<VV> viton pump cups/crank seals

[J R Read]

Lots, but you are now mentioning the main reason for my concerns.  Has there 
been any adverse reports regarding wear when using the viton crank seals? 
Anyone?  They've been around for a while now, so I'm wondering if any 
problems have been noted.

Later, JR


----- Original Message ----- 
From: "Joel McGregor" <joelsplace at earthling.net>
To: <virtualvairs at corvair.org>
Sent: Thursday, September 01, 2011 7:06 PM
Subject: Re: <VV> [fastvair] Re: viton pump cups


> It seems to me that a crank seal does a lot more moving than anything in a 
> carb.  How many inches per hour would 3500RPM convert to on the crank hub 
> circumference?
> Joel McGregor
> ________________________________
>
>> Hi Dan,
>>
>> But, it also seems that the typical use of viton is in more or less
>> stationary settings like seals, gasket, hose, etc.
>>
>> Accelerator pump cups are in a moving setting and in contact with the
>> metal
>> of the carb - sort of a 'moving seal' if you will. Are there any studies
>> that you might be aware of which would indicate adverse (or non-adverse)
>> effects on the accelerator pump 'barrel' or to the viton itself in that
>> specific (or a similar) setting?
>>
>> Later, JR
>