[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: Primary tubing size



Original poster: Terry Fritz <teslalist@xxxxxxxxxxxxxxxxxxxxxxx>

Hi Mike,

At 06:25 AM 6/28/2005, you wrote:
I'm planning the primary for my 8-1/2" x 40" secondary.

I think I'll make the primary a sloped pancake @ 25*,
Any better suggestions?

"I" would just make it flat, but "sloped" ones look better.


I'm considering 3/8" over 1/4" copper tubing. Any good reason to use the larger diameter? Turn spacing provided by 10-32 nylon screws.

3/8 is fine. You coil is a good sized one so 3/8 will do well. Check the prices on the screws since a lot of them can add up. Try to get the plastic compatible loctite if you use nuts on them like I did since they tend to come loose in mass.



Also how for should I start the inner turn from the O.D of the secondary?

I always used 1 inch away.

Cheers,

        Terry


Thanks for the feedback

                   Step by step
                                Mike