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fitting decoder

hi.. how do i fit a decoder to a hornby class 37 with a x337 motor

joseph37

Posts: 8 posts

koo9

Posts: 290 posts

I think koo9 has it right. Although the Class 37 seems t ocome in many guises, they all seem to have a 3-pole ringfield motor and so installation is as koo9 says, or similar to the Hornby HST, which you can find at http://www.hornby.com/hornby-dcc/decoder-installation-guides/
You

might also check http://www.hornbyguide.com/item_menu.asp and put Class 37 in model/search and you'll be able to find your particular model and its servie sheet (NO 105 or 210 covers them all I think.

and thanks for all the fish

Fishmanoz

Posts: 4954 posts

It's always useful if you give the R number.

Get off the line Bobby.

poliss

Posts: 4972 posts

Joseph,

If it is the X337 power bogie with an X03/X04 motor then it is not a Ringfield. These are dated back to 1968 Triang Hornby. If it is the X04 motor service sheet http://www.hornbyguide.com/service_sheet_details.asp?sheetid=144 The service

sheet for the power bogie http://www.hornbyguide.com/service_sheet_details.asp?sheetid=126 These are more awkward to fit a decoder. If you have given the correct info does the bogie look like this?
http://www.ebay.com.au/itm/ws/eBayISAPI.dll?ViewItem&_trksid=p4340.l2557&item=150780309771&nma=true&rt=nc&si=lRky6Mhxi5Q7aYhPHe2eg97wHOc%253D&orig_cvip=true&rt=nc


Now

not 100% sure on this., both brushes needs to be isolated, to do this the brush spring needs to be insulated (heat 1.5mm shrink tubing will do) both sides.
Orange decoder wire soldered to the Right Brush tab.
Grey decoder wire soldered to the Left side

brush tab.
Red decoder wire to the Right side wheel pick up.
Black decoder wire to the Left side wheel pick up.
The orange/brown capacitor needs to be removed....

Guys please correct if wrong!!!!!!!! as mentioned not 100% sure.

You

would need a decoder with at least 1.25 amp continuouse and a 2 amp stall.

If by chance is your loco a Hornby R751 Class 37 later that 1978
Service sheet http://www.hornbyguide.com/service_sheet_details.asp?sheetid=23 If it is this one then it is

a 3 pole Ringfield Motor. Easy to convert.



Yojic

Posts: 9 posts

joseph37

Posts: 8 posts

the r number is ..r751

joseph37

Posts: 8 posts

Joseph,

I posted earlier with links but the moderators are withholding at the moment. If it is the Old Bogie with the X04 motor, these have a spring bolted on the top of the bogie and clips the the brushes in place either side pointing downwards(brushes

are horizontal). One side is insulated and the other is not. The pick ups either side of the wheels are conected at the top either side as well. Service sheet 69 Is that correct?

Yojic

Posts: 9 posts

whoops mistake the brushes are vertical, the springs travel down the horizontal the clip the brushes in place.

Yojic

Posts: 9 posts

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joseph37

Posts: 8 posts

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