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Old 04-26-2014, 09:40 AM   #15
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Force of habit for me...my military job required it for all special purpose vehicles...I think it is a remnant of the "old" standard transmissions.
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Old 04-26-2014, 10:03 AM   #16
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Quote:
Originally Posted by luckyd View Post
When I had a gasser MH I used the chocks.
With the air brakes on my DP I do not.

Have seen a lot of gas MH's with the jacks down
so far the front wheels are off the ground.
Have not seen chocks used on the rear when
they do this.
This could be a very expensive accident waiting to happen.
I only use chocks when one set of dual tires is lifted nearly, or completely, off the ground when level.
BTW, that has been necessary only a few times in all the years I have been RVing.
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Old 04-26-2014, 10:04 AM   #17
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I use them if I put the Lynx blocks under the rears, before putting down the jacks.

Chuck
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Old 04-26-2014, 10:16 AM   #18
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If you have a coach with air brakes, chocking is not necessary unless you do something really stupid like raise both sides of the dually wheels off the ground with the hydraulic jacks. I have air leveling so that's an impossibility.

Once my air supply system bleeds down past 80 psi which only takes a few hours once parked, the rear wheels will NOT move. You need to have air pressure over 80 psi to release the mechanical springs which then will allow the wheels to move.

Dr4Film ----- Richard
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Old 04-26-2014, 11:12 AM   #19
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We always used chocks with our previous TT and 5th Wheel and have continued the practice with our MH as a routine part of our setup procedure. Readily accessible stored in our "setup" bay. They are placed to prevent any potential fore and aft movement in accordance with the specific site requirements. Takes less than 30 seconds for extra safety, security and peace of mind.
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Old 04-26-2014, 11:22 AM   #20
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Talking Wheel chocks or not?

No matter if one uses them or not........for everyone, if you look like this at the end of the day.........what ever decision's you have made.....must be OK
If you do not look like this.........maybe "change's" are in order....
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Old 04-26-2014, 11:22 AM   #21
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I have them but I only keep them for those rare occasions where I am just parked on a steep incline. The Emerg Brake on the F-53 is more like a clutch brake in the transmission and I just can't bring myself to trust it on any serious incline. When camped however, I just can't see how a MH would be able to move (wheels off the ground or no) when it is resting on jacks. I suppose anything could slide but if that were the case, what kind of incline would you need to be on? Can't see ever pitching my tent on ground so unsuitable.
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Old 04-26-2014, 11:49 AM   #22
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Chocking a motorhome.

The reliability of jacks to prevent RV shifting depends at least in part on the site pad surface e.g. gravel, dirt, sod, asphalt, concrete, etc and on weather conditions e.g. heavy or prolonged rain, strong winds, unanticipated snow (this year at least), etc as well as incline. Jacks have been known to sink unexpectedly and possibly slide as a result.

We always use Jack Pads regardless of the site surface to help prevent the foregoing - still with no guarantees since there is some potential for the jacks to move on the pads. Hence our routine use of chocks.

Just offered as "food for thought"...
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Old 04-26-2014, 12:05 PM   #23
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No, it's a seriously thick concrete parking lot.
If you chock tires when they are hot/warm, and then pull the chocks when they are cold/cooled, the chocks will be much snugger!!
Doesn't matter what material you park them on, it's just Physics.
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Old 04-26-2014, 09:36 PM   #24
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One fellow thought his brakes had a problem.........and were not holding... Quite the conversation You are correct in your explanation for this chassis.
Yup, that was me. I thought I had a serious problem until Paul and others enlightened me. I do carry a large aluminum semi wheel chock for emergencies, but never have used it.
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Old 04-27-2014, 07:28 AM   #25
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I have a set of chocks that will mainly be used if I am on a steep site.
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Old 04-27-2014, 07:47 AM   #26
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We use chocks more often than not. About the only place we don't use them is a perfectly level concrete pad. Our motorhome is built on a Ford chassis. The parking brake consists of a single drum and shoe arrangement on the driveshaft. I'm not sure how successful 30 square inches of friction material would be when trying to hold back 22,000 lbs.
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Old 04-27-2014, 02:16 PM   #27
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I always chock, front and back of the back wheels - just one side. Just habit.
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Old 04-28-2014, 05:07 PM   #28
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No, it's a seriously thick concrete parking lot.
Cooler air at night vs when it was parked and chocked hot. Pressure goes down tire gets a tad flatter and the chocks get tighter. The vehicles arnt moving
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