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Subject: 
Re: "Big Blue" Pneumatic 4-6-4 engine and tender
Newsgroups: 
lugnet.org.ca.rtltoronto, lugnet.trains
Date: 
Wed, 1 Nov 2006 17:42:56 GMT
Viewed: 
12731 times
  
In lugnet.org.ca.rtltoronto, Anthony Sava wrote:

<snip>

> I have a suggestion for the performance issue, but I'm no engineer so please
> forgive me if it won't work.  Have you tried adding more weight above the
> drivers?  I don't know how much those cylinders weigh, but they're full of air,
> which can't help things any.  Perhaps the slippage is caused too little of the
> engines weight is being distributed over the driving wheels.
> 
> I had a similar problem with a small train MOC of mine where I had the motor in
> the tender, which was little more than the motor itself.  There just wasn't
> enough weight on the motor and it kept slipping.  Troy has told me he sometimes
> adds rolls of pennies to his MOCs to make the motors more efficiant.  Granted,
> this is all about 9v motors, but the theory seems to be the same, at least to
> me.
> 
> --Tony

Great ideas Anthony!

I did put a LEGO boat weight right on top of the drivers, and the 9v motor is
pretty close as well.  I haven't looked at it in a few days, but plan on
modifying it before the weekend to see if I can get it to do a complete circuit.

Thanks for responding!

Dave K



Message has 1 Reply:
  Re: "Big Blue" Pneumatic 4-6-4 engine and tender
 
(...) Another idea (and I'll stop after this, I promise!) would be a bit harder to implement, but may work in the end. How about removing one of your trailing pairs of wheels and redesign in a fourth pair of drivers, making your train from a 4-6-4 (...) (20 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)

Message is in Reply To:
  Re: "Big Blue" Pneumatic 4-6-4 engine and tender
 
(...) That is just too cool. I've watched the movie many times now, I love the sounds your engine makes! I hope you're able to get it to run reliably, I'd love to see it on a loop of some kind. I have a suggestion for the performance issue, but I'm (...) (20 years ago, 1-Nov-06, to lugnet.org.ca.rtltoronto, lugnet.trains)

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