Carl -

Dunno about the '5, never got my hands on one. I suspect it is different, may even be synthesized and using an optical encoder. Much better stability spec.

The lever is on the '7 also, but it is not easy to get to. Like most everything else, it's UNDER the DR-7 board.

For your 'C, it may suffer from the "lubed nylon gears" syndrome. Or the rear bearing may just be tightened too much. See:

<http://www.wb4hfn.com/DRAKE/DrakeArticles/PTO/Drake_PTO.htm>


73, Garey - K4OAH
Glen Allen, VA

Drake 2-B, 4-B, C-Line&  TR-4/C Service Supplement CDs
<www.k4oah.com>


[email protected] wrote:
Hello to the group.
Have a TR7 ...mid range serial number.
Without tearing a bunch of stuff apart.....
also have a TR5 and a TR4c, .... the question ...is the pto action on the 7 stiffer than the other two. The 5 is like silk and the 4c feels just a tad stiffer than the 5.
Per the archives  ..the 7 pto is the same as the 4c, is the 5 the same?
Next was a recent write up on an R7 that said there was a mechanical lever to release the gear on the pto to enable a mechanical alignment on the dial. Is that the same on the TR7?
73s  Carl wd8nhk


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