dynodave's BSA info page
update-7 Dec 2008
BSA technical information
356-357-H C6869 cam profiles
These A-10 cam profiles are shown as cam lift, not valve lift.
It includes a Harmon Collins 6869
35678.jpg This chart includes
the profile of the rare 67-358 cam loaned by Brett Mathews.
67-358 polydine profile
BSA cam 67-334 very early A-7 and
A-10
DRAG BSA Vintage A-10 drag race
prep sheet from Norfolk Motorcycle
Lucas Rita ignition curve-BSA A-65
Boyer Ignition curve-BSA/Tri
twin
according to Boyer..... the Norton and Tri/BSA are the same
except for the cable ends.
So the curve is the same for all. NOT GOOD in my book!
Boyer ignition curve-BSA Rocket3/trident
My A-10
roller bearing conversion
Notes and sketches of my roller bearing conversion done January
of 1990
Here are the additional pix involved:added
pix
A10crank.tif
bearing.tif
bush_mod.tif
case_mod.tif
seals.tif
A-10 Single Port Heads &
Dual Port Heads/Manifolds lots of pix (long load time)
click on picture
BSA LINKS
BSA Owners Club of New England
our own regional club
BSA
A10 Super Rockets by Daniel Boss
A-10 tech workings
by BeezaBill
BritBike.com website
back to homepage
MY BSA BIKES
1960/61 Golden Flash Golden
Flash
Bitza from 2 bikes $45 + $100 got me started on this BSA adventure.
It just needs a "longer" GF rear fender instead of the shorter valanced
chrome SR type.
1963 Super Rocket Super
Rocket
Just one of those things I couldn't say no to. I has been worth the
$300. Both chronometrics work, and a few other bits have added to the fun
of BSA research. The front fenders original construction quality (Not it's
present condition) lead me to believe it is genuine BSA yet I've
not seen another like it? Motor locked solid. BIGGEST SURPRISE to
me, 4 forged front engine lugs. Everything else is like regular GA7 frame.
Needs a lot more than a tune up!
1963 Rocket Gold Star
A long time in the making. Way too long!
RGS frame
RGS 4 motor lugs
RGS Brake/Brake light mount/Rearset mount
These two rear sprocket/brake drums are 42Tsmooth PN 67-6149
(1954-55 all A group swing arm, and 1965 A-65) and 46T finned PN
42-6018 (later GS street&scrambler, RGS and RGS Spitfire Scrambler)
RGS brake drum rear - inside & sprocket
size
RGS brake drums rear - fins/no fins
