What was the outcome of the titanium frame design and were some
preliminary details produced on CAD.
Andre Barnes.
Mechanical engineer.
Cad engineer / draftsman.
Design engineer.
Newbie Unicyclist.
The thread sort of died on us. We came to conclusion on what we wanted out of the frame, but no one was actually able to draw up some CAD drawings. I would have loved to attacked the project more than with words, but aside from contacting and communicating the peopel at Airbourne, my CAD skills were none.
I’d like to learn some basic CAD stuff if anyone knows of a good free cad program. I think there are a lot of them out there, but I don’t know the first thing about CAD, so I wouldn’t know which is a solid application.
My dad tried to learn CAD, but he had been drafting for so long that working on paper was still faster for him. Technophobia rules.
But why bother planning and sketching when you can raid your local salvage yard, get some metal, and go hog wild? If it breaks, you can be all like “Dang! I should have at least found a mechanical engineer to draft me up some blueprints.” But if you take time to plan it, you ain’t takin’ time to ride it! Leave the thinking to the pros, that’s what I always sometimes say!
-Darrell
Re: Ti frame design/CAD drawings
> The thread sort of died on us. We came to conclusion on what we wanted
> out of the frame, but no one was actually able to draw up some CAD
> drawings. I would have loved to attacked the project more than with
> words, but aside from contacting and communicating the peopel at
> Airbourne, my CAD skills were none.
Generating the plans isnt a problem that can be done and e-mailed
within 48 hours.
My thoughts on the way to go about this is as follows:
Due to the cost of titanium and its manufacture it has to be right
first time (second at a push) therefore a physical design of the frame
is the first requirement, ie. crown detail, seatpost size, length of
fork, etc.
A design criteria will also be required, ie. maximum weight of rider,
height of maximum drops taken, any other suspected forces on the frame
(side force, torsion) maximum allowable flex, maximum allowable
torsion, etc will also be useful to select the grade of material.
This information will need to be presented to someone (preferably
engineers at the manufacturer) to do stress calculations against the
properties of the material to keep the amount of material to a minimum
(its no use having a frame than can withstand 100ft drop thats heavier
than your cro-mo uni.)
If they are really nice people they will come back with a workable
design with suggested tube sizes, thicknesses, based on the original
preliminary detail.
Then from there a cost of the finished item can be generated.
If you want some prelim’s drawn up send me an e-mail with the basic
info.
Just as a thought has anyone used titanium hubs or cranks as these
seem to be a weak piont in the Muni world, I know they are available
to cyclists.
Why have a super strong frame if the rest of the uni will bend and
twist??