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In lugnet.technic, Miguel Agullo writes:
>
> Anybody can come up with a more compact design? Can anybody solve the dual
> speed issue? I could add studs in width (distance between wheels) and one
> stud in height to what already rises above the wheel axle (and maybe another
> stud below). Height is critical, but losing some length is even more so.
Well, I think several people have delved into this, but here's my contribution
http://www.lugnet.com/~469/projects/addsub. It doesn't solve the "dual speed"
problem, but it's fairly small, and can be reduced further.
ROSCO
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In lugnet.technic, Ross Crawford writes:
> In lugnet.technic, Miguel Agullo writes:
> >
> > Anybody can come up with a more compact design? Can anybody solve the dual
> > speed issue? I could add studs in width (distance between wheels) and one
> > stud in height to what already rises above the wheel axle (and maybe another
> > stud below). Height is critical, but losing some length is even more so.
>
> Well, I think several people have delved into this, but here's my contribution
> http://www.lugnet.com/~469/projects/addsub. It doesn't solve the "dual speed"
> problem, but it's fairly small, and can be reduced further.
>
> ROSCO
Thanks a lot, Rosco. I think I'm going to go with Stefano Prosseda's
variation, which you also mention on your webpage
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9341
I clearly didn't quite understand the concept and now see how my design had
way too many gears only to accomplish something totally unnecessary: feeding
input force to both axles of the diffrentials, instead of one axle and the
diff body and using the other axle for the outputs.
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> Thanks a lot, Rosco. I think I'm going to go with Stefano Prosseda's
> variation, which you also mention on your webpage
>
> http://www.brickshelf.com/cgi-bin/gallery.cgi?f=9341
>
> I clearly didn't quite understand the concept and now see how my design • had
> way too many gears only to accomplish something totally unnecessary: • feeding
> input force to both axles of the diffrentials, instead of one axle and the
> diff body and using the other axle for the outputs.
I made also a "one-way" version, it's built in the undercarriage of this:
http://www.brickshelf.com/cgi-bin/gallery.cgi?f=14512
It's basically the one above, but with two gearboxes at the input ports.
In this way, I think the best design it's undoubtly the Doug Carlson's one
http://www.visi.com/~dc/transmission .
ciao
ste
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