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D7 front mudguard bracket measurement (solved!)
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NeilB
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January 22, 2020 - 8:06 pm
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Sorry, strange one so bear with me!

My D7 came with 4 separate front mudguard stays, like the pastoral model (apparently), but after blasting and painting I found some original one-piece boomerang shaped stays for cheap and they turned up today.

So anyway, after straightening them up, they seem good and evenly shaped, however the holes don't line up with the brackets on the mudguard. I'm not sure if I need to curve the stays more, if the mudguard needs to be adjusted a bit, or something else. 

If someone with a D7 could measure bolt hole centre to bolt hole centre from the front bracket on the mudguard to the rear one, that would be super! 

Thanks 🙂 

P.S. The 4 other stays will be available soon if anyone needs them

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Sponge
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January 23, 2020 - 9:35 am
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Hi Mate, 

I fell into this trap a while back and it cost me a lot of money to rectify it. I would advise you to check that your mudguard is actually a D7 mudguard !! Reason is that the B175 front guard looks the same but is actually different ( the mounting straps are different lengths and sizes),  to accommodate the different forks and stays.   If you have a B175 front guard it will be a real challenge to fit.  

As far as I am aware the D7,D10 and D14 guards are all compatible. 

Also be aware that the C15 and B40 front guards are also similar but different. They have no front mounting points.

Hopefully helpful

Sponge

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NeilB
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January 23, 2020 - 8:43 pm
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It's probably only 1/4" or less off, although I haven't attempted to fit it to the bike yet, it could be miles off when the bolts are in at the bottom! Are there any obvious ways of telling the difference?

As I say it does have the 4 individual stays so I can definitely get it to fit one way or another, I'd just like to get it back to standard where possible, other than the D10 engine parts ha! 

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mike p5xbx
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January 23, 2020 - 11:21 pm
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The 4 individual stays were on the B175 and sports models
will not be a straight fit on the D7 lightweight forks

D? - D10- D14 Bantams 350 AJS -500 Triumph http://bsanotru.....lfire.com/

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Sponge
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January 24, 2020 - 9:12 am
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If the stays came with the mudguard guard then you will need some fabrication and engineering in order to get it to fit because it was designed to fit the B175 (very different) forks. 

Best option might be to obtain a D14 front guard and stays. 

Sponge

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bantammad
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January 24, 2020 - 2:58 pm
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Hi bantammad ere this might resolve your mudguard issue l use child stair gate, the tube section makes nice mudguard stays cheep as chips I’m tight have fun Les 

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chickensoup
Bolton, Greater Manchester
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January 24, 2020 - 8:57 pm
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Hi,

I have a 1966 D7 with, as far as I know,  a correctly fitted and original front mudguard and stay brackets ( See photo )

The measurements as follows :

Front of mudguard to the fork dimension = 260mm

Fork to rear of mudguard dimension = 235mm

I would reckon if you have single stays of these lengths ie 2 @ 260mm and ** Please log in to view **, that would do the trick also.

Hope this helps you...

Nick20200124_203910.jpg20190710_181123.jpg

sp_PlupAttachments Attachments

1950 BSA D1 Plunger   242 UYW

1966 BSA D7  LBF 62 D

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NeilB
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January 24, 2020 - 10:14 pm
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Thanks Nick, I'll have a measure, could you also measure front bracket of the mudguards to rear bracket of the mudguard, in a straight line under the curve if that makes sense? I think my bike is going to be about the same colour as yours, it just doesn't show up the right colour on my pics. 

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chickensoup
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January 25, 2020 - 8:23 am
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Hi again,

Just been out with the tape measure again. The distance across the front and rear brackets, from hole center to hole center is 450mm.

hope-that-helpsNick

1950 BSA D1 Plunger   242 UYW

1966 BSA D7  LBF 62 D

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NeilB
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January 25, 2020 - 9:39 am
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Perfect, thanks Nick! Mine is 440 so it appears something needs a little straightening!

The individual stays were fitted to either side of an approx 2" mending plate with a centre hole to mount it to the bottom of the forks, but I'll fit the proper stays although it does mean more painting!

Neil

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NeilB
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February 3, 2020 - 6:52 pm
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Figured I'd pop back to this to give the answer, turns out it was very simple...the stays aren't flat!!

So, with the stays flat, not only is the measurement off, but they also don't fit onto the bike and the mudguard, so after some judicious kinking of the stay, they now fit fine.

Simple solutions are sometimes the most difficult to see! doh

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