[TowerTalk] substitute for BMW Flex-disc ?

[Michael Tope]

Bert, 

My friend Warren picked one up from a Mercedes-Benz dealer, for 
around $45. The metal inserts for the input and output coupling 
on the Mercedes part are staggered along the axis of rotation so that
there is no interference with the mating flanges (from what Warren told
me, this is not true of the BMW part). We plan to use this one at 
the local club station with an Orion OR-2800 to turn a KLM KT34XA 
stacked over a KLM 40M4 both with HD booms (300 lbs+).

What was your experience with BMW part? We are still trying to 
figure out if this technique is a "feel good" that just looks good
in principle or something that is really going to pay reliability 
dividends.   

Thanks,

Mike, W4EF..............

----------
From: 	Bert[SMTP:k4ar@arrl.net]
Sent: 	Tuesday, February 15, 2000 2:39 PM
To: 	towertalk@contesting.com
Subject: 	[TowerTalk] substitute for BMW Flex-disc ?


Hi All,

I am building another shock-dampener per 
Leeson's "Physical Design of Yagi Antennas"
and was rudely shocked at the price of BMW 
Flex-disc ...$74 !  Last one I bought was $40.

Does anyone know of a inexpensive alternative ?

Thanks, Bert - K4AR

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