Atlas SDP-35 modification

I turned the motor sounds right up for the movie - and forgot to turn the horn up as well. 

For what it's worth, the correct model designation is "SDP35".

I can't help it.  I just love hyphens. 

Wow, I think that runs pretty well at low speeds especially compared to the QSI decoders.  But the sounds are wrong.  There's no turbo.  You could go one step further with individual Zimo decoders for each motor and a Tsunami for the sound (or individual ESU HO decoders) but that does increase the cost a bit.

But, if you prefer to sell it I've been looking for one.  For parts, so you can keep the decoder if you want.

Oh, gosh.  I just got squared away with PRR and no hyphens, and now find that EMD doesn't use them either.  What is next?  At least I capitalize Diesel.

Are there any railroads or manufacturers that did use hyphens?  If not, I shall refrain in all cases.

I do have several spare Atlas SDP35 bodies - stole the China drives for other projects.  My interest stops at the SD9.

If anyone wants to sell SDP35 bodies or other 2-rail parts, eg, frames, pilots, tanks PM me.  A couple of my projects include a GP40P and an SDP40 so...

A number of things on the newforum don't work for me - one of them is PM.  

I cannot post photos, nor can I edit posts.  It is difficult to "like" a post, and quite often it takes four clicks to do anything.  I am surprised folks have their e-mails in their profile . . .

Max, Very nice work!   How does it run with a load behind it?   With the motors in series now, maybe adjust the speed curve if you are unhappy with the low speed operation.. At first glance it doesn't look too bad.   What speed step are you on in the video?  

If I am not mistaken the SDP35 had the 567D3A prime mover in it, which was a 16 cylinder de-turbo-charged version using a 645 power assembly. I think the turbo charged 567D blocks were often very difficult to maintain which ultimately got many of them de-turbo-ed and back to roots blown aspiration.    I'm sure someone on the forum can confirm?

Mike DeBerg posted:

 

If I am not mistaken the SDP35 had the 567D3A prime mover in it, which was a 16 cylinder de-turbo-charged version using a 645 power assembly.

Originally the "35 Series" model line ALL had the 16-567D3A Turbocharged prime mover. Some railroad may have up-graded their 567 series engines with 645 power assemblies, which also required different camshaft counterweights, and different fuel injectors, while the turbocharger was retained. Other railroads may have derated their turbocharged 567 series engines and converted them to roots blowers.

I think the turbo charged 567D blocks were often very difficult to maintain which ultimately got many of them de-turbo-ed and back to roots blown aspiration.    I'm sure someone on the forum can confirm?

Hi Mike

Thanks.

As a newbie, I wanted to discover the "real" situation about what's on offer.  I've been building HO locos for a long time and I realise that the sound project I loaded isn't a replica of a real SDP35, I just wanted to hear the speakers.

The real situation is that China drives work well in series for line haul running, but in closed in areas, the slow speed running is lumpy.  I'm on a plank shunting layout 5 metres long, so slow speed is all I've got.  After much work, my Weaver GP 38 runs sweetly on notch one.

If I decide to sell it, I will find a sound file which better suits the SDP35 before I offer it, if that's required.  I've got a Lokprogrammer, so I can make it whatever I want.

I don't have any rolling stock as I'm in the process of building it all.

My main reason for posting is that I have received a lot of help here, so I thought I would contribute something - such as it is.

Cheers