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Old 08-10-2013, 07:12 PM   #29
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Consider all claims as snake oil unless you have good test data to back up their claims. Don't get me started on K&N air cleaners.

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Old 08-10-2013, 08:11 PM   #30
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Just spend the bucks and buy the damn things....be be objectively obtuse, your an Airstream owner after all.

What happened Perry...too much oil?

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Old 08-10-2013, 09:06 PM   #31
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I am an engineer and usually don't buy something just on claims. The Centramatics probably do what they are supposed to do but do I need them? The trailer has suffered some out of balance damage in the past but seems to be doing fine now with car tires that are balanced. If I end up changing rims I might upgrade to disk brakes and Centramatics both of which have clearance problems with my rims.

Remember Slick 50 and the false claims they made. The stuff was so bad it clogged oil pump intake screens. My point is, do the research before buying anything.

I did not go to synthetic oil till we tested it at NASA on the sly. Mobil 1 is good stuff.

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Old 08-10-2013, 09:25 PM   #32
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But Delo 400 is better. If you really want to know about oil go to www.bobistheoilguy.com and learn all there is to know. Then go buy some Delo.
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Old 08-11-2013, 09:33 AM   #33
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Just installed the Centramatics on my 2012 Dodge 2500HD 4x4 which had factory balanced Michelin tires installed. There is a perceptible improvement as far as smoothness. The cross country today on both interstate and secondary highways will tell the tale. You get a 30 day trial anyway.
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Old 08-11-2013, 05:12 PM   #34
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(The Dynabeads option is intriguing but even if they do work on a wider tire (i.e. non-motorcycle tire) I don't know that they would be compatible with the in-tire TPMS hardware.)
The beads will be in the bottom of the tire at a stop and get thrown to the outside when the tire is spinning. The TPMS is mounted in the valve stem which is to the inside/center of the wheel. I doubt they would ever come into contact with the balancing beads.
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Old 08-11-2013, 05:47 PM   #35
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Not sure where you got that from. M1 is one of the best oils out there for gas engines and yes I spend time on bobistheoilguy. It is a good sight. There is no perfect oil. Let's not highjack this thread and get back to Centramatics.

Perry

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But Delo 400 is better. If you really want to know about oil go to www.bobistheoilguy.com and learn all there is to know. Then go buy some Delo.
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Old 08-11-2013, 07:09 PM   #36
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I've posted this before, anyway here's an article on centramatics that I found interesting. It claims that the "special" centramics that are sold for Airstreams (at least the ones with 15 inch wheels) are in fact smaller diameter centramics that are far less effective.

http://home.hiwaay.net/~tomorkim/Centramatics.htm
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Old 08-11-2013, 07:14 PM   #37
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Yes they would be less effective since the diameter is smaller to accommodate the 15 inch rims. This is another reason why I am not using them.

Perry

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I've posted this before, anyway here's an article on centramatics that I found interesting. It claims that the "special" centramics that are sold for Airstreams (at least the ones with 15 inch wheels) are in fact smaller diameter centramics that are far less effective.

http://home.hiwaay.net/~tomorkim/Centramatics.htm
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Old 08-11-2013, 09:38 PM   #38
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Quote:
Originally Posted by reinergirl View Post
I've posted this before, anyway here's an article on centramatics that I found interesting. It claims that the "special" centramics that are sold for Airstreams (at least the ones with 15 inch wheels) are in fact smaller diameter centramics that are far less effective.

http://home.hiwaay.net/~tomorkim/Centramatics.htm

Interesting,
the author states that the AS Centramatic can ONLY offset 214 gms of imbalance. That's almost half a pound!!! That's way out of balance. I would hope to never have to deal with that much.
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Old 08-12-2013, 05:35 AM   #39
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But Dave...it's a blog on the interweb, it must be accurate.

Bob
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Old 08-12-2013, 06:17 AM   #40
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I'd like to have the sort of information Evan wants about lots of things Airstream, but no one does that sort of testing. The RV market is too small to spend the kind of money necessary to do good testing.

So, like many decisions, it is a guesstimate and I hope my $200 was well spent.

What I really need is Centramatics for the brain so I won't be unbalanced anymore.

Evan, when you get the new Michelins, the trailer should ride smoother than with the Marathons, so if you add Centramatics at the same time, you won't be able to tell what is responsible for the improvement.

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Old 08-12-2013, 08:29 AM   #41
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There was an improvement in the Dodge ride and no vibration in the steering wheel after the Centramatics were installed.

I had the Airstream compatible "200-221 Special" Centramatics installed on my 25FB before I picked the trailer up and continued with them after switching from the GYM to the Michelin tires. Even if it just a slight improvement, the $200 is not a great expense compared to the $80,000+ list price of the trailer.

I have the "300-356" Centramatics (only for 16" wheels) on order for our new 27FB and I will install them along with the 16" Michelin tires and SenDel wheels.
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Old 08-12-2013, 08:48 AM   #42
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Switz, you're most probably aware of the small offset the Centramatics give when installed under the wheels, and the advisory not to offset wheels with the Never Lube bearings. I'm having trouble reconciling that incompatibility, even as small as it seems. How do you feel about it?

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