To: flyrotary@lancaironline.net Content-Type: multipart/alternative; boundary=0022150488fbe9a771046c2679e2 --0022150488fbe9a771046c2679e2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Allow me to speculate: I suggest that watertemps above 210 are out of bounds. Thus it should be looked at as something you got away with, not a number to look for in normal operation. I would retorque the stack cold if I had seen those numbers. (235) Here is some dyno stuff for a 12A bridgeported engine with two 36MM chokes in a Weber carb. 6500 RPM (because there is no point in testing a racing engine below that), and even then it is to put up a starting point for a curve. Torque 139.6 foot pounds. HP 173.3 EGTs 1515 front 1491 rear BSFC .666 (the devils own) oil temp 162 (160 is ideal) Above 160 costs power due to rotor face temperatures. Oil pressure 99.9 (relief set at 110 pounds) Water temp is always 180 controlled by the cooling system on the dyno. Air/fuel 12.3 (slightly rich is fine as it helps cooling and sealing) I would expect to get as much as 10% more power from a 13B. Lynn E. Hanover Interesting questions: Is that data at full throttle? You can hold cruise RPM at an A/F of 15? Today I ran the engine .9 hour, .7th's static at 4700 rpm - 13B, Marcotte 2 - l redrive Water temp 235 OAT 61 Spring hasn't arrived above the 44th parallel oil temp 215 yet Exh. temp 1500 Prop speed 2350 MP 28 oil pres 75 air - fuel 15 to 1 fuel press 42 .2 hr high speed taxi Water temp 188 oil temp 160 Ex temp 1400 Prop speed 2500 MP 28 fuel press 42 The static engine run temperatures climbed quite a bit with the cowling on and working on the programming I didn't notice that this was happening, but they went right down when I idled back. I will have to pull the cowling in the morning and check the redrive, it appears the seal is leaking on the flywheel side. With no support from Marcotte, I may have too much 80w in the gearbox. I believe that the temperatures look good for flight. JohnD --0022150488fbe9a771046c2679e2 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

Allow me to speculate:

I suggest that watertemps above 210 are out= of bounds. Thus it should be looked at as something you got away with, not= a number to look for in normal operation. I would retorque the stack cold = if I had seen those numbers. (235)

Here is some dyno stuff for a 12A bridgepor= ted engine with two 36MM chokes in a Weber carb.

6500 RPM (because there is no point in test= ing a racing engine below that), and even then it is to put up a starting p= oint for a curve.

Torque 139.6 foot pounds.

HP 173.3

EGTs 1515 front 1491 rear

BSFC .666 (the devils own)

oil temp 162 (160 is ideal) Above 160 costs= power due to rotor face temperatures.

Oil pressure=A099.9 (relief set at 110 poun= ds)

Water temp is always 180 controlled by the = cooling system on the dyno.

Air/fuel=A0 12.3=A0 (slightly rich is fine = as it helps cooling and sealing)

I would expect to get as much as 10% more p= ower from a 13B.

Lynn E. Hanover

Interesting questions: Is that data at full= throttle?

You can hold cruise RPM at an A/F of 15?

=A0

Today I ran the engine .9 hour, .7th's = static at 4700 rpm -=A0 13B, Marcotte 2 - l redrive

=A0

Water temp=A0=A0=A0=A0=A0=A0=A0=A0 235=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 OAT=A0 61=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0 Spring hasn't arrived above the 44th parallel

oil temp=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0 215=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 yet

Exh. temp=A0=A0=A0=A0=A0=A0=A0=A0=A01500

Prop speed=A0=A0=A0=A0=A0=A0=A0 2350=

MP=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0 28

oil pres=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0 75

air - fuel=A0=A0=A0=A0=A0=A0=A0=A0 15 to 1<= /span>

fuel press=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0 42

=A0

.2 hr high speed taxi

=A0

Water temp=A0=A0=A0=A0=A0=A0=A0=A0 188

oil temp=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 = =A0=A0 160

Ex temp=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= 1400

Prop speed=A0=A0=A0=A0=A0=A0=A0=A0=A02500

MP=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0=A0=A0=A0=A0=A0=A0=A0 28

fuel press=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0=A0= =A0=A0=A0 42

=A0

The static engine run temperatures climbed = quite a bit with the cowling on and working on the programming I didn't= notice that this was happening, but they went right down when I idled back= .

I will have to pull the cowling in the morn= ing and check the redrive, it appears the seal is leaking on the flywheel s= ide.=A0 With no support from Marcotte, I may have too much 80w in the gearb= ox.=A0 I believe that the temperatures look good for flight.=A0 JohnD

--0022150488fbe9a771046c2679e2--