View single post by Tom Harbin
 Posted: Fri Dec 21st, 2018 04:27 pm
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Tom Harbin

 

Joined: Sat Sep 1st, 2018
Location: Arizona USA
Posts: 211
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Dave,

Thanks very much for those these two very informative posts.

What I really want is to be able to set the min and max voltage percentage and have a linear (non-notchy) throttle.

One of the things I don't like, is using a 28-step decoder with a 128-step throttle.
While it isn't horrible, I invariably want something like step 8.2 out of 28,
and at lower speeds the notches just make the "momentum" rather jerky.
 
A smooth DC throttle is exactly what I want.

Your information on running time is very helpful.
I can't really afford to make a lot of guesses getting started.

After I'm started, I can sell off DCC components to fund BPRC,
but right now this conversion has to come out of next year's modeling funds.

A one hour run time is about ideal for the Porter.
I actually planned to have run times of about: Porter 0-4-0 - 0.5 hours, Porter 2-4-0 - 1 hour, 4-4-0 - 2 hours, 2-6-0 - 2 hours.
These run times should add some semi-realistic operations opportunities to the layout.
Taking into account idle times, I think this will work out very well. 

If I could be so bold, can you tell me which Pololu you are using for these estimates?

I think I have pretty much locked into DelTang for my conversion as it seems fairly idiot-proof and a purer BPRC solution than the S-Cab.
I really like S-Cab's battery management solution though and will continue to look at where the system goes. 

Tom


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