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  #1  
Old 03-10-2021, 07:49 PM
RV-4 RV-4 is offline
 
Join Date: Oct 2007
Location: St-Jerome,Quebec,Canada
Posts: 1,169
Question James Wheel Pants on a RV-4

Hi everyone

I've got the old style wheel pants on my RV-4 and I've been thinking about replacing them with the Sam James wheel pants.

My question is for those of us here who have installed them on how hard are they to install and is it worth the 25-30 hrs of work just to get 3-4 knots...

If anyone has pictures of their install it will be nice to have a look at them.

I've looked at the pressure recovery wheels pants from Vans but find them too bulky on a short gear -4.

Thank you for your imputs.

Bruno
rv4@videotron.ca
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  #2  
Old 03-10-2021, 11:06 PM
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Nick Nick is offline
 
Join Date: May 2007
Location: Rosharon, TX
Posts: 157
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Fairly sure the speed with James or Vans PR pants will be pretty close to identical. Both should give you 3-4 Ktas. I did Vans pants so I could do 380 tires. Short geared -4, no regrets.
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  #3  
Old 03-11-2021, 10:07 AM
andoman andoman is offline
 
Join Date: Jul 2006
Location: Payson, AZ
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I’ll also be upgrading to Vans’ pants and 380 tires on my short gear -4.
I have a 72 in CS prop...
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  #4  
Old 03-11-2021, 02:07 PM
dmat dmat is offline
 
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Location: Union County, NJ
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Can someone explain to me what the 380 tire is?

Thanks,
D
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  #5  
Old 03-11-2021, 04:24 PM
FinnFlyer FinnFlyer is offline
 
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Location: Bell, FL
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Do they actually give 3-4 knots above the original RV-3/4 pants (VA-108)?

Finn
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  #6  
Old 03-11-2021, 04:45 PM
David Paule David Paule is offline
 
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Location: Boulder, CO
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Quote:
Originally Posted by dmat View Post
Can someone explain to me what the 380 tire is?

Thanks,
D
It's an oversize tire. See this thread.

Dave
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  #7  
Old 03-11-2021, 06:11 PM
RV-4 RV-4 is offline
 
Join Date: Oct 2007
Location: St-Jerome,Quebec,Canada
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Thumbs up James Wheel Pants on a RV-4

Hi Gents

Thank you for the reply.

The speed increase is what I was expecting.

Anyone of you have pictures you could post or send me so that I can have an idea how they look installed and how low to the ground you cut them??

Thanks

Bruno
rv4@videotron.ca
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  #8  
Old 03-11-2021, 07:59 PM
dmat dmat is offline
 
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Location: Union County, NJ
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Thanks Dave!

Quote:
Originally Posted by David Paule View Post
It's an oversize tire. See this thread.

Dave
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RV6: Restoration underway. Looking for G3x Parts....

WTB RV4/8?- Looking for a 4 or 8 that needs some love and TLC. PM me if you have one!

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  #9  
Old 03-13-2021, 11:51 AM
riobison riobison is offline
 
Join Date: Jul 2011
Location: Oliver BC & Red Deer Alberta Canada
Posts: 380
Default over size tires and wheel pants

I have the 380's on my RV4 now and I'm 1/2 way through the process of installing Vans PR wheel pants.

I initially installed as per the instructions for 1" above the tire but found out it that I was cutting away too much wheel pant to get 1/2"+ clearance on the sides. It was suggested here on the forum to go with 1/2" clearance with the over sized tires on the Top, and that seems to be working well with getting proper clearance on the sides.

For the holes on the U-808 bracket I was able to make my marks for the holes with dabs of paint on a Q tip with the fuzzy cut off. Worked well.

The other holes were marked with using a láser lever with + marking the spot.

What I did find out in using new hydraulic jacks that there is a small amount of bleed down in the time I would line up the láser with the bracket to the time that i had the wheel pant mounted and ready to drill the hole that I would be out 1/2 hole. I would suggest with hydraulic jacks to have a clamp on the ram to prevent this from happening. I worked through it but it was a pain and if I was to due it in the future that is what I would do.

20 or 30 hours? Not in my case but that is me. I'm all ready double that and still need to finish them.

Tim
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  #10  
Old 03-14-2021, 10:10 AM
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AX-O AX-O is offline
 
Join Date: Jun 2005
Location: SoCal
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Quote:
Originally Posted by RV-4 View Post
If anyone has pictures of their install it will be nice to have a look at them.

rv4@videotron.ca
Click on the links in my signature below. One takes you to my build log on VAF and the other to the rest of my pics in Google. There is a section for wheel pants under "landing Gear".
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The information that I post is just that; information and my own personal experiences. You need to weight out the pros and cons and make up your own mind/decisions. The pictures posted may not show the final stage or configuration. Build at your own risk.
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