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Pages: 1 ... 138 139 [140]
2086  Discussion Boards / HO / Re: Telephone Poles on: February 19, 2007, 04:55:15 PM
Pole spacing depends on lots of factors. See how 40 to 60 poles per mile looks on your layout.

Accessory power wire AWG too large for HO scale telephone poles.
2087  Discussion Boards / HO / Re: Circuitron Tortoise on: February 18, 2007, 05:41:26 PM
Rich,
Circuitron Tortoise is Stall type (as Robin wrote) and requires constant power.

If you want to control the Tortoise with a DCC stationary (a.k.a. accessory) decoder, make sure the decoder is designed to be used with it.
2088  Discussion Boards / HO / Re: 1" ez track on: February 18, 2007, 12:30:37 AM
Bachmann list Item No. 44513 as 2.25" Straight Track. There is not currently a 2.5" or 1" E-Z Track piece.

Kevin's statement about the 2" is correct.
2089  Discussion Boards / HO / Circuitron Tortoise on: February 17, 2007, 10:43:01 PM
Quote
BTW; does anyone know the current a tortiose motor will draw?  I lost the specs I had.  Any feedback is appreciated.
Rich
Circuitron Tortoise -- During operation, the draw is approximately 3ma. Stalled it will draw up to  25ma.
2090  Discussion Boards / Large / Re: speed formula/voltage+ a shay on: February 17, 2007, 05:36:18 PM
Quote
A 1:20.3 locomotive is moving a lot slower in scale than even a 1:29 locomotive travelling at the same actual speed would be going in scale....
Matthew (OV)
 
To cover the same distance in the same time
1:20.3 scale is 7 MPH
1:29 scale is 10 MPH
2091  Discussion Boards / Large / Re: speed formula/voltage+ a shay on: February 16, 2007, 11:42:01 PM
You used the MPH formula correctly (6.98 rounded 7.0 MPH).
 
Too many variables to state all Bachmann Large-Scale 1:20.3 38 Ton Shays will be running 7.0 MPH at 10 Volts.
2092  Discussion Boards / General Discussion / Re: Formula for scale miles per hour calculation on: February 15, 2007, 12:58:57 AM

OR  if you don't have a calculator handy Wink

Divide MPH by 5 to give Inches per second.

60MPH/5 = 12 Inches/Second.

Multiply Inches per Second to give MPH.

18 Inches/Second X 5 = 90MPH
Mark, your method works for HO scale only.
2093  Discussion Boards / General Discussion / Formula for scale miles per hour calculation on: February 14, 2007, 05:39:24 PM
The following can be used to calculate scale miles per hour for any scale and any timed length of travel. Best to use a stop watch to time the travel over a measured distance.

L = length of travel in inches
F = scale factor
T = time in seconds for locomotive to travel length.

Scale MPH = ((L x F/12)/5280) x 3600/T

Example: If it takes 5.2 seconds for a HO locomotive to travel over two straight pieces of Bachmann sectional E-Z Track.
L = length of travel in inches: 18 inches
F = scale factor: 87.1
T = time in seconds: 5.2

Scale MPH = ((18 x 87.1/12)/5280) x 3600/5.2 = 17.1 MPH 

---------

To use   Microsoft EXCEL
Cell A1 enter length travel in inches
Cell A2 enter scale factor
Cell A3 enter time in seconds
Cell A4 enter the scale MPH formula  =((A1*A2/12)/5280)*3600/A3

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