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May 8th, 2022
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L
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SUM TING WONG ?
I have a 1971 FBS that I had ambitions to put the high level pipes back on.
So I got a factory parts book then started trolling all parts sources known to me to acquire the major pieces of this puzzle.
What I have and where it came from:
>LH/RH exhaust pipe set (70-2580/71-2581) sourced from CBS / USA
>"H" connector (70-9698) sourced form Classic Bike Shop / UK
>"Chip Basket" Heat Shield, NOS (70-9716) sourced from private seller /CANADA
>Silencers (71-2564) sourced from Classic Motorcycle Spares / UK

STUPID QUESTION:
Where is this heat shield supposed to bolt to ?
There is a mtg bracket on the LH exh pipe and a mtg point on the "H" connector. Are these the mounting points for the heat shield ?
If so, then either the screw holes in the heat shield are 1" too far apart,or the pipes are 1" too short because there isn't enough pipe adjustment to work.
Is it me ? the parts ? or something else ?
This is getting to be an expensive puzzle and I need some help.
Thanks in advance !

Last edited by Little Doobie; 04/29/22 10:26 pm.

They say every dog has his day..
Trouble is, nobody tells the dog which day it is !

Will work for Guinness , MURPHY's preferred smile
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OK, well I answered my own stupid question by doing a little more detective work.
Turns out, the copy of the 1971 BSA parts book I downloaded has the WRONG part number for the FBS heat shield.
My copy has part # 70-9716 listed as the correct heat shield. It's NOT ! The correct number I found out is: 71-2790
So what's the difference ???
The 70 and 71 shields look the same. BUT there's a difference in the location of the aft mounting point that attaches at the "H" connector... by about 1".
I got to looking at internet photos of various FB Scramblers and where I could zoom in, I looked at the mounting points.
The front mount doesn't change, but the rear spot got moved forward two spaces.
Apparently I'm not the only one to run into this problem, as I saw at least one bike that had an extra gizmo added to make the '70 shield fit on a '71 bike.
It's not real noticeable, unless you know what you're looking at.
Unless I can unload the '70 and find the correct '71 shield, I'll probably do the same thing.
You can all chuckle now smile


They say every dog has his day..
Trouble is, nobody tells the dog which day it is !

Will work for Guinness , MURPHY's preferred smile
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Well'ard Rocker
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No chuckling here, that's just another day in the life of refurbishing a BSA.

I was getting ready to take a closeup pic of my 69 FB exhaust setup when I saw you'd already solved it.

I have no idea of the availability of '71 FB parts. Might want to start planning for what the adapter will look like!!

Lannis


"Never stand and take a charge. Charge them too!"
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The '71 heat shield is more unobtainium than the '70 version.
Small wonder...it was the last year for the FBS and somewhere I read that only 1400 units were produced.
I have an inquiry out to Burton's in the UK , who show it in their parts stock. But that doesn't necessarily mean it's available.
I'm not holding my breath, and an adapter is already being devised.
Now, about matching up that "Etruscan Bronze" paint color.....

Last edited by Little Doobie; 04/30/22 12:35 pm.

They say every dog has his day..
Trouble is, nobody tells the dog which day it is !

Will work for Guinness , MURPHY's preferred smile
Joined: May 2013
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A
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Originally Posted by Little Doobie
Now, about matching up that "Etruscan Bronze" paint color.....

One thing about eutruscan bronze, is it was more Orange than it was bronze. The 72 bikes seemed to be different for the same
“Colour name”.

Some NOS panels appear on occasion. Best bet is to get one colour matched. But for 71, Renault Valencia orange is about right.


Now let’s all have a beer beerchug

68’ A65 Lightning “clubman”
71’ A65 823 Thunderbolt (now rebuilt)
67’ D10 sportsman (undergoing restoration)
68’ D14 trials (undergoing transformation)

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Thanks Allan G.
A P.O. had the bike painted to I suppose the factory color, and a nice job it is too.
Unfortunately, while being transported by the reseller another bike fell against the tank and put a couple of unsightly scrapes/gashes in the otherwise blemish free paint job.
Now my task is to try work a little magic and come up with some touch up paint; as I damn sure don't want to repaint the whole machine !
I reckon I'll take a side cover to a custom paint supplier and see if they can scan it or whatever they do to come up with something close.
If the paint gods are smiling, it will turn out to be a match to Renault Valencia Orange !

Last edited by Little Doobie; 04/30/22 6:30 pm.

They say every dog has his day..
Trouble is, nobody tells the dog which day it is !

Will work for Guinness , MURPHY's preferred smile

Moderated by  Allan G, Jon W. Whitley 

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