200mph
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| posted on 21/3/03 at 12:06 PM |
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3/4 inch tube
I have a fair bit of 1inch tube left over,
and was wondering whether this could be
substituted for the 3/4 inch mentioned in
the book, for the transmission tunnel etc?
Don't really fancy buying more steel at
this time
Wouldnt have thought there would be a
problem, but don't really know!!
Thanks
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Simon
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| posted on 21/3/03 at 12:15 PM |
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My tunnel is made from 1" sq
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JohnFol
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| posted on 21/3/03 at 12:17 PM |
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Slightly thicker tube will reduce the clearance down the tunnel and add weight. Apart from that, there is no problem.
You could always make something else from the metal. Support to hold g'box up whilst fitting engine, adding jacking points, engine mount . .. .
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200mph
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| posted on 21/3/03 at 12:23 PM |
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I could do al of this, as I have a about 40 feet left.
Will make my tunnel from this and will see what else I can do with it.
Maybe a table ornament?
Thanks for the replys
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James
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| posted on 21/3/03 at 03:56 PM |
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quote:
Originally posted by 9904169
I could do al of this, as I have a about 40 feet left.
Will make my tunnel from this and will see what else I can do with it.
Maybe a table ornament?
Thanks for the replys
Maybe swap with someone who's about to buy their 1" steel? If they buy extra 19mm and give that to you in exchange?
Just an idea!
HTH,
James
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cymtriks
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| posted on 22/3/03 at 04:36 PM |
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If you box in the tunnel with 18 gauge welded in steel panels on all four sides (top, bottom, LHS & RHS) then you won't need a tunnel frame
except for a single arch to help support the handbrake and gearchange bits. Your chassis will be both stiffer and lighter overall. Check out the
Caterham cjhassis which has hardly any strength in the tunnel but is very good overall. The book chassis, like most spaceframes, is actually no better
than a simple ladder frame of the same weight. All that spaceframe blurb in the book which refers to aircraft and racecar structures it is only true
if the chassis is properly designed and most spaceframes are more hype than ability.
So save the tube for something else and weld up the tunnel.
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jcduroc
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| posted on 23/3/03 at 05:33 PM |
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quote:
Originally posted by cymtriks
If you box in the tunnel with 18 gauge welded in steel panels on all four sides (top, bottom, LHS & RHS) then you won't need a tunnel frame
except for a single arch to help support the handbrake and gearchange bits. Your chassis will be both stiffer and lighter overall. Check out the
Caterham cjhassis which has hardly any strength in the tunnel but is very good overall...
Hi Cymtrick
Judging from this photo of a Caterham chassis is appears the tunnel is panneled over a tube structure!...
Joćo
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jcduroc
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| posted on 23/3/03 at 05:37 PM |
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Tunnel prevously, now attachments
quote:
Originally posted by jcduroc
Judging from this photo of a Caterham chassis ...
Joćo
It appears my "attachment" problems remains.
See the picture in jcduroc's photo archive.
WEBMASTER.
Can you figure out my problem?
Joćo
[Edited on 23/3/03 by jcduroc]
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cymtriks
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| posted on 16/4/03 at 04:02 PM |
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That is not what the photo in my Caterham brochure shows! I paid a visit to the Caterham stand at a kit car show in 93 and the brochure and the
display chassis both showed a very light weight structure which seemed to support only the brake lines to the rear axle. From memory the tube size was
3/8 inch.
Your picture shows a tunnel that looks much more like a lowcost tunnel. Is it more recent than my old brochure?
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jcduroc
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| posted on 16/4/03 at 11:51 PM |
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C........m tunnel
quote:
Originally posted by cymtriks
Your picture shows a tunnel that looks much more like a lowcost tunnel. Is it more recent than my old brochure?
See http://www.apgreenaway.freeserve.co.uk/RearSuspension.html
Joćo
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