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Message will be deleted from queue--- Begin Message --- Title: Re: Vibration[EMAIL PROTECTED] wrote:
>
> Interesting comments...on prop placement...
>
> My coupe has a 1-B90 prop installed so that looking at the front of the
> airplane, the prop is 45 degrees in the direction of rotation when on the
> compression stroke.
>
> This allows hand proping. As seen from the cockpit, the prop would be at the 2
> O'Clock position; from outside the airplane, lookng from in front of the
> airplane, it would be in the 10 O'clock position.
>
> Para 8, page 44, of the Ercoupe Service Manual states " Install propeller so
> it is 45 degrees right of vertical when compression stroke is begun." ( I
> haven't found the reference, but somewhere in the manual, I think I remember
> that all references as to right or left, etc, are made as if one is sitting in
> the pilots seat, (and that the "compression stroke"refers to #1 cyl.)
>
> The outline drawings on Page 8, show the prop mounted as 45 degrees - 2
> O'clock from the pilots seat - ( so it can be hand propped...) However, the
> Service periodic service chart , Figure 6, page 16, shows the prop at 45
> degrees left. Maybe this is where the confusion comes from.
>
> Well, we certainly know that to hand prop the engine, the prop needs to be 45
> degrees to the right, as seen from the pilots seat....
>
> I plan to leave mine alone......
>
> Fly Safe - Have Fun
>
> Regards,
>
> Harry Francis
> N 93530 @BCB (Blacksburg, VA)Hi Coupers,
In the 13 years I've had my coupe, I've had to 'prop' it a few times if
the battery was to low to turn it over.
Facing the prop from the front the 'compression' blade is as the 10
o:clock position. I'm 6'2" and have no problem at all in spinning it at
it's 'low' distance from the ground. I've been hand propping since I was
just a kid so maybe I'm a little more comfortable with it than someone
who has always flown electic start planes.
I use the method of placing hands on the prop, swinging my right leg
forward under the prop and then swinging it back behind me at the same
time I start to spin the prop. That transfer of body weight by swinging
the leg not only gives me a faster (stronger) spin of the prop, but it
also pulls my body away from the prop so that I am in a far safer
location when the engine fires.
If anyone out there is 'uncomfortable' with propping a coupe, leave the
mag switch 'off' and try this method a few times to get the feel of it.
HINT: Always have someone inside the coupe with their foot on the brake
or have the main gear wheels well chalked. DO NOT TRUST THE PARKING
BRAKE TO HOLD!!! (Especially if you have Goodyear brakes)That's my 2 cents worth. Any discussion on this?
Bob Saville
N3396H 415C
Eugene, OR
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