I'm finishing a very cramped 0-4-0 gasoline loco in On30. I've used small decoders in cramped space before, but I'm puzzled by the products available today. Digitrax now offers an SDN 144PS that will fit, at a cost of $40.96 including speaker, while the comparable Soundtrax TSU750 costs $114.76 w/o speaker (both at Tony's Train Exchange). Are these products comparable? If so, why the price difference? Must I also buy Soundtrax programmer to get the sound I want?
Some way back in my Lost Creek RR postings there is some images of how my Gas Mech got its decoder installed. It will need a heat sink on top of the decoder ( it gets very hot) however you can add a speaker vertically up behind the radiator. Just make sure you drill some neat holes in the radiator to let the sound out. I fitted the capacitor in the cab covered by a 44 gallon drum opposite side to the engineer. It was needed to keep the loco moving over any bits of dirt on the track.
Have fun the sound when completed is great that is if you go forward with the Soundtrax 750.
Mike that's the post and to be honest I have no idea what size the holes were. It did not matter to me as I added the Backwoods dress up kit that has an etched brass radiator cover that covered the whole area. You might fashion one out of some brass screen.
I have now called Tony's three times, never got through to a human, just the recorded hold voice. Then I sent them a question using their website, over a week ago but never got an answer. Guess I'll go elsewhere.
"Some way back in my Lost Creek RR postings there is some images of how my Gas Mech got its decoder installed. It will need a heat sink on top of the decoder ( it gets very hot)"
A couple of things for this here DCC virgin.
Installing a DCC (NCE n12sr-puny N scale, with enough punch) into a Grandt mine motor. Not bothering with sound-it's a mine motor... Anyway, I didn't see anything about heat-sinking the decoder. Also, will definitely need a capacitor-looks like I can calculate how many mF I need, and just go buy & install one-again, drastically limited for space.
Any help deeply appreciated