Subject:
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Re: Props for Hovercraft
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Newsgroups:
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lugnet.technic
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Date:
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Fri, 7 Feb 2003 04:46:59 GMT
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Viewed:
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1676 times
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You inspired me to tinker a bit, but I am still unsuccessful. Putting gears
around the
z24 to help stabilize it is problematic because, at standard LEGO distances,
there is
sufficient space between the gears to allow the z24 (and the prop axle) to
wobble.
I thought about coming up with a gear combination that might mesh snugly
enough to
eliminate the wobble, but I'm concerned that such an arrangement would have
as
much friction as I am trying to eliminate. Also, the amount of structure
that needs to
be added to mount these supporting gears would be precisely where you don't
want
extra structure: in the airstream. Apologies for my "negativity," but I
don't consider
this part to be functional; it is merely ornamental.
Mark Haye
"Eric Sophie" <mylegomaster@aol.com> wrote in message
news:H9x19K.Hpw@lugnet.com...
> Ho Mark, This presents a significant problem. I always engineer my
> gear-trains to include a double "axle grab" on both sides of a gear so the
> gears flow smoothly. Without that extra stud worth to help anchor the
> Airscrew, yep could be a problem. But not to worry, If you sandwich gears • on
> top if the Airscrew's z24 and then drive it with another gear below, it
> should stablize it. However, it's just theory and I'd need to experiment
> with it myself. Still you make a good point.
>
> e
>
> http://members.aol.com/mylegomaster/index.htm
>
>
> In lugnet.technic, Mark Haye writes:
> > I have this part (from <set:8855>) and I have been unsuccessful in my • attempts
> > to power it to any significant speed. The problem is that the prop and • z24 gear
> > are permanently molded to a 3L axle which goes through a 1x4 Technic • beam.
> > Having only one bearing point (the 1x4 beam) for the prop axle allows too • much
> > "wobble." Trying to drive it at high speed results in LOTS of friction • (in my
> > experience). I have not had the heart to cut it apart and modify it to • try to
> > overcome this problem.
> >
> > HTH,
> > Mark Haye
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Message has 2 Replies:
 | | Re: Props for Hovercraft
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| (...) What about attaching another 24t along the same axis with a friction pin, then having an axle in that? You'd probably need to drive both to stop rotation at the friction pin. ROSCO (22 years ago, 7-Feb-03, to lugnet.technic)
| | | Re: Props for Hovercraft
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| Question: Since I don't know what the z24 exactly looks like on the prop, is it just like the regular gear? Reason I say, I'm curious, because you could use the holes on the gear to pin another z24 to it and then you'd have a place to mount another (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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Message is in Reply To:
| | Re: Props for Hovercraft
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| Ho Mark, This presents a significant problem. I always engineer my gear-trains to include a double "axle grab" on both sides of a gear so the gears flow smoothly. Without that extra stud worth to help anchor the Airscrew, yep could be a problem. But (...) (22 years ago, 7-Feb-03, to lugnet.technic)
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