Mailing List flyrotary@lancaironline.net Message #33423
From: James Maher <deltaflyer@prodigy.net>
Subject: Re: [FlyRotary] Re: OT: Gardenhose as level
Date: Mon, 28 Aug 2006 13:53:40 -0700 (PDT)
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
I got one of these Zircon levels years ago for only $14 at Home Depot.
Now they sell for over $40.
They are advertised as accurate to +/- 2.25 arc minutes.
Probably better than a bubble level.
Combine it with a laser pointer for distance and you have a very versatile leveling system.
Jim

Heidi Johnson <hjjohnson@sasktel.net> wrote:
Bob, I've always wondered how a laser level could be more accurate than a water level. I'm not disputing the claim but I've never understood how its possible. I'll explain my quandry.. a laser level is only as level as the little bubble will make it. I've found some that aren't even close to level when they 'say' they are. A water level [ all things concidered like bubbles and wind] will sit perfectly level once properly set up, we know that water will seek its own level. I'm not convinced that a laser level is better. Am I missing something??

Curious is all :)

Jarrett

----- Original Message -----
From: Bob Perkinson
Date: Monday, August 28, 2006 1:57 pm
Subject: [FlyRotary] Re: OT: Gardenhose as level

> Finn,
> Spend $35 or $40 at Lowe's or Home Depot and get you a Laser
> Level. The
> time you will save and the accuracy will more than pay for it.
>
> Bob Perkinson
> Hendersonville, TN.
> RV9 N658RP Reserved
> If nothing changes
> Nothing changes
>
>
>
>
>
>
> Only vaugely rotary related...
>
> I'm driving myself nuts trying to build this thing level to within 1/8
> to 1/4" !
>
> I'm using a gardenhose, terminating in clear PVC tubing at each
> end, to
> get reference points at the four corners.
>
> The thing is that the level varies 1/2" or more over hours. One
> end will
> be up, 1/2" over where it was an hour ago and the other end down. Then
> it changes, etc. How can a guy get a reliable reading this way?
>
> Is the friction in the hose too big to reliably use this as a level?
>
> Do I need to terminate each end in funnels to get bigger ambient
> pressure?
> Finn
> (frustrated)
>
>
>
>
> --
> Homepage: http://www.flyrotary.com/
> Archive and UnSub: http://mail.lancaironline.net/lists/flyrotary/
>


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