GrummanDude
Joined: 15 Jan 2006
Posts: 926
Location: Auburn, CA
|
 Posted: Tue Feb 23, 2010 12:29 pm Post subject: Fwd: My plane is slower than my prop |
 |
|
A customer sent me this from GG.
I have two customers with late AG5Bs. The 2004 will not turn 2700 rpm at 5,000 feet with a 63 inch pitch prop. The 2005 will turn 2800 rpm. The planes are very similarly equipped. The 2004 has two 430s, the other a 430 and a 530. The 2004 weighs 1550, the 2005 weighs 1574. They both have 63 inch pitch props.
I have been all over the 2004 to find out where the difference is. My first thought was that the carb was not set up right. I removed the carb, sent it to LyCon, had it checked, then reinstalled it so that I was sure the throttle opened all the way. No change. Then I removed the air filter. A little change, maybe 25 rpm, but not significant. I then completely re-rigged the plane, put my 65-63-61 prop on it and I could just barely get to 2700 straight and level.
I've got a lot of hours in both of them. One is significantly faster. I can't figure out why.
On a similar note, I have a customer with a 76 that's been wrecked a couple of times, patched back together, and is not straight at all. It will run way over red line with a 65 inch prop and trues all day at 144 knots and 2650 rpm. He's getting the Jaguar cowling in a couple of months. We'll see then.
--
| | - The Matronics TeamGrumman-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
http://www.matronics.com/Navigator?TeamGrumman-List |
|
_________________
Gary
AuCountry Aviation
Home of Team Grumman |
|
Get Email Distribution Too!
FAQ
Search
Memberlist
Usergroups
Register
Profile
Log in to check your private messages
Log in
