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05-23-2007, 11:33 AM
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#1
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Senior Member
Join Date: May 2007
Location: San Diego, CA
Posts: 989
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True Turning Radius Measurements
One of several reasons people list to go with the Sportsmobile 4x4 conversion instead of the Quigley conversion is the greatly improved turning radius. However, I'm having trouble finding out what these actually are. My questions/impressions are for a Ford RB van.
It appears that the Quigley 4x4 turning radius is 56'.
I've heard two different numbers for the Sportsmobile turning radius: 39' and 49'. There is obviously a large difference between the two.
Does anyone know which SMB number is correct? Also, if it is 49', then there is a difference between the SMB and Quigley, but not as dynamic as I've been led to believe. Does the 7' really make that much of a difference?
__________________
2007 Ford RB Diesel SMB 4x4 Pueblo Gold; Custom configuration (aisle layout); PIAA 580 driving lights; Picked up on Oct 19, 2007.
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05-23-2007, 05:49 PM
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#2
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Junior Member
Join Date: Apr 2007
Location: Las Vegas, NV
Posts: 7
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I do not actually have a measurement, but I did test drive one and Jonathan told me that it was 39' for the SMB conversion. I now have a quigley and really wish I would have gotten the smb just for the tighter turning.
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05-23-2007, 06:54 PM
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#3
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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SMB used to list 39' curb to curb on their web site. I spent a lot of time with them as they weren't able to get that in real life. The 39' was a typo and it is actually 49'. Their web site now lists it as 49'.
In my opinion, the seven feet is worth it. Depending on how you use your van. My last van, that I built up myself, did have a 39'-6" curb to curb. My SMB will be down close to that when I get back home and work on it. Can't turn too tight, stop too quickly or have too much money....
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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05-24-2007, 10:32 AM
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#4
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Senior Member
Join Date: Apr 2007
Location: Santa Barbara, CA
Posts: 1,841
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That would be a 19.5 foot radius. Curb to curb is a diametral measurement.
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05-24-2007, 06:00 PM
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#5
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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That would be correct. Curb to curb seems to be what everyone really either means or measures and is what SMB quotes on their web site.
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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05-24-2007, 07:02 PM
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#6
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Senior Member
Join Date: Apr 2007
Location: Santa Barbara, CA
Posts: 1,841
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I know we all knew that. It's just the wording. I'm an engineer. Forgive me.
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05-24-2007, 10:23 PM
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#7
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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I can relate to the problem - I'm an engineer too. Just retired.
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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07-29-2007, 05:24 PM
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#8
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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Well, I've got my curb to curb down to 45' and that's all I'll be able to get. This is with the 315 tires. I made up a new pitman arm and the restriction to a tighter turn is that my tires are rubbing on the sway bar. The only way to go tighter is to remove the sway bar, go with smaller tires, or more offset to the rims. None of the above is acceptable to me, so I'll be living with the 45 feet. Not too bad.
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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07-29-2007, 06:52 PM
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#9
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Senior Member
Join Date: Apr 2007
Location: Parker, CO
Posts: 7,643
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You forgot rear steering.
__________________
it was good to be back
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07-30-2007, 07:57 AM
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#10
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Senior Member
Join Date: Apr 2007
Location: Blairsden, CA (when not on the road)
Posts: 1,109
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Jeez Jage, you really want to give me a project don't you....
__________________
Scatter
You can be anything you want on the Internet,
it amazes me that so many choose stupid....
2007 RB50, 6.0
K1WGB
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