Conference vmszoo::rc

    Kay, you need a Edmunds Scientific catalog. Thats where I got my
    scale, ~$99. I have an extra catalog, if I can root it out. Let
    me know if you want it. My scale has a 1 kg capacity, and I got
    the optional weight set which boosts it to 2 kg.
    Your wife will understand.
    
    Terry
    

    A month back, I got some junk mail from a clearing house. They had a
    scale that measures in grams to 1 Kilo, for $45, + $5 for S&H. Should I
    get it again,  I'll let'cha have it.
    
    ajai
    

    I've survived quite well in this hobby for 40+ years with nothing more
    than a Weight-Watchers scale (and I just recently started using _that_).
    Perhaps a gram or two is more critical with soaring but I can tell you
    that, for my purposes, the last shop tool I'd ever spend $50-100 on would 
    be a precision scale.  Check into the little Weight-Watchers scale...it's 
    small, inexpensive and does a fine job.  We're not talking rocket-science
    here, ya' know. :B^)
						 __
				|      |        / |\	   	       
      	         \|/		|______|__(o/--/  | \	   	       
      | |        00	       <|  ~~~  ____ 04 ---- | --------------------
    |_|_|        (O>o		|\)____/___|\_____|_/	   Adios amigos, Al
      |     \__(O_\_	        |	  |___/	 o	   (The Desert Rat)

I use the weight watcher's scale too, but recently I saw a German
made WW-type scale at a garage sale that went up to, I think, 100
grams full scale.  This is far more sensitive than the standard
WW scale which goes up to a pound, and is ideal for gliders and
small RC.

At the time I passed it up for a dollar, then as I realized what
I'd done I went back to the house to try and get it but it was
gone. 

It's out there though, somewhere.

    Kay,

    There are 7000 Grains to the Pound.  There are 16 Ounces to the Pound.
    There are 437.5 Grains to the Ounce.  There are 28.7 Grams to the Ounce.
    There are 15.244 Grains to the Gram.

    Hope this helps.

    Randy

    P.S.  I always just use a home-made Beam Balance, you know, like the
    kind ol' Miss Blind Justice carries? (really, it's just an old, unused
    spar on which I've found the center of balance) I hang a piece of balsa
    from one end, and then try different sheets until I get one that's a
    close match.  I idea isn't so much that you're looking for the lightest
    wood, afterall, as much as you want to be sure you're evenly
    distributing the weight of the wood in both wing panels, and for that,
    you don't need a Scale at all!

I have been trying to get a good deal on a good scale for some
time now.  I had a couple of food scales from some mall
and they probably cost $20 or more each and they were just
not sensitive enough or accurate enough.

A few months ago I got ahold of the Ohaus catalogue.  They appear
to be the only big name manufacture of scales in the US.

Anyway Dave Walters brought his triple beam balance to the last
DECRCM meeting for show and tell and I was quite impressed.  

Unfortunately Ohaus only sent me the catalogue - no list of distributers.

Edmond's Scientific had them but they were charging slightly more
than list plus $8 for shipping and handling.

So I called Ohaus again and got phone numbers for 3 distributers in
Mass and one in New Hampshire.  I called them all last week and I 
tried to get a break on the price if I could get some friends to go
in on a bulk order.  Most would give a whopping 5% off for 3 or more.
Some wouldn't.  But the outfit in NH gave me the best deal.

List price is $93 for the scale and $24.10 for the optional weight set.

State Scale Co. in Manchester N.H.  will sell the scale for $80 and the
weight set for $20.

I picked one up yesterday.  Nice price and great scale.

Directions follow but call first and ask for Patricia Cunan.

Take the Everite(sp) Turnpike north (the new Route 3) to Exit 7
Warning - there is also an exit 7 in Nashua (not that one).
The ramp puts you right on Route 3A North.
Go 1.5 miles.
There is a Mini-warehouse on your left.
Take the next left.
Beige building on hill behind mini-warehouses.

You want the 750-S0 scale and the 707-00 weight set.
610 gram (1 lb 2 oz) capacity without the weight set.  
2610 gram (5 lb 2 oz) capacity with the weight set.

If you want to save a few bucks you can easily make the
weight set yourself.  Dave did by just putting shot in a
35mm film can and making a hanging handle for it.

fyi there is an optional dust cover #706-00.

Bye          --+--
Kay R. Fisher  |
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Kay, if you got that scale for $80, I'm going to eat those counterweights I
made. That scale was selling for $150 and I thought I had a bargain at $70
used. Grrrrrrr.

        [Check before ordering. Price may have changed. The scale is great
        for hobby shop use, and the results turn out within a fraction of
        what I get from the Ohaus. I carry mine in my brief case all the
        time in case I "accidentally" find myself close to a hobby shop.]
        
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Note 129.3                            BALSA                               3 of 3
CHGV04::KAPLOW "sixteen bit paleontologist"          24 lines  29-APR-1988 10:54
                          -< the perfect balsa scale >-
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        Someone asked about the scale I use for weighing balsa in the
        store before buying. While at home I have an Ohaus triple beam
        balance at home, that is good to .1 gram or better, it just isn't
        practical to carry this around to hobby shops. 
        
        What I have is the Triner Portable Pocket Scale. It will fit in
        your wallet, and is good for 0-4 oz or 0-80 grams. Accuracy at the
        low end is probably to +/- 1 gram, at the high end it may be only
        +/- 2-3 grams. It is good enough to tell if a piece of wood is any
        good or not, buy (or not buy) it, and take it home for a more
        precise weighing. The scale is a flat piece of metal, kind of
        c-shaped. One end has a pointer that hangs free, the middle has a
        finger loop to hang the scale from, and the other end has a micro
        alligator clip to hold the letter it is designed to weigh. It
        easilly holds balsa of at least 1/4", maybe somewhat thicker. 
        
        The scale is available from Triner Scale and Manufacturing Co.,
        P.O.Box 18643, Memphis, TN 38118. Their number is 800-633-5299.
        They cost only $4.20 postpaid in single quantities. TN residents
        add 7.75% sales tax. Quantity discounts are available, as is
        custom silk screening of the plastic case with your logo. 
        
        Standard disclaimer applies. I have no conection with this company
        other than as a satisfied user of their product. 

    As of a few weeks ago the price was still 4.20 each.  They're so neat
    I ordered extras for gifts.

Can someone supply the phone numbers for both

Edmunds Scientific   

and

Ohaus

I really need to get a scale, better than the 1lb WW scale, it effects the min
amount of epoxy you can mix, (Its a function of smallest fraction of hardner you
can measure acurately)  Remember some of the epoxy's like safety poxy needs a
16% hardner +- 5% which is not that much, I think I remembered that I could
measure +- 1/2 ounce and ended up mixing about 8oz of epoxy when I only need
2 oz.  OH well.

I would like to call Ohaus and find a local CO. Dist.

I just want the Edmunds to order some of those X-ray glasses!

        If you are looking for the balance just for mixing epoxy, then
        save your money. Most of the odd mix epoxies give you both the
        percentages by weight and by volume. If not, you need to calibrate
        the volume ratios.
        
        I mix Safe-T-Poxy and other wierd stuff from syringes. You can pay
        thru the nose for them from Sig et. al., or find a local vetinary
        supply place like I did (sorry, mine is in the far out Chicago
        suburbs). These work great! I can mix less than a gram of epoxy,
        using a fine needle and counting drops for the hardener (5.33:1
        ratio). The Safe-T-Poxy is a 7:3 ratio by volume.
        
        After a couple years, the syringes are getting a bit funky, so I
        will trash them and get a new set. I've been paying anywhere from
        $.29 for 3cc sizes up to $.89 for 60cc sizes.
        
        If you really want an Ohaus balance, try checking pawn shops in
        some of the sleazier neighborhoods. If you do pick one up there,
        wash it well to remove any drug residue :-)

    For mixing Saf-T-Poxy, I just made my own simple "balance scale". 
    Just take a dowel, flatten one side so it won't roll on a table,
    then take a pine stick (I used a 1"x2" stick) and balance it on the
    dowel.  Mark the center line, then measure out from the center for
    the proper proportions.  

    Place your resin and hardener cups at the marks (center of cup on
    the mark).  Use a dummy weight to re-balance the scale so the weight
    of the cups don't effect the weight of the epoxy.  Now fill the
    resin cup 1/2 way (or whatever you want - leave room for the
    hardener).  Slowly fill the hardener cup until the scale balances
    again.  Presto!  The exact proportion desired...  Pour hardener into
    the resin cup and mix.

    For almost 100% precision, fill the hardener cup with the amount you
    guess will be required and then dump it back into the container,
    scraping all out that you can.  Use this "almost" empty cup to
    balance the scale before filling both cups.  This is desired because
    this is how much hardener will be left in the cup when you pour
    it into the resin and thus, shouldn't be counted in the weighing.

    Kevin Ladd did something more clever.  He used a plain wooden
    yardstick with 2 holes drilled in the ends.  From these holes, he
    suspended two cups using string and clothespins.  Now, suspend the
    yardstick from the ceiling at the appropriate location in the center
    of the yardstick to get the desired proportion.  Be sure to add an
    extra clothespin or two on the yardstick so that the scale balances
    with both cups empty.

                       _____
                      |     \
                      |      \                          Silent POWER!
      _        ___________    _________   |            Happy Landings!
     | \      |           |  |         |  |
     |--------|-  SANYO  + ]-|  ASTRO  |--|              - Dan Miner
     |_/      |___________|  |_________|  |
                      |       /           |     " The Earth needs more OZONE,
                      |      /                       not Castor Oil!! "    
                      |_____/

        the cups and balance are good when you need to mix an ounce or so.
        The syringes let me mix as small as a gram of epoxy. I don't waste
        all of those cups either, just squirt out what I need on an old
        plastic lid, scrap, or whatever.

    Jeez, is Saf-T-Poxy all that hard to measure?
    It's mixed in 44% / 100% proportions, so what I do is take a small
    clear plastic cup and fill it with as much part A as I think I'll
    need for the job, take another cup and fill it with part B to just
    slightly less than 50% of the part A amount.
    Combine and mix, and your're in business. I've never had any cure
    problems.
    
    Even easier is the West System epoxy, it comes with pumps that
    auto-dispense the correct ratios.
    
    Terry
    

OK Guys, I try to throw in a sample problem to help illustrate something and I
get 1000 answers to the wrong problem....Gust Kidding.....

I like the yardstick Idea!!!

I really would like a scale and need to get one....Still waiting for those phone
numbers.........Kay..........

    I bought a pocket letter scale that weighs up to 4 ounces for 89c at
    Bizmart, the local office discount warehouse.  The first ounce covers
    half the scale, so that it is more accurate for smaller weights.  The
    scale has a clip for holding the letter, balsa, or mixing cup.

    
    
      Edmunds Scientific 
      101 E. Gloucester Pike
      Barrington N.J. 08007-1380
    
      ordering by number
      1-609-573-6250
            547-3488
      fax  609-573-6295
      Customer service
      1-609-573-6260
    
      I have 1989 catalog you may have. send me address
    
      For ohaus scales I would check with:
    
      VWR scientific 
      PO box 232
      Boston mass 02101
      617-461-1880
      800-225-4290
    
        Or:
      
      American scientific products
    
      100 raritan center parkway
      Edison N.J. 08818
      201-494-4000
    
       I can quote you 89-90 prices for specific scales, but there are very
    many of them listed with various prices, nnone of which fit in my
    budget.
    
      At one time "Contact East" carried a small scale, in different
    scales (grams,ounces) This was a lot cheaper than your electronic
    or beam balance type. Now that I recall, it was much like your standard
    fishermans scale.
    
     regards
      kevin p

Ohaus Corporation
29 Hanover Road 
P.O. Box 9000
Florham Park, New Jersey
07932-0900
(201)377-9000


I purchased a model 750-S0 for $80 and the weight set 707-00 for $20
at State Scale Co in Manchester NH. (603)625-8274.

It is a triple beam balance with a capacity of 2610 grams (5lb 2oz) 
with the additional weight set and an accuracy of 0.1 gram.



Bye          --+--
Kay R. Fisher  |
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