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Need a small decoder for On30 loco
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 Posted: Wed Sep 25th, 2013 05:23 am
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Scott Maze
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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?

Thanks,

Scott

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 Posted: Wed Sep 25th, 2013 12:35 pm
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NathanO
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Since Tony's has both you should probably put this on their forum:

http://tonystrains.com/forum/index.php?sid=76ecef291f1238f9c786c3cf32ff22ea

They have people at Tony's that work with all the lines they sell.

Nathan

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 Posted: Thu Sep 26th, 2013 11:42 pm
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Lost Creek RR
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Scott
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.
Rod.

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 Posted: Fri Sep 27th, 2013 07:37 pm
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on30critter
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Rod, I think this is the Gas Mechanical decoder installation that you are talking about. Do you remember how big the holes are in the radiator?

http://www.freerails.com/view_topic.php?id=3765&forum_id=54&page=1

Mike

Last edited on Fri Sep 27th, 2013 07:39 pm by on30critter

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 Posted: Sat Sep 28th, 2013 12:34 am
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Lost Creek RR
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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.
Rod.

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 Posted: Thu Oct 3rd, 2013 05:43 am
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Scott Maze
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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.

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 Posted: Tue Jan 7th, 2014 03:08 am
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Eugene Desilets
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"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

ER Desilets

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