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Old 08-04-2017, 12:45 PM
Berchmans Berchmans is offline
Join Date: Nov 2009
Location: Anchorage, Alaska
Posts: 419
Default Bigger tires for rougher airports

Has anyone out there put RV10 main gear tires and wheel pants on an RV8?
Burke Wick
Flying RV 8
Anchorage, Alaska
VAF Dues Paid for 2019
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Old 08-04-2017, 01:10 PM
scsmith scsmith is offline
Join Date: Jan 2008
Location: Ashland, OR
Posts: 1,955
Default 380-150-15

For improving the soft-field capabilities of your RV-8, try 380/150-15 tires. They are about an inch bigger in diameter and about an inch wider than 500-5, but they fit on the standard 5" wheels.

With a little advance planning, they fit in the standard wheel pants. I mounted my wheel pants about a half-inch higher than the plans and instructions.This caused a minor interference with the brake caliper, which I remedied with a fiberglass blister fairing.

Of course the tire clearance cut-out in the wheel pants needs to be increased appropriately.

But the bigger 380/150-15 tires make a MARKED improvement in handling on soft surfaces. You can search for it here and see much other discussion on them.
Steve Smith
Aeronautical Engineer
RV-8 N825RV
IO-360 A1A
WW 200RV
"The Magic Carpet"
Hobbs 525 in 9 years (would have flown more this year if not for fire smoke)
also LS-6-15/18 sailplane
VAF donation Jan 2019
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Old 07-23-2018, 12:05 PM
Huskyhipdoc Huskyhipdoc is offline
Join Date: Feb 2018
Location: Cornwall, UK
Posts: 12
Default 600x6 wheels

I’ve fitted Grove 600x6 wheels on their 1 1/4 axle with Grove Brakes. Michelin Air tyres are 17.5” diameter and fit well I’m Sam James pants (600x6 pants from RV10)
Flyboy have a new tail wheel with a bigger inflatable tyre (Condor) that I’m also going to use.
I’ve scaled up the wheels pants on photoshop to reflect the appearance and it’s barely fact I think they look better! I have Goodyear 26” on my current plane though, so I’m used to bigger tyres.
Will need to see if he larger mass on the end of the Grove gear induces any flutter...
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Old 07-23-2018, 03:21 PM
Ron B. Ron B. is offline
Join Date: Nov 2007
Location: Yarmouth, Nova Scotia
Posts: 2,249

Agree with the benefits of the 380-150-15 tires. Put mine on last year and when my grass strip is soft I can taxi thru much easier.
Thanks Ron
RV-14 Flying
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Old 07-23-2018, 03:31 PM
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humptybump humptybump is offline
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 3,087

If you want to avoid changing your wheels, brakes, and axles, then the 380/15's are a good middle ground. They are notably bigger than 500x5 but not as big as 600x6.

One caution, if your wheelpants were installed with tight tolerances, the 380/15's May rub inside the wheel pant at the top or back.

I was reasonable fortunate and had internal clearances for the 380/15 tyres. I did need to increase the bottom opening a bit with a grinder and sanding block for the tyres.
- Glen, ESVA
RV-8 FP IFR | Track my RV-8 | 53VG

Last edited by humptybump : 07-24-2018 at 01:29 AM.
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Old 07-23-2018, 07:32 PM
jdmunzell jdmunzell is offline
Join Date: Jun 2005
Location: Hamilton, VA
Posts: 415
Default Pics?

anybody got pics of this configuration on the -8?
-8 wings, finishing up
-8 QB Fuse just arrived!!!
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Old 07-25-2018, 03:15 AM
Huskyhipdoc Huskyhipdoc is offline
Join Date: Feb 2018
Location: Cornwall, UK
Posts: 12

Does anyone have better ideas for routing the brake pipe? This seems the shortest, 'least loopy' way that will still allow for removal of the brake calliper without taking the pants/wheel off. The front half of the James pants are fixed to the axle rather than the rear.
Wasnt keen on the brake pipe dangling beneath the pants, and at risk of being damaged by rough ground.

Last edited by Huskyhipdoc : 07-25-2018 at 03:24 AM.
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