[modeleng] Re: Full size problem!
- From: "Phill Smith" <steam@xxxxxxxxxxxxxx>
- To: <modeleng@xxxxxxxxxxxxx>
- Date: Thu, 13 Oct 2005 23:46:08 +0800
76 x 3.2 350MPa pipe, will do the job nicely. Not quite 6mm deflection,
which is less than the recommended limit of 1 in 250mm. The stress is only
120 MPa, which is a little over a third of the yield stress. Plenty big
enough......
Phill.
----- Original Message -----
From: "Peter Sheppard" <psbr20252@xxxxxxxxxxxxxxxx>
To: <modeleng@xxxxxxxxxxxxx>
Sent: Thursday, October 13, 2005 4:15 PM
Subject: [modeleng] Full size problem!
> One for the mechanical engineers amongst you!
>
> I'm now on bio diesel with my car. I buy it in 45 gallon drums from a
> local supplier. He loads it into my landrover using a forklift, I get it
> out of the landie at my end using some very dubious means using a lifting
> table scaffold board a acr jack and axle stands (that would probably give
> the H&SE apoplexy!)
>
> I have an electric hoist (not yet fitted) but after two nights ago it soon
> will be! It is designed to sit on a tube (and thus can slide). The span
> of my car port is approximately 3m, the maximum load of the hoist is
> 400kg.
>
> I don't know the weight of 200 litres of cooking oil, but if it were water
> it would weigh 200kg, so the hoist will cope with it.
>
> If we assume that the design is for a maximum load of 400kg (the hoist
> maximum), what sort of diameter tube will I need to prevent it flexing in
> the middle, assuming a 3m span? I'll then check the size of the aperture
> on the hoist and may have to reverse the question......
>
> Cheers
>
> Peter
>
>
>
>
>
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