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Rusting Hulk
Samba Member
Joined: August 20, 2002
Posts: 646
Location: Malvern UK
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 Posted: Sun Dec 04, 2005 2:55 pm Post subject: 25hp generator pulley |
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I'm asking on this forum to get a pic of a 25hp pulley but the engine i'm building is for a 55 and i'm not sure of the type of pulley to use on the generator, i have a three piece 36hp pulley with the fat lip on the outer half of the pulley. But i'm thinking it should still have the thin lipped 25hp pulley. I have a 54 hand book and it shows pics of the thin slot generator with round regulator with a 25 hp pulley.
Any thoughts help with pics greatly appreciated
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UZI
Platinum FUBU
Joined: February 08, 2002
Posts: 13335
Location: phila-DELFT-ia
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| Posted: Sun Dec 04, 2005 3:17 pm Post subject: |
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simon, how detailed do you need?
i could have a close-up for you tomorrow
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EverettB 
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Joined: April 11, 2000
Posts: 71496
Location: Phoenix 602
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RareAir
Samba Member
Joined: May 11, 2002
Posts: 14577
Location: 18 miles North of the border
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| Posted: Sun Dec 04, 2005 6:26 pm Post subject: |
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| If you're using the thin-lipped pulley, then you'll need the 36mm nut. Both of which is correct for a Pre '55 motor. The lower crank pulley should also have no lip, as opposed to a curved lip pulley which was introduced in 1956 to coincide with the newer fat-lipped generator pulley & 21mm nut. |
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Rusting Hulk
Samba Member
Joined: August 20, 2002
Posts: 646
Location: Malvern UK
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| Posted: Sun Dec 04, 2005 11:09 pm Post subject: |
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Uzi, could you get me a picture of the three pieces apart so i know what the front/back and the hub look like, i think i have the parts but need to compare with something.
thankyou
Simon
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EverettB
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Location: Phoenix 602
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johnshenry
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Joined: September 21, 2001
Posts: 9407
Location: Northwood, NH USA
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| Posted: Mon Dec 05, 2005 5:19 pm Post subject: |
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Rusting Hulk
Samba Member
Joined: August 20, 2002
Posts: 646
Location: Malvern UK
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| Posted: Mon Dec 05, 2005 11:05 pm Post subject: |
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John thankyou very much, exactly what i wanted, and i think i have one.
Simon
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SplitPersonality
Samba Member
Joined: September 26, 2004
Posts: 631
Location: Norway
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| Posted: Mon Apr 28, 2014 12:37 am Post subject: |
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Ole thread I know...but still:
Where can I buy the puller-tool to get the original thin lip 25HP crank pulley off in the correct manner? |
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Robert Chambers
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Joined: August 11, 2005
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SplitPersonality
Samba Member
Joined: September 26, 2004
Posts: 631
Location: Norway
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| Posted: Wed Mar 04, 2015 5:08 am Post subject: |
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Regarding early generators:
The change from 36mm to 21 mm nut on the pulley was mid-1955.
When was the change from "thin lip" pulley to "deep draw pulley"....but maintaining the big nut on both? |
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EverettB
Administrator
Joined: April 11, 2000
Posts: 71496
Location: Phoenix 602
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| Posted: Wed Mar 04, 2015 10:12 am Post subject: |
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Looking at progressive refinements, this is the only thing I found:
21 Dec. 53
Beetle: 1-0575415 695 282
Bus: 20-069409 695 356
Industrial: 122-019 888
Pulley
Now: 1.25mm sheet metal
Formerly: 1.0 mm thick
This is also the change date for 36hp engines.
Note: This doesn't sound right to me as I thought 54s and 55s has the thin lip lower pulley too but I don't see another entry.
And this is a late-1955 bus engine, engine # 20-1251855 (December, 1955)
I see that RareAir above said it changed for 1956.
I could not find any other information on the change.
Other stuff (upper pulley changes)
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