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Who peeked in my sketch book!??!
TheGecko - 17/2/04 at 03:09 PM

Was having a browse of http://www.xtr2.net/ and found this photo of the chassis.


The resemblance to my frame design (notably the side pods and dash area) is startling!

I suppose there's only so many ways to skin a cat but still....

I think I'll just take it as an endorsement of my design

Dominic


kb58 - 17/2/04 at 04:23 PM

Ya know, I used to see car designs I thought were a little too similar too. Given two humans as passengers, and that it will be mid-engine, and constructed of mild-steel tubing, it "sets the cast." That is, there really aren't many ways to build one given the same components, and yes, they're going to look very, very similar.

Having said that, after looking closely at the two, I see a ton of differences. Virtually none of the tubes are in the same place. A vaguely similar outline, but very different tube placement makes me think no one copied anything.


[Edited on 17/2/04 by kb58]


suparuss - 17/2/04 at 08:11 PM

my design is quite similar too, but different cos its more of a lemans replica than a seven, but its basicaly the same design parrameters and same design concepts, hence pretty much the same end product.


TheGecko - 18/2/04 at 12:51 AM

Having re-read my original message and some replies I suppose I should clarify.

I don't think there's any copying going on (in either direction!). It's just that, after looking at so many mid-engined chassis that take a completely different approach to mine, it's a bit of a shock to see one that's quite similar. I was really starting to doubt the validity of my design approach. That said, Project LMP's chassis has a very similar nose and side pod design although he doesn't tie the pods back into the scuttle or roll hoop, leaving a 'ledge' at the sides. I need to tie mine in at the back because the strut suspension puts loads into the chassis fairly high up. Please note that the partial chassis image above is an old one and everything aft of the seat back should be ignored.

So, not accusing, just (pleasantly) surprised by the similarities.

Dominic


sgraber - 18/2/04 at 04:26 PM

Dominic, I notice a fairly large difference. In yours your feet are in an area behind the wishbones, in the XTR the feet are all the way between the wishbones. I have read horror stories of wishbones dislodged in accidents and becoming spears that pierce legs. Also, there is very little crumple-zone with your legs so far forward. It is something that would definitely concern me.

So in that sense, I think your design is even better!

Graber


chrisg - 18/2/04 at 09:52 PM

I have to warn you that I shall be stealing, wholesale, bits from all your chassis designs, when I start my mid-engined project (it's up to third now)

So get ready to sue me, like that'll get you anywhere.

I have nothing, church mice bring me stuff.

cheers

Chris

Actually I shal fox you all by making it slightly different!


TheGecko - 19/2/04 at 12:08 AM

quote:
in the XTR the feet are all the way between the wishbones.

Steve,

There's no way in the world I'd put my feet forward of or amongst the wishbones The human ankle is NOT a crumple zone! On mine, the radiator will be mounted leaning forward in front and will be the first thing to go in a head on, followed by the suspension box area. If there's room I may still try to drop a spare wheel in the middle of that front box - probably only fit a space-saver in there though. The battery will definitely be on the floor in there in a futile attempt to shift the CG forward a little

Thanks for the comments,

Dominic