Sounds like you need a CAD package. Though I haven't used any of
these, here is what I came up with:
A list:
http://www.tech-edv.co.at/lunix/CADlinks.html
Another list:
http://linuxgazette.net/issue54/frost.html
Good luck
Kevin
2008/6/25 <raymond.meyer@???>:
> On Wednesday 25 June 2008 17:15:50 Simon Dales wrote:
>> I have used raw PostScript and LaTeX to draw things in the past. I wrote a
>> package for me to make router templates.
>>
>> For such a simple design then it can be done. My router templates are
>> printed on paper and glued to MDF, then manually cut out and fitted. When
>> they are the right shape I use them.
>>
>> Don't use cardboard because it is too imprecise, if you need to tryout use
>> MDF, and even that is a bit dodgy.
>>
>> Do you know what thread the mech needs?
>>
>> However beware making the hanger too strong. If you have a prang then you
>> will damage the frame, and that is really expensive. The best system is to
>> make then really soft so they bend first. Alternatively learn to ride a
>> bike so you don't fall off.
>
> Oh I think it'll take me longer to learn PostScript and Latex than drawing by
> hand...
>
> Learning to ride trials so that you don't fall off takes many years, and I've
> been learning trials for about 2 months! Which is why I'll ask them to cut me
> 3 spare mech hangers. Well many trials bikes are single speed, but I just
> can't live without the gears.
>
>
