I'm sure much of the Bobcat's weight was on the concrete all around the pipe. How about a concrete tank hull??
-Mike M. Message sent by way of mobile device On Aug 6, 2009, at 2:03 PM, Derek Engelhaupt <tan...@gmail.com> wrote: > Well, my track pads are a little under 1/4" ABS plastic. The aluminum > rivets have failed before any of the track pads have broken. The tank > is over 100lbs. and been through some pretty rough stuff. I > definitely > trust PVC to take paintball shots. The 4" PVC drain tube under my > driveway survived a 10,000lb. Bobcat running over it all winter. The > pipe would crack if the Bobcat ran over the edge of it however. Gray > is the cheapest color so that's what I'll go with.... :) > > Derek > T065 > > > On Thu, Aug 6, 2009 at 1:57 PM, Sgt.A.Johnson > <callum.king.underw...@googlemail.com > > wrote: > > Surely with the range of colours PVC is available in you could get > away with not painting it. Want a bright orange tank then buy bright > orange PVC. At school in the scrap box theres some olive drab coloured > PVC. Im not convinced with the strength of plastics when taking > paintball impacts. But then what about that guy i shot at pidleys > paintball. His visor didnt smash so maybe not. > > On Aug 6, 1:28 pm, Cold comfort <gfcr...@hotmail.com> wrote: > > Thanks Derek. > > Greg > > > > On Aug 5, 5:53 pm, Derek Engelhaupt <tan...@gmail.com> wrote: > > > > > > > > >www.interstateplastics.com > > > > > I had found another site that I thought was less expensive, > > > but I can't seem to find the link at the moment. Maybe I > > > bookmarked it at work. > > > > > Derek > > > T065 > > > > > On Wed, Aug 5, 2009 at 2:14 PM, Cold comfort > <gfcr...@hotmail.com> wrote: > > > > > > I have been playing with the idea of using PVC or styrene as > well > > > > Derek. If you don't mind, what is the source for the PVC you > quoted? > > > > Thanks > > > > Greg > > > > > > On Aug 5, 3:27 pm, Derek Engelhaupt <tan...@gmail.com> wrote: > > > > > I'm planning the next tank using PVC sheets. I was going to > use a > > > > > combination > > > > > of ~3/8" and ~"1/8 sheets. I originally tried foamed PVC. > While it > > > > didn't > > > > > work > > > > > that badly, the foamed PVC scars up much easier than regular > PVC. PVC is > > > > > easily glued and strong once glued. Joe's Hetzer is made > from Lexan or > > > > > similar. > > > > > I think that stuff would be harder to work with than PVC and > PVC should > > > > take > > > > > > > paint better (for painting the vehicle color). Using PVC > sheets, it > > > > would > > > > > be about > > > > > $200 for 2 sheets of each size in a 24"x 48" length shipped. > > > > > > > Derek > > > > > T065 > > > > > > > On Wed, Aug 5, 2009 at 10:17 AM, Sgt.A.Johnson < > > > > > > > callum.king.underw...@googlemail.com> wrote: > > > > > > > > MDF is quite flexible aswell ive found in wood tech at > school. With > > > > > > enough elastic bands you can get a pen to shoot right > through mdf and > > > > > > smash it apart so not too sure how well it will stands > upto paintball. > > > > > > although this was only 6mm stuff so you will probably be > using > > > > > > thicker. Has anyone use plastic sheets before to make > panels. i reckon > > > > > > most look too brittle but perhaps a combo of 6mm mdf for the > > > > > > flexibility and 6mm plastick for strength and you should > get a nice > > > > > > composite material > > > > > > > > On Aug 5, 4:11 pm, Derek Engelhaupt <tan...@gmail.com> > wrote: > > > > > > > I used a piece of 3/4" MDF for the bottom of my tank. > You have to > > > > keep > > > > > > in > > > > > > > mind that MDF needs to be pre-drilled for any holes for > screws or > > > > nails > > > > > > or > > > > > > > it will crack off. Screws also strip out pretty easily > so you have > > > > to be > > > > > > > real careful about using them. Once it is wet, it > pretty much > > > > > > disintegrates > > > > > > > and warps. It has to be sealed pretty well. Drilling > has to be done > > > > > > slowly > > > > > > > to minimize chipping on the backside. I always try to > put a scrape > > > > piece > > > > > > of > > > > > > > wood behind anything I drill through to minimize the > chipping and > > > > > > > splintering when drilling. > > > > > > > > > Derek > > > > > > > T065 > > > > > > > > > On Wed, Aug 5, 2009 at 3:54 AM, Tango71 > <tango...@gmail.com> wrote: > > > > > > > > > > MDF is pretty tough stuff. Not as tough as plywood of > the same size > > > > > > > > but still tough. If done right, it can work. You would > need to coat > > > > > > > > the entire tank with epoxy both in and out to protect > against any > > > > > > > > elements you may face. > > > > > > > > > > Weight would be a major issue though. But for a small > simple > > > > electric > > > > > > > > RC tank I don't see why it would be a problem. > > > > > > > > > > On Aug 4, 5:15 pm, "Ben Holko" <b...@holnet.net> wrote: > > > > > > > > > What are people's thoughts on using MDF for panel > work, or even > > > > as > > > > > > the > > > > > > > > structural hull if a thicker grade was used. MDF is > very smooth, so > > > > > > should > > > > > > > > provide a good finish when painted. Does MDF resist > moisture well > > > > > > enough > > > > > > > > once painted? > > > > > > > > > > > I know it's heaveir than ply, but the finish on it > may offset > > > > that > > > > > > > > penalty, and it's still lighter than metal :) > > > > > > > > > > > Ben- Hide quoted text - > > > > > > > - Show quoted text -- Hide quoted text - > > > > > - Show quoted text - > > > > > --~--~---------~--~----~------------~-------~--~----~ You are currently subscribed to the "R/C Tank Combat" group. To post a message, send email to rctankcombat@googlegroups.com To unsubscribe, send email to rctankcombat-unsubscr...@googlegroups.com Visit the group at http://groups.google.com/group/rctankcombat -~----------~----~----~----~------~----~------~--~---
