| [GMCnet] MORE REACTION ARM TAKL [message #110435] |
Fri, 31 December 2010 21:49  |
Charles Aulgur
Messages: 78
Registered: March 2006
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I went to our yearly auto show here in San Diego today. When I was
walking through the BMW section, I noticed they had one
futuristically looking BMW Motorcycle on display so I decided to take
a look at the suspension systems. The rear suspension looked like a
smaller version of the GMC mid axle with a single arm supporting the
rear wheel from one side. And guess what; it had a separate
parallel arm to react the torque forces from braking and acceleration
back to the main frame, similar to the GMC version except the
reaction arm was on the top side. Their suspension arm was much more
complex then our GMC's as it had a drive shaft hidden inside the
suspension arm. Now, if we could get one of the Jims to copy that we
could have a six-wheel drive GMC.
I also noticed most of the larger vehicle with disc brakes on the
back seemed to have a small drum inside the disc for parking brake
similar to what MB has had for many years. Who is going to make one
for our GMCs with rear wheel disc brakes?
Chuck
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110438 is a reply to message #110435] |
Fri, 31 December 2010 22:21  |
Don A
Messages: 895
Registered: October 2008
Location: Dallas, TX
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My '05 GMC Safari/Astro has that rear disc brake with a drum parking brake inside. Seems like it would be easy to swap?
Don Adams Dallas, TX
'76 26' Glenbrook, '90 Sidekick
rebuilt by R Archer, powered by J Bounds, Koba
[IMG]http://www.gmcmhphotos.com/photos/data/6109/G2.jpg[/IMG]
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110439 is a reply to message #110435] |
Fri, 31 December 2010 22:25 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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All cars with rear disks have the little drum parking brake inside.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110489 is a reply to message #110478] |
Sat, 01 January 2011 10:42 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
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I was referring to modern cars. You can never truly get away from drum brakes. Most of those cited are older sports cars, or not in the mainstream.
I think the best setup for a GMC would be to add disks to the forward rear bogie and leave the rearward one as Drums, however, my coach bone stock stops surprisingly well...
| mcolie wrote on Sat, 01 January 2011 08:23 |
| Chr$ wrote on Fri, 31 December 2010 23:25 |
All cars with rear disks have the little drum parking brake inside.
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Chris,
Not the case - read on, examples are cited and there are many more.
Matt
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-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110494 is a reply to message #110479] |
Sat, 01 January 2011 10:58 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
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| mschultz wrote on Sat, 01 January 2011 07:25 |
... As far as six wheel drive, I have been thinking more along the line of electric motor wheels with solar powered and engine powered battery storage and regenative braking.
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Even more torque loads on the boogie arms. It doesn't matter if the torque comes from braking or acceleration, you'll get similar results... just opposite directions. IE: Under acceleration the mid wheels will "unload" just like the rear wheels do when braking.
Good reason to include reaction arms in any "6 wheel drive" system that doesn't replace the boogies.
Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo'
http://m000035.blogspot.com
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110527 is a reply to message #110435] |
Sat, 01 January 2011 18:33 |
kingd
Messages: 592
Registered: June 2004
Karma: 2
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Re separate calipers for the E brake. Look through the rear wheels of an Audi R8 road car. Not just old sports cars use a separate caliper. Yeah, I know Audi parts ain't cheap.
DAVE KING
P.S. anyone have a Nissan Competition Option 2 direct drive tranny for sale ?????
DAVE KING
lurker, wannabe
Toronto, Ontario, Canada
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| Re: [GMCnet] MORE REACTION ARM TAKL [message #110629 is a reply to message #110588] |
Mon, 03 January 2011 01:58 |
Jiffyjet2
Messages: 86
Registered: November 2008
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Jim:
Yes, in fact the one in the picture doesn't do all that good at holding back a 1400 lb car on a slope! I only posted the picture to show an example of how others have addressed the issue of disk brakes with a park brake. I'm thinking a nice set of wheel chocks might be the simplest answer, as long as you have a crewmember to pull them when you're ready to taxi:))
Cheers,
Jess Marker
Tacoma, WA
'74 Canyonlands, "the Great Pumpkin"
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