[Boatanchors] Bristol wrench 75A4

[WA5CAB at cs.com]

Natan,

The GC (General Cement) set of L-shaped Bristol wrenches should include one 
the same size as the 62.  But have you carefully looked at the set screw to 
make certain someone hasn't replaced it with an Allen or even a slotted set 
screw?  I've run into cases (BC-348's or 312's) where the knobs had a mix 
of Allen and Bristol screws.  Indicating probably some of the knobs weren't 
original to the set.  Also, in if I recall correctly two of the almost 
smallest sizes, the wrenches come in both 4-flute and 6-flute.  Check that, too.

In a message dated 5/25/2009 9:24:13 AM Central Daylight Time, 
W5UQ at verizon.NET writes: 
> My 75A4 tuning knob comes off with Xcelite 99PS-62 spline screw-driver.
> Anyway, a number 62 works. 
> I found that if I looked down the hole with a flashlight and gauged the 
> size I need, that worked.
> Otherwise, one thinks the spline is too small and goes for larger. But 
> it is a very small size that fits.  In my set, it is the next to the 
> smallest.
> 
> (just quoted what is on the plastic box for Xcelite 99PS-60 Spline 
> Screw-driver Set)
> 
> Bob  W5UQ  Tampa
> 
> Natan Huffman wrote:
> >Dear Friends,
> >
> >After purchasing two "complete" set of Bristol wrenches to be used with 
> my
> >75A4, I have yet to find one that fits correctly.  Can anyone tell me the
> >number of the correct Bristol Tool that is needed to remove the tuning 
> knob
> >(4:1 spinner) on a Collins 75A4.  I believe they are identified by 
> numbers.
> >
> >Thanks all,
> >
> >Natan W6XR
> >
> >Freeville, NY
> 

Robert Downs - Houston
wa5cab dot com (Web Store)
MVPA 9480