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EW 350 front brake spring box
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Topic: EW 350 front brake spring box (Read 5015 times)
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watchpaintdry
Member
Join Date: Jul 2014
Posts: 16
Location: new zealand
EW 350 front brake spring box
«
on:
22 Apr 2016 at 09:04 »
Hi, has anyone got pictures and/or sizes of the spring box assembly for an EW350?
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kev
Senior Member
Join Date: Mar 2014
Posts: 173
Location: gold coast
Re: EW 350 front brake spring box
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Reply #1 on:
22 Apr 2016 at 09:52 »
whats a spring box??
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watchpaintdry
Member
Join Date: Jul 2014
Posts: 16
Location: new zealand
Re: EW 350 front brake spring box
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Reply #2 on:
24 Apr 2016 at 00:32 »
It sits on the front forks and acts as a return for the front brake
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Daren W Australia
Master Member
Join Date: Apr 2005
Posts: 629
Location: Sydney Australia
Re: EW 350 front brake spring box
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Reply #3 on:
24 Apr 2016 at 06:08 »
Hi this was on ebay Daren
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too many dougli not enough time!
oily bloke
Senior Member
Join Date: Mar 2009
Posts: 220
Location: Surrey. UK
Re: EW 350 front brake spring box
«
Reply #4 on:
24 Apr 2016 at 08:34 »
I think you mean the part which is the transition from brake cable to rod halfway up the fork. A sleeve /spring assy?
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watchpaintdry
Member
Join Date: Jul 2014
Posts: 16
Location: new zealand
Re: EW 350 front brake spring box
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Reply #5 on:
24 Apr 2016 at 20:44 »
Yes thats right.whats the length of the rod from tip to tip as I am going to have to make that too
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kev
Senior Member
Join Date: Mar 2014
Posts: 173
Location: gold coast
Re: EW 350 front brake spring box
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Reply #6 on:
02 May 2016 at 13:12 »
I,d like to get some sizes as well..is ther any more parts to that item??
I,m going to have to make one
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Chris
Master Member
Join Date: Jun 2004
Posts: 514
Location: Kent, UK.
Re: EW 350 front brake spring box
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Reply #7 on:
09 Jul 2016 at 07:50 »
Hi All
In response to the question above I have prepared a sketch of a typical spring box set of components. These were fited to most Douglas models between 1924 and 1939. I have four machines with spring boxes and they all differ very slightly in detail so I cannot claim originality for any of them . The sketch attached is not fully dimensioned but there is sufficient information to enable understanding of the function and to manufacture a working set of parts. A rear brake spring from several BSA models has been recommended for some time as exactly what is required inside the spring box. This spring should be a nice easy fit inside the spring box body and the diameter of the adaptor where the cable is anchored should be a nice easy fit inside the spring . The lower stepped part of the adaptor should also be a sliding fit inside the body . The nipple should be a good fit inside the bore of the adaptor and the width of the slot in the adaptor and the bore of the upper knurled adjuster a loose fit for the diameter of the Bowden cable inner used. The knurling of the adjuster and its locking ring is straight on some examples and diamond on others. Your choice. Chris.
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Last Edit: 09 Jul 2016 at 15:53 by Chris
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kev
Senior Member
Join Date: Mar 2014
Posts: 173
Location: gold coast
Re: EW 350 front brake spring box
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Reply #8 on:
09 Jul 2016 at 13:35 »
chris
thanks heaps
that drawing is a tremendous help
greatly appreciated
I get my springs from the local building supply....they have a great range
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EW 350 front brake spring box