Re: toroid

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: Steve Conner <steve@xxxxxxxxxxxx>

Hey Dmitry,

5kg seems pretty light for a 40" toroid. I suppose the lighter the 
construction the better, as long as it's strong enough to survive 
handling. Some spun toroids dent very easily.

I think the John Freau 4" x 13" spun toroid probably weighs less than 
500 grams, I would guess 250-300. I managed to dent mine on the trip 
to Cambridge :( I also have an 8" x 24" made from thicker aluminium 
that I guess weighs about 3kg. If it were 40" it would probably weigh 
at least 10kg.

Bill Wysock ordered what must be about the biggest spun toroid in the 
history of electrical engineering, for his humongous Model 13M coil. 
According to his site it was 8ft major diameter and weighed 275lbs. (125kg)

http://www.ttr.com/images/img-6.jpg
from the page http://www.ttr.com/model13a1.html


Steve Conner
http://www.scopeboy.com/


"how much does this toroid weight? i just want to make a comparison with my
homemade fiberglass 40" toroid