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Hello,
I am attempting to build my own version of a Super Car, and I need some help.
I don't actually own a super car, and I only own one "large" Technic set. So,
I'm asking for some general advice on how to make a two to three speed
transmission with just standard gears and axles. That's all. I have tried a
few designs, only one of which has worked. It was very poorly designed and
jammed often, though. Thank you!
Greg "I'm goin' down to Cow Town; the cow's a friend to me.." Majewski
http://www.geocities.com/TimesSquare/Dome/1888/abs.html
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> I am attempting to build my own version of a Super Car, and I need some • help.
> I don't actually own a super car, and I only own one "large" Technic set. • So,
> I'm asking for some general advice on how to make a two to three speed
> transmission with just standard gears and axles. That's all. I have tried • a
> few designs, only one of which has worked. It was very poorly designed and
> jammed often, though. Thank you!
Look at the instructions for the 8860 Auto Chassis. It has a tendancy to
jam as well but it's a really nice piece of engineering.
Will
Visit the Lego Beach Fire and Rescue Service
http://www.simflex.com/users/willhess/
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Take a look at my car:
www.technic-uk.co.uk
and click on Neil's Technic creations. Although I do have the new supercar, the
car in the article was built with much older Lego. It has a 4 speed gearbox,
with H-pattern gear selector. The pictures will give you an idea of the engine &
gearbox, but if you want some more specific details (eg diagrams etc) then email
me and I'll attempt to show you how I did it. I have built a variety of
gearboxes for cars over the years, and this one is the first I have been
satisfied with!
Neil
Greg Majewski wrote:
> Hello,
> I am attempting to build my own version of a Super Car, and I need some help.
> I don't actually own a super car, and I only own one "large" Technic set. So,
> I'm asking for some general advice on how to make a two to three speed
> transmission with just standard gears and axles. That's all. I have tried a
> few designs, only one of which has worked. It was very poorly designed and
> jammed often, though. Thank you!
> Greg "I'm goin' down to Cow Town; the cow's a friend to me.." Majewski
> http://www.geocities.com/TimesSquare/Dome/1888/abs.html
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In lugnet.technic, Greg Majewski writes:
> Hello,
> I am attempting to build my own version of a Super Car, and I need some help.
> I don't actually own a super car, and I only own one "large" Technic set. So,
> I'm asking for some general advice on how to make a two to three speed
> transmission with just standard gears and axles. That's all. I have tried a
Similar to the 8860 and 8865 designs, here's a very simple and
compact one:
As a carrier, have two 'beams' with 3 holes with 1.5 stud spacing
(i.e. 2 standard beams, any size, and a 1-beam between them)
with 5 studs of space between them. In the center, put a
12-axle such that it sticks out 4 on one side and 1 on the other,
while an 8-gear, a 16-gear, and another 8-gear are centered
in the 5-wide space. On the longer end, you have 3 studs
worth of axle for the shifter handle.
On the outside holes, put (diagonally symmetric) 2 axles,
length 8 or more, in such a way that they won't shift,
with a 16 gear, one space, 2 8-gears, and another space
on one side and reverse (sp,8,8,16,sp) on the other.
Between these input/output axles, you now have ratios
of 4,1,1/4. Using 24/8 gears rather than the above,
you get 9,1,1/9; with 24/16, you get 9/4,1,4/9, which may be
the best setup. This symmetric setup may be extendable,
but it will get rather large, while having the center axle
change ratios on both sides makes the design sturdier
and close ratios generally easier.
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Check my page. I have wanted to do the same thing, but didn't know how. So
I looked up a model in the encyclopedia and go the general idea. The
transmission I made doesn't need a clutch, because when it shifts, it has a
little delay between the gears.(a nice feature, but not built with it in
mind, it came when I was trying it). You can put pneumatics on it, and it
will shift for you. To see the page, go to
<http://www.lcs.net/users/oglewood/lego/trans.html>. It is in LDraw format,
and when you finish you can see the rest of my models.
--
Legoer,
Adam Ogle
G. Benedikt Rochow <rochogb@eng.auburn.removethis.edu> wrote in message
news:Fn25rs.Gu1@lugnet.com...
> In lugnet.technic, Greg Majewski writes:
> > Hello,
> > I am attempting to build my own version of a Super Car, and I need some • help.
> > I don't actually own a super car, and I only own one "large" Technic set. • So,
> > I'm asking for some general advice on how to make a two to three speed
> > transmission with just standard gears and axles. That's all. I have tried • a
>
> Similar to the 8860 and 8865 designs, here's a very simple and
> compact one:
>
> As a carrier, have two 'beams' with 3 holes with 1.5 stud spacing
> (i.e. 2 standard beams, any size, and a 1-beam between them)
> with 5 studs of space between them. In the center, put a
> 12-axle such that it sticks out 4 on one side and 1 on the other,
> while an 8-gear, a 16-gear, and another 8-gear are centered
> in the 5-wide space. On the longer end, you have 3 studs
> worth of axle for the shifter handle.
> On the outside holes, put (diagonally symmetric) 2 axles,
> length 8 or more, in such a way that they won't shift,
> with a 16 gear, one space, 2 8-gears, and another space
> on one side and reverse (sp,8,8,16,sp) on the other.
> Between these input/output axles, you now have ratios
> of 4,1,1/4. Using 24/8 gears rather than the above,
> you get 9,1,1/9; with 24/16, you get 9/4,1,4/9, which may be
> the best setup. This symmetric setup may be extendable,
> but it will get rather large, while having the center axle
> change ratios on both sides makes the design sturdier
> and close ratios generally easier.
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"Adam Ogle" <oglewood@lcs.net> wrote in message
news:Fn7KKH.EtA@lugnet.com...
> You can put pneumatics on it, and it
> will shift for you.
Can you explain this statement please? It sounds like you have a way to add
pneumatics that turn your 2 speed transmission into an automatic
transmission. If so I'm sure that many people would be interested -- a
working all-mechanical lego automatic transmission is something that many
people seem to have attempted, but that no one has really made work.
alex
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I just got my new Digital Camera (Kodak DC240). I will try to build the
transmission with the pneumatics. Anyway, I made a thing that turned it
from straight to turned, geared down, and back to straight. It just adds a
way to shift it, and it also could be done with a motor. If you made a way
to watch the motor RPMs, and control a 4-speed trans (1-2-3-R), it would be
automatic. If you know any place online to where I could see a Auto trans.,
maybe I could build it.
--
Legoer,
Adam Ogle
alex wetmore <alex@phred.org> wrote in message
news:945982075.109442@phred.org...
> "Adam Ogle" <oglewood@lcs.net> wrote in message
> news:Fn7KKH.EtA@lugnet.com...
> > You can put pneumatics on it, and it
> > will shift for you.
>
> Can you explain this statement please? It sounds like you have a way to • add
> pneumatics that turn your 2 speed transmission into an automatic
> transmission. If so I'm sure that many people would be interested -- a
> working all-mechanical lego automatic transmission is something that many
> people seem to have attempted, but that no one has really made work.
>
> alex
>
>
>
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