Re: SV: SV: oooooppppssss

["erik kump" <ebkump-at-hotmail.com>]

Frederick,
So you are running on 2 18V cordless drill battery packs? How long can you 
run on one charge? Timewise, I mean.


>From: "Tholander" <fredrik.tholander-at-telia.com>
>Reply-To: tanks-at-rctankcombat.com
>To: <tanks-at-rctankcombat.com>
>Subject: SV: SV: oooooppppssss
>Date: Fri, 6 Jun 2003 20:37:27 +0200
>
>
>
>Jaysen,
>
>As you're still in the planning stages as I understand it, perhaps you
>ought to reconsider your choice of powerpack? During the design of our
>tanks, we(me and my friend Christer) did some calculations regarding rpm
>and ratio's. But we were very uncertain over the amount of torque
>needed.
>So we did some trial and error development and would probably have
>continued with that if not Joe Somner on this list had been able to
>advice us to use cordless drills.
>I managed to lay my hands on a pair cherap cordless drills, complete
>with Hi and Low gear and all. They are 18V, max 16,5Nm each and you even
>get the charger and the battery included in the package along with
>something that can be tweaked into a speedcontrol complete with forwrad
>and reverse. In my case I paid just aroundf 60US$ each if I remember
>correctly.
>
>The weight also needs to be kept down, the target weight for my M1 is
>20kg/45lbs, with a set of batteries.
>
>Christers tank, the only one yet driven under power, has a max speed on
>flat road of approx 9-11mph based upon estimates made from the following
>videosequence:
>
>http://temp.panvision.com/christerolsson/video/MOV00326.MPG
>
>The Jag in background is very close to 5m long, so you can estimate the
>speed based upon that.
>
>So my advice to you would be to consider if possible to change to some
>powerpack giving similar performance.
>
>Best regards
>
>Fredrik
>
>-----Ursprungligt meddelande-----
>Från: tanks-admin-at-rctankcombat.com [mailto:tanks-admin-at-rctankcombat.com]
>För Jaysen Hayes
>Skickat: den 6 juni 2003 02:22
>Till: tanks-at-rctankcombat.com
>Ämne: Re: SV: oooooppppssss
>
>You read my mind....I am looking for the right gears...however..without
>having the gearbox yet, or any physical dementions..its a little
>rough...lol...but I would be happy with 4 or 5 mph.
>
>I plan on making my structure as light as I can...and perhaps less
>weight will equal more speed, who knows...
>
>Thank you for the compliment on my page.  If there are any other details
>that might be of interest, or that I overlooked..please let me know and
>I will post them...
>
>JD
>
>Tholander wrote:
> >
> > Your page looks great I must say, really easy to find the info. Just a
> > comment regarding the speed of your upcomng tank. My recommendation
> > would be to consider to alter the final drive ratio so that you can
> > achieve at least twice the speed predicted. 3mph might be sufficient
> > when you do combat but when driving on your own, a little more speed
> > certainly enhances the driving experience a bit.
> > Actually when I think of it, it can't possible do any harm having more
> > speed available even during combat....
> >
> > Good luck with your Pershing
> >
> > Fredrik
> >
> > -----Ursprungligt meddelande-----
> > Från: tanks-admin-at-rctankcombat.com
>[mailto:tanks-admin-at-rctankcombat.com]
> > För Jaysen Hayes
> > Skickat: den 5 juni 2003 06:41
> > Till: tanks-at-rctankcombat.com
> > Ämne: Re: oooooppppssss
> >
> > laminated 1/4" ply and fiberglass...lol
> >
> > ray schwartz wrote:
> > >
> > > so what are you planning on building your hull out of ???
> > >
> > > On Wed, 04 Jun 2003 21:19:04 -0500 Jaysen Hayes
> > <scalemaster-at-charter.net>
> > > writes:
> > > >
> > > >
> > > > Was so anxious forgot to include the url...lmao
> > > >
> > > > http://scalemaster.netfirms.com/pershing.htm
> > > >
> > > >
> > > > enjoy
> > > > JD
> > > >
> > >
> > > "they that can give up essential liberty to obtain a little
>temporary
> > > safety deserve
> > > neither liberty nor safety"
> > > benjamin franklin,historical review of pennsylvania ,1759
> > >
> > > ________________________________________________________________
> > > The best thing to hit the internet in years - Juno SpeedBand!
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>

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