What tire pressure are you guys running in 850s on a 180?

There is an old thread on this, believe the consensus was 1 psi for every 100 lbs of loaded airplane weight works well on an 8.50 x 6.

Flynengr

I run 22-25 on my 185 (which I fly mostly empty). Did the same on my two previous 180's. 20-22 is on the "squishier" end for me.

I run about 20 psi in mine.

Running 25 psi on Super Hawks.

If I remember correctly the instructions for continued airworthiness (ICA) for the Kenmore Air Harbor STC which is the common approval for 850 x 6 tires on the 180 and 185 calls for an inflation pressure of 22 psi. I do not currently own an aircraft with this STC installed or i would verify that.

Tim

My buddy keeps the 8.50's on his 185 at 20-25.

The Kenmore Air STC I have for my 180 calls for 16 psi. I have run more but I like the lower setting... Makes the tires much softer and I have not had any issues with spinning the tires on the rim.

I run 15 grass 20 pavement on my 170 Goodyear 850 X 6

I just purchased the kenmore air stc for my 185, instructions say 15 for 180's and 18 for 185's.

Bill

I run 17 on my 180.

I guess I'm on the high side compared to everyone here. According to the Desser website you can run up to 30 psi. I typically have been running about 28, but I'm mostly on pavement and I find that I can barely drag my 180 in and out of the hangar if the tires are any softer. When I first installed them I had about 20 psi and I thought they felt really squishy. If I were running on grass or dirt all the time I'd probably run a bit softer than I am now.

Thanks for the feed back. I will be at gross weight most of the time and operating mostly on grass. I will try 23lbs first and adjust from there. Thanks againn for the info.

We run 20 psi in our 185. Our operations are about 50/50 paved/grass, with the airplane based at a paved strip.

I used to run the 850's on my C150/150TD at about 15 pounds, but that made the 180 too hard to pull into the hangar-- otherwise I'm sure 15 would work fine.

I find 19 Psi to be just right. just kidding, but I do make sure they're the same on both sides, and I've never had them above 20 psi.

Sorry if this is a hijack, curious how much wait is on a single main on a 180 roughly? For my purpose doesnt really matter at what weight as long as you can approximate. Say 800 at 1800lbs? Thats wrong but the kind of info im after. Trying to get a feel for floatation on my mine versus other planes. Just ignore and ill start another thread, but only really need one response. thanks

Do you have a set of W&B sheets that show the weights at each wheel? A nosedragger is pretty much in the level (as in weighed at) attitude when it's just setting there on all three.

I've been thinking of getting a set of those Desser 850 smoothies when I need tires-- I wonder if being 4-ply they might be a little cushier than a 6-ply with the same inflation pressure?

I just had mine on the scales. Don't have the numbers w me but was close to 600 on main, 5 on the nose. Just wondering how much heavier a 180 is. Probably about a hundred, one fifty guessing. Think I'm going to try the 4plys next. Rides pretty smooth light at 12lbs on the 6plys but started to slip just a tad. Think 14lbs on 4plys

SKYLANEDAVE wrote:... was close to 600 on main, 5 on the nose. Just wondering how much heavier a 180 is. Probably about a hundred, one fifty guessing.....

Why would you guess that a 180 is heavier than your 182A? My 1953 180 is on the heavy side for an early one, and it comes in at about 1665 with oil but no fuel-- a bit less than what you figure your 182A weighs.