zilspeed
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| posted on 23/2/09 at 11:27 PM |
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An idea not to copy.
My first ever lecture at university was in Structural Mechanics.
September 1990 it was.
I'll always remember the lecturer's words.
"Stresses travel in straight lines".
Clearly,
this bloke doesn't like that whole
principle.
Form follows function?
Nahhh.
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designer
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| posted on 24/2/09 at 12:14 AM |
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It looks professionaly made with the quality so they could be well designed!
Too gothic for my taste.
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Hellfire
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| posted on 24/2/09 at 12:22 AM |
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Professionally made and designed doesn't mean it will work though unfortunately.
Hit a decent UK pothole with that and he'll get more toe-out than he bargained for... 
Steve
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Volvorsport
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| posted on 24/2/09 at 12:35 AM |
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im more interested in why hes still using an old AFM?
but you have to ask why make it so difficult on yourself ?
www.dbsmotorsport.co.uk
getting dirty under a bus
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Canada EH!
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| posted on 24/2/09 at 01:41 AM |
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New approach to self-centering.
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designer
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| posted on 24/2/09 at 07:24 AM |
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One of the UK manufacturers uses a curved wishbone too.
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MakeEverything
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| posted on 24/2/09 at 08:38 AM |
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I dont see a major issue here. Its braces well enough and the material is substantial enough to compensate for the lateral stresses. Probably not
how i would make it, but notice the side rails are bent rather than welded. This in iteself is an admision of "yes i know theres stress on that
bend, which is why its bent and not welded".
Its easy to criticise but until we know the full design specification and the motives behind it, anything goes.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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MakeEverything
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| posted on 24/2/09 at 08:41 AM |
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Also, look at the centreline of the front triangulation. It turns that bend into the bottom corner of a triangle.
If it were cut mitred and welded id definately be concerned.
Kindest Regards,
Richard.
...You can make it foolProof, but youll never make it Idiot Proof!...
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Mr Whippy
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| posted on 24/2/09 at 08:45 AM |
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he's put grease nipples on the bush tubes, good idea
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MikeRJ
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| posted on 24/2/09 at 08:49 AM |
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Top wishbones aren't particularly stressed though, it'll probably be fine. Not sure I could be bothered with it however, it's
probably heavier than standard and doesn't actually do anything better.
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britishtrident
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| posted on 24/2/09 at 09:01 AM |
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It must be at close to 3 times the weight of the book standard bone.for less than half the stiffness.
Good workman ship though
Shame because the bottom bones are pretty cool.
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hellbent345
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| posted on 24/2/09 at 12:05 PM |
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also have you seen the roll bar at the back, supported by what looks like 3mm plate all the way along? thats gonna bend....
al
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dinosaurjuice
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| posted on 24/2/09 at 01:03 PM |
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anyone know why the front shocks go through the lower wishbone? never seen that before.
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britishtrident
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| posted on 24/2/09 at 03:11 PM |
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quote:
Originally posted by dinosaurjuice
anyone know why the front shocks go through the lower wishbone? never seen that before.
To get the line of action of the coil spring damper unit as close the ball joint centre as possible and so reduce the bending loads on the
wishbone. It also allows a longer damper stroke hence a decent ammount of suspension movement. It was fairly normal practice back in the days before
single seater went over to inboard suspension -- look at real Lotus Sevens, Lotus 18, 1960s Brabhams and the like.
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zilspeed
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| posted on 24/2/09 at 04:34 PM |
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The workmanship is excellent and I could never hope to emulate it.
However.
I still don't like the design of the top wishbones.
Before we go any further - remember, my car is an overweight and old fashioned thing with unmodified 1960s saloon car suspension, so I'm not
being all high and mighty about this.
Any new Locost / MK / MNR / Sylva / whatever being built these days has the chance of a clean sheet of paper as regards stuff like suspension.
It may be an overused cliche, but these are racing cars for the road, so important stuff like suspension should be built to racing car principals.
I've yet to see a racing car built with swoopy wishbones that were built that way because they looked cooler. They're built straight
because straight works best.
I think the guy has excellent fabrication skills, but don't agree with the Orange County Choppers style wishbones.
Here's some proper bones.
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