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Doctor G
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Hello. I have the creative urge to build this early vertical boiler class A Climax in On30. This will hopefully run on my 1910 backwoods logging operation.



I found this neat On30 kit on eBay to build up a very close replica. It uses a donor mechanism from a HO Proto 2000 SW8/900. I was able to get the donor locomotive off eBay as well (it is strictly DC analog at purchase).





I need some help figuring out what would be the best sound decoder to power the donor and sound like an ancient class A Climax traveling at the wickedly fast speed of 5 miles an hour. I would appreciate any advice you have for a sound decoder that would control the donor mechanism and provide geared locomotive sounds through a speaker in the cabs roof.

Thank you for any thoughts and advice you might have. It is greatly appreciated. Doc Tom.

NathanO
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You might look at Soundtraxx. They have a good reputation and supply some locomotive manufacture's with sound units including Bachmann On30, HO, and Large Scale Climax's.

Nathan

Helmut
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I just came across a site where another guy installed the Soundtraxx Climax sound in a model of a ClassA. He deleted the bell track, as the A did not have any. According to him, the remainder faithfully represents that loco's sound.

Doctor G
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Thanks Guys. Helmut do you have a link to the site of the Climax with sound?  I appreciate :glad:all the help.  Doc Tom

Salada
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Hello Doc,

http://www.Soundtraxx.com;  Durango, CO, U.S.

Good chips, I am slowly converting locos to them but I wasn't aware they had a Climax chip though they do make a reduced function one (a bit cheaper) for Bachmann's On30 Climax (at least, I've been told elsewhere that Bachman are using their chip).

You could try phoning them - I did from England; VERY helpful & polite tech dept (perhaps my accent helped ?!) - or E mailing them.

Make sure you choose the current Amps type for your particular motor. If your motor exceeds the chip rating you WILL destroy the chip.

Regards,   Michael

Doctor G
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I had wondered how you picked a decoder that would not let out the "mysterious white smoke." Now I know.:thumb: Thank you. Doc Tom

Helmut
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@Doc Here's the link

Salada
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'Evening Doc,

The model Climax in Helmut's link in above post has a TSU-750 motor control/sound chip.

Your consists are probably small & lightweight but be careful in On30. That chip has a MAX motor stall current of only 0.75 A or you'll have genuine white smoke (but only for a second or two). For On30 Consolidations & K27s I am using the 1000 series chips but they haven't hauled anything heavy up a grade yet; they seem OK so far on my test tracks.

Regards,      Michael

Doctor G
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Salada wrote: 'Evening Doc,

The model Climax in Helmut's link in above post has a TSU-750 motor control/sound chip.

Your consists are probably small & lightweight but be careful in On30. That chip has a MAX motor stall current of only 0.75 A or you'll have genuine white smoke (but only for a second or two). For On30 Consolidations & K27s I am using the 1000 series chips but they haven't hauled anything heavy up a grade yet; they seem OK so far on my test tracks.

Regards,      Michael
Thanks Michael and Helmut for this great advice. I will be very very careful...........to avoid the puff of white smoke. Doc Tom


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