Not a good idea. They are attached to the "bottom" to keep the expansion minimized. Turning them around will defeat the purpose of having the invar in the first place.
Chuck WB2EDV ----- Original Message ----- From: "IM Ashford" <[email protected]> To: <[email protected]> Sent: Sunday, July 18, 2010 8:54 AM Subject: Re: [Repeater-Builder] Re: Invar Rods > Just a thought, > > Why dont you turn the pistons around to give you a longer reach? > > Ian > G8PWE > ----- Original Message ----- > From: "Burt Lang" <[email protected]> > To: <[email protected]> > Sent: Saturday, July 17, 2010 4:08 PM > Subject: Re: [Repeater-Builder] Re: Invar Rods > > >> What diameter are the rods? The older Sinclair VHF Hi cans used 5/16in >> diameter whereas the newer cans used 1/4 in daiameter. >> >> burkleoj wrote: >> > Glenn, I need 6 of them for a Sinclair duplexer that I have. >> > >> > Someone cut the rods off when it was originally on a commercial >> > frequency. The rods in my duplexer are so short that it will not tune >> > below 147 MHz before they disappear inside the top of the cavity. >> >> Very common when the frequencies are in the high 160s >> >> > >> > I can get some dimensions for you to see if the ones you have may >> > work. >> > >> > Thanks, Joe - WA7JAW >> >> You can buy invar rod material from some metal suppliers but you won't >> like the price. It normally comes in 12ft lengths but the dealers will >> cut it in half in order to ship UPS. The last time I bought some (around >> 1990) the price was $30/lb. The dealer was Diezel (or Diesel) Metals on >> Long Island somewhere. I still have some left from that order. >> >> FYI Invar is an allow consisting of exactly 35.16% nickel with the >> remainder iron. It is magnetic and will corrode in a damp environment >> leaving a green "rust" on the surface. >> >> Burt VE2BMQ >> >> >> ------------------------------------ >> >> >> >> Yahoo! Groups Links >> >> >> > > > ------------------------------------ > > > > Yahoo! Groups Links > > > -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - www.avg.com Version: 9.0.839 / Virus Database: 271.1.1/3013 - Release Date: 07/18/10 02:35:00
