Thank you Bill
That clears up most of the mystery
I did pretty much the same thing on my gears, But on a larger scale. ;-) (I
like your way better,Its cleaner and looking ,and it much less of a over kill
than what I used , but I just love the look of this chain THIS BAD BOY will not
ever slip!) I will be sending you (all) the pictures of my gears latter today.
(to everyone) Im not doing the same thing as Bill did,Yet. Much of the same leg
work was needed for my project. I was hopeing that Bill had a easer way. ;-)
My projects is NOT done yet, but I can show you the gears now. There will be
more to come on this latter.
Again Awesome work Bill.
Thank you.
C.A.G.
----- Original Message -----
From: Bill Bulkeley <bulke...@mmnet.com.au>
To: legacy-ornamental-mills@googlegroups.com
Sent: Sat, 03 Dec 2011 05:09:49 -0500 (EST)
Subject: Re: Fine Pitches
sorry curt
I thought I mentioned that I faced the
sprockets so to be clear let me explain the exact procedure I
did.
. when I started all the sprockets had a boss
on them which I used to gripped them in the lathe, drilled the center out
till a piece of square tubing that fitted over the legacy square fitted in
the hole. then I put the piece of tubing in the hole leaving it protruding out
the face about a 1/4 inch then welded it in 4 places on the flats of the
square of the tube being careful not to weld right trough the tubing. then
after
that I faced the tubing down till it was flat with the sprocket face. then
I turned the sprocket around and set it up in the lathe and turned only the
boss
away till it was level with the other face of the sprocket leaving the tube
sticking out of this side.then welded the four flats of this side then faced
the
square tubing down to the sprocket face thus producing a thin sprocket with a
square center.
the rectangle hole for the other gear I drilled and
filed the rectangle in a large washer I had then welded that to the end of the
sprocket boss thus making the 2 sprockets line up when both are attached to the
machine. to line up the washer perfectly on the sprocket for welding I marked
the rectangle perfectly on the sprocket first and just lined it up in the
rectangle of the washer clamped it and welded it
and the idler or tension sprocket I did nothing it
just fitted strait on. I put the largest gear on first and cut and joined the
chine till it just fitted the sprockets with out any strain. so it
and each gear after that the adjustment on the existing legacy gear train
too up the slack
and that's it exactly how I made it all
it all took me about 3or 4 hours to
make
I hope this explains it all for you I am not that
good at explaining what is in my head when I get these crazy ideas
Bill
----- Original Message -----
From:curt
george
To:legacy-ornamental-mills@googlegroups.com
Sent: Saturday, December 03, 2011 8:11
PM
Subject: Re: Fine Pitches
Yes that is true, but the hole in the middle of
the sprocket on a bike is something like 1 1/2" that a lot of center that
needs to be filler in. Tim's idea of having a center laser cut would be a
great one for those.
For me the size of the gear is the problem.
Having said that you all should see the gears that I just finished this week,
they are form an auto shop, Timing gears and chain. I know its a huge over
kill, but... making something smaller sounds very nice to me. That's why I'm
so curious about it. Making part to fit the Legacy is not as easy as it may
seem,Yes it can be done, and I've done a lot of it my self. but.When Isee
something that looks good,and works then I want all the info.than I
can get on how do that.
I have to get to work.
have a great day all.
C.A.G.
----- Original Message -----
From:Gary Moshofsky
To:legacy-ornamental-mills@googlegroups.com
Sent: Saturday, December 03, 2011 12:07
AM
Subject: RE: Fine Pitches
I
would think that bike sprockets would be ideal. Thin metal with bolt
areas
to attach to a hub with a square hole. Lots of sizes available and
could be
had cheap from a bike shop used.
From:legacy-ornamental-mills@googlegroups.com
[mailto:legacy-ornamental-mills@googlegroups.com] On Behalf Of Bill
Bulkeley
Sent: Friday, December 02, 2011 8:34 PM
To:legacy-ornamental-mills@googlegroups.com
Subject:
Re: Fine Pitches
yes they would work I knew you guys would have
similar there
Bill
----- Original Message -----
From:Tim
Krause
To:legacy-ornamental-mills@googlegroups.com
Sent: Saturday, December 03, 2011
12:15 PM
Subject: Re: Fine Pitches
Curt, this is not a stretch.
https://www.surpluscenter.com/sort.asp?catname=powerTrans&keyword=PH25 is
one place that I buy from. McMaster-Carr also carries
sprockets. They are regular chain sprockets.
-Tim
----- Original Message -----
From:curt
george
To:legacy-ornamental-mills@googlegroups.com
Sent: Friday, December 02, 2011
4:07 PM
Subject: Re: Fine Pitches
Hello Bill
Can you filling the gaps here?
Where did you fine those gears? and what
are they used for?
I have a number of different sized chains
and gears to match, that I can get my hands onto, but
everything
that I can find is much thicker in the mid. (there is not way,
that what
I have can be modified to be used on the Legacy as is.) Any
info on all
the How's and Why's would really help me out.
Curious minds want to know!
;-)
C.A.G.
P.S. By the
way your use of the duplex gear holder on the Legacy's
bracket/gear
system, is Brilliant!
c.a.g.
----- Original Message -----
From:Bill Bulkeley
To:legacy-ornamental-mills@googlegroups.com
Sent: Friday, December 02, 2011
12:22 AM
Subject: Re: Fine Pitches
the only thing I want to add is if you
all haven't worked it out a 54 tooth will give you the 1/16
pitch..
I was thinking of that guy a while back
who wanted to do wooden endless thread on the legacy witch is
what got
me thinking of this.
also pen turners might like this too for
fine spirals on pens. should fit the revo too as it uses the
same gear
train as the 900
Bill
----- Original Message -----
From:Tim Krause
To:Legacy-Ornamental-Mills@googlegroups.com
Sent: Friday, December 02, 2011
3:18 PM
Subject: Fine Pitches
Posted On Bill Bulkeley's behalf.
Bill came up with an idea to make 1/16,
1/8, 1/4 inch pitch using a chain drive system.
He used sprockets and chain to drive everything. He
used a chain size similar to ANSI #25 chain and welded
adapters on
the sprockets to fit the spindle and acme thread.
The sprockets are in line with each other.
Its not the number of teeth that's
important but the ratio. Working off the leadscrew of
4TPI (1/4 inch pitch) you
can determine the number of teeth on a sprocket. For
examples,
a 18 tooth sprocket on the
spindle and another 18 tooth sprocket on the
leadscrew gives you a 1 to 1ratio, or a 1/4 inch
pitch. A 36 tooth sprocket on the leadscrew gives
you a 2 to1 ratio when used with the 18 tooth on the
spindle which
is 1/8" pitch. You should be able to see how this
works
by now.
To provide tension to the chain, Bill
used a 12 tooth sprocket that he
had that fit the 3/8" shaft of the legacy gear train.
It
freely rotates and the number of teeth does not matter.
Bill thinks this is going to be
good for fine wooden threads and also
for fine turning the machine to get a better
finish. The only draw back
he sees is only RH pitches can be done with these finer
pitches.
I'd like to thank Bill for showing us his latest
work.
-Tim
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