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04-11-2017, 01:48 PM
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Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 746
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Questions....
This weekend I installed the said 380/150 15 tires by Aero Classic.
I have Van's stock Matco wheels and brakes, and new pads.
I tried installing with no spacing washers between the wheel and rotor and the brake caliber touched the rubber. With two standard washers I now have about 3/16 to 1/4" clearance. I did not note how much clearance there was with the old stock tires. It must have been about the same?
What clearance do you have???
As the pads wear the spacing will get better, I assume.
Also the caliber just touches the inside of the wheel pant. Do you think this will cause problems more than the obvious wear of both parts????
__________________
Bruce, Katie, Hana and RV-8 HulaGirl
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04-12-2017, 11:08 AM
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Join Date: May 2013
Location: Sherman, CT
Posts: 794
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I'm glad this BIG TIRE post came up. I had the stock 500X5's on my six and they were adequate, but I always yearned for a larger tire for grass strips and frozen lakes. I haven't fitted my wheel pants yet on my 7, so I thought I would give the 380X150-5's a try. Regarding tire pressure, what PSI are you guys running with this setup? I found with my six that a higher tire pressure all but eliminated the shimmey problem. Figure I'll go with the Michelin's and have them dynamically balanced and see how it goes.
Jake
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Jake
RV6 #20477 completed 1991 sold.
RV7 #72018 N767T first flight 11/21/2017 350+ hrs.
IO-360M1B MT 3 blade, Dual AFS 5600 QUICK Panel.
Manual Flaps. (KOXC)Oxford, CT, (0NY0)North Creek, NY.
1941 J3 Cub skis,floats.
2020 dues gladly paid.
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04-14-2017, 11:01 AM
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Join Date: Jan 2005
Location: TX32
Posts: 1,891
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Clearance to move about the country...
Quote:
Originally Posted by BruceEicher
This weekend I installed the said 380/150 15 tires by Aero Classic.
I have Van's stock Matco wheels and brakes, and new pads.
I tried installing with no spacing washers between the wheel and rotor and the brake caliber touched the rubber. With two standard washers I now have about 3/16 to 1/4" clearance. I did not note how much clearance there was with the old stock tires. It must have been about the same?
What clearance do you have???
As the pads wear the spacing will get better, I assume.
Also the caliber just touches the inside of the wheel pant. Do you think this will cause problems more than the obvious wear of both parts????
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Bruce,
I was a Big Tire "Beta Tester" having installed 380's on my Rocket and later my RV4 back in 2008. I purchased them after reading Steve Sampson's construction blog of his masterpiece RV4, G-IKON.
Cleveland wheels have close tolerance as well and I installed washers to allow for clearance as you did. I trimmed my wheel pants accordingly to increase clearance. I didn't notice any speed loss.
You're going to like the change however, especially if you operate primarily on soft turf or grass. Operating my Rocket from my home strip at the time "The Swamp" was a quantum leap better in ground handling especially during rainy season in FL (all summer)
http://www.vansairforce.com/communit...hwheels+Rocket
Here is a thread with more info...
V/R
Smokey
Last edited by smokyray : 04-14-2017 at 11:05 AM.
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04-14-2017, 06:48 PM
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Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 746
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Thanks Smokey! I'll let you know how it works, or watch for me in the news! 
__________________
Bruce, Katie, Hana and RV-8 HulaGirl
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04-14-2017, 10:44 PM
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Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 746
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Twice the ground clearance without raising the pant, photo taken with tail wheel on the floor.
More contact patch...

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Bruce, Katie, Hana and RV-8 HulaGirl
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05-11-2017, 10:48 AM
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Join Date: Jun 2010
Location: Bristol, UK.
Posts: 203
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Quote:
Originally Posted by BruceEicher
Thanks Smokey! I'll let you know how it works, or watch for me in the news! 
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Bruce, any more updates since you started running the bigger tyres on the Matco wheels? Any touch issues with tyre to sidewall?
Cheers,
Ed.
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Ed.
RV-3B G-CCTG - Purchased May 2020
RV-8 G-MIRV - First flight 1 July 2019
RV-6 G-BZRV - Flown the nest.
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05-11-2017, 10:59 AM
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Join Date: Sep 2016
Location: Joseph, Oregon
Posts: 561
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Quote:
Originally Posted by smokyray
Bruce,
I was a Big Tire "Beta Tester" having installed 380's on my Rocket and later my RV4 back in 2008. I purchased them after reading Steve Sampson's construction blog of his masterpiece RV4, G-IKON.
Cleveland wheels have close tolerance as well and I installed washers to allow for clearance as you did. I trimmed my wheel pants accordingly to increase clearance. I didn't notice any speed loss.
You're going to like the change however, especially if you operate primarily on soft turf or grass. Operating my Rocket from my home strip at the time "The Swamp" was a quantum leap better in ground handling especially during rainy season in FL (all summer)
http://www.vansairforce.com/communit...hwheels+Rocket
Here is a thread with more info...
V/R
Smokey
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Thanks for the info Smokey...
The photos from that 2008 post are not showing up...any chance of reposting those photos or updating the old post?
__________________
Michael Fleming
Joseph, OR
sagriver at icloud dot com
RV-7 Slider #74572
Started 11/2016
Empennage completed 11/2016 (sans fiberglass)
Ailerons and flaps completed 3/2017.
Wings completed 12/2017
Started on QB fuselage 01/2018
Donated for 2020 and so should you
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05-11-2017, 11:11 AM
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Join Date: Feb 2012
Location: Wilsonville/Aurora KUAO Oregon
Posts: 746
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Quote:
Originally Posted by EdH
Bruce, any more updates since you started running the bigger tyres on the Matco wheels? Any touch issues with tyre to sidewall?
Cheers,
Ed.
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So far so good! A dozen or so TO's and Landings, with a couple on plush green, wet grass. Handles just fine. I did cut a small hole in the inside of the pants for clearance of the lower rear caliper bolt. It was touching the pant. I need to make a small bubble to cover it, right now it has some duct tape.  . My pants are vinyl covered, so the patch will be easy.
And a couple cross country flights showed no noticeable speed loss.
__________________
Bruce, Katie, Hana and RV-8 HulaGirl
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10-30-2017, 07:47 PM
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Join Date: Nov 2012
Location: Launceston, Tasmania, Australia
Posts: 774
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I just mounted my 380x150-5's and they look great. Does anyone have a recommended tire pressure that I should be running in these?
Cheers,
Tom.
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10-30-2017, 08:05 PM
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Join Date: Sep 2007
Location: BC
Posts: 1,674
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I had shimmy above 35PSI. 25-30 seems to work good for me. At 20 PSI they started to look flat.
Bevan
__________________
RV7A Flying since 2015
O-360-A1F6 (parallel valve) 180HP
Dual P-mags
Precision F.I. with AP purge valve
Vinyl Wrapped Exterior
Grand Rapids EFIS
Located in western Canada
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