Home » Public Forums » GMCnet » [GMCnet] Wheel Spacers
| [GMCnet] Wheel Spacers [message #168158] |
Tue, 01 May 2012 10:12  |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Thanks to the folks who have explained that the offset
of various wheels is given in WHOLE millimeters. It
is now obvious that my "plan" to use the -134 (mm)
KMD Rock Star wheels as the drive wheels in an attempt
to equalize front and rear track is ill-conceived. I
had thought that the offset measurement "must" be in
tenths of millimeters (-13.4 and +11.1 mm). That would
have been a difference of only 24.5mm or just under
one inch for each side. My bad!
I will have to use the same +111 (mm) offset wheels
front and rear.
Therefore, I'd like to know size and source(s) for the
wheel spacers to move the drive wheels out to do this.
I think I'll order the second pair or rear wheels today.
I am undecided whether to install the "star" hubcaps or
leave them off. They were installed by Discount Tire on
the first pair of rears, but extend the possible contact
point about 1.5 inches beyond the wheel, but perhaps
only .5 inches beyond the lugnuts. Maybe not enough to
really worry about. Shan Rose bought the "black" wheels
but I went with the chrome finish. Shan showed pics both
with and without the "star" hubcaps. I'll have them leave
off the hubcaps on the wheels to install later this week
and see which way I want to go from that point.
T.I.A.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
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| Re: [GMCnet] Wheel Spacers [message #168159 is a reply to message #168158] |
Tue, 01 May 2012 10:26  |
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Not sure what offset you need, Mac, but I have a set of 2"
spacers that are excess to my needs (I now have the 1 ton
front end).
On 5/1/2012 8:12 AM, D C *Mac* Macdonald wrote:
> Thanks to the folks who have explained that the offset
> of various wheels is given in WHOLE millimeters. It
> is now obvious that my "plan" to use the -134 (mm)
> KMD Rock Star wheels as the drive wheels in an attempt
> to equalize front and rear track is ill-conceived. I
> had thought that the offset measurement "must" be in
> tenths of millimeters (-13.4 and +11.1 mm). That would
> have been a difference of only 24.5mm or just under
> one inch for each side. My bad!
>
> I will have to use the same +111 (mm) offset wheels
> front and rear.
>
> Therefore, I'd like to know size and source(s) for the
> wheel spacers to move the drive wheels out to do this.
>
> I think I'll order the second pair or rear wheels today.
>
> I am undecided whether to install the "star" hubcaps or
> leave them off. They were installed by Discount Tire on
> the first pair of rears, but extend the possible contact
> point about 1.5 inches beyond the wheel, but perhaps
> only .5 inches beyond the lugnuts. Maybe not enough to
> really worry about. Shan Rose bought the "black" wheels
> but I went with the chrome finish. Shan showed pics both
> with and without the "star" hubcaps. I'll have them leave
> off the hubcaps on the wheels to install later this week
> and see which way I want to go from that point.
>
> T.I.A.
>
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ~~ ~ D C "Mac" Macdonald ~ ~~
> ~ ~ Amateur Radio - K2GKK ~ ~
> ~ ~ USAF and FAA, Retired ~ ~
> ~ ~ ~ Oklahoma City, OK ~ ~ ~
> ~~ ~ ~ "The Money Pit" ~ ~ ~~
> ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> ~ www.gmcmhphotos.com/okclb ~
> ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> ______________
> |[ ] [][ ][|\
> |--OO--[]---O-*
>
>
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Terry Taylor
'74 ex-Eleganza SE
San Lorenzo, CA
http://www.n6mon.org
http://dldesignstore.com
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| Re: [GMCnet] Wheel Spacers [message #168174 is a reply to message #168159] |
Tue, 01 May 2012 15:59 |
MikeT
Messages: 225
Registered: November 2009
Location: Marine City, Michigan
Karma: 0
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Senior Member |
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I've replaced almost everything on the front end. Bearings, bushings, brakes, ball joints, tie rods. The PO had the front end gone though with a fine tooth comb by Buskirk in Mi in 2005 before closing. They even reinstalled the relay lever. Checked ride height, new BF Goodrich TA's. My steering is still not rock solid. I also replaced the steering gear box with my parts coach that had 96K on it.. Steering shaft is good and I replaced the bearing just above the two piece blue shaft. Still play and wondering that really hurts on a 2K trip. I'm thinking the problem might be in the rear. Dave Lenzi is going to check it out again in about a month.
Question: Do the folks that have the wheel spacers notice a difference? If so, maybe I will try those.
Thanks.
Mike Thomas
Marine City, MI
77 ex Palm Beach
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| Re: [GMCnet] Wheel Spacers [message #168176 is a reply to message #168174] |
Tue, 01 May 2012 17:02 |
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ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
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Senior Member |
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Mike,
You sound like an excellent candidate for a "Check-the-Ride-Height" and "Weight Balance" check up. What you describe is exactly what I read from Jerry Work. Ride height is so very important on our coaches, and it sounds as if you've checked almost everything else. The other thing noted is weight balance. Weigh each axle to determine weight distribution.
Larry Davick
Fremont, California
The Mystery Machine
'76 (ish) Palm Beach
----- Original Message -----
From: "Thomas Mike" <mthomas@wideopenwest.com>
To: gmclist@temp.gmcnet.org
Sent: Tuesday, May 1, 2012 1:59:33 PM
Subject: Re: [GMCnet] Wheel Spacers
I've replaced almost everything on the front end. Bearings, bushings, brakes, ball joints, tie rods. The PO had the front end gone though with a fine tooth comb by Buskirk in Mi in 2005 before closing. They even reinstalled the relay lever. Checked ride height, new BF Goodrich TA's. My steering is still not rock solid. I also replaced the steering gear box with my parts coach that had 96K on it.. Steering shaft is good and I replaced the bearing just above the two piece blue shaft. Still play and wondering that really hurts on a 2K trip. I'm thinking the problem might be in the rear. Dave Lenzi is going to check it out again in about a month.
Question: Do the folks that have the wheel spacers notice a difference? If so, maybe I will try those.
Thanks.
--
Mike Thomas
Troy, MI
77 ex Palm Beach, 77 Purple ex Palm Beach, 77 Royale (rear bath)
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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| Re: [GMCnet] Wheel Spacers [message #168181 is a reply to message #168158] |
Tue, 01 May 2012 17:26 |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Mac,
Here you go:
http://www.appliedgmc.com/prod.itml/icOid/656
HOWEVER, it has been noted here on a number of occasions that if your front
end / steering is not in really good shape the wheel spacers will have a
tendency to accentuate any problems!
Regards,
Rob M.
-----Original Message-----
From: D C *Mac* Macdonald
Thanks to the folks who have explained that the offset
of various wheels is given in WHOLE millimeters. It
is now obvious that my "plan" to use the -134 (mm)
KMD Rock Star wheels as the drive wheels in an attempt
to equalize front and rear track is ill-conceived. I
had thought that the offset measurement "must" be in
tenths of millimeters (-13.4 and +11.1 mm). That would
have been a difference of only 24.5mm or just under
one inch for each side. My bad!
I will have to use the same +111 (mm) offset wheels
front and rear.
Therefore, I'd like to know size and source(s) for the
wheel spacers to move the drive wheels out to do this.
I think I'll order the second pair or rear wheels today.
I am undecided whether to install the "star" hubcaps or
leave them off. They were installed by Discount Tire on
the first pair of rears, but extend the possible contact
point about 1.5 inches beyond the wheel, but perhaps
only .5 inches beyond the lugnuts. Maybe not enough to
really worry about. Shan Rose bought the "black" wheels
but I went with the chrome finish. Shan showed pics both
with and without the "star" hubcaps. I'll have them leave
off the hubcaps on the wheels to install later this week
and see which way I want to go from that point.
T.I.A.
~~ ~ D C "Mac" Macdonald ~ ~~
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Wheel Spacers [message #170518 is a reply to message #168159] |
Tue, 22 May 2012 10:34 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Hi, Terry.
It took me awhile to find your reply (below) again.
How much do you want for the spacers? What
would be shipping ("If it its, it ships.") through
US Postal Service?
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> Date: Tue, 1 May 2012 08:26:10 -0700
> From: n6mon@pacbell.net
> To: gmclist@temp.gmcnet.org
> Subject: Re: [GMCnet] Wheel Spacers
>
> Not sure what offset you need, Mac, but I have a set of 2"
> spacers that are excess to my needs (I now have the 1 ton
> front end).
>
> On 5/1/2012 8:12 AM, D C *Mac* Macdonald wrote:
> > Thanks to the folks who have explained that the offset
> > of various wheels is given in WHOLE millimeters. It
> > is now obvious that my "plan" to use the -134 (mm)
> > KMD Rock Star wheels as the drive wheels in an attempt
> > to equalize front and rear track is ill-conceived. I
> > had thought that the offset measurement "must" be in
> > tenths of millimeters (-13.4 and +11.1 mm). That would
> > have been a difference of only 24.5mm or just under
> > one inch for each side. My bad!
> >
> > I will have to use the same +111 (mm) offset wheels
> > front and rear.
> >
> > Therefore, I'd like to know size and source(s) for the
> > wheel spacers to move the drive wheels out to do this.
> >
> > I think I'll order the second pair or rear wheels today.
> >
> > I am undecided whether to install the "star" hubcaps or
> > leave them off. They were installed by Discount Tire on
> > the first pair of rears, but extend the possible contact
> > point about 1.5 inches beyond the wheel, but perhaps
> > only .5 inches beyond the lugnuts. Maybe not enough to
> > really worry about. Shan Rose bought the "black" wheels
> > but I went with the chrome finish. Shan showed pics both
> > with and without the "star" hubcaps. I'll have them leave
> > off the hubcaps on the wheels to install later this week
> > and see which way I want to go from that point.
> >
> > T.I.A.
> >
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
> > ~~ ~ D C "Mac" Macdonald ~ ~~
> > ~ ~ ~ Oklahoma City, OK ~ ~ ~
> > ~~ ~ ~ "The Money Pit" ~ ~ ~~
> > ~ ~ ~ ex-Palm Beach, 76 ~ ~ ~
> > ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
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| Re: [GMCnet] Wheel Spacers [message #170603 is a reply to message #170522] |
Wed, 23 May 2012 00:10 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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If you have a 1 ton , you automatically have a 3" spacer as the wheel
will not clear the calipers.
We have supplied over 200 of the 2' spacers for the standard front end.
Only complaints came from those that had worn relay joints.
If you understand the theory of why this helps improve handling on
rutted asphalt roads.
Jerry Work did a very great presentation at Western States, and agree
that IF, you do all the things correctly, one might not need the
spacers,
I still feel that at times it does help.
On Tue, May 22, 2012 at 8:58 AM, Dan Borlase <bord@shaw.ca> wrote:
>
>
> Terry...if Mac does not take your spacers I may be interested.
> Dan
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--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Wheel Spacers [message #170682 is a reply to message #170673] |
Wed, 23 May 2012 20:19 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
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Senior Member |
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Good evening, Adrien.
The KMC XD775 Rock Star alloy wheels I am using
have a 111 mm (4.37 ") offset. This the amount
that the mounting face of the wheels is moved
outward from the center of the 6 " wide rims.
In other words, the center of the rim is about
1.37 " inboard of the disk rotor plate. The 2 "
spacer would then move that rim center to .63 "
outboard of the disk rotor face, if my calcu-
lations are correct.
It appears that these spacers are in FAIRLY
common use and I have not heard that there is
a particularly egregious bearing/spindle wear
problem, especially since the average number of
miles driven annually is probably under 5,000.
"Rut wander" can be a problem here in Oklahoma
with the strong crosswinds on east/west highways
about 90% or more of the time!
I will be alert to any handling problem that
comes about above the bit of looseness that is
already present in the steering. It is far less
than that of the 1950 Ford convertible that I
used when dating my wife and taking us from FL
to TX shortly after wedding to begin a 20-year
US Air Force career!
Thanks for the information. Most of it was quite
familiar already.
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
*[ ]~~~[][ ][|\
*--OO--[]---O-*
> To: gmclist@temp.gmcnet.org
> From: fixman54@syix.com
> Date: Wed, 23 May 2012 19:21:14 -0500
> Subject: Re: [GMCnet] Wheel Spacers
>
>
>
> Mac,
>
> I know about the tracking differences that is built in to our coaches (LOOKS, and rut tracking), but I Keep thinking about what spacers do to the designed 'front end geometry'.
>
> Not to mention the difference in load forces imposed on the hub bearings. I'm surprised that they're lasting like they do.
>
> Here are some site about FEG also none as Steering Geometry.
>
> > http://www.scribd.com/doc/15355738/Steering-Geometry-Angles <
>
> > http://www.motor.org.uk/documentlibrary/Sep%2009/TT%20_%20Sept%2009.pdf <
>
> > http://www.google.com/search?q=steering+geometry&hl=en&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=NXa9T5LtDsqliQKorZi5D w&sqi=2&ved=0CGoQsAQ&biw=1600&bih=688 <
> Adrien & Jenny
> 75 Glenbrook
> Yuba City,Ca.
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