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09-24-2012, 02:20 PM
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#121
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Site Team
1974 31' Sovereign
Ottawa
, ON
Join Date: May 2008
Posts: 11,219
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Photo won't open for me, Perry...
__________________
“Courage is being scared to death, but saddling up anyway.” ...John Wayne...........................
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09-24-2012, 02:49 PM
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#122
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by perryg114
I said I would post the dimensions of my wheels a while back to see if anyone could tell me if the Centramatics would fit my wheels. Here is a drawing of what the inside of my wheels look like. I made this drawing to see if I could use disk brakes with my wheels and the answer is no, they won't fit without some spacers. The question is if the centramatics will fit. If the Centramatics are bigger than 11.5 inches they won't fit.
http://www.motorcycleproducts.org/AS...Rim%5B1%5D.pdf
Perry
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Your photo opened just fine for me.
That drawing shows that there is a 11.5 inch flat surface on the backside of the wheel.
If that's the case then the Centramatic that we have made will fit just fine.
Andy
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09-24-2012, 03:15 PM
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#123
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Rivet Master
1967 26' Overlander
Winston Salem
, North Carolina
Join Date: Oct 2007
Posts: 524
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Quote:
Originally Posted by Aage
Photo won't open for me, Perry...
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It is a pdf file.
__________________
Greg
Winston Salem, NC
WBCCI 5218,
Corresponding Secretary Piedmont NC Unit 161,
1967 Overlander International.
1979 Avion 30ft rear bath
TV's 88 Chevy Suburban 454, 3:42, TH400
95 Cadillac FW Brougham, LT1,3:42, 7k tow pk.
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09-24-2012, 03:17 PM
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#124
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airperson
2006 25' Classic
Ft Worth
, Texas
Join Date: Sep 2007
Posts: 207
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Was told that they were on my Airstream. Can I tell if they are without taking off tires.
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09-25-2012, 07:32 AM
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#125
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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Andy what is the outer diameter and thickness at the outer diameter of your balancers?
What I need to do next is draw the drum. I think the main problem is how far the drum surface is from the plane of the mounting bolts. The boses for the lug bolts stick out past the drum surface a good bit so I don't think it will be a problem. I think the problems occur when newer drums are used with older rims.
Perry
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09-25-2012, 07:53 AM
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#126
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Rivet Master
1956 22' Flying Cloud
1953 32' Liner
1955 22' Safari
Valley View
, Texas
Join Date: Jan 2006
Posts: 3,971
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Why not call the Centramatic Company. Located just south of Ft. Worth, Texas.....they are great folks and will do all to help you out. Drive in there with your vehicle and they will even install the Centramatics while you wait.
__________________
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."
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09-25-2012, 08:08 AM
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#127
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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I did call them and they make a special model 200-221 with a 10" outer diameter and 3/4" thickness at that diameter. This is probably the one Andy has.
Their standard model is a 300-356 which is 12-3/4" diameter and 7/8" thickness. This won't fit 15" rims but might fit a 16" rim. You have to measure the inside of the rim to find out.
These are both are a 6 bolt pattern on 5.5" bolt circle.
I will draw up my brake drums and post the entire assembly when I get it made. Hopefully this won't take as long as driving to TX. Ok so I have too much spare time at work.
Perry
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09-25-2012, 11:08 AM
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#128
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by Melody Ranch
Why not call the Centramatic Company. Located just south of Ft. Worth, Texas.....they are great folks and will do all to help you out. Drive in there with your vehicle and they will even install the Centramatics while you wait.
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Centramatic makes a "special model" for use, that is used on most of the Airstream and Argosy trailers.
Andy
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09-25-2012, 11:11 AM
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#129
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by perryg114
I did call them and they make a special model 200-221 with a 10" outer diameter and 3/4" thickness at that diameter. This is probably the one Andy has.
Their standard model is a 300-356 which is 12-3/4" diameter and 7/8" thickness. This won't fit 15" rims but might fit a 16" rim. You have to measure the inside of the rim to find out.
These are both are a 6 bolt pattern on 5.5" bolt circle.
I will draw up my brake drums and post the entire assembly when I get it made. Hopefully this won't take as long as driving to TX. Ok so I have too much spare time at work.
Perry
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Perry.
Yes, Centramatic makes the 10 inch version, for us.
The lip dimension on the outside of the circle, is 3/4 inch.
Andy
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09-25-2012, 01:31 PM
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#130
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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Can you define what special means in this case?
Perry
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09-25-2012, 03:09 PM
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#131
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Rivet Master
Airstream Dealer
Corona
, California
Join Date: Feb 2002
Posts: 16,497
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Quote:
Originally Posted by perryg114
Can you define what special means in this case?
Perry
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Special, in this case, means it is made exclusively for us, and is not in any catalog.
Andy
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09-27-2012, 12:15 PM
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#132
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Master of Universe
2008 25' Safari FB SE
Grand Junction
, Colorado
Join Date: Sep 2007
Posts: 12,711
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Several years ago when Inland Andy started carrying them I ordered them from him and they fit the 15" wheels. When I switched to 16" wheels, they still fit.
I think I saw them on the Centramatics website back then as well.
Gene
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09-27-2012, 12:24 PM
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#133
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Rivet Master
2019 27' Flying Cloud
Albuquerque
, New Mexico
Join Date: Nov 2005
Posts: 1,917
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I ordered mine directly from Centramatics.
__________________
Ken L 2019 Flying Cloud 27FB
2020 GMC Sierra 1500 Crew Cab 6.2L Max Tow Four Corners Unit WBCCI #5783
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09-27-2012, 01:07 PM
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#134
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Quote:
Originally Posted by CrawfordGene
Several years ago when Inland Andy started carrying them I ordered them from him and they fit the 15" wheels. When I switched to 16" wheels, they still fit.
I think I saw them on the Centramatics website back then as well.
Gene
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Ditto here...from Centramatic directly though.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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09-27-2012, 08:04 PM
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#135
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Site Team
1963 26' Overlander
Hollis
, New Hampshire
Join Date: Oct 2009
Posts: 2,647
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I've posted this link below before, I bookmarked it because it theorizes that the 10 inch centramics are far less effective than the full size ones.... Would any armchair mechanics or those of you more technically inclined care to comment on that conclusion?
http://home.hiwaay.net/~tomorkim/Centramatics.htm
__________________
Shelly : TAC NH-6 | AIR 41359
Visit my blog!
Parts needed : Braund Antenna front tube fold down model!
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09-27-2012, 10:10 PM
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#136
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Rivet Master
Port Orchard
, Washington
Join Date: May 2009
Posts: 4,463
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I ordered a set a few weeks ago. The Airstream ones were not listed on
centramatic's website. I called Centramatic and told them I needed a set for 15 inch Airstream wheels. I placed the order with them. They showed up in about 5 days. They fit the drums and my new 16 inch wheels just fine. I recommend that you order them from the factory. That way you are assured of getting what you need.
Ken
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09-28-2012, 06:53 AM
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#137
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Rivet Master
2007 30' Classic
Oswego
, Illinois
Join Date: Jul 2010
Posts: 13,669
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Quote:
Originally Posted by reinergirl
I've posted this link below before, I bookmarked it because it theorizes that the 10 inch centramics are far less effective than the full size ones.... Would any armchair mechanics or those of you more technically inclined care to comment on that conclusion?
http://home.hiwaay.net/~tomorkim/Centramatics.htm
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Marginally...maybe, IMHO. Centrifugal force will be somewhat less on a smaller diameter. HOWEVER, since Centramatic says that they become effective at 35mph, a smaller diameter (2"?) may become effective at 40mph?? Who cares?
The same argument could be made for a 12" set put on a 28" tall tire as opposed to a 32" tire. Centramatic doesn't sell different models specifically for taller tires, just different wheel shapes and configurations. I think it's much ado about nothing.
Also, I don't believe Centramatic advertises this product as a REPLACEMENT for spin balancing the tire and wheel. It is used in addition to balancing the tire and wheel, so the reduction in CALCULATED ability doesn't reduce the effectiveness of the product, unless you are WAY out of balance.
There is also the assumption that the same innerds are present in all models. I don't know if that's true or not.
__________________
-Rich-
"If the women don't find you handsome, they should at least find you handy." - Red Green
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09-28-2012, 07:00 AM
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#138
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Rivet Master
1981 31' Excella II
New Market
, Alabama
Join Date: Sep 2011
Posts: 6,145
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Tom who did those calculations is correct. The bigger the diameter of the balancer the more effective it is in correcting out of balance issues. However, if you get your tires balanced so they are in the ball park the balancers can take care of the imbalanced caused by the drums not being balanced. The reason they are 10" in diameter is so they will not hit the older 15" rims. If you are running 16" rims and you have 12.75 inches of space in the plane of the lug bolts then use the model 300-356 if you have 15" rims you need the 200-221 special which is the standard 5 bolt 200-221 drilled for 6 bolt rims. The standard 200-221 has a 5 bolt pattern so they need to know that that you want the 6 bolt 5.5in dia bolt pattern. If you order the ones from Andy they will fit and you don't have to worry about any of this.
Perry
Quote:
Originally Posted by reinergirl
I've posted this link below before, I bookmarked it because it theorizes that the 10 inch centramics are far less effective than the full size ones.... Would any armchair mechanics or those of you more technically inclined care to comment on that conclusion?
http://home.hiwaay.net/~tomorkim/Centramatics.htm
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09-28-2012, 07:53 AM
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#139
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Rivet Master
1956 22' Flying Cloud
1953 32' Liner
1955 22' Safari
Valley View
, Texas
Join Date: Jan 2006
Posts: 3,971
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Perry is right on. Call Andy and you will know what your getting...from my experience.
__________________
"If it can't be reduced, reused, repaired, rebuilt, refurbished, refinished, resold, recycled or composted
then it should be restricted, redesigned or removed from production."
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09-28-2012, 08:48 AM
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#140
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Rivet Master
2004 30' Classic Slideout
2021 33FB Classic
Colleyville
, TX
Join Date: May 2005
Posts: 1,540
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Quote:
Originally Posted by Airperson
Was told that they were on my Airstream. Can I tell if they are without taking off tires.
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Sure you can. If your wheels are spoked aluminum you won't be able to see through them as the metal pan of the Centramatics blocks the view. One cool modification is to take the Centramatics off, clean them with a good solvent or denatured alcohol and then paint them flat black with a heat resistant type paint or epoxy. The spokes of your wheels will show much better. Good luck and happy trails.
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In dog years, I'm dead!
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