Volvorsport
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| posted on 5/9/09 at 01:45 PM |
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youll much better off building the chassis out of prefab honeycomb sheet and bonding that into the mini shell .
even if your incompetent at GRP , it will still be easy to bond it in with a few pointers , with local strengthening of attatchment points .
youve not said if you can actually weld aluminium , so id have to advise no .
www.dbsmotorsport.co.uk
getting dirty under a bus
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philipcurtis100
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| posted on 5/9/09 at 05:06 PM |
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quote:
Originally posted by prawnabie
If you want to go ahead and use ally thats fine. I cannot see anyone chipping in on a project that might go horribly wrong and come back on them!
im not going to "come back on them" its only a bit of fun a learning thing about cars making one from scratch i want it out of ali dont
care if it breaks it will b my fault dont care if its an expensive way of learning
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philipcurtis100
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| posted on 5/9/09 at 05:07 PM |
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quote:
Originally posted by Volvorsport
youll much better off building the chassis out of prefab honeycomb sheet and bonding that into the mini shell .
even if your incompetent at GRP , it will still be easy to bond it in with a few pointers , with local strengthening of attatchment points .
youve not said if you can actually weld aluminium , so id have to advise no .
i can weld ali
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rusty nuts
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| posted on 5/9/09 at 05:12 PM |
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You can lead a horse to water springs to mind
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Mark Allanson
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| posted on 5/9/09 at 05:46 PM |
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quote:
Originally posted by philipcurtis100
quote:
Originally posted by Volvorsport
youll much better off building the chassis out of prefab honeycomb sheet and bonding that into the mini shell .
even if your incompetent at GRP , it will still be easy to bond it in with a few pointers , with local strengthening of attatchment points .
youve not said if you can actually weld aluminium , so id have to advise no .
i can weld ali
If you are really serious about making a spaceframe out of aluminium you will need to make cast knuckles for every joint and bond extrusions into the
joint in the knuckles. Try googling audi aluminium spacframes for a clearer explanation.
Personally I think this is Steve Gusterson doing a windup!
If you can keep you head, whilst all others around you are losing theirs, you are not fully aware of the situation
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Liam
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| posted on 7/9/09 at 01:07 PM |
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quote:
Originally posted by philipcurtis100it would be tuff they shouldnt get in the way
it prob wont be finnished i get bored easily
i have been told by collegues that ali is what i should make it out of
we make ali castings for automotive firms (aston martins, jags, metc, bmw, ford,etc)
so i think ali is perfect
quote:
Originally posted by philipcurtis100its only a bit of fun a learning thing about cars making one from scratch i want it out of ali dont
care if it breaks it will b my fault dont care if its an expensive way of learning
With respect, if that's your attitude and committment towards taking on a project like this, your standard of knowledge gathering prior to
making important decisions like material choice, and your response to advice from some very experienced and knowledgable people, I'd suggest you
dont even start the build in the first place.
If the only 'advice' you want to hear is enthusiastic agreement with whatever you've already decided to do anyway, perhaps try out
your proposal on a forum for, say, baking, or photography, or generally something completely unrelated to what you're doing. That will minimise
the risk of encountering people with relevant knowledge who might feel compelled to give you proper advice.
Liam
[Edited on 7/9/09 by Liam]
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philipcurtis100
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| posted on 7/9/09 at 04:28 PM |
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ok lets say i was to make it out of steel what steel would i use
what size of tube
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Staple balls
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| posted on 7/9/09 at 06:57 PM |
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How long is a piece of string?
All depends what you're making, for a sevenesque car, mostly 1" box section works pretty well (read the books, websites and look at
cymtriks' work)
Course, if you're not building something sevenesque, 1" box might not be suitable, and you could be better off with different tubing.
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hughpinder
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| posted on 8/9/09 at 11:39 AM |
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I have made horse boxes etc from both steel and aluminium section. I found many more failures in the aluminum, with cracking occuring in the material
next to the welds, so I stopped using it, even though it saved time in painting and some weight, and generally looked better(it was a good selling
point). I think that is the main reason here about not using aluminium for a chassis is to do with the dangers of material fatigue failure. Its also
much easier to get a 'good enough' weld in steel.
If you want to do a space frame for a CF/fibregalss mini, have a look at www.kimini.com- (by kb58 one of the contributors on this thread) which will
give you loads of information precisely that design.
Hope that helps
Hugh
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philipcurtis100
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| posted on 8/9/09 at 04:33 PM |
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quote:
Originally posted by hughpinder
I have made horse boxes etc from both steel and aluminium section. I found many more failures in the aluminum, with cracking occuring in the material
next to the welds, so I stopped using it, even though it saved time in painting and some weight, and generally looked better(it was a good selling
point). I think that is the main reason here about not using aluminium for a chassis is to do with the dangers of material fatigue failure. Its also
much easier to get a 'good enough' weld in steel.
If you want to do a space frame for a CF/fibregalss mini, have a look at www.kimini.com- (by kb58 one of the contributors on this thread) which will
give you loads of information precisely that design.
Hope that helps
Hugh
thanks
i have looked on that website it looks ace
looks like he did an exelent job shame iv prob annoyed him lol
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kb58
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| posted on 9/9/09 at 02:33 AM |
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No, I've gone through this with other builders who know better with their "outside the box" engineering. I guess I'm getting
better at handling this sort of thing... pulling the plug before getting irritated.
[Edited on 9/9/09 by kb58]
Mid-engine Locost - http://www.midlana.com
And the book - http://www.lulu.com/shop/kurt-bilinski/midlana/paperback/product-21330662.html
Kimini - a tube-frame, carbon shell, Honda Prelude VTEC mid-engine Mini: http://www.kimini.com
And its book -
http://www.lulu.com/shop/kurt-bilinski/kimini-how-to-design-and-build-a-mid-engine-sports-car-from-scratch/paperback/product-4858803.html
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