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A10 center stands and springs #751044
09/30/18 10:22 pm
09/30/18 10:22 pm
Joined: Feb 2003
Posts: 2,951
Ohio
R
Rickman Offline OP
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Rickman  Offline OP
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Joined: Feb 2003
Posts: 2,951
Ohio
Well, I've come up against another hinderance to assembling these A10 projects;

Just on general principles, how long overall are the center stand springs? I have one spring off the bike, which is 5.5 inches long, but it seems to me to be well short of the purch...

And I've just noticed the purches on the "early" A7 frames are on the right side, and along about the frames starting with the FA7 designation, the frame purch is on the left.

Even my '55 CB34 frame has the purch on the right...

Since I didn't notice this before, I now need to find 3 A10 center stands with the purches on the right.

I wish I could find 3 side stands, but they are horribly pricey!
Speaking of the side stands, are the side stand purch clamps, the upper part w/o the blade for the stand, are they brazed to the frames, and if so, are they also pinned? I need to replace one because of sliding contact with the ground, and this one will not keep the bolt located; putting the bike on the side stand resulted in almost immediately pulling the bolt through the threads, and the bike almost falling over.

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Re: A10 center stands and springs [Re: Rickman] #751115
10/01/18 4:25 pm
10/01/18 4:25 pm
Joined: Jun 2017
Posts: 43
CALIFORNIA
S
slow learner Offline
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slow learner  Offline
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Joined: Jun 2017
Posts: 43
CALIFORNIA
'55 A10, '56 GS, '60 GS spring is on right on all. 5.5" sounds about right for spring length. Can be a struggle to engage a spring but takes significant spring tension to keep the stand from sagging when in the retracted position. Upper portion of side stand lug is brazed onto the frame rail. Not a bad idea to braze on the bottom portion too. Never sit on a pre-unit BSA when it is on the side stand.


Laurence Luce
Re: A10 center stands and springs [Re: slow learner] #751166
10/02/18 12:38 am
10/02/18 12:38 am
Joined: Feb 2003
Posts: 2,951
Ohio
R
Rickman Offline OP
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Rickman  Offline OP
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Joined: Feb 2003
Posts: 2,951
Ohio
Originally Posted by slow learner
Never sit on a pre-unit BSA when it is on the side stand.

Laurence,
After seeing so very many pre-unit machines sitting on their center stands, with the stand WAY forward of where it should be, BARELY on the last end of the ramp, with both tires/wheels sitting on the ground, AND hearing so very many stories about pinched or crimped frame rails, so that the side stand clamp has to be brazed, or the frame section had to be replaced, it SHOULD be obvious to anyone researching this, that the stands should only ever support the machines' weight, never an unknown weighted and moving, rocking person!

Thanks for the input on the spring length, I have an old drum brake tool that has a spring slide insertion appliance on it that I will use to help keep my fingers away from DANGER!
Now, to find the correct center stands...

Its too bad I never found those two side stands I lost along the roads in SoCal, oh those MANY years ago...

Re: A10 center stands and springs [Re: Rickman] #751453
10/04/18 5:01 am
10/04/18 5:01 am
Joined: Nov 2016
Posts: 144
Queensland, Australia
MikesClassics Online content

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MikesClassics  Online Content

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Joined: Nov 2016
Posts: 144
Queensland, Australia
Just checked a NOS one https://mikesclassiccyclespares.com/product/67-4816/
Measures 5 1/4" on the inside at outer most edges

Re: A10 center stands and springs [Re: MikesClassics] #751738
10/06/18 2:59 pm
10/06/18 2:59 pm
Joined: Feb 2003
Posts: 2,951
Ohio
R
Rickman Offline OP
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Rickman  Offline OP
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Joined: Feb 2003
Posts: 2,951
Ohio
Mornin' Brett,
Thanks for looking and measuring, but if the pic and description I get from the link is correct, I see a plunger frame center stand, and none of my bikes are plungers.

And is the hole in the center tab on the crossbar the spring anchor point? All of the center stands I need have their spring... hooks? on the right side of the right leg of the stand.
Brett


Moderated by  Allan Gill, Jon W. Whitley 


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