riggler
Well-known member
I was home sick with pneumonia today, and was working on my SB4000. I came up with this idea for recessing the toroidal transformer mounting bolt. I hate having things sticking out of the case like that.
You'll need:
7/8" or 1" Socket.
7/16" Wrench.
7/16" Ratchet and Socket.
One 1/4-20 nylon bolt and washer. (Mount the transformer with these. My bolt was 2" long and I Dremeled off the extra when done.)
One 1/4-20 steel bolt, 2.5" long.***
One 1/4-20 steel nut.***
Three 2" diameter 1/4" fender washers.***
Three 9/16" diameter 1/4" washers.***
***These are all standard hardware-store sizes and should be easy to get.
Step 1:
Here are the parts you need.
Step 2:
OIL the tip of the bit and drill your center hole.
Step 3:
Place the three small washers on the long steel bolt like this. Oil the face of the washer that will be against the bolt head!
Step 4:
Pass the bolt through the hole. Make sure the hole is de-burred. That top washer needs to be flush with the bottom of the panel!
Step 5:
Thread on the nylon 1/4-20 nut to a position that will be about halfway into your socket when your large socket is placed over it. Trust me. If you don't have a big socket, you could use a piece of 1" pipe cut to about 2" long.
Step 6:
Showing the vertical position of the nylon nut in the socket, about halfway in.
Step 7:
Remove the socket, and wrap the nylon nut with tape (keeping the TOP flush) until the socket *just* slides over the tape. This will keep things centered for you.
Step 8:
Check the fit.
Step 9:
Put the socket back on. Now oil the top of the bolt thread and the steel nut. Place the big three fender washers on top of the socket, and hand tighten the nut.
Step 10:
It should look like this. Check to make sure you have a decent center alignment.
Step 11:
One hand holds the wrench, other hand turns the ratchet! Get the idea?
Step 12:
Go slow. Because you oiled everything, it should go nicely. This picture is after about three full revolutions if I recall.
Step 13:
STOP turning when you can't see the second small washer anymore! Okay, well maybe one little turn just to be safe ha ha...
The result:
Another angle:
You'll need:
7/8" or 1" Socket.
7/16" Wrench.
7/16" Ratchet and Socket.
One 1/4-20 nylon bolt and washer. (Mount the transformer with these. My bolt was 2" long and I Dremeled off the extra when done.)
One 1/4-20 steel bolt, 2.5" long.***
One 1/4-20 steel nut.***
Three 2" diameter 1/4" fender washers.***
Three 9/16" diameter 1/4" washers.***
***These are all standard hardware-store sizes and should be easy to get.
Step 1:
Here are the parts you need.
Step 2:
OIL the tip of the bit and drill your center hole.
Step 3:
Place the three small washers on the long steel bolt like this. Oil the face of the washer that will be against the bolt head!
Step 4:
Pass the bolt through the hole. Make sure the hole is de-burred. That top washer needs to be flush with the bottom of the panel!
Step 5:
Thread on the nylon 1/4-20 nut to a position that will be about halfway into your socket when your large socket is placed over it. Trust me. If you don't have a big socket, you could use a piece of 1" pipe cut to about 2" long.
Step 6:
Showing the vertical position of the nylon nut in the socket, about halfway in.
Step 7:
Remove the socket, and wrap the nylon nut with tape (keeping the TOP flush) until the socket *just* slides over the tape. This will keep things centered for you.
Step 8:
Check the fit.
Step 9:
Put the socket back on. Now oil the top of the bolt thread and the steel nut. Place the big three fender washers on top of the socket, and hand tighten the nut.
Step 10:
It should look like this. Check to make sure you have a decent center alignment.
Step 11:
One hand holds the wrench, other hand turns the ratchet! Get the idea?
Step 12:
Go slow. Because you oiled everything, it should go nicely. This picture is after about three full revolutions if I recall.
Step 13:
STOP turning when you can't see the second small washer anymore! Okay, well maybe one little turn just to be safe ha ha...
The result:
Another angle: