To all considering this heating process. Do not work with hot oil without a thermometer and fire control system. Above 400 degrees F or so many oils can ignite in a flash. Also some aluminium alloys (7075 for example) can lose their temper at temperatures as low as 300 degrees F if heated long enough. Pretty rapidly at 400 F. Any suggestions as to an effective temperature Ken.
Joe
At 10:58 PM 11/13/00 -0500, Harvey M Sachs wrote:
>On the Paramount hubs, and I think it was typical of the era, the right
>flange is threaded on, using the same thread as the sprocket. The left is
>a press fit, as Donald Dundee suggests, so it can be set up with the spoke
>holes between those on the right flange.
>
>harvey sachs
>
>
>At 04:21 PM 11/13/2000 -0500, Donald Dundee wrote:
>>I have successfully removed flanges from three piece hubs to restore, but
>>have found that the process is bothe cumbersome and not economical, given
>>that these hubs are available at lesser cost than the process if you are
>>patient.
>>
>>To remove flanges you have to soak (the flange only) in extremly hot oil
>>and then drive the flange from teh barrel with a dowel/hammer. This is a
>>bench/vice/shop process and not to be attempted without problems on your
>>kitchen table.
>>
>>Reassembly is the same except in reverse. It is a good idea to put a small
>>reference mark on both the flange and barrel for reassemble so that spoke
>>holes are correctly aligned.
>>
>>The flanges should be highly polished before anodizing. Anodized airlites
>>are pretty hubs, even if they were not the best overall. I have seen them
>>in red, green, blue and gold. My '52 Ephgrave path racer has red ones.
>>
>>Good luck,
>>Ken Denny
>>Boston, MA
>>
>>
>>
>>
>>>From: Huthornton@aol.com
>>>To: classicrendezvous@bikelist.org
>>>Subject: [Classicrendezvous] Airlite and Powell hubs
>>>Date: Mon, 13 Nov 2000 16:12:56 EST
>>>
>>>I have some Airlite and Powell hubs in sore need of restoration and
would be
>>>pleased to receive any advice.
>>>
>>>The steel barrels need re-chroming, so how does one get the alloy flanges
>>>off, and are there any special instruction required so that the exterior of
>>>the barrel looks good and the bearing surfaces are durable?
>>>
>>>The Airlite flanges are plain anodized, but these hubs are destined for a
>>>bike which would have had red anodized hubs. Are there any problems with
>>>having them red anodized or would it be better to leave them the way they
>>>are?
>>>
>>>Hugh Thornton
>>>
>>>_______________________________________________
>>
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