Re: Re: Comparing Rubber Batches

From: Fred or Judy Rash <frash_at_chartertn.net>
Date: Fri, 27 Apr 2007 14:04:41 -0400

It has been repeatedly established that Fred Tellier and many others can outwind Fred Rash.
<grin>

Fred Rash

  ----- Original Message -----
  From: ewmonda
  To: Indoor_Construction_at_yahoogroups.com
  Sent: Friday, April 27, 2007 1:50 PM
  Subject: [Indoor_Construction] Re: Comparing Rubber Batches


  Mark,
  When I get home tonight, I'll have to check the 7/02 batch again. I
  didn't quite wind that batch to breaking since I have very little of
  it, but the torque was certainly getting near vertical.

  In a somewhat related topic, any guesses on the relatively large
  discrepancy between the 3/02 energy density on Fred Tellier's website
  and Fred Rash's program posted online on this website? 3850 vs.
  5000 seems pretty significant. When specs for a similar rubber band
  (9.5", 0.6g) are entered in Rash's program, the max number of turns
  is comparable to Tellier's spreadsheet, but the max torque and
  torque at a given number of turns through the cruise are much lower
  (~20%). Can so much variation exist within one batch?

  Eric Monda

  --- In Indoor_Construction_at_yahoogroups.com, "Sandy Schaefer"
  <SandySchaefer708_at_...> wrote:
>
> Eric,
>
> The 7/02 is only batch I can comment on. It is considered a good
  Tan II known for extra turns with fair total energy and less torque
  per turn. Comparing it to 3/02 on Fred's spreadsheet it should
  follow those
> statements in first sentence. Your results of "3450 ft-lbs/lb"
  appear low it should have another 1,000 plus. Check number of turns
  your getting into motor compared to 3/02, it should be more.
>
>
> MS
>
>
> [Non-text portions of this message have been removed]
>



   

[Non-text portions of this message have been removed]
Received on Fri Apr 27 2007 - 11:06:02 CEST