A little piece of trivial history......
Dirt Bike Magazine always claimed to have invented the 'modified
rear suspension', in about '74 some time or another. When suspension
changes came, we were all moving the shocks forward on the swing
arm, or mounting them cantilever to increase the travel. That, and
some obvious shock spring & dampening changes. I modified all my
YZ's. The difference was amazing, going from maybe 4" of rear
travel, to better than 6".
Interesting, that Dirt Bike Mag, did a test & write up in early
1972, on the new 250 Stormer that AJS came out with that year. The
motorcycle shop I raced for carried AJS, Greeves, Norton, Bultaco,
among some others too.
Anyway,,,,in the dirty bike article, they had a pic of the rear
shocks & swing arm, and a caption which said, "We noticed the
Stormer handled really well in the whoops. Maybe the rear shock
being mounted forward on the swing arm had something to do with
that."
Well duh!
So sure Dirt Bike, you invented it......over two years after AJS
did.
It appeared AJS, didn't know what they had created!
Everybody else, including and especially Dirt Bike Mag, didn't
either.....for over two years.
Notice where the shocks are mounted on this '72 Stormer, compared to
the '74 YZ250A!
Other Bill
On 11/5/2022 4:11 PM, mike allen wrote:
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??? ??? I got to ride more then my buds with the Husky's, CZ's
Maico's', Bultaco's & Ossa's. I let a Pursang get away &
a Matador also . The 2 that bug me the most still to this day
was the
??? ??? 305 Superhawk & the Triumph Cub . Had a bud who's
brother had a AJS Stormer , that thing was a screamer when? it
ran . Another bud with a Greeve's . He had a hard time popping
wheelies with that heavy front end . There's a few vintage dirt
bik mags from ENgland that are a great memory booster to read
when you can find them .
??? ??? animal
On 11/5/2022 3:20 PM, Chuck Peterson
wrote:
Oh my gosh, somebody of my Vintage. I had a I
1968 Yamaha 250 DT1 Enduro. Now that¡¯s old. Others had CZ,
Jawa, Penrod, Husky.
On Sat, Nov 5, 2022 at
12:05 PM Bill Armstrong <
bill_1955@...>
wrote:
Classic bike! I started racing with a '72 DT2MX250
and got a MX250 when they came out. Didn't have the
MX250 for long, since the YZ250& 360A's came out
later in '73, so I got some of those as soon as they hit
Tucson.
MX250 had transmission problems, at least, if you race
'em hard. Mine blew up twice. It became pretty much?
expected. Probably held up a lot better for plain ol'
desert ridin'.
All were before anyone discovered suspension with
travel. MX250 had the rear shocks with the extra
reservoir on 'em, I remember that.? The big suspension
changes started in '74.
Hope you get your 250 restored, and post some pics as
you get 'er done!
Other Bill
On 11/5/2022 10:45 AM, mike allen wrote:
??? ??? Sounds like a super neato project , I'm
getting ready to build my machine room inside of my
shop & it would be great to see / hear more
about your overhead project . I'm partly disabled
??? ??? & anything to help in heavy lifting is
a blessing . I still have my 1973 Yamaha MX250 ,
though its in boxes waiting for the proper star
alignment for the rebuild . Watch some of the
vintage
??? ??? moto cross on? . Those old bikes with 4" of
suspension , those racers were real men !!!!!!!!
& the ones from the late 50's - early 60's on
the big British bikes , those guys were real tough !
??? ??? animal
On 11/5/2022 3:05 AM, steve nicholson wrote:
I think I've used my bandsaw more in the last
couple of weeks than the whole time I've had it, a
new blade did wonders to speeding up the cuts too.
I'm making a over head rail system to move tooling
and material between bench, lathe and mill,
planning for my old ago when it becomes a strain
to fit a large 4-jaw chuck or move machine vice
between mills!
Once the rails are up I can move the new lathe
into position and get back into working on
projects again. I have a couple of bikes on the
project list to restore/get going again too.
Those old two strokes are collectable items now,
nice to know your friend has had the same bike all
it's life. Lots of people had them and are now
wishing they kept them, hence going up in value!
Yes my saw is very similar to yours.
On 5/11/22 14:22, John Vreede wrote:
My
pleasure to be of assistance Steve.
Its
a long?time since there's?been any activity on
this site and I admit to taking a break from
work on the 4x6's.??
I've
been helping a friend bring his Mach III
Kawasaki back to life.? He bought it new in
San Francisco?in 1969 when he was at Stanford,
and?won't part with?it in this life. He met
his wife because it broke down in Montreal,
has road rash on the tops(!) of the handlebars
and passenger?grab rail from sliding along the
freeway upside down.? So many memories. It
runs now and we're attending to cosmetic
issues. Great to be part of.
Your?saw?looks
like mine, which?just?has a model number -
UC115 - and no other distinguishing marks.
Taiwanese mnfr from 1987 - jv.
On Sat, Nov 5,
2022 at 10:50 AM steve nicholson <
steve@...>
wrote:
Well it has only taken 2 years for me to
find a good enough reason to make a table
for use with the bandsaw in the vertical
position AND sort out the table alignment.
Thank you John, I can confirm that
fitting a large shim between the top of
the guide arm and the frame casting solved
the table being square to the blade. I
haven't bothered with fitting set screws
at the moment, I don't move the lower arm
so the shim will work fine for now.
I've attached a photo of the current
small table I've made. It is 6mm (1/4")
stainless (roughly 100mm x 80mm), the
inside edge is angled to the blade and the
outside edge is parallel with the blade. I
can use the saw in the horizontal and
vertical positions with the table in
place. I had to grind a small amount off
the front of the angled edge to clear the
frame in the horizontal position (my wood
prototype cleared but may have been
warped).
The idea of the small table with the
angle on one side, is to allow a larger
table with locating guides/rails to slide
on and lock into place with the tapper on
the small table (still to be tested).
I mentioned the table alignment problem
to a friend with a similar bandsaw, he
checked his and said his was the same, he
is keen to make a small table and fix his
alignment now he has seen mine.
So thank you again John Vreede for all
you help and knowledge you share on these
bandsaws.
Steve
On 23/09/20 22:23, Steve Nicholson
wrote:
Thanks for the information John, I'll
take another look at the arm and try a
packing shim to see how that works for
me. Probably be next week before I get a
chance to look at it properly.
Thanks again and have a wonderful day
all.
Steve
On 23/09/20 4:45 pm, John Vreede
wrote:
Arghhh..... Wrong
way round!.
Sorry Steve I got up this morning early
to write the previous post before going
on my regular Wednesday walking group
and marked up the sawframe casting to
photograph it for you and got it
backwards.
I will be putting the setscrews in at
the bottom of the casting (where the
circle with the dot is in that photo),
where you
should need to put the grub-screws in at
the top, not me.
I moved the bottom of my guide arm out
<1mm, I suggest you trial adding
about 1.5mm of shim between the arm and
the casting at the back of the slot as
shown in the photo attached.
If that squares up your table then you
can drill & tap
Sorry for the confusion - jv