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Old 03-14-2015, 01:35 PM   #1
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Help me find who created this conversion

1985 Slipstream Cobi, built in Canada.
Made from 70s sovereign
Gm chassis
Perkins diesel
Allison trans
4x4 in rear

Simply looking for any info at all about this rig. Does anyone else have one? Apparently there were 8 built. Mine is currently in restoration and I've got some questions!
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Old 03-14-2015, 02:13 PM   #2
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P30 chassis with a tag axle?
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Old 03-14-2015, 02:25 PM   #3
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I believe so. Or whatever the gmc motorhome was built on. It seems to be modelled after those.


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Old 03-16-2015, 11:29 PM   #4
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Looks to me like they married a front wheel drive GMC or Revcon motorhome to an Airstream trailer.
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Old 03-17-2015, 04:19 AM   #5
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Well thats weird. I didnt start the thread, I was responding to someone asking about a unique looking motorhome.
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Old 03-17-2015, 06:00 AM   #6
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Originally Posted by mayco View Post
Well thats weird. I didnt start the thread, I was responding to someone asking about a unique looking motorhome.
It was not something you did. We were doing some housekeeping and it looks like someone was posting while the work was being performed, causing a split. Thread re-joined.
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Old 03-17-2015, 07:57 AM   #7
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Is the motorhome front wheel drive?
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Old 03-17-2015, 08:46 AM   #8
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The original post called out a Perkins diesel, Allison tranny, and 4X4 rear.

If that's correct then it's not a GMC, not a front wheel drive, and doesn't have a tag axle.
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Old 03-17-2015, 10:48 AM   #9
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It is a "t
I guess a "tag" axle is different from a "tandem"- maybe the tag has no drive wheels, just carries weight- the "4x4" both axles are driving? Like a "twin screw" tractor?
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Old 03-17-2015, 11:09 AM   #10
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Very interesting sounding running gear in your distinctive Moho.
Somewhat train like front end design. Does the grill open for cooling?
May be a custom rear end also. Do any airstream trailers peak out at the belt line like that?
Have you had a chance to drive it? If so how was it? Nice highway cruiser?

Sorry not much to share other than couriosity and interest, keep us posted on what you uncover.

Nice rig.

Cheers Richard
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Old 03-17-2015, 11:15 AM   #11
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Quote:
Originally Posted by m.hony View Post
It is a "t
I guess a "tag" axle is different from a "tandem"- maybe the tag has no drive wheels, just carries weight- the "4x4" both axles are driving? Like a "twin screw" tractor?
I would say a tag axle is a type of tandem axle design, but specifically with one axle not driven versus both axles driven (as in a "twin screw" tractor).

To add to this, one past post (linked below, post #6) made reference to a Slipstream motorhome having a belt driven axle as well (6x6). Don't know if that was wishful thinking or an observation. If it referred to a belt driven tag axle, that would be the "4x4 rear". If it is a belt driven front axle (?) that would be the 6x6. It may be another link for the OP to follow up.

http://www.airforums.com/forums/f311...tml#post994749

Jeff
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Old 03-17-2015, 11:54 AM   #12
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Reading it again, it sounds like they may have used a Silent Drive adapted to drive the tag axle and that is why it was referred to as 6x6, duals on the front axle and a single wheel on each side on the (now driven) tag axle.
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Old 03-18-2015, 02:38 AM   #13
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Wow!

Reports of another in Quebec? Now we're talking. I'd love to see those pictures.

To answer a few questions, yes it's definitely rear wheel drive. The 4x4 is engaged by way of a cable system located on the dashboard. You just turn them to unlock, then pull them out as far as they'll go and the belt cinches down and starts turning the tag wheels. So really I guess it's more of an assist. But handy if you're on the beach or in some mud.

Yes I certainly have driven it. I drove it from Vancouver to my home in the Okanagan valley where it's undergoing a tear down. It'll soon hit the road again, back to van to have an industrial catering kitchen installed. It's the first motorhome of this size that I've driven. It was bouncy. It doesn't go very fast up a hill, and it tops out around 110 kph on flat road. It's strongest game is in stopping. Six discs get it stopped in what I felt was no time compared to the way the rest of the ride felt. To sum up, it was terrifying to drive and I love it.

To the grill question, it does have a maintenance hatch on the front there above the grill but I'm not sure you'd open it to achieve more cooling. Behind it though is a huge radiator. It has to be like 3x2 or something. I never detected any high temps going up and over Allison pass on the crowsnest highway.

Thanks to everyone for your interest! I can post some more pictures if anyone is curious.




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Old 03-18-2015, 04:38 AM   #14
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Would love to see more pictures.
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