The International Cessna^® 170 Association

Good day Gentlemen, Does any one know if the wings from a Cessna 172A are interchangeable with a Cessna 170B?
Thank you
Ben

They are but I believe the part numbers are not the same so paperwork is still needed to install
If you need wings, I have a set of 170B wings in Pittsburgh that need the tops re-skinned due to hail damage.

Ben,
The p/n for the right wing on the 170B and 172A is the same: 0523005-1. This has been superseded to 0523005-200 and then again to 0523005-214. The left wing on the C-170B is p/n 0523005, revised to 0523005-58 on Jan. 27, 1995. The left 172A is also 0523005-58, superseded to 0523005-201. The primary difference is the fuel vent on the left wing. Del also mentions differing locations of the door stops. The applicable discussion regarding this is found here.

Aryana wrote:Struts are probably different.

Why would that be?

Dihedral would be my guess.

Prior to s/n 26039 Cessna used Hi-Shear rivets to install the 170B strut fittings but this didn't change the part number. The numbers were revised in 1995 from 0523606-10 to -12 for the left and 0523606-11 to -13 for right. These revised numbers coincide with the 172 struts through 1961.

always amazed by the knowledge here and learn every time i visit... i read so much more than i'm able to offer unfortunately.

thank you.

hilltop170 wrote:Dihedral would be my guess.

So, what are the dihedrals of the two airplanes?

No dihedral in the wing of any A model. That is why they got the nickname "Flat wing" From our archives. . . http://www.cessna170.org/info.html

" " "Beginning very late in 1948 with SN18730, Cessna began producing the all-metal, slicked-up version with a single strut and a dorsal fin identical to the one used on the C195. The price new was $5,995, and it was called the Model 170A. The plane had an all-metal wing with slightly larger flaps which ran from zero to 50 degrees. The 170A, which was produced through 1951, is commonly called the “straight wing” model because, unlike later 170Bs, the C170A has no wing dihedral. There were very few changes made in the C170A in it’s three years of production.
The dihedral angle was increased to 3 degrees on the 1952 and all subsequent models, and more twist was given to the wing between the strut and the tip. The stabilizer and elevator shape was changed and the aerodynamic balance area was increased. A mass balance, enclosed in the aerodynamic balance section, was added, requiring less control pressure." " "

The struts and wings are markedly different so unless you want to re-engineer the plane just to get the big flaps and dihedral and according to the FAA, you are looking at major airframe modification, you will probably want to stay with the "split edged flap, flat wing A model's original design.

Good catch John.

Yes, I read 170A instead of 172A.

Dihedral would be the same between the 172A and 170B.

Aryana wrote:What's a 172?

I'm biting my tounge as only unflattering adjectives come to mind.

We've got some serious thread drift going here but the title is pretty generic so maybe someone could settle this dihedral question by measuring their 170B. Is the dihedral 1° 44' or 3°? Do you think they are referring to the dihedral of a single wing rather than the combined dihedral of both wings? I'm confused.

The rigging information has been published and republished so many times that some error may have crept into the dialog.

According to several sources I have, the wing TWIST is 3-degrees in the B-model, and 1-degree in the A model. The wing dihedral has often been quoted as 3-degrees and I wonder if the data hasn't been transposed from the twist data, as I have a source that quotes the dihedral listed for B-models at 2-degrees, 8-minutes..... (I guess I've got a new mission now....)

Thanks again guys!!! I think it may just be easier to disassemble my wings and clean them , They are all straight but the surface corrosion under the skin really bugs me.

n2582d wrote:

Aryana wrote:What's a 172?

I'm biting my tounge as only unflattering adjectives come to mind.

We've got some serious thread drift going here but the title is pretty generic so maybe someone could settle this dihedral question by measuring their 170B. Is the dihedral 1° 44' or 3°? Do you think they are referring to the dihedral of a single wing rather than the combined dihedral of both wings? I'm confused.

IMG_0257.JPG

My original intent is to remove my wings off of my 170B that have been damaged from transportation and surface corrosion with a pair of 172A model wings I have that are in immaculate condition. I have "heard" in the either that they are interchangeable. I know the FAA FISDO's have been less and less willing to put there necks on the lines with feild aprovals. There are several parts in the wings that are the same part numbers from the 170 and 172 but the last 1/4 or so of the wings have fidderent ribs and skins. I know the 170B had metal wing tips and the 172A had plastic. I spoke with Cessna and they gave a letter that gives a general guideline with wing replacement. Stating they they need to be of the same gross weight, dihedral, lap and fuel system. And a few other items. It was a general letter not naming any specific airplane.
I hope this clarifies my question. Thank you again guys!! I hope to be at the upcoming 170 fly in at French valley. The plane won't be ready but I'll do my best to go.

Ben