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Skywagons >> Airframe Ideas

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tmhiggins
Owner


Reged: 07/04/06
Posts: 63
Loc: Santa Rosa, CA
8.50x6 Tires and Cleveland wheels & brakes
      #7685 - 06/11/07 08:52 AM

I have a 1955 180. I need new tires soon and my Cleveland wheels need some help too (kit number 199-60). So in the process I'm thinking of going to 8.50x6 tires. My flying is more pavement than not, but the Idaho backcountry is only a 1 hour flight away, and I also want to take trips to Alaska in the future. Reading all the opinions, the 8.50x6 Goodyears seem like the sweet spot for me in terms of size and quality for the money.

After reading a bunch of stuff on this forum as well as backcountry.org and supercub.org, I think I've settled on the following:
1) 8.50 tire STC SA361NW from Kenmore Air Harbor
2) Cleveland kit number 199-62, STC SA63GL
3) 8.50x6 6 ply Goodyear Rib/Flight Special II tires
4) 850-6 Leakguard tube

All told, should set me back about $1700. For that I'll have brand new Cleveland wheels, brakes, and some bigger tires. I'm sticking with 3 bolt because I'm 2550 gross and they are approved on 185s, after all. I'm also not going with chrome (199-62C) since it's $300 more and I'm hangared.

I'd welcome any comments if I've missed something here, or I guess just any comments in general.

Thanks,

Tom


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Zenflyer
Owner


Reged: 01/27/06
Posts: 46
Loc: SW Michigan
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7688 - 06/11/07 09:54 AM

Tom,

Why 3 bolt over 6 bolt? I would strongly consider the 6 bolt if there isn't any disadvantage.
Kurt


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MannyPuerta
X-wind Expert


Reged: 08/10/06
Posts: 77
Loc: Alaska/Nevada
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7689 - 06/11/07 10:00 AM

I have 8.50's on Cleveland three-bolts via a field approval, and they are great. Since you only operate occasionally on unimproved strips, you could save yourself a lot of $$ and install 8.00's with only a logbook entry and a W&B change. The 8.00's should be listed as an option from Cessna, making it a simple and inexpensive change. The reality is that you won't notice any difference between 8.00's and 8.50's.

--------------------
Manny
ATP CFII
1971 A185E


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stewartb
addict


Reged: 10/20/03
Posts: 857
Loc: Alaska
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7694 - 06/11/07 11:43 AM

Your plan is a sound one. I have some 8.50s that I use when on hydraulic skis. I went with McCreary because that's what the local shop had on the shelf. I also use the 199-62 three bolt kit. I haven't had any indication that the wheels are deficient on my plane at 3190# using 29" Bushwheels.

Stewart


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tmhiggins
Owner


Reged: 07/04/06
Posts: 63
Loc: Santa Rosa, CA
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7699 - 06/12/07 06:26 PM

Thanks Stewart.

Kurt, the disadvantage of 6 bolt is about $300 and 2-3 lbs. The advantage is reduced likelihood of some kind of breakage? But I haven't run across any mention of problems on 3 bolt, and my 2550 lb 180 is much lighter than most 180/185s.

Manny, my thinking on 8.50s was that the Goodyear ones are about 4" larger diameter than most 8.00s. As for the Cleveland wheel replacement, I need to do that anyway due to some corrosion in the wheels. That's another topic, but I've read in several forums that this is pretty common with Clevelands, with suggestions to soak the felt in grease or some corrosion proofing compound prior to assembly, in order to prevent this.

As for not noticing a difference between 8.00 and 8.50--which 8.50 are you referring to? I know there is a couple inch variation between manufacturers. I've seen some other comments that it is a noticable difference on moderately rough strips.

Thanks for the tips...

Tom


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Zenflyer
Owner


Reged: 01/27/06
Posts: 46
Loc: SW Michigan
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7700 - 06/12/07 09:05 PM

Well Tom, you do have a point there....

Kurt


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MannyPuerta
X-wind Expert


Reged: 08/10/06
Posts: 77
Loc: Alaska/Nevada
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #7704 - 06/13/07 04:19 PM

>>Manny, my thinking on 8.50s was that the Goodyear ones are about 4" larger diameter than most 8.00s. As for the Cleveland wheel replacement, I need to do that anyway due to some corrosion in the wheels. That's another topic, but I've read in several forums that this is pretty common with Clevelands, with suggestions to soak the felt in grease or some corrosion proofing compound prior to assembly, in order to prevent this.<<

I use Goodyears only, and have never used anything else in the seven years we've had the airplane. One can oil or grease the felt. I haven't had any problems over the years with putting them in dry, and I usually operate in AK during the summer with rain and gravel and no hub caps.

>>As for not noticing a difference between 8.00 and 8.50--which 8.50 are you referring to? I know there is a couple inch variation between manufacturers. I've seen some other comments that it is a noticable difference on moderately rough strips.<<

Again, Goodyears. I run 20-26 PSI, and bounce between 20 and 23 during the summer on gravel strips. I'm not a gravel bar type and feel that if I need a bigger tire, I need a Super Cub. Also, anything bigger than an 8.50 will really cut into your IAS. I do long cross countries occasionally and don't want to take a speed hit when I really don't need anything bigger than what I have.

I suppose that if I were you I would go with 8.50's. They provide a bit more floatation and raise the prop a bit farher away from the rocks. It's only money, and Skywagons, like significant others, seem to respond favorably to rubbing money on them.


--------------------
Manny
ATP CFII
1971 A185E


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UT180
Owner


Reged: 08/09/07
Posts: 17
Loc: Utah
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #8161 - 09/20/07 03:03 PM

I realize this is an old post, but we are planning on installing 8.00 x 6's on our 1954 C180. You mention that 8.00's can be installed with logbook entry and W&B only, which was my assumption as well. In the POH it only mentions 6.00's and no mention of tires on the TCDS (http://www.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/417858c7f90969f7862572430064d352/$FILE/5A6.pdf).

Just wondering how I know what tires are approved without an STC?

Brent


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snj5
Owner


Reged: 07/10/06
Posts: 41
Loc: Kent, Washington State
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: ]
      #8162 - 09/20/07 04:12 PM

You're right. I moved up from a C-170B to an early 180, and while the TCDS for the 170 spells out 600x6, 700x6 and 800x6 tires, the TCDS for the 180 does not. I've always wondered whether or not that was a faux pas by Cessna (they forgot to list the tire sizes approved for the 180) or if it was intentionally left off the TCDS for the 180 for some reason....(???)

Does the POH constitute "approved data" with respect to tires?

What tires do the Cleveland Wheel STC you have specify (if anything)?

I suppose one could opine that since Cessna forgot to specify what tire sizes were approved on the TCDS, you
can use whatever size you want... 8^)


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lnagy
Owner


Reged: 01/24/07
Posts: 144
Loc: San Jose, Ca, Usa
Re: 8.50x6 Tires and Cleveland wheels & brakes [Re: snj5]
      #8981 - 02/25/08 02:29 AM

What is the past number for the 6 bolt wheels? Can't see to find it anywhere. I am assuming 199-60 is six bolt and 199-62 is the three bolt????

Les


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The International 180-185 Club does not review, endorse, nor necessarily agree with anything posted on this Forum. No warranty is provided in regards to the legality of any aircraft modifications, nor for your personal pilot skills in performing any maneuver, including landings.