B50 Fork stanchion length??

Here you can talk about all kind of TECH for the B50 B44 B25 And Other BSA unit Singles

Moderator: minetymenace

Post Reply
User avatar
Didlydon
>60
>60
Posts: 60
Joined: Tue Nov 15, 2016 12:27 pm
Location: Broadstairs, Kent

B50 Fork stanchion length??

Post by Didlydon »

Hiya All... Plodding on with my B44 Victor Special Street Scrambler project...comin' on nicely thanks! Well...sometime in the past it's been fitted with the later B50 alloy forks. I had a surprise when I unscrewed the fork top cap nuts to discover, what look like 2 engine valve springs on top of each main spring! So, checking the main spring lengths it appears longer stanchions have been fitted - something like 2" over, but without the matching springs that's for sure! So, I guess this is a mod done for off roading ground clearance, as that is where my bike was used before I got it.

A couple of questions spring to mind...As I don't intend off roading, whats the likely effect on handling with longer forks? Good or bad?

Are the appropriate length springs available for these longer stanchions? Or I could turn up ally spacers to fill the gap where the bloody valve springs are!..

Could someone confirm for me please the overall length of standard early B50 forks?

Cheers All! Happy New Year! :thumb

Don.
User avatar
Didlydon
>60
>60
Posts: 60
Joined: Tue Nov 15, 2016 12:27 pm
Location: Broadstairs, Kent

Re: B50 Fork stanchion length??

Post by Didlydon »

Oh yes.... I forgot to mention that a 21" front wheel is fitted too.... Great for off-roading I believe... I think the standard 68 model B44 V S had a 19"..... :???:
Jeff K
>1300
>1300
Posts: 1357
Joined: Sun Jul 13, 2014 12:30 pm
Location: Bay City, Michigan USA

Re: B50 Fork stanchion length??

Post by Jeff K »

Back in my youthful days when "chopper"s were all the rage. It was common to use the stock fork springs and just add a "slug" the same length as the fork extension. So 10" over would be a 10" slug. The slug was what every was handy and fit in the tubes, normally a sawed off section of pipe. Think about it, no matter how long they have been extended, the fork up and down travel is the same. You could also go a bit longer with the slug to add preload to the spring, as long as it does not bind up under full load.
Jeff
midgie
>1300
>1300
Posts: 1300
Joined: Fri Jul 30, 2010 7:50 pm
Location: church crookham hants

Re: B50 Fork stanchion length??

Post by midgie »

the length of the std b50 stanchion is 21.88"
User avatar
minetymenace
Gerry1
Gerry1
Posts: 7731
Joined: Wed May 26, 2004 1:00 am
Location: On the edge of Salisbury Plain, England
Contact:

Re: B50 Fork stanchion length??

Post by minetymenace »

Ah, long hair, tasseled leathers, 10" overs and ape hangers.....all gone now, all gone!
There is no evidence to support the notion that life is serious.
Abyssinian Wire-Haired Tripehounds Gnash.
User avatar
Didlydon
>60
>60
Posts: 60
Joined: Tue Nov 15, 2016 12:27 pm
Location: Broadstairs, Kent

Re: B50 Fork stanchion length??

Post by Didlydon »

Cheers Midgie....but as the forks are still together I can't measure them.... Got a an overall length anyone? :grin:
User avatar
Mark Cook
>1400
>1400
Posts: 4771
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Contact:

Re: B50 Fork stanchion length??

Post by Mark Cook »

Around 30"
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)
User avatar
Didlydon
>60
>60
Posts: 60
Joined: Tue Nov 15, 2016 12:27 pm
Location: Broadstairs, Kent

Re: B50 Fork stanchion length??

Post by Didlydon »

Thanks Mark. As I thought...that's the same as my Trident which use the same spring. So I've got 2" over length stanchions. I reckon I'll just pop it all back together & see what she goes like on the road & change it if need be as no one has commented as to the likely handling issues!
BSA_WM20
>900
>900
Posts: 924
Joined: Sun Dec 24, 2006 2:09 am
Location: Sydney Australia

Re: B50 Fork stanchion length??

Post by BSA_WM20 »

Do you enjoy navigating by the stars cause those extra 2" might have you looking at them more than one might want to. :lol:
Bike Beesa
Trevor
fastharry
>140
>140
Posts: 148
Joined: Tue Dec 14, 2010 9:40 am
Location: Leicester England

Re: B50 Fork stanchion length??

Post by fastharry »

The effect will be slower steering which = a more ponderous front end, It will increase the already long rake angle, in theory you would want to raise the rear the same amount to keep things the same as factory, except a higher seat height. None of this would be an ideal street mod in my opinion. I would not recommend it if you want your steed to steer reasonably well.
User avatar
Mark Cook
>1400
>1400
Posts: 4771
Joined: Fri Sep 10, 2004 8:45 pm
Location: CCM Britain HQ Goldthorpe South Yorkshire
Contact:

Re: B50 Fork stanchion length??

Post by Mark Cook »

Midgie hates this ;-)
DH10.jpg
CCM Britain motorcycles and spares manufactured exclusively by PES

+44 (0) 1709 894192
http://www.ccm-britain.co.uk (online shopping experiance)
User avatar
Didlydon
>60
>60
Posts: 60
Joined: Tue Nov 15, 2016 12:27 pm
Location: Broadstairs, Kent

Re: B50 Fork stanchion length??

Post by Didlydon »

Cheers for the comments guys.... Looks like new stanchions - & springs - will be on order soon ...as we've already got a 21" front wheel, the springs are old n saggy & different lengths anyway! Fun & games eh! Busy doing stuff today as the missus is away for a couple of days... Really looking forward to getting this one going again..... :razz:
B44Claus
>180
>180
Posts: 189
Joined: Fri Jul 07, 2006 12:49 pm
Location: Denmark

Re: B50 Fork stanchion length??

Post by B44Claus »

Hello,

There are longer stanchions available made for the X75 Hurricane either 23 1/8" or 24" length. Will they fit the B50 fork legs? Longer springs will be required also.

Brgds,
Claus
B44Claus
User avatar
kommando
>1400
>1400
Posts: 1978
Joined: Mon May 24, 2004 8:41 pm
Location: Scotland

Re: B50 Fork stanchion length??

Post by kommando »

You don't need longer springs, just fit a spacer the length of the extra length over the B50 ones.
Post Reply