Subject:
|
Re: 9v Motor Placement Help
|
Newsgroups:
|
lugnet.trains
|
Date:
|
Thu, 15 Mar 2007 00:27:38 GMT
|
Viewed:
|
3937 times
|
| |
|
|
In lugnet.trains, Ross Crawford wrote:
| |
In lugnet.trains, Anthony Sava wrote:
| |
I have a Super Chief that I’ve been taking to TexLUG meetings which
currently has 2 locomotives (A’s) and 7 cars. Each of the locos has a 9v
motor each. I’ve been looking to aquire a third locomotive so I can make a B
unit (to make an A-B-A config) so I can add a third motor to the train and
help save my motors overall.
My question is - which is better?
One motor on each locomotive - 1 on the first A, 1 on the B, and 1 on the
last A
or
Two motors on the B - 1 on the first A and making the second A powerless
I’ve been told by one club they have the motors spread out, but for the only
reason being thats the way they do it, not because its better.
I’d appreciate any feedback. Thanks!
|
With 7 cars, I think 2 motors is plenty, I’d leave the B motorless. When
pulling a longer train, it can be necessary to add a motor in the middle of
the train, because the magnets just aren’t strong enough to pull a long train
(yes there are other non-LEGO solutions to that like
rare earth magnets).
ROSCO
|
Two motors should pull that train comfortably, so long as all the wheels are
rolling freely. I’d put one each on the first two units. A third motor would
be an advantage if your layout has lots of turns.
When adding a third motor, it’s a good idea to think carefully about where to
put it. You don’t want it near the end of a train. Pushing trains isn’t as
efficient as pulling them. Think of it on a plain floor without the rails -
pulling a train makes it go in a straight line. Pushing it is unstable and it
will wave about randomly. On rails, that means more friction from side to side.
But, a motor a bit further down a long train can help with corners, where the
back end of your train can be travelling in the opposite direction to the front.
So, somewhere around the halfway point works well. It’ll still have some
pulling to do, but won’t bunch-up with the units ahead of it.
Jason R
|
|
Message has 1 Reply:
 | | Re: 9v Motor Placement Help
|
| (...) You could also put two motors under one of the A units (I did that with my CNW f-unit, though I can't find any good pictures to prove it). I've pulled over 30 cars with the normal LEGO magnets, but it is pushing the limit of their strength. (...) (18 years ago, 15-Mar-07, to lugnet.trains, FTX)
|
Message is in Reply To:
| | Re: 9v Motor Placement Help
|
| (...) With 7 cars, I think 2 motors is plenty, I'd leave the B motorless. When pulling a longer train, it can be necessary to add a motor in the middle of the train, because the magnets just aren't strong enough to pull a long train (yes there are (...) (18 years ago, 14-Mar-07, to lugnet.trains, FTX)
|
4 Messages in This Thread:
 
- Entire Thread on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
This Message and its Replies on One Page:
- Nested:
All | Brief | Compact | Dots
Linear:
All | Brief | Compact
|
|
|
|
