The bolt holes shown here are in the proper location. Unless you

abandon

at least one bolt hole how did you get the starter on the plugs side?
Got any pictures? Here is a picture of Chuck Harberts Velocity with
the starter on the exhaust side.

Paul Lamar

Yes, the bolt pattern obstruction is my main objection to the spark plug
side starter mount.

 I do understand the possible interfearence with a cooling inlet under

the

prop hub (so why not an inlet beside the prop hub?) but no one has shown

me

how a radiator can practically fit where a six o-clock starter goes.

I've

been staring at my -4 with the cowl off for a couple of days now and I

don't

see a way to get one there unless it were very short or angled so much

that

it extended below the lower cowl.  I could be wrong about this but I

urge

all builders to MAKE AN ACCURATE DRAWING before commiting to any given
configuration.
Also  note that the Ross starter was intended to be at 6 o-clock because
they assumed the engine would be mounted "plugs-up".

Tracy Crook
rws@altavista.net
www.rotaryaviation.com

The problem with that is very few people have the skills needed to
make a drawing accurately showing all possible interference points
me included. Even Boeing has problems with that. A mock up is the
best way to do it. Never the less here is an RV4 drawing showing a
rad under the engine. This rad is probably overkill at about 955
cubic inch core. Chuck Dunlap has demonstrated a 530 cubic inch rad
that works in the hottest state in the nation.

If you fly over after CopperState I will buy you a tank of gas, feed you
and let you stay in the apartment over the hangar to see my mockup.

Anything

to get that starter out from under the redrive :-)

Paul Lamar

Tracy Crook wrote:

That's true Paul but even the quick & dirty drawing you did shows a lot.
For instance, the most obvious thing in the way when looking at my -4 is the
oil pan.  I notice in your drawing that there is a very "customized" pan.
Not impossible but not easy either.

Thanks for the offer of the free room & board but I better pass this time.
My quickly cobbled up auto parts store exhaust system will be pushed to the
limit getting to Copperstate & back :-)

Tracy Crook
rws@altavista.net
www.rotaryaviation.com

Naw it is easy. You just cut it with a high speed disk grinder and braze
on a flat piece of sheet steel.

What is going to be hard is mounting the starter(s) on the plugs side.
BTW I notice the 45 degree solenoid starter fits your redrive plate.
What year engines was that starter used?

Its only an extra 600 miles round trip :-)

Paul Lamar
 
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