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looks like there were 3 diff swingarms for pre oif a65, for years 62-4, 65-8, 69-70, no details yet other than mounting part(s) diffs for 65-8 vs 69-70

https://www.draganfly.co.uk/index.php/bsa/bsa/a50-a-a65/1967/category/271-swinging-arm


https://www.draganfly.co.uk/index.php/bsa/bsa/a50-a-a65/1970/category/347-swinging-arm


i'm gonna focus on 67 cos thats what i have




i don't have many of those skills, or experience, in making a change, first thing most folks look for/at is what options & info is out there, having access to info allows easier decision making to then move forward with,


if you google xs650 swingarm swap, there is tons of available info, along with other makes & models vs practically diddly for a65,


ran across some stuff tho, an oif a65 deal

http://www.bikebound.com/2015/08/11/1972-bsa-thunderbolt-custom-hill-climber/


high end

http://www.malarkeyengineering.co.uk/bsa-a65


vs home brew

https://www.ebay.co.uk/itm/1969-BSA-Thunderbolt-A65-R7-413-swing-arm-extended/291049576678?hash=item43c3e818e6:g:hWYAAOxydlFSr111


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i'm looking for all dimensions like these

http://www.xs650.com/threads/swingarm-pivot.35933/#post-363215

xs650 - Pivot Tube:

ID - 16.02 mm - (0.631")

OD - 21.95 mm - (0.864"


norton mk3 spindle OD

https://www.oldbritts.com/13_100005.html

Swingarm Pivot Spindle, MK3, .8745" O.D.


a65 pre 69 "Spindle Diameter: 5/8" (16mm)"

https://www.feked.com/bsa-swinging-arm-spindle-solid-type.html

5/8" = 0.625

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some of the options for xs650

http://www.motolanna.com/ourshop/prod_2637748-Swingarm-Aluminum-Alloy-SuperLite.html

key point, the SR500 and XS650 swingarms have the same pivot dimensions

http://www.motolanna.com/ourshop/prod_448876-Swingarm-Aluminum-Alloy-SuperTuff.html


other stuff

https://www.ebay.com/itm/XS650-xs-650-75-84-swing-arm-under-brace-weld-on-kit-1-joe-wiseguy-/263209242491


https://www.ebay.com/itm/XS650-xs-650-75-80-84-drum-brake-swing-arm-powder-coated-braced-new-bushings-/263121267436


https://www.ebay.com/itm/XS650-xs-650-swing-arm-stretch-and-under-brace-weld-service-xs400-rd350-sr500-/391850435325


https://cognitomoto.com/products/xs650-weld-on-swing-arm-extenders


http://www.xs650.com/threads/b-1982-3-25-extended-swingarm-125-b.42154/


diy jig

http://xs650temp.proboards.com/post/29281/thread


it would be sweet, if a xs650  swingarm swap was doable via some cheap easy mod,


pretty sure the yam tx750 swingarm,  bit bigger, beefier & longer is a direct bolt in for the 650 frame


some mods with a kz1100 conversion,

https://www.kzrider.com/forum/11-projects/599144-another-kz1100-cafe-streetfighter-build#684560

luv this guy, sez in the thread "This is the first engine I've ever worked on, so any tips would be very appreciated" lol


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