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Old 7th Dec 2017, 10:04 pm   #24
Argus25
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Join Date: Oct 2016
Location: Maroochydore, Queensland, Australia.
Posts: 2,679
Default Re: Bush TV22 spares availability?

Quote:
Originally Posted by Ed_Dinning View Post
Hi Argus, no need to remove the pitch from the overwind.
The pitch on the overwind on mine had "failed" due to the extent it had hardened and shrunk and developed large crevices in it so deep I could see the overwind in quite a few places in the bottom of the cracks. So the lopty certainly would have failed if I had left it like that I think. The pitch has to go in my opinion, using the slow mineral turps method. Plus once its removed its much easier to work on the transformer without putting any stress on the wires that lead to the windings.

Do you know where the data/link is that shows the taps ?

Its also important that the phase/winding direction of the overwind is correct wrt to the primary (plate connection) so the peak primary voltage adds in phase to create the correct EHT.
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