Today's Message Index:
----------------------
1. 08:39 AM - Chat Reminder for "Digesters" (George Race)
2. 02:12 PM - Reducing a hole diameter? (alternator pulley) (Michel Therrien)
3. 02:41 PM - Re: Reducing a hole diameter? (alternator pulley) (jaybannist@cs.com)
4. 04:26 PM - Re: [Probable Spam] Reducing a hole diameter? (alternator pulley) (Larry McFarland)
5. 04:41 PM - Re: [Probable Spam] Reducing a hole diameter? (alternator pulley) (Larry McFarland)
6. 06:54 PM - Re:Reducing a hole diameter? (alternator pulley) (Michel Therrien)
7. 07:16 PM - Re: Reducing a hole diameter? (alternator pulley) (Ron Lendon)
8. 07:41 PM - Re: Reducing a hole diameter? (alternator pulley) (JohnDRead@aol.com)
Message 1
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| Subject: | Chat Reminder for "Digesters" |
Live Chat Room every Monday evening around 8:00 EDT
www.mykitairplane.com <blocked::http://www.mykitairplane.com/>
Click on the Chat Room link at the top of the page.
George
Message 2
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| Subject: | Reducing a hole diameter? (alternator pulley) |
Hi folks (especially those of you that are machinists ;-)
I made pulley for my alternator from an aluminum plate. I have a lathe, but I'm
far from being a machinist.
I was pretty proud of me until about half an hour ago. I made the center hole
about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much).
Now, the pulley is pretty slack on the shaft. Is there a good way to make
it the proper size (adonizing, other means) that will be reliable... or do I
need to start over and use this one as a failure trophy in my workshop?
Thanks!
----------------------------
Michel Therrien CH601-HD, C-GZGQ
http://mthobby.pcperfect.com/ch601
http://pages.infinit.net/mthobby
__________________________________________________________________
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Message 3
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| Subject: | Re: Reducing a hole diameter? (alternator pulley) |
Michel,
We used to send the new kid to the tool crib to request a hole shrinker.
Just a part of a good education. As for myself, I would proudly display
a custom-made pulley with all my other "trophies". Yes, I'm implying tha
t you have indeed made yourself a "trophy".
And a hint - This probably won't be the last "trophy" you make. Re-making
a part is always easier than making the first botched one. Please don't
be discouraged by this kind of experience. We all do it. Keep after it
and you'll get there, trust me.
Jay Bannister
-----Original Message-----
From: Michel Therrien <mtherr@yahoo.com>
Sent: Sun, Mar 7, 2010 4:08 pm
Subject: Zenith-List: Reducing a hole diameter? (alternator pulley)
Hi folks (especially those of you that are machinists ;-)
I made pulley for my alternator from an aluminum plate. I have a lathe,
but I'm
far from being a machinist.
I was pretty proud of me until about half an hour ago. I made the center
hole
about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too
much).
Now, the pulley is pretty slack on the shaft. Is there a good way to make
it the
proper size (adonizing, other means) that will be reliable... or do I nee
d to
start over and use this one as a failure trophy in my workshop?
Thanks!
----------------------------
Michel Therrien CH601-HD, C-GZGQ
http://mthobby.pcperfect.com/ch601
http://pages.infinit.net/mthobby
__________________________________________________________________
Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your
favourite sites. Download it now
Message 4
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| Subject: | Re: Reducing a hole diameter? (alternator |
pulley)
Hi Michel,
I think I've done this at one time too. The logical thing would be to
cut a larger hole to eliminate the key and do a press fit flanged
insert. Then cut the key again. The second alternative would be to make
a flanged center piece that you could bolt into the pulley
and have the hole and key at the ready on assembly. In the second
alternative, you'd only need to thin the section down and make a
good centering thin flanged insert. Doing anything with welding would
deform the piece, so I'd avoid temperatures that high. Tho a
thermally done interference fit could be useful.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
Michel Therrien wrote:
> Hi folks (especially those of you that are machinists ;-)
>
> I made pulley for my alternator from an aluminum plate. I have a lathe, but
I'm far from being a machinist.
>
> I was pretty proud of me until about half an hour ago. I made the center hole
about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much).
Now, the pulley is pretty slack on the shaft. Is there a good way to make
it the proper size (adonizing, other means) that will be reliable... or do
I need to start over and use this one as a failure trophy in my workshop?
>
> Thanks!
>
> ----------------------------
> Michel Therrien CH601-HD, C-GZGQ
> http://mthobby.pcperfect.com/ch601
> http://pages.infinit.net/mthobby
>
>
> __________________________________________________________________
> Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite
sites. Download it now
>
> ------------------------------------------------------------------------
>
Message 5
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| Subject: | Re: Reducing a hole diameter? (alternator |
pulley)
Hi Michel,
I think I've done this at one time too. The logical thing would be to
cut a larger hole to eliminate the key and do a press fit flanged
insert. Then cut the key again. The second alternative would be to make
a flanged center piece that you could bolt into the pulley
and have the hole and key at the ready on assembly. In the second
alternative, you'd only need to thin the section down and make a
good centering thin flanged insert. Doing anything with welding would
deform the piece, so I'd avoid temperatures that high. Tho a
thermally done interference fit could be useful.
Best regards,
Larry McFarland 601HDS at www.macsmachine.com
Michel Therrien wrote:
> Hi folks (especially those of you that are machinists ;-)
>
> I made pulley for my alternator from an aluminum plate. I have a lathe, but
I'm far from being a machinist.
>
> I was pretty proud of me until about half an hour ago. I made the center hole
about .003 to .004 to large in diameter. (ouch!) (I cut .0015 to .002 too much).
Now, the pulley is pretty slack on the shaft. Is there a good way to make
it the proper size (adonizing, other means) that will be reliable... or do
I need to start over and use this one as a failure trophy in my workshop?
>
> Thanks!
>
> ----------------------------
> Michel Therrien CH601-HD, C-GZGQ
> http://mthobby.pcperfect.com/ch601
> http://pages.infinit.net/mthobby
>
>
> __________________________________________________________________
> Yahoo! Canada Toolbar: Search from anywhere on the web, and bookmark your favourite
sites. Download it now
>
> ------------------------------------------------------------------------
>
Message 6
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| Subject: | Re: Reducing a hole diameter? (alternator pulley) |
Thanks guys,
After I wrote my inquiry, I was thinking of a couple of simpler approaches... Anodizing
puts .001" of material back... which may make the pulley OK....?
Another tought.. but not sure about that one... Putting a layer of JB weld and
back on the lathe to size it properly (should I trust jb weld enough for that
purpose? I know I "welded" my fluting tool for the ribs with that at the beginning
my my project in 1999 and the pins and plates are still in place (and the
tool fell off several times).
If not... I guess I'll just start from another block of aluminum...
----------------------------
Michel Therrien CH601-HD, C-GZGQ
http://mthobby.pcperfect.com/ch601
http://pages.infinit.net/mthobby
__________________________________________________________________
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Message 7
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| Subject: | Re: Reducing a hole diameter? (alternator pulley) |
If it is a permanent mount you can shim the assembly. Use one piece of shim stock
cut to the width of pulley wrapped completely around the shaft except for
the area where the key is.
Or just make another one, it's all about learning anyway.
--------
Ron Lendon, Clinton Township, MI
WW Corvair with Roy's Garage 5th bearing
Zodiac XL, ScrapBuilder ;-)
http://www.mykitlog.com/rlendon
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=289590#289590
Message 8
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| Subject: | Re: Reducing a hole diameter? (alternator pulley) |
Hi Michel;
The first was a learning experience, the second will be
perfect. Have fun.
Regards, John
CH701 - Colorado - Jabiru 3300
Cell: 719-494-4567
Home: 303-648-3261
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