Hi, I want to install piano hinge for my cowling installation. Can someone share with me the specific part number for the piano hinge? I believe it is MS20257 but I don't know what width or thickness is. Also, how much length does one need? Zenith has changed their Builders Resources page since I last looked and I can't find anything. 

Views: 343

Reply to This

Replies to This Discussion

Hi Steven, you will need Aircraft Spruce #MS20001P4 hinge. Just look for the most expensive one ($74.75) is what I paid. 

You want the extruded hinge… Choose a wide one, so you’ll have adequate edge distance on both sides. I think I went with 1.5 inch. But I’d have to measure to be sure.  

Hey Steven, 

The part number that John mentioned below I believe is correct. Usually 9 ft is needed, but you can only buy in 6 ft sections, so it can get pricey. We do have these kits available, (9ft sections 3x3) and they come with undersized hinge pins if you can't find what you are looking for. 


Thank you very much for the replies! Getting ready to order and get started. 

Been there done that, but……. If you have to open the cowl often ( and who doesn’t) you will find out that aligning the cowl halves can be a pain to do when putting it back on. So…. On the next plane I installed the quarter turn fasteners, much happier but that is why it is called experimental

harmen. ( 701 with piano hinge and cruzer with quarter turn fasteners)

I got mine from AC Spruce...

Qty Ship B/O Item Unit Price Total Price
2 2 0 03-00053-3 PIANO HINGE 3 FT # MS20001P4 28.825 57.65
1 1 0 03-00054-3 PIANO HINGE 3 FT # MS20001P5 35.875 35.88
Subtotal: USD 93.53


New from Zenith:

Zenith Planes For Sale 

Classified listing for buying or selling your Zenith building or flying related stuff...

Custom Instrument Panels
for your Zenith

Custom instrument panels are now available directly from Zenith Aircraft Company exclusively for Zenith builders and owners. Pre-cut panel, Dynon and Garmin avionics, and more.

Zenith Homecoming Tee:

Zenair Floats

Flying On Your Own Wings:
A Complete Guide to Understanding Light Airplane Design, by Chris Heintz

Builder & Pilot Supplies:

Aircraft Insurance:


West Coast USA:

Pro Builder Assistance:


Transition training:

Lavion Aero

K&S Aviation Services

Aircraft Spruce & Specialty for all your building and pilot supplies!

How to videos from HomebuiltHELP.com

Developed specifically for Zenith builders (by a builder) these videos on DVD are a great help in building your own kit plane by providing practical hands-on construction information. Visit HomebuiltHelp.com for the latest DVD titles.

© 2024   Created by Zenith.Aero.   Powered by

Badges  |  Report an Issue  |  Terms of Service