Bachmann Online Forum

Discussion Boards => General Discussion => Topic started by: scrimshaw on February 27, 2009, 07:56:21 AM

Title: Bachmann 3 truck shay with tsunami decoder
Post by: scrimshaw on February 27, 2009, 07:56:21 AM
I recently purchased a Bachmann 3 truck shay loco with the tsunami DCC decoder.  This is my first experience with a shay.  When it runs at low speeds the synchronized chuffs sound like they are running at a high RPM.  Is this normal for a Shay?  I realize that the RPM's would naturally be faster than a normal engine due to the mechanics of the Engine and the smaller diameter of the wheel.  I just did not think that it would be that much faster.  Does anyone here have one of these Shays? and if so, is this normal. 
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: THB-DAVE on February 27, 2009, 10:47:11 AM
The top speed for geared logging locomotives like Shays, Climaxs and Hieslers was around 15 mph and at top speed they sound like a sewing machine about to explode. The Bachmann Shay runs at prototypical speeds.

Dave
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: richG on February 27, 2009, 05:00:37 PM
Here are some Yout Tube links. Quite often you can find some prototype locomtives on You Tube. Just search You Tube for what interest you.

http://www.youtube.com/watch?v=4LDHpNX125U&NR=1

Rich
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: Tom Lapointe on February 27, 2009, 07:41:43 PM
As Dave said, the Bachmann Shays (both the 2 & 3 truck versions) run at appropriate scale speeds.   :)

As it came from Bachmann the Tsunami chuff rate was actually too slow  :o for a Shay; if you're running DCC, it's easy to correct by changing the chuff rate CV to it's maximum value.  ;)

Here's mine in operation after the chuff rate adjustment:

http://www.youtube.com/watch?v=hz9m0LUCJ0g (http://www.youtube.com/watch?v=hz9m0LUCJ0g)

- & here it is double heading  ;D ;D with an Accucraft live-steam Shay!  8)

http://www.youtube.com/watch?v=LpbBhsy0ZCQ (http://www.youtube.com/watch?v=LpbBhsy0ZCQ)

                                                                                              ;) Tom
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: scrimshaw on February 28, 2009, 05:51:49 PM
Thanks for all the replys.  I figured that was the case!!!!!! 
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: SteamGene on February 28, 2009, 06:01:28 PM
Geared locomotives sound like they are doing at least 60 as they waddle down the road.  :D
Gene
Title: Re: Bachmann 3 truck shay with tsunami decoder
Post by: guy_e on March 22, 2009, 05:13:00 AM
How do you change the chuff rate CV to it's maximum value please ? Thanks.