Scales: Was:Re: [rebel-builders] list of items for a Moose
Posted: Sun Feb 19, 2012 4:06 pm
LOL! Christmas presents!
OK, if you want to do bathroom scales and have a bit of time to kill & like making gadgets (sounds like a homebuilder!) then you could make up a set of lever arms to reduce the load on the scale and use just one scale per wheel. Probably cost more than buying 7 sets of scales but then there's the educational factor!
W
____________|_________________________
A Lever Arm |
|-------------------------| Bathroom Scale
Basically you want to portion the load so that the scale sees a weight proportional to the wheel weight divided by the lever arm ratio and the rest of the lever setup sees the rest of the load. Above, the pivot at A would see 2/3 the weight of the wheel (W) and the scale would see the rest (1/3W). From Charlie's measurement the 3:1 ratio sounds about right.
Cheers,
Dave
Charlie Starr wrote:
David A. Ricker
Fall River, Nova Scotia
Canada
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
OK, if you want to do bathroom scales and have a bit of time to kill & like making gadgets (sounds like a homebuilder!) then you could make up a set of lever arms to reduce the load on the scale and use just one scale per wheel. Probably cost more than buying 7 sets of scales but then there's the educational factor!
W
____________|_________________________
A Lever Arm |
|-------------------------| Bathroom Scale
Basically you want to portion the load so that the scale sees a weight proportional to the wheel weight divided by the lever arm ratio and the rest of the lever setup sees the rest of the load. Above, the pivot at A would see 2/3 the weight of the wheel (W) and the scale would see the rest (1/3W). From Charlie's measurement the 3:1 ratio sounds about right.
Cheers,
Dave
Charlie Starr wrote:
--Forget about scales. It will be a couple years minimum, before you need them. Usually scales can be found through local builders, an EAA chapter or a FBO. If all else fails, I bought seven bathroom scales at Wal-Mart for about $9 each (3 for each main gear and one for the tail wheel). After weighing again before paint, I found they were within 3 pounds (total) of electronic scales. Gave scales as Christmas presents to my fat friends last year.
Charlie Starr - N96CS
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------
David A. Ricker
Fall River, Nova Scotia
Canada
-----------------------------------------------------------------
List archives located at: https://mail.dcsol.com/login
username "rebel" password "builder"
Unsubscribe: rebel-builders-unsubscribe@dcsol.com
List administrator: mike.davis@dcsol.com
-----------------------------------------------------------------