GotQuestions? Wheel End Solutions

Q. Will polyurethane motor mounts cause my truck to vibrate more?

June 11, 2014

A. There is a myth that polyurethane components are harder than rubber, this comes from history where there were different formulations and suppliers, as well as the intent to dampen the vibration in the higher horsepower and torque vehicles.

Author: Jeff Geist | Posted @ Wednesday, June 11, 2014 12:00 AM | » Comments(1)

Q. What makes the STEMCO APE axle sleeve better than the competition?

May 28, 2014

A. The STEMCO APE sleeve is quality hardened material, actually harder than the axle eye, enhancing your axle for better performance.

Author: Jeff Geist | Posted @ Wednesday, May 28, 2014 12:00 AM | » Comments(0)

Q. Why is the K120I king pin longer than the pin that came out of the truck?

May 14, 2014

A. Spicer/International used to make their pin this size.

Author: Jeff Geist | Posted @ Wednesday, May 14, 2014 12:00 AM | » Comments(0)

Q. What are the proven benefits of automatic tire inflation?

April 30, 2014

A. First, properly inflated tires are safer, last longer, and offer a balance between fuel economy and traction. Second, tires are one of the top expenses for trucking companies.

Author: Jeff Geist | Posted @ Wednesday, April 30, 2014 12:00 AM | » Comments(0)

Q. With my parking brakes applied I can roll the truck forward. What's the problem?

Also, it doesn't move when I tried to reverse. The brake adjustment and brake system condition appear to be okay with 1.25 pushrod travel, 75% of the brake shoe is still there, and the drum are not damaged from heat glazing.

April 21, 2014

A. With 75% lining left on the shoes and the stroke at 1.25”, I question whether the drum is within spec or the s-cam bushings are worn out.

Author: Jeff Geist | Posted @ Monday, April 21, 2014 12:00 AM | » Comments(1)

Q. What environmental specifications and certifications does the TracBAT RF sensor have?

April 7, 2014

A. We do internal testing when making changes to the TracBat but I don’t have a MIL standard that we test to. These are the tests we run...

Author: Jeff Geist | Posted @ Monday, April 7, 2014 12:00 AM | » Comments(0)

Q. I need to know the cost factor between starting and stopping 19 times as apposed to starting and stopping 4 times in the same amount of miles.

I am doing a cost analysis on braking a semi - We haul 98,000lb on six axle tractor trailer rigs.

March 31, 2014

A. There is not enough information to calculate a precise dollar amount, however, you can make a reasonable estimate that your cost of operation performing (19) start/stop cycles VS. (4) would be (19 divided by 4) or 4+ times.

Author: Jeff Geist | Posted @ Monday, March 31, 2014 12:00 AM | » Comments(0)

Q. You released Aeris by STEMCO, your Automatic Tire Inflation System (ATIS) two years ago. What makes it different from an engineering and maintenance perspective?

March 17, 2014

A. At STEMCO, we’re wheel end experts, and over the years, we have observed a real problem with wheel ends getting pressurized, seals failing, and lubricants being discharged, due to faulty inflation systems releasing air into the hub. We designed Aeris on the principle of never, ever pressurizing the wheel end.

Author: Jeff Geist | Posted @ Monday, March 17, 2014 12:00 AM | » Comments(0)

Q. Does STEMCO make a metric valve stem that is common on Asian and Euro brand trucks?

This metric size refers to a smaller hole in the wheel to fit a smaller valve stem. In searching around the US market, I have been unable to find this dimension or able to gauge how common or standard this size is. Ken-Tool makes a slide hammer valve remover for Domestic wheels we're looking to adapt to fit these international wheels.

March 3, 2014

A. Yes, Europe uses a smaller size valve stem hole (10mm) with an o-ring seal vs a rubber bushing, same as used in typical North American aluminum wheels (not steel).

Author: Jeff Geist | Posted @ Monday, March 3, 2014 12:00 AM | » Comments(0)

Q. STEMCO Motor Wheel CentriFuse Brake Drums are well known for weight savings, but what other advantages can the user expect?

January 26, 2014

A: Independent laboratory testing has shown CentriFuse Drums to be the most durable and longest wearing drums available.

Author: Jeff Geist | Posted @ Sunday, January 26, 2014 12:00 AM | » Comments(1)

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Jeff Geist

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STEMCO
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