Backcountry Pilot • C150 (tail drag) STC for 8.5x6

C150 (tail drag) STC for 8.5x6

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C150 (tail drag) STC for 8.5x6

Anyone know if an STC exists to run 8.5x6 tires on a C150? Im installing on a TW conversion.

Thx-

Greg-
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Re: C150 (tail drag) STC for 8.5x6

Possibly completely useless information. It could have been a field approval, but the last time I was in Lake Placid there was a 150 trike with them. Not sure if it was based there or not. Looked good.

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Re: C150 (tail drag) STC for 8.5x6

There is a 150 tail wheel on my field .will look at it tomorrow see what tires
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Re: C150 (tail drag) STC for 8.5x6

Thx. I know I can run bushwheels, but was wondering if an STC existed for the Dessers.
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Re: C150 (tail drag) STC for 8.5x6

There aren't many approvals for 8.50 tires on any airplane out there, unfortunately. I suspect many/most you see are "don't ask, don't tell".
I couldn't find any approvals for a C-175, except for Airglas' STC for a nose fork....since my 175 no longer has a nose fork, that didn't seem like a plan.
I bought Airframes (or whatever they're called this week) 10x10 wheels, which are STC'd for the 175 and mounted 8.50x10. Never looked back.
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Re: C150 (tail drag) STC for 8.5x6

My Pacer has a field approval for 8.50s. My mechanic Brian just got a field approval for Mike on his 140 for 8.50s. Both follow-ons I imagine. It was pretty quick. Depends on your FSDO or ASO’s workload I imagine.
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Re: C150 (tail drag) STC for 8.5x6

It doesn't help you now, but IMHO David Lowe dropped the ball if he didn't include approval for 850x6 tires as part of his 150 taildragger stc.
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Re: C150 (tail drag) STC for 8.5x6

hotrod180 wrote:It doesn't help you now, but IMHO David Lowe dropped the ball if he didn't include approval for 850x6 tires as part of his 150 taildragger stc.


Is it common for a tailwheel conversion STC to include tires?
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Re: C150 (tail drag) STC for 8.5x6

If no STC currently exists, there should be no problems obtaining a field approval on something as benign as 8.50’s.

I had no problem obtaining field approvals for 26” GY’s on our 180 and 29” tires on our Beaver. It was a straightforward process with documented flight tests required at forward and aft limits of the CG envelope.

Full disclosure, this was accomplished through the Fairbanks FSDO. Should be no different any place else in the country as the FAA is “standardized” throughout the nation :roll:

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Re: C150 (tail drag) STC for 8.5x6

TR wrote:If no STC currently exists, there should be no problems obtaining a field approval on something as benign as 8.50’s.

I had no problem obtaining field approvals for 26” GY’s on our 180 and 29” tires on our Beaver. It was a straightforward process with documented flight tests required at forward and aft limits of the CG envelope.

Full disclosure, this was accomplished through the Fairbanks FSDO. Should be no different any place else in the country as the FAA is “standardized” throughout the nation :roll:

TR


Now, that is funny, right there...... Fairbanks and Minneapolis are the only FSDOs I've got field approvals through. Both good to work with, or used to be, anyway.
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Re: C150 (tail drag) STC for 8.5x6

I thought I was the only one who had trouble getting one-time STC mods approved. For me, it’s been like pulling your own teeth without a door or string!
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Re: C150 (tail drag) STC for 8.5x6

Bigrenna wrote:Anyone know if an STC exists to run 8.5x6 tires on a C150? Im installing on a TW conversion.

Thx-

Greg-


Apparently there is no STC, reading between the lines of responses.
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Re: C150 (tail drag) STC for 8.5x6

hotrod180 wrote:It doesn't help you now, but IMHO David Lowe dropped the ball if he didn't include approval for 850x6 tires as part of his 150 taildragger stc.


Yeah… nothing like all the STC‘s you’ve created over the years. LOL
Last edited by Bigrenna on Wed Oct 22, 2025 1:06 am, edited 1 time in total.
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Re: C150 (tail drag) STC for 8.5x6

Zzz wrote:Apparently there is no STC, reading between the lines of responses.


Yep, I figured there was nothing. Not interested in faffing about with field approvals… ordered a set of 26 inch Airstreak bush wheels. At only 20 pounds, they’re actually lighter than the Dessers… They’ll do nicely.
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Re: C150 (tail drag) STC for 8.5x6

Bigrenna wrote:
Zzz wrote:Apparently there is no STC, reading between the lines of responses.


Yep, I figured there was nothing. Not interested in faffing about with field approvals… ordered a set of 26 inch Airstreak bush wheels. At only 20 pounds, they’re actually lighter than the Dessers… They’ll do nicely.


I did find one potential lead in the FAA STC database: https://drs.faa.gov/browse/excelExterna ... 276EE.0001

I filtered by TC 3A19 with keyword "tire" and got 3 results. This Landes nose fork STC specifies mains up to 8.50. The only problem is you have to run a big nosewheel fork hahahaha. Tough to do on a tailwheel conversion but perhaps you can find a loophole. :wink:
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Re: C150 (tail drag) STC for 8.5x6

Zzz wrote:
Bigrenna wrote:
Zzz wrote:Apparently there is no STC, reading between the lines of responses.


Yep, I figured there was nothing. Not interested in faffing about with field approvals… ordered a set of 26 inch Airstreak bush wheels. At only 20 pounds, they’re actually lighter than the Dessers… They’ll do nicely.


I did find one potential lead in the FAA STC database: https://drs.faa.gov/browse/excelExterna ... 276EE.0001

I filtered by TC 3A19 with keyword "tire" and got 3 results. This Landes nose fork STC specifies mains up to 8.50. The only problem is you have to run a big nosewheel fork hahahaha. Tough to do on a tailwheel conversion but perhaps you can find a loophole. :wink:


That's where I came to looking for an approval for 8.50s on my 175: I could have bought the Airglas fork kit, and used that as approval for the 8.50s. Problem was, I've got a tailwheel converted plane, so it'd look a little silly with a nose fork, but no nose tire.....
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Re: C150 (tail drag) STC for 8.5x6

I am a DAR-T and I will do field approvals for 8.50 X 6 tires. Message me.
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