Hi Earnest,

I used 3/4" 0.049 tubing because it is easy to weld.  I hate to say this here after getting beat up a couple of weeks ago, but Paul Lamar and Bill Freeman both 'blessed' it as well as one other engineer that might not want to be mentioned.

Here is an excerpt on the weight:

>     The original conical mount from Van's weighed 11 lb 6 oz.  The
>     new mount
> weighs 13 lb 3 oz, or 1 lb 12 oz more.  Lot's of extra .75" tubing
> there!
>     The engine adapter mounts weighed a total of 5 lb 12 oz.  The
>     lower mount
> weighed 2 lb 12 oz, the right upper weighed 1 lb 11 oz and the upper
> left mount weighed 1 lb 12 oz.  The three adapter mounts were
> weighed together as well as individually to eliminate rounding
> errors.  Note that the upper adapter mounts (on both sides) tie the
> front and rear of the engine together to eliminate extra loads on
> the tension bolts.

Ken Powell

-------------- Original message --------------

> Ken,
>
> Your motor mount looks almost identical to what I've
> worked out for my Delta, except that mine would be
> much shorter so that the engine is closer to the
> firewall.
>
> What size tubing did you use, and do you have any
> analysis numbers for it?