850s

cfiipilot · Post by **cfiipilot** » Thu Oct 10, 2013 8:56 am

Those that are running 850 tires what pressures are you using? Same pressures for pavement as grass?

rjb · Post by **rjb** » Thu Oct 10, 2013 9:05 am

25 lbs for pavement

maules.com · Post by **maules.com** » Thu Oct 10, 2013 12:21 pm

Visually, ballpark, the outer groove is bridged by the tarmac/concrete, ie the outer rib is just touching but not all the outer rib in contact.

bobguhr · Post by **bobguhr** » Thu Oct 10, 2013 12:36 pm

18 psi puts mine within Jeremy's eyeball spec. I've been running 18 for about a year now pavement and turf

aero101 · Post by **aero101** » Thu Oct 10, 2013 2:34 pm

And 18 PSI is about the lower limit with tube type tires... Much lower and under hard braking, tire bead will slip, pulling valve core out of tube, and makes for an exciting handful if in any kind of confined area....

maules.com · Post by **maules.com** » Thu Oct 10, 2013 2:49 pm

Its odd how I sometimes see hubcap screws helping tyrespin control.

aero101 · Post by **aero101** » Thu Oct 10, 2013 4:26 pm

Yes, can sure tell you've spent some time up here Jeremy, Ha! Ha!

bobguhr · Post by **bobguhr** » Thu Oct 10, 2013 5:20 pm

I put a match mark between tire bead and wheel, 150 hrs no slipping even with hard braking although I do have single puck brakes limiting my brake power and I do keep an eye on the pressure

Wyflyer · Post by **Wyflyer** » Fri Oct 11, 2013 4:46 am

23 lbs, with single puck brakes and no shims

Andy Young · Post by **Andy Young** » Fri Oct 11, 2013 7:32 am

18 pounds, with single-puck brakes. When I had them on a Scout, with double-puck brakes, I ran at 20 pounds. Never a problem in either case.

bobguhr · Post by **bobguhr** » Fri Oct 11, 2013 8:28 am

Forgot to mention I do have shims installed at 18 pounds

cfiipilot · Post by **cfiipilot** » Fri Oct 11, 2013 12:54 pm

Thanks everyone. I may need more info pm'd about the hubcap screws technique

aero101 · Post by **aero101** » Fri Oct 11, 2013 2:05 pm

cfiipilot wrote:Thanks everyone. I may need more info pm'd about the hubcap screws technique

Done!!

cfiipilot · Post by **cfiipilot** » Fri Oct 11, 2013 5:56 pm

aero101 wrote:
cfiipilot wrote:Thanks everyone. I may need more info pm'd about the hubcap screws technique
Done!!

Got it! Thanks.

VH-MEU · Post by **VH-MEU** » Sat Feb 15, 2020 4:04 pm

Hi everyone, I've just had a valve stem tear due to slight tyre slip. It's the first time I've experienced this & fortunately, the tyre didn't deflate immediately. I found it flat a couple of days later. NB: Normally run main tyre pressure at around 18-20 psi (single puck brakes) & last landing was off-airport on bitumen with hard braking!
I'm in the process of swapping 8.50 tyres due to landing gear setup tapper edge wear and replacing both tubes as the old ones would be at least 10 yrs old. My question to the form is any suggestions on prevention of tyre slip other than higher tyre pressure or screws into the tyre bead. All the best, Paul

850s

850s

Tyre Slip re: 8:50

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