******You're absolutely right on that one George, any acute angle under

45

degrees should be avoided on sand Castings, unless the surfaces are

going to

be machined finished......So, I went back to the drawing board (2 times)

and

this is the best of both results.....I reworked the cross sectional area

and

shifted it tighter in so as to transfer column/compressive loads

directly to

the face of the 13B, ran a quick check and it came up pretty good, and
certainly Sand Packing Friendly :) ....The bolt Pad can be blended right

up

against the Fin at your discretion, same goes for the other 2 on the L/H

side.

All 5 Flange mounting hole Pads must be faced to remove side to flange

fillet

radiuses,

## Understood, however I kina felt that the corner radius was needed to
avoid stress concentrations, I haven't seen any machining on car
bellhousings so is this a little overkill ?-OR does the fact the commercial
bellhousings being  injection cast have that much better finish ?

and provide a parallel surface to the rear of the Flange, with a

22mm (.875") C'bore, with a 1mm (.040") radius ground on for prevention

of

stress concentration. This will provide ample clearance for a 14mm

socket and

10mm Flange Bolt combo.

The odd-ball 8:30 mounting hole, the one that's closest to the center of

the

e-shaft will be the only one impacted by the counterboring operation as

it

will be cutting into the Bellhousing's side wall to a max depth of 1.8mm
(.071"). This is quite acceptable as it's well bellow 50% of the wall
thickness so an internal bulge is not required.....(See attachment -3)

##If it's OK with you I may decide to put a little one in, for piece of mind
!

BTW Butch what have you come-up with in regard to the mounting bolt

'in the

centre of the starter'.

******George, will be putting that one to sleep once and for all, next.

## I would make some suggestions but your way ahead of me on these things!!

And I didn't quite understand the drawing involving the 6 O'clock

starter

position.
George (down under)

******Don't panic Georgie, those are just construction lines just to see

if

it's do-able.......My mussings so far: ....It is very DO-ABLE and I will

be

tackling it very, very soon....I've been toying with an idea in my

head???

Butch

Butch send me some drawings in dwg format. I want to check this stuff in

3D.

Paul Lamar

Butch- In conclusion, well I guess  that modification of yours has been
tested by your programme, but for the life of me I never would have thought
of that, nor can I understand how it could be as strong -I  just don't have
the training.

What I could do is turn that flange a little bit out at the bottom and blend
it all in nicely

That's the difference between you having the training and me trying to
guess. Finally I won't have any problem with these corners- not at all !!

Hey! didn't you like my bent stiffeners?
George

 
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