Re: Introduction from another newbie [TANKS]

[himself-at-adamwells.net]

From your description, I assume you're referring to leaf springs, which is what 
the fullscale tank used. I decided to use wire wound torsion springs because of 
availibity. I can easily get appropriate springs from McMaster-Carr for a 
relatively inexpensive price.

I've decide I'm not going to brace them against the return rollers as I was 
first thinking, though. Instead I'm going to mount a special post in the hull 
for each one to brace against. Basically they'll be mounted around the axels 
with one leg braced against the post and the other leg acting against the lever-
like suspension arms the roadwheels will be mounted on.

Quoting Michael Kouridakis <mrdingleberry-at-comcast.net>:

> Adam-- Do google search of the front end suspension of a VW Beetle.  If you
> can find an exploded view illustration you'll see  flat plate torsion bars
> stacked and fixed at the center part to prevent the twisting of the bar.
> This could be replicated for your model.  If you can't find it I'll try to
> find my old VeeDub manual and copy it and scan it.  Very simple.
> 
> Mike
> ----- Original Message -----
> From: <himself-at-adamwells.net>
> To: <tanks-at-rctankcombat.com>
> Sent: Monday, December 05, 2005 10:43 AM
> Subject: RE: Introduction from another newbie [TANKS]
> 
> 
> > Well, I've been considering the idea of how to implement a suspension.
> After
> > looking over pictures of the fullscale version, I'm thinking about using
> 90
> > degree free position torsion springs braced against the return rollers (or
> a
> > post for that purpose in the case of the last road wheels, which lack a
> > corresponding return roller). It is a little bit more complex, but should
> still
> > be simple enough.... I'll just have to make sure the springs won't rip the
> > return rollers out of the hull.
> >
> > Quoting Steve Tyng <SteveT44-at-comcast.net>:
> >
> > > Adam wrote:
> > >
> > > > That is a good point, Steve. Considering I'm starting with only
> > > > 1/4" plywood and trying to save weight, a suspension would
> > > > probably help the durability of the tank considerably.
> > >
> > > Again not necessarily.  A suspension adds a whole new level of
> complexity
> > > with many more parts that can break.  Your 1/4" birch plywood hull
> should be
> > > more than strong enough for the lightweight tank your envisioning.
> > > Especially if you pay attention to your joints and cover with glass as
> you
> > > mentioned.  With a non-suspended hull the area of greatest stress are
> your
> > > axles and where they attach to the hull.  You just can't get away with
> 1/4"
> > > threaded rod bolted directly to the plywood for example.
> > >
> > >
> > > Steve Tyng
> > >
> > >
> > >
> >
> >
> >
> >
> >
> >
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> 
> 
> 
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