| rack and pinion steering [message #234097] |
Fri, 27 December 2013 05:38  |
cadelec
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
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Senior Member |
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My GMC should arrive here in OZ in a week or two and
I am researching ways to convert to Right hand drive
rob has shown me his setup which will probably be the way i go.
but i was wondering if anyone had tried a rack and pinion conversion
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
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| Re: [GMCnet] rack and pinion steering [message #234100 is a reply to message #234097] |
Fri, 27 December 2013 07:13  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Trevor,
Just off the top of my head, I'd say substituting R&P would be much more
difficult than moving the steering box.
First off, to avoid changing too many suspension components, you'd want the
assembly to directly replace the cross-frame tie rod (the proper
nomenclature for which I don't recall). The passageway between the main
crossmember and the oil pan is probably too tight to allow the rack to pass.
Even if you overcome "First", you'll find that the Pinion (where the
steering column attaches to the R&P assembly) will be well aft of the
current steering box location. Thus, there will have to be some sort of
complex linkage or the steering column will be approximately vertical --
making it a bit difficult to get in and out of the driver's seat.
With those figured out (or probably as a better "First"), you'll have to
find a R&P assembly long enough for the GMC -- just changing the "end arms"
would probably not be beneficial to the steering geometry. :-)
That's probably not the best project for which to reinvent the wheel --
copy your mates' designs. Just because Bobby Moore could never do anything
like anyone else doesn't mean you MUST continue his tradition. :-)
JMHO,
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL
www.gmcwipersetc.com
On Fri, Dec 27, 2013 at 6:38 AM, Trevor Pordage <trevor@cadelec.com.au>wrote:
>
>
> My GMC should arrive here in OZ in a week or two and
> I am researching ways to convert to Right hand drive
> rob has shown me his setup which will probably be the way i go.
> but i was wondering if anyone had tried a rack and pinion conversion
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: rack and pinion steering [message #234107 is a reply to message #234097] |
Fri, 27 December 2013 08:05 |
peter bailey
Messages: 367
Registered: March 2009
Location: Gawler, South Australia
Karma: 0
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Senior Member |
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Trevor,
You need to find Ian Kunik he moved to Queensland recently and he converted his GMC 23' coach himself. He has sold the coach and it resides some where north of Sydney. He used the original steering box (as is the same in my coach) and I know the only part he purchased for the actual steering conversion was a bolt for the idler arm. The rest of the conversion to the inside was all mirror copy and done by him. The only other cost I believe was the engineers report all up actual money spent was under $1000 that is WOW! He was going to do a detailed step by step write up for me of the conversion but I had lost contact with him before I got it so I am not holding out on seeing it, but you never know.
What are you going to do re the location of the door to meet the Australian requirement?
Peter Bailey
fromOzy (Aussie)
[Updated on: Fri, 27 December 2013 08:09] Report message to a moderator |
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| Re: rack and pinion steering [message #234123 is a reply to message #234107] |
Fri, 27 December 2013 11:25 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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Rack and pinion is a really col idea.
I built a R&P for my '69 corvette before there were any kits using a Grand AM rack. It works fantastic, so much better than the piece of junk that was in there
but I wonder if there are any trucks that use a front steer rack with the input pointing towards the front.
Or if R&P is even a good idea on a heavy vehicle...
Hmmmm
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] rack and pinion steering [message #234181 is a reply to message #234100] |
Fri, 27 December 2013 18:32 |
cadelec
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
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Senior Member |
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from research i have done this R&P idea looks too difficult
the main problem i can see is getting the steering linkage to connect with the rack .
as i dont have the coach here yet i cannot look at it and make decissions
i just thought that maybe someone had already gone thru the motions .
| Ken Henderson wrote on Fri, 27 December 2013 07:13 |
Trevor,
Just off the top of my head, I'd say substituting R&P would be much more
difficult than moving the steering box.
First off, to avoid changing too many suspension components, you'd want the
assembly to directly replace the cross-frame tie rod (the proper
nomenclature for which I don't recall). The passageway between the main
crossmember and the oil pan is probably too tight to allow the rack to pass.
Even if you overcome "First", you'll find that the Pinion (where the
steering column attaches to the R&P assembly) will be well aft of the
current steering box location. Thus, there will have to be some sort of
complex linkage or the steering column will be approximately vertical --
making it a bit difficult to get in and out of the driver's seat.
With those figured out (or probably as a better "First"), you'll have to
find a R&P assembly long enough for the GMC -- just changing the "end arms"
would probably not be beneficial to the steering geometry. 
That's probably not the best project for which to reinvent the wheel --
copy your mates' designs. Just because Bobby Moore could never do anything
like anyone else doesn't mean you MUST continue his tradition.
JMHO,
Ken H.
Americus, GA
'76 X-Birchaven w/Cad500/Howell EFI & EBL
www.gmcwipersetc.com
On Fri, Dec 27, 2013 at 6:38 AM, Trevor Pordage <trevor@cadelec.com.au>wrote:
>
>
> My GMC should arrive here in OZ in a week or two and
> I am researching ways to convert to Right hand drive
> rob has shown me his setup which will probably be the way i go.
> but i was wondering if anyone had tried a rack and pinion conversion
> --
> Trevor
> Brisbane Australia
> Siesta Koala 76 Edgemont (old Bobby Moores)
> 71 Cadillac Eldo Convert
> 58 Cadillac Eldorado Brougham Project
>
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Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
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| Re: rack and pinion steering [message #234186 is a reply to message #234107] |
Fri, 27 December 2013 19:13 |
cadelec
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
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Senior Member |
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thanks peter
i have rung the only Kunik in the white pages and they believe they are the only ones in australia could the spelling be wrong.
do you have any other leads to his whereabouts
as for the door we are undecided yet and will make the decision when we get the coach here and have a good look at her.
but at this stage our options are
1/ remove the tub seat behind the existing driver and put in a smaller door (the regulations state the door must allow a normal size person to easily enter or exit the living cabin ETC.
see item 4.7 in link below
www.support.transport.qld.gov.au/qt/formsdat.nsf/forms/QF4550/$file/F4550_ES.pdf
we will have to discuss this with an engineer
if we do this we will leave the existing door where it is
2/ swap the kitchen and table one side to the other. if we do this we will have to loose the fold down dinette and make a L shaped lounge / table as we have dry side bath which finishes more forward of the existing door frame
if we do this we will take the existing door and swap to the other side
| peter bailey wrote on Fri, 27 December 2013 08:05 |
Trevor,
You need to find Ian Kunik he moved to Queensland recently and he converted his GMC 23' coach himself. He has sold the coach and it resides some where north of Sydney. He used the original steering box (as is the same in my coach) and I know the only part he purchased for the actual steering conversion was a bolt for the idler arm. The rest of the conversion to the inside was all mirror copy and done by him. The only other cost I believe was the engineers report all up actual money spent was under $1000 that is WOW! He was going to do a detailed step by step write up for me of the conversion but I had lost contact with him before I got it so I am not holding out on seeing it, but you never know.
What are you going to do re the location of the door to meet the Australian requirement?
Peter Bailey
fromOzy (Aussie)
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Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
|
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| Re: [GMCnet] rack and pinion steering [message #234215 is a reply to message #234181] |
Fri, 27 December 2013 22:27 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Trevor,
I was under my coach this afternoon. I think I underestimated the
difficulty of incorporating R&P. :-)
Ken H.
On Fri, Dec 27, 2013 at 7:32 PM, Trevor Pordage <trevor@cadelec.com.au>wrote:
>
>
>
> from research i have done this R&P idea looks too difficult
> the main problem i can see is getting the steering linkage to connect with
> the rack .
> as i dont have the coach here yet i cannot look at it and make decissions
> i just thought that maybe someone had already gone thru the motions .
...
>
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: rack and pinion steering [message #234287 is a reply to message #234097] |
Sat, 28 December 2013 16:55 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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Is it possible to use a steering box from a truck made in Australia and just extend the steering link over to the original location?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] rack and pinion steering [message #234299 is a reply to message #234294] |
Sat, 28 December 2013 18:56 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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| Robert Mueller wrote on Sat, 28 December 2013 17:45 |
...Here's the photos the show how The Blue Streak was converted to RHD; ...
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That looks pretty straight forward. Am I missing something that makes this complicated?
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] rack and pinion steering [message #234310 is a reply to message #234299] |
Sat, 28 December 2013 20:23 |
cadelec
Messages: 303
Registered: September 2011
Location: Brisbane Australia
Karma: 1
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Senior Member |
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kerry i thisnk the steering linkage and box part will be relatively straight forward . all the worry to get it registered here will be in changing the dash, the air conditioning. the current passenger wiper will have to be changed to pivot from the outside , park brake actuator (whioh does not currently exist), pedals and foot well, retractable lap sash seat belts, steering column, entry door on other side
| Kerry Pinkerton wrote on Sat, 28 December 2013 18:56 |
| Robert Mueller wrote on Sat, 28 December 2013 17:45 |
...Here's the photos the show how The Blue Streak was converted to RHD; ...
|
That looks pretty straight forward. Am I missing something that makes this complicated?
|
Trevor
Brisbane Australia
Siesta Koala 76 Edgemont (old Bobby Moores)
71 Cadillac Eldo Convert
58 Cadillac Eldorado Brougham Project
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