in it dedicated to the release of the upcoming 992K/993K loaders and was hosted by Randy Aneloski from the wheel loader group, Randy has been with Cat a while and i put the question to him that inlight of the tyre shortages around that time would Caterpillar entertain looking at the beadless tyre again, the answer was met with about 10 seconds of silence, then a chuckle and wry grin came over his face and he responded that Caterpillar would not be looking at doing the beadless tyre again, he then went on to say how the hell do you know about those things, your to young!!! I think him and i may have been the only ones in the room that even knew what beadless tyres were!!!
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Sun, Jan 3, 2010 6:59 PM
OzDozer
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Reply to Gavin84w:
I remember seeing quite a few Beadless Tyre equipped loaders in NSW Australia as a kid in the late 70,s early 80,s while going to sites with my dad who worked for Bridgestone. Never saw the Dystred version which differed a bit from the beadless tyre, think there was also a Goodyear tie up in the beadless tyre era too that could have ended up in court due to patent infringements if i remember correctly.

There was 2 fleets of 992B loaders at Woodlawn and Woodsreef mines and then various 992C that i saw aswell from Leightons Contractors, Whites and Cleary Bros. I think 1 of the Leighton machines was also a 50/50 deal with regular tyres on the rear.

In 2008 i attended a training course which had a session in it dedicated to the release of the upcoming 992K/993K loaders and was hosted by Randy Aneloski from the wheel loader group, Randy has been with Cat a while and i put the question to him that inlight of the tyre shortages around that time would Caterpillar entertain looking at the beadless tyre again, the answer was met with about 10 seconds of silence, then a chuckle and wry grin came over his face and he responded that Caterpillar would not be looking at doing the beadless tyre again, he then went on to say how the hell do you know about those things, your to young!!! I think him and i may have been the only ones in the room that even knew what beadless tyres were!!!
I recall seeing the Beadless tires advertised and touted by Cat as the answer to tire problems in rock, in the late 1960's/early 1970's. However, I never saw any actually in work, in any Western Australian mine .. surface, or underground.

I think there were two factors at play here .. the Beadless tires were a horrendous price .. and Rud chains with L-5 tires were quite a satisfactory solution, and a whole lot cheaper.

I seem to recall mention, later, when the Beadless tires never appeared .. that they had problems with the shoe bolts coming loose .. problems with rocks falling against the sidewall, and puncturing the wall .. and problems with the bars that the shoes bolted to, breaking out of the tire carcass.

The Beadless tires used a large diameter cable in the tire carcass, spiralled around and around .. instead of a radial or cross-ply weave .. very unlike a normal tire. I've seen sets of Beadless tires for sale on private websites and dealer websites, and there weren't many takers.

I never figured what happened for Beadless tires to become Dystred tires? Was there a redesign after the lawsuit? .. and if there was a redesign, what was the difference in the design?

EDIT - O.K. .. now I got it. It appears that Dystred was Petersons original idea .. and when Cat bought the idea, it was later redesigned into the Beadless design, whereby the "links" or bars were incorporated into the tire carcass.

http://www.petersonholding.com/about/bead.less_tire.htm

http://books.google.com/books?id=vv0bQHZGebcC&pg=PA238&lpg=PA238&dq=beadless+tire&source=bl&ots=H82fgqVgPk&sig=QUjN-TyuUSixuUA-SCZlFVK89J4&hl=en&ei=0olBS7COO9GGkAWupqWzCA&sa=X&oi=book_result&ct=result&resnum=8&ved=0CB8Q6AEwBw#v=onepage&q=beadless%20tire&f=false
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Mon, Jan 4, 2010 1:18 PM
Gavin84w
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Reply to OzDozer:
I recall seeing the Beadless tires advertised and touted by Cat as the answer to tire problems in rock, in the late 1960's/early 1970's. However, I never saw any actually in work, in any Western Australian mine .. surface, or underground.

I think there were two factors at play here .. the Beadless tires were a horrendous price .. and Rud chains with L-5 tires were quite a satisfactory solution, and a whole lot cheaper.

I seem to recall mention, later, when the Beadless tires never appeared .. that they had problems with the shoe bolts coming loose .. problems with rocks falling against the sidewall, and puncturing the wall .. and problems with the bars that the shoes bolted to, breaking out of the tire carcass.

The Beadless tires used a large diameter cable in the tire carcass, spiralled around and around .. instead of a radial or cross-ply weave .. very unlike a normal tire. I've seen sets of Beadless tires for sale on private websites and dealer websites, and there weren't many takers.

I never figured what happened for Beadless tires to become Dystred tires? Was there a redesign after the lawsuit? .. and if there was a redesign, what was the difference in the design?

EDIT - O.K. .. now I got it. It appears that Dystred was Petersons original idea .. and when Cat bought the idea, it was later redesigned into the Beadless design, whereby the "links" or bars were incorporated into the tire carcass.

http://www.petersonholding.com/about/bead.less_tire.htm

http://books.google.com/books?id=vv0bQHZGebcC&pg=PA238&lpg=PA238&dq=beadless+tire&source=bl&ots=H82fgqVgPk&sig=QUjN-TyuUSixuUA-SCZlFVK89J4&hl=en&ei=0olBS7COO9GGkAWupqWzCA&sa=X&oi=book_result&ct=result&resnum=8&ved=0CB8Q6AEwBw#v=onepage&q=beadless%20tire&f=false
Yep Oz the Dystred came first, then the beadless tyres. They were quite different in design whereby the dystred effectively was a tire with beads on the std final drive with a flange on the inside and a flange, bead seat band and lock ring on the outside.

The beadless as the name implies used a 2 piece rim then the carcass and then this had a large band around it that the grousers bolted onto. There was various forms of sidewall protection available from Cat.

I am sure Leightons had them on 992C,s at Burrup in the early 80,s. I will have to take a look at the vid of that job i have.

Have to say i am a fan of them and they certainly gave the loader a unique look, i think possibly they were not used as intended in some cases and Cats marketing probably talked them up way more than they perhaps were.

I think there is a picture in Eric Orlemanns Caterpillar Century book of a 992B with full sound suppression package and beadless tyres and it just looks like it means business, maybe an ACMOC diecast for the future!!
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Mon, Jan 4, 2010 4:20 PM
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