From: xenolith@optusnet.com.au   
      
   On 15/5/20 2:37 pm, Arlen Holder wrote:   
   > In response to what Xeno  wrote :   
   >   
   >> Not generally if a suitable bead lubricant is used.   
   >   
   > Hi Xeno,   
   >   
   > Thanks for your input, as I hadn't really thought about it all that much.   
   >   
   > Thinking about it further, I'm gonna agree with you even though I intimated   
   > otherwise prior.   
   >   
   > When I set a bead, I lubricate with dish detergent, and then remove the   
      
   I would avoid dish detergent if I were you. It generally has a pH that   
   is on the acidic side and you don't want that lingering on your steel   
   rims. I used to use Ph balanced pure soaps that have a pH around the 7   
   mark. You allow one bar to soak in some water until it turns into a gel,   
   then apply it to the bead area.   
      
   FWIW, I don't use dish detergent to wash my car either, preferring to   
   use car specific wash products that are neutral pH - definitely not   
   caustic.   
      
   > valve core, and then I screw on a modified airgun so that I can press the   
   > trigger to get air in but I don't have to hold it as it screws perfectly   
   > onto the Schrader valve.   
   >   
   > When the bead pops for the second or third time, and I check that it's   
   > even, I stop pressing the trigger.   
   >   
   > Then I pop the air hose off the modified airgun, and then I quickly twist   
   > the modified airgun off the Schrader valve and in that process, the air   
   > starts shooting out of the now wide-open valve stem (because there is no   
   > core inside).   
   >   
   > I quickly grab the bare core of the Schrader valve and screw it in, using   
   > two hands, one holding the valve core (so it doesn't fly away) and the   
   > other hand twisting the special core driver tool until the air flow stops   
   > and the valve core is seated lightly.   
   >   
   > After that point is the first time I actually _check_ the air pressure,   
   > where, almost always, I have to put a bit of air _in_ to get it to the   
   > desired 30 to 45 psi.   
      
   It is roughly what I used to do.   
   >   
   > Given that's the process, I actually have no real idea _what_ the pressure   
   > was at the moment the bead seated itself. :)   
      
   In most cases, I found it to be less than 50psi   
   >   
   > It could be 40 psi; it could be more, it could be less.   
   > o It never really mattered to me before, so I didn't even think about it.   
   >   
   > I'm aware that tire burst pressures are likely far higher than my 220VAC   
   > 20-gallon Sears Craftsman compressor can go to, so I'm not worried all that   
   > much about the tire exploding in this process of just seating the bead.   
      
   About 125psi is the limit of most portable compressors. Some shop   
   compressors can go a bit higher but neither will achieve the burst   
   pressure of a tyre.   
      
      
   --   
      
   Xeno   
      
      
   Nothing astonishes Noddy so much as common sense and plain dealing.   
          (with apologies to Ralph Waldo Emerson)   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)