Home » Public Forums » GMCnet » [GMCnet] Bogie Arm Straightener
| [GMCnet] Bogie Arm Straightener [message #137005] |
Mon, 01 August 2011 08:54  |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Some time back, there were some pictures posted of a very robust device made
for the purpose of straightening bent bogie arms. I just tried to search the
picture site and was unsuccessful in finding those pix. Does anyone have a
link? Thanks,
Jim Hupy
Salem, OR
78 GMC Royale 403
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| Re: [GMCnet] Bogie Arm Straightener [message #137146 is a reply to message #137005] |
Tue, 02 August 2011 00:08  |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
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Jim,
We have not had the time to work with it, so if you like, I will send
it up to you and try it out.
On Mon, Aug 1, 2011 at 6:54 AM, James Hupy <jamesh1296@gmail.com> wrote:
> Some time back, there were some pictures posted of a very robust device made
> for the purpose of straightening bent bogie arms. I just tried to search the
> picture site and was unsuccessful in finding those pix. Does anyone have a
> link? Thanks,
> Jim Hupy
> Salem, OR
> 78 GMC Royale 403
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
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] Bogie Arm Straightener [message #137150 is a reply to message #137146] |
Tue, 02 August 2011 04:31 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Jim, if you would not mind sending it, please do so. I will give it a real
test. Got at least three coaches to use it on. Should give us some valuable
enpirical data.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Mon, Aug 1, 2011 at 10:08 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Jim,
> We have not had the time to work with it, so if you like, I will send
> it up to you and try it out.
>
> On Mon, Aug 1, 2011 at 6:54 AM, James Hupy <jamesh1296@gmail.com> wrote:
> > Some time back, there were some pictures posted of a very robust device
> made
> > for the purpose of straightening bent bogie arms. I just tried to search
> the
> > picture site and was unsuccessful in finding those pix. Does anyone have
> a
> > link? Thanks,
> > Jim Hupy
> > Salem, OR
> > 78 GMC Royale 403
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> >
>
>
>
> --
> Jim Kanomata
> Applied/GMC, Fremont,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Bogie Arm Straightener [message #137153 is a reply to message #137150] |
Tue, 02 August 2011 06:12 |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Jim,
How 'bout giving us a good report on how you use it; specifically, the
metrology.
Ken H.
On Tue, Aug 2, 2011 at 5:31 AM, James Hupy wrote:
> Jim, if you would not mind sending it, please do so. I will give it a real
> test. Got at least three coaches to use it on. Should give us some valuable
> enpirical data.
> Jim Hupy
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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: [GMCnet] Bogie Arm Straightener [message #137161 is a reply to message #137153] |
Tue, 02 August 2011 08:03 |
James Hupy
Messages: 6806
Registered: May 2010
Karma: -62
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Senior Member |
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Ken, OK. Pix and articles to follow. I will detail the geometry involved
also. Might do a GMCWS presentation on it in OCT if it turns out well.
Thanks for the interest.
Jim Hupy
Salem, OR
78 GMC Royale 403
On Tue, Aug 2, 2011 at 4:12 AM, Ken Henderson <hend4800@bellsouth.net>wrote:
> Jim,
>
> How 'bout giving us a good report on how you use it; specifically, the
> metrology.
>
> Ken H.
>
>
> On Tue, Aug 2, 2011 at 5:31 AM, James Hupy wrote:
> > Jim, if you would not mind sending it, please do so. I will give it a
> real
> > test. Got at least three coaches to use it on. Should give us some
> valuable
> > enpirical data.
> > Jim Hupy
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
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| Re: [GMCnet] Bogie Arm Straightener [message #139418 is a reply to message #137146] |
Tue, 16 August 2011 08:11 |
druber
Messages: 58
Registered: March 2004
Location: Syracuse, IN
Karma: 0
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Member |
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Jim, bending in and out with this device is a cakewalk. However, "twisting"
the arm(s) is a bit scary. Be sure to use anti gall compound on the
threads, and wear safety glasses. It puts tremendous loads on the four
backing plate bolts, so make sure they are at least grade 8! I was afraid a
head might pop of one of those bolts, and if it did, the others would go
too, like a Gatling gun! So steer clear of those bolts when under twisting
load and wear safety glasses. Hopefully you will not have to twist any of
your arms! It's incredible how much you have to twist them to make them
take a set! Ideally, you would "over twist" a bit, then "untwist" a bit to
partially relieve internal stresses.
Also, this thing works on the assumption your mounting surface on the frame
is parallel with wheel alignment, and vertical when the coach is level.
Bear in mind that even when everything is square/vertical, the wheels take a
slight negative camber when weight is put on them. You may have to use
shims between the casting and frame to compensate for that.
Last thing...I had pretty bad wear in the pins and bushings on the passenger
side and had to repair before bending arms. No amount of alignment will do
any good if the pins/bushings are worn!
Don't normally monitor this forum anymore...just happened to see this post,
so please send any correspondence regarding this to redruber@gmail.com
Good Luck,
Druber
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Jim Kanomata
Sent: Tuesday, August 02, 2011 1:08 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Bogie Arm Straightener
Jim,
We have not had the time to work with it, so if you like, I will send
it up to you and try it out.
On Mon, Aug 1, 2011 at 6:54 AM, James Hupy <jamesh1296@gmail.com> wrote:
> Some time back, there were some pictures posted of a very robust device
made
> for the purpose of straightening bent bogie arms. I just tried to search
the
> picture site and was unsuccessful in finding those pix. Does anyone have a
> link? Thanks,
> Jim Hupy
> Salem, OR
> 78 GMC Royale 403
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
_______________________________________________
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| Re: [GMCnet] Bogie Arm Straightener [message #139460 is a reply to message #137150] |
Tue, 16 August 2011 13:01 |
druber
Messages: 58
Registered: March 2004
Location: Syracuse, IN
Karma: 0
|
Member |
|
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Jim, bending in and out with this device is a cakewalk. However, "twisting" the arm(s) is a bit scary. Be sure to use anti gall compound on the threads, and wear safety glasses. It puts tremendous loads on the four backing plate bolts, so make sure they are at least grade 8! I was afraid a head might pop of one of those bolts, and if it did, the others would go too, like a Gatling gun! So steer clear of those bolts when under twisting load and wear safety glasses. Hopefully you will not have to twist any of your arms! It's incredible how much you have to twist them to make them take a set! Ideally, you would "over twist" a bit, then "untwist" a bit to partially relieve internal stresses.
Also, this thing works on the assumption your mounting surface on the frame is parallel with wheel alignment, and vertical when the coach is level. Bear in mind that even when everything is square/vertical, the wheels take a slight negative camber when weight is put on them. You may have to use shims between the casting and frame to compensate for that.
Last thing...I had pretty bad wear in the pins and bushings on the passenger side and had to repair before bending arms. No amount of alignment will do any good if the pins/bushings are worn!
Don't normally monitor this forum anymore...just happened to see this post, so please send any correspondence regarding this to redruber@gmail.com
Good Luck,
Druber
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