Ideas for an aluminium beam to copy a "turbosaw"

[agrimog]

alcoa and century are two companys that do extrusions, there are some out there similar to logosols top rails, and the next time your near a fire engine, have a look at the ladder beam on the roof, its a very fancy "t" type section with guide rails on it

[difflock]

Thanks all, could be another summer project(after I get all the other gestating, aborted and still-born summer projects finished)

I was simply looking at "Turbosaws" set-up and cannot see why we are expected to pay £5,000.00 (£4800 +carr) for an extruded aluminium "T" beam and a hinge mechanism, without an engine.

It sure aint Rocket Science.

Regards,

Marcus

[forestgough]

You get some useful ali sections on old stairlifts,i made a logosol type set up with one.

[difflock]

Ah!

My kinda thinking Forestgough.

Thanks

Marcus

[difflock]

Broonie,

Thanks

J Adams can supply, a suitable section at £30.00/£32.50/m run

in 10.5m lengths

Times 2 for stiffness (stuck together back to back)

= £680.00 (VAT incl)

= gulp

+ engine

+ blade

+ various gubbins

Better do a wee drawing before I start spending.

[Rob D]

Let's see some progress pics as you start to build it and get set up!

 

 

 

[difflock]

Ye cud be waiting a year or two.

Based on past experiences.

Still not quite got the daughters en-suite finished after 12 or 13 years.

cheers

& thanks for the interest.

PS

Petrol engine about 25HP (simplest solution)

Or a hydraulic motor driven off a diesel powered hyd pump. (or scrap diesel/hyd powered lawnmower) which could also power a log splitter.

Or a 3PH electric motor, but need a 3ph genny.

Which is it to be?

Currently trying to remember my Uni calcs for beam stiffness/deflection under load.

Prob better finding an intersnot site though

[difflock]

Modulus of Elasticity - Young Modulus for some common Materials

and

Calculator for Engineers - Area Moment of Inertia, centroid, section modulus

and

Wl*l*l/48EI=deflection

 

Which geid me 24mm for 100kg load in the middle o a 10m span(single beam)

And also gave 4mm for 100kg load in the middle of a 10m span(doubled up)

Which should suffice.

 

Which sounds plausible.(to a somewhat failed Civil Engineer)

 

Next, research into the glue to stick the aluminium beams together (Stixall is a starter option) better consult me Ex Loctite senior engineer mate.

Marcus

[SteveA]

Modulus of Elasticity - Young Modulus for some common Materials

and

Calculator for Engineers - Area Moment of Inertia, centroid, section modulus

and

Wl*l*l/48EI=deflection

 

Which geid me 24mm for 100kg load in the middle o a 10m span(single beam)

And also gave 4mm for 100kg load in the middle of a 10m span(doubled up)

Which should suffice.

 

Which sounds plausible.(to a somewhat failed Civil Engineer)

 

Next, research into the glue to stick the aluminium beams together (Stixall is a starter option) better consult me Ex Loctite senior engineer mate.

Marcus

 

You forgot the gaffa tape mate

[agrimog]

two part epoxy thats used in the aero industry, called redux, or rivet them using sold rivets, again aero industry standard