Maybe you could tell me how the timing marks read. I'm thinking

as

the

pulley rotates to you the first mark is 5 deg. btdc the second tdc

the

third

5 deg. atdc the forth 10 deg. atdc the fifth and smaller mark 15

atdc.

Dave

Adkins said the lead should be 3 deg. btdc and the trailing 15 deg.

atdc.

so

I think that's how I have it set. It does have a good bit more power

like

that. When we started looking for the problem with it cutting out I

checked

the timing and it was leading tdc and trailing 5 deg. atdc. if I'm

reading

the pulley right. so what do you think?  P.S. no trouble on today's

flight

at all but I did pull the timing back about 1 deg.

Maxie... I will get you in touch with a rotary listing that will

put

you

in contact with some real gurus...  if you don't want to get any

more

of

their info, you can email them to take you off!!

the timing was supposed to be set at 20 deg BTDC on BOTH of the

ignitions

WITH THE ENGINE AT 6000 RPM.

Sounds like you had some fun diagnosing the wire grounding

stuff...

sorry

for the headache!

the fuel pressure for the Dellorto Carb needs to be AT LEAST 4.5

lbs

just

to keep up with the flow... I have had it as high as 10.0 without

over

pumping the carb float.  If the fuel pressure gets below 4.5, you

will

need

to keep pumping the throttle to keep the engine going with power...

this

will use the accellerator pump diaphragm to spit enough fuel to keep

you

slightly powered to be able to land... (been there, done that!)

the past loss of oil that I had included "painting" the prop with

the

overspray... the front seal of the ross had begun to leak... look at

the

prop to see if the prop is getting oil overspray from the front of

the

bell

housing just in front of the starter.  there is a guy on the Paul

Lamar

rotary group that has installed a new gasket that should help

address

the

lack of lifetime integrity in the original Ross unit.  Replacement

of

the

front seal in the Ross usually got me back to minimal oil

"consumption"/

loss.

The lack of high end rpm is possibly due to a plug wire

restriction

(if

you replaced all of them with "inferior" wires), lack of fuel flow,

or

the

timing has changed.  (as long as you haven't changed the prop

pitch!!)

Gary C. Buster LPT<P>
Tyler, Texas<P>

madmaxaero wrote:

I'm having  trouble getting the right timing setting . Have you heard of
this . Dave said 3 deg. btdc and 15 atdc. which way should I go? It loses
about 400rpm afterabout 45 sec. of full power and has really good power up
to that point. maxing out at 6400 rpm. This is on a gyroplane. Thanks

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