Hi all, hope you are all safe and well.
I have started my Express build. Progress is slow, as I try to anticipate and overcome issues that come up. I am finding the process enjoyable.
I was wondering the thoughts on under board wires. Should they be tight to the board, or from the board down and tight to chassis? Does it even matter? From what I have read in a TW everything matters.
I am documenting the build with pics and comments, and hope to post a build thread once it is completed.
Thanks all for your input.
Jim
Thanks Martin. I had seen the wire hooked over the top of the turret, somewhere, and discounted it. Now I am glad I asked the question. Thanks for the detailed answer.
sluckey wrote: ↑Fri Jun 19, 2020 1:11 am
Like this...
Sorry to revive this old thread, but I am just curious, when you use this method, do you solder the jumper from both sides of the turret or just the top side? I suppose you don't want to fill the turret completely with solder? At the same time, I also don't think you'd want to have two separate joints on one turret perhaps?
I only solder from the top. When I install the jumper I put just enough solder on the rim of the turret to hold the jumper in place. No solder inside at this time. It's hard to see any solder in that pic, but it's there. Once all the components leads are in the turret I partially fill the turret with solder. Never so much that solder runs out the bottom. Then finally I put a shiny little ball of solder on top of the turret just for looks. Here's a pic of the completed board...
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sluckey wrote: ↑Thu Nov 26, 2020 12:56 pm
I only solder from the top. When I install the jumper I put just enough solder on the rim of the turret to hold the jumper in place. No solder inside at this time. It's hard to see any solder in that pic, but it's there. Once all the components leads are in the turret I partially fill the turret with solder. Never so much that solder runs out the bottom. Then finally I put a shiny little ball of solder on top of the turret just for looks. Here's a pic of the completed board...
So I reckon, Steve, you are proponent of going under-board for the jumpers even on a Marshall style build (super lead)? Since they are B+ for the most part once they are in it's done. I was thinking on my build that if I went above board to use teflon thinner wire, but under-board seems cleaner.
I use only 24AWG buss wire for all jumpers. Some on top . Some on bottom. I like to hide the ugly long ones under the board. If the jumpers need insulation I just strip teflon insulating from 22AWG wire. You can look at the boards I've done on my website... http://sluckeyamps.com/docs.htm
Steve, so the 24g bus wire, very interesting. Is that so the wire is extra light and not apt to move or sag once soldered in? 24g carrying B+? With your experience I am believer.
The main reason I use 24AWG is because I have two 5 pound spools! If I had that much 22AWG buss wire, that's what I'd be using. But 24AWG has sufficient ampacity for any board I've ever done.
24AWG is fine for board jumpers. It's as big as most of my component leads. If I have components that require larger gauge they will usually not be placed on board. Sagging is not a problem. 24AWG with teflon insulation is pretty stiff. And most of my jumpers are placed in a straight line and stretched tight so there's no extra wire to sag. Here's one exception to my straight line under board jumpers. See any sag?
