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| | |-+  Bachmann N 30, 45, 60 and 90 degree crossing lengths.
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Author Topic: Bachmann N 30, 45, 60 and 90 degree crossing lengths.  (Read 7245 times)
Joe Satnik


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« Reply #15 on: September 23, 2010, 01:12:36 PM »

Dear James,

I went back to the early postings in this thread and used your original caliper (length) measurements of the various crossings.

For the 17.5" Radius curves, I ended up with strleg lengths (4x) of:

90 degrees: 16.9375"                                 or 16-15/16" (same).

60 degrees: 10.103625 - 0.776 = 9.327625" or 9-5/16"

45 degrees: 7.248675 - 0.872 = 6.376675" or 6-3/8"

My chart shows tan(15) = 0.26795 :

30 degrees: 4.689125 - 1.291 = 3.398125" or 3-13/16"

It's a little bit overkill to use that many digits.  You could probably get away with 1/4" slop in those lengths.   

It's nice to know what they should be, though.

Hope this helps. 

Sincerely,

Joe Satnik

 

 

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If your loco is too heavy to lift, you'd better be able to ride in, on or behind it.
James in FL

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« Reply #16 on: September 23, 2010, 08:54:57 PM »

Thanks Joe,

Overkill most definitely.

IMO rounding to 2 digits, behind the decimal,

should be OK.

Thanks again,
James in FL

« Last Edit: September 23, 2010, 09:23:51 PM by James in FL » Logged
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