Replacing laydown OT with stand up

[3choplex]

I have determined that the problem with my current build is a bad salvaged OT. I ordered a new one this morning. The old one was a laydown type, the new one is a stand up with what looks like pretty flimsy tabs.

I am most likely going to need to install the new one right over the existing hole. Any suggestion on how to reinforce the hole so my OT isn't just connected at the tabs with nothing underneath? I realize even if the hole wasn't there, the support underneath would mostly just keep strain off the tabs.

I have some roof flashing type material I could use underneath, good idea? Anything I need to consider about attaching it?

[jojokeo]

Is the lay down tranny determined bad because it's a lay down tranny or is there something else that causes you to think this?

Flashing is a little weak/thin. Depends on weight of the tranny too but a piece of aluminum material w/ the thickness of a traffic sign would be nice or double up on the flashing for thickness. Ordinary fender washers can sometimes work depending on opening and size of washer (wide w/ small hole).

[andrew_k]

jojokeo: He's tested it as bad in an otherwise working circuit.

3choplex: Hold off doing anything until you're holding the new OT in your hand so you can actually see it sitting in place and decide what, if any, further reinforcement is needed.

[stingray_65]

3choplex: Hold off doing anything until you're holding the new OT in your hand so you can actually see it sitting in place and decide what, if any, further reinforcement is needed.

I agree,

Often inspiration will happen when you have your  parts in hand.

I have also found it to be good practice to save the "bells" from all my transformers that are bad.

Transformers seem to be made of common parts, E and I core parts seem to come in just a few sizes, therefore the bells often interchange.

I have converted more than a few transformers from laydown to stand up.

I have also seen that some transformers that have removable feet (hammond for example), they can be very easily made into lay down style.

[jojokeo]

I have done some "listening" tests and found the laydown types to be quieter than stand up types. I think this is why Leo used them this way after discovering this too and allowing the tranny's to be mounted closer together.