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Old 10-02-2014, 12:37 AM   #1
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Wheel cut

What is the best wheel cut? I thought the higher the wheel cut the easier it is to make right hand turns. Would wheel cut influence your decision on buying a certain coach?
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Old 10-02-2014, 12:53 AM   #2
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Ours was 50 with the original 12,000# front axle, with the newer 14,600# one it's 55. It does make a difference in sharp turns either way.
Yes, it could influence a choice as I needed full lock with the old one to park alongside the house. If we go to a longer (43' or 45') I may have to redo the entrance gate as it's tight now with the 41' rig.
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Old 10-02-2014, 07:10 AM   #3
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You are missing half of the information to make any comparison. A greater wheel cut on a vehicle with the same wheelbase (Steer to Drive) will of course, turn tighter. However, As HMs get longer a TAG is added and in some cases the wheelbase is actually shorter.

In the auto world there use to be a measurement offered called Curb-to-curb turning radius. In other words, how wide would the road have to be in order to make a U-turn vice a 3-point turn. This would not be useable to the HM community as we would have to also take into account tail swing (which would be greater radius than the tires on MH with significant amount of MH behind the drive axle. Ever cringe watching an inexperienced MH driver negotiate fuel pumps???
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Old 10-02-2014, 09:10 AM   #4
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Freightliner chassis with straight front axles have 55 cut. The chassis with independent front suspensions have 60 cut.
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Old 10-02-2014, 09:27 AM   #5
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Cut is only part of it. Driving smart and thinking things through will make the smaller cuts work good enough to get into most spots.

If you cannot make the turn in one cut, just drive past, turn the opposite way to start lining up with the entrance and then turn the other way to drive ahead into the entrance. I call it wiggling in.

I have observed professional drivers put very large rigs into what many would think is an impossible location simply by using all of the maneuvering capabilities of their unit. Many do the same things with their cars.
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Old 10-02-2014, 09:41 AM   #6
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Quote:
Originally Posted by rdfugere View Post
....I thought the higher the wheel cut the easier it is to make right hand turns...

All other things being equal, A sharper wheel cut decreases the turning radius, whether right or left. How well you use the enhanced maneuverability is up to you. A sharper cut will also make it easier to take out the street sign on that right hand corner. ;-)
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Old 10-02-2014, 11:47 AM   #7
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........ A sharper cut will also make it easier to take out the street sign on that right hand corner. ;-)
My thoughts exactly
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Old 10-02-2014, 06:38 PM   #8
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Hi rdfugere,
For me, the best wheel cut is the largest wheel cut. My coach is 57 degrees. However, wheel cut will never be a show stopper in the buying decision process.
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Old 10-02-2014, 07:27 PM   #9
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Freightliner chassis with straight front axles have 55 cut. The chassis with independent front suspensions have 60 cut.
May be true for today's FL chassis, but not for all on the road. Our 2014 with IFS has a 60-degree cut, but as I recall, my 2008 (also FL with IFS) was either 50 or 55.
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Old 10-02-2014, 07:56 PM   #10
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Good illustration of wheel cut/ turning radius. Click on the chassis photos for a radius diagram...
Chassis Turning Radius, Wheel Cut, and Wheel Base of Diesel Motorhomes | New Motorhomes / RV Resources
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Old 10-02-2014, 09:15 PM   #11
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Our 2004 Vectra has a 56 degree wheel cut and 267" wheel base.
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Old 10-03-2014, 06:24 AM   #12
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If I'm understanding correctly, the higher the wheel cut, the sharper the turn. This makes is more important that you clear the object, at the corner,before you start the turn. Is this correct?
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Old 10-03-2014, 08:29 AM   #13
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If I'm understanding correctly, the higher the wheel cut, the sharper the turn.

This is correct.

This makes is more important that you clear the object, at the corner,before you start the turn. Is this correct?
Not unless you plan to go to full wheel cut when you make your turn. If both are the same wheel base and start from the same location in the turning lane and end up in the same position in the acceleration lane they will turn to the same degree of cut. The 50 degree will be closer to full turn than the 60.

Fortunately most roadways are designed that neither should need to go to full cut to make a well designed turn. Older narrower roads may be encountered that will be more difficult, however, in that case it is likely that either cut will have to cross into oncoming lanes to successfully make the turn.
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Old 10-03-2014, 11:59 AM   #14
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thanks so much for the help. There is so much to learn and it can get frustrating at times.
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