"Bob Chilcoat" wrote in message ...
My partners and I have all noticed that takeoff roll and climb in our Archer
is a bit long and anemic, respectively. The partner who has had a share the
longest has said that normal TO RPM has always been around 2,250. One of us
recently flew a Cherokee 180 (same engine) that climbed much better and got
over 2,500 RPM during TO. We have roughly 1,500 SMOH on the engine, and
compressions are all in the 70's. Someone on the Piper group suggested that
the muffler might be plugged. The POH says nothing about normal static RPM.
Any thoughts?

copied from:

TYPE CERTIFICATE DATA SHEET NO. 2A13

This data sheet, which is a part of Type Certificate 2A13, prescribes
conditions and limitations under which the product for which the type
certificate was issued meets the airworthiness requirements of the
Federal Aviation Regulations.

snip

XII - Model PA-28-180 (Archer), 4 PCLM (Normal Category), 2 PCLM
(Utility Category), Approved May 22, 1972, for S/N 28-E13. and
28-7305001 through 28-7505260.

This series differs from the basic PA-28-180 (Item III) by the
addition of a five inch fuselage extension, wing span increase larger
horizontal tail, gross weight increase and other minor changes.

snip

Propeller and Propeller Limits

Sensenich or 76EM8S5 or M76EMMS
Static r.p.m. at maximum permissible throttle setting not over 2425
r.p.m., not under 2325 r.p.m.
No additional tolerance permitted.
Diameter: Not over or under 76".


Apology implied if cut-and-paste format is messed up.

Regards;

TC