• Welcome aboard HomebuiltAirplanes.com, your destination for connecting with a thriving community of more than 10,000 active members, all passionate about home-built aviation. Dive into our comprehensive repository of knowledge, exchange technical insights, arrange get-togethers, and trade aircrafts/parts with like-minded enthusiasts. Unearth a wide-ranging collection of general and kit plane aviation subjects, enriched with engaging imagery, in-depth technical manuals, and rare archives.

    For a nominal fee of $99.99/year or $12.99/month, you can immerse yourself in this dynamic community and unparalleled treasure-trove of aviation knowledge.

    Embark on your journey now!

    Click Here to Become a Premium Member and Experience Homebuilt Airplanes to the Fullest!

How to Check Crank Flange Runout

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

wsimpso1

Super Moderator
Staff member
Joined
Oct 18, 2003
Messages
11,353
Location
Saline Michigan
OK, it has gotten to the point of actually examining an engine and I need a little help.

I am in the dark on how we anchor a dial indicator to the crankcase and then spin the crank to check crank runout and axial endplay. I can imagine and invent methods, but if there are standard ways of doing so, I would rather do it the standard way.

A magnetic mount won't grab the aluminum case. Perhaps a steel fixture is fabbed up and bolted to the existing bosses? And the engine without a prop on the flange seems to make turning the engine difficult. Engine in question is a Lycoming IO-360.

So, please explain the process and pieces for this newbie to engine measuring. Photos are great too

Billski
 
Back
Top