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August Special

Purchase RPI  Large Rubber Pyramid<br />Three Cavity with Eye Bolt
RPI
$11.00
RPI Large Rubber Pyramid
Three Cavity with Eye Bolt


RPI Rubber pyramid chock with aggressive, 3 cavity base tread.

Frequently Asked Questions

Below are frequently asked questions concerning chocks and chock usage. If you do not see the answer to your question, please contact us at sales@chocks.com.

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Chock Suggestions
Use Selector

Please scroll above to find suggested use for your wheel chock needs.

 

Question:What is percent grade limit?

Answer:Rise over run. ex. If you go ten feet with a three foot rise, your percent grade would be 30%.

Question: What is EPDM?

Answer: EPDM is Ethylene Propylene Diene Monomer, a synthetic rubber. It's a highly flexible stable material, a terpolymer of ethylene and propylene. It has a saturated polymer chemical "backbone," which gives it excellent resistance to ozone and many other advanced chemicals found in today's environment.

Question: What is SBR?

Answer: SBR stands for styrene butadiene rubber. Its technical chemical type is Styrene-butadiene copolymer and is a very abrasion resistant material and has good physical strength.

Question: Is performance significantly increased by two chocks instead of one?

Answer: Yes, two wheel chocks actually provide twice the protection of one.(see Hot Tips)

Question: Our town in upstate NY has steep grades. What is the best use chock for fire trucks?

Answer:Our HWG "Super Gripper" is a great paired chock for fire departments all over the country.

Question:Question: What is the velocity of a truck on a 30% grade after a distance of .2 meters?

Answer: The velocity after a distance of .2 meters, not accounting for the coefficient of friction, is approximately 3 feet per second.

Question: What is SAE J348 and what is its use.

Answer:SAE J348 is a standard set by the Society of Automotive Engineers that predicts the potential of any one wheel chock given a worst case scenario.

Question: I would like to know which chock would be appropriate for the Corvette sitting in my garage to keep it from rolling?

Answer: Our LWG is a great light aluminum vehicle chock, for use with most passenger, and light truck applications

Question: I have a utility trailer that I haul a backhoe with. Which chock would be best for this use?

Answer: Our RPC Pyramid is a good, yet inexpensive rubber chock for use in construction, or any punishing applications where wear and tear are inevitable.

Question: What would be the best chock for a single axel, one ton dump truck?

Answer:Our RPA has the same crush resistance as our RPC, but it is lighter with ribbed structural support. A good choice!

Question: I have a Mercedes, and a steep, paved driveway. What is the best chock to use for this situation?

Answer: Our MWG would be the right choice. It is a medium aluminum chock with the gripping power, and the durabilty to hold heavy loads from moving, even at steep grades.

Question: My company is looking for a good aluminum chock for use at our loading docks. What is the best chock for this job?

Answer: Our HGS is a great chock for this purpose.

Question: I own a concrete company with a fleet of cement trucks. I would like to know what the best all around chocks for this application?

Answer: You need a wide base chock with low PSI to resist soil compression. Our HPG is the chock for you.

Question: What is the best general use chock for my squad car?

Answer:Our LRG-E is a good all around chock for light vehicles such as passenger cars.

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