Low Speeds out of my O200 in my 750?!?

Purchased a Whirlwind 2 blade GA prop and solved my low RPM issues, still only getting 70-75 mph (on Dynon and GPS) in cruise at 2600 RPM. Looking for someone in the Hannibal, Mo area that could offer assistance. We are the 3rd owner on this aircraft with 90+ hours on the airframe and engine but running out of ideas and $$$.

Views: 1344

▶ Reply to This

Replies to This Discussion

Permalink Reply by Ralph Sanson on September 4, 2014 at 4:21am

you need to see 2750 rpm on climbout with the O-200 - if not then prop needs setting

but first check if the mags are timed at 28 deg  not the old AD setting of 24 degs  which looses about 5 hp

Permalink Reply by Jimmy Young on September 4, 2014 at 7:44pm

Darin, I've got a 750 with a C-90 & the Whirlwind prop. At 2600 rpm I'll be making around 95 mph or better, S&L solo. My own version of a power-check is to firewall it while S&L to see if I continue to make the same rpm, which with my prop setting is around 2660 rpm. I would make sure you are getting full power out of your 0-200 with a thorough engine checkout like Mr. Bonasara suggested by confirming your timing and verifying good compression before I'd do anything else.

RSS

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