Alan B
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| posted on 14/11/03 at 01:23 PM |
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Bob, good points, which I'll try to address.
Top wishbones........ have Oilite (bronze) bushings in and pivot on a common hardened steel shaft (3/4"dia). There are shims each end to set
castor, about plus/minus 10mm is available. Some of the bracket gusseting has still to be done.
Lower shock mounts....are actually on 1.25"x 14g square...however, your point is valid and observation is correct...I have yet to triangulate
that area (and others)..need to check on a few other things before commiting to how I'll do it...
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Metal Hippy
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| posted on 14/11/03 at 01:36 PM |
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Making it up as you go along....
I like your style. 
Cock off or cock on. You choose.
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Bob C
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| posted on 14/11/03 at 01:39 PM |
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Thanks Al - hah - you answer one question & it leads to 6 more....
Oilite bushes - are they sintered bronze? Will this be a "grease point" on the final product?
I reckoned the constant heavy load on the hinge would put rubber out of the frame, though I believe the Stryker uses nylon bushes??? I suppose this is
why these suspension systems are only seen on "race" type cars with metal to metal joints everywhere (push/pull rod systems are also
loading up the wishbone hinges).
I believe the major plus with the inboard systems is the rising rate, which you can also achieve with non-linear spring winding pitch. Does anyone
flog rising rate springs that we can use?
cheers
Bob
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Alan B
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| posted on 14/11/03 at 01:42 PM |
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quote:
Originally posted by Metal Hippy
Making it up as you go along....
I like your style.
F**K OFF........
Although not far off the mark....LOL
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Alan B
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| posted on 14/11/03 at 01:47 PM |
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quote:
Originally posted by Bob C
Thanks Al - hah - you answer one question & it leads to 6 more....
Oilite bushes - are they sintered bronze? Will this be a "grease point" on the final product?
I reckoned the constant heavy load on the hinge would put rubber out of the frame, though I believe the Stryker uses nylon bushes??? I suppose this is
why these suspension systems are only seen on "race" type cars with metal to metal joints everywhere (push/pull rod systems are also
loading up the wishbone hinges).
I believe the major plus with the inboard systems is the rising rate, which you can also achieve with non-linear spring winding pitch. Does anyone
flog rising rate springs that we can use?
cheers
Bob
Yes, they are oil impregnated sintered bronze....there are some composite bushings that are lighter and have a higher PV rating..but expensive of
course...yes I will be looking at lubrication...possibly grease nipples, but need to consider the best locations...stress raisers etc.
Not sure about the springs....I guess the answer must be yes.....but I have no info.
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jcduroc
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| posted on 14/11/03 at 03:20 PM |
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quote:
Originally posted by ned
nope, its a 'Nemesis' built by gpcmotorsport ( http://www.gpcmotorsport.com ) ...
Ned.
Nice car and building too.
Pity the web has a button saying "Calender"!... Paul Anka wouldn't like that...
Joćo
[Edited on 14/11/03 by jcduroc]
JCM
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Hugh Paterson
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| posted on 14/11/03 at 04:36 PM |
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Droolability
Evening all, best thread for ages lots to think about, but having had a look at the prosport that Ned plays with at weekends who needs a lotus 7
lookalike
Setup at the back not unlike the formula lotus we used to play with a few years ago If you see a spare gearbox from one of those lying around
Ned let me know and I will forward u my address, Thats the expensive bit Any chance of a front and side shot of the whole car with the bodywork on
?
Regards all
Shug.
[Edited on 14/11/03 by Hugh Paterson]
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ned
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| posted on 14/11/03 at 04:39 PM |
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Shug,
Pics shortly, though we don't like being referred to as Prosports, they're radicals and we beat them easily (even with a tuned 1500 busa
lump.)
Ned.
these are from thruxton (156mph gearing IIRC) performance is quicker than British GT's, about same as ARP F3.
NO COMMENT:
[Edited on 14/11/03 by ned]
beware, I've got yellow skin
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Hugh Paterson
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| posted on 14/11/03 at 05:11 PM |
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Interesting cars, not seen them before Ned, but thats what happens when you live North of Hadrians wall and dont fenture South much now
Shug.
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ned
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| posted on 14/11/03 at 05:20 PM |
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erm, is croft too far? we've been there the last 2 years!!
Ned.
beware, I've got yellow skin
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Hugh Paterson
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| posted on 14/11/03 at 05:47 PM |
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Travel distance
Ned, It Is when you have spent 10-16 hours a day building a car from the ground up without trying to upset SWMBO for nine months, on a 6-7 day week.
Christ you dont want her to think we enjoy this By taking a weekend off to look at SOMEONE ELSES Cars
Shug.
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johnston
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| posted on 14/11/03 at 05:48 PM |
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is that the series ccc done a feature on a few months back ned ????
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ned
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| posted on 14/11/03 at 05:50 PM |
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dunno i'm afraid!
basically its for fully enveloping bodywork rear/mid engined prototype cars. SP1=230bhp spec vauxhall xe engine, sp2=power to weight ratio based
sp3=radical prosports.
7 double header meetings last year (14 races)
all info on regs and formula is on the site http://www.nationalsupersports.com and yes i am the webmaster though i don't get the emails....
Ned.
[Edited on 14/11/03 by ned]
beware, I've got yellow skin
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malcolmstoddart
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| posted on 14/11/03 at 06:51 PM |
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err sorry to post this way down here but, the subject of inboard suspension....If I remember about unsprung weight from motorbikes the unsprung weight
is the tyre,wheel and internals(inc brakes) and the swing arm or forks up to and including half of the compression unit (spring) this can be applied
to the above.
the pictures of inboard supsension look the absolute dogs dangling bits..and could provide a method of front suspension and drive for a 4wd cosworth
install...(pulling the front diff forward onto a plate in the front area behind the coil overs..in pic......)mmmm cos I have always wondered how to
get the drive shafts past the coil-overs..how do subaru's diffs bolt on to chassis or engine..
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Hugh Paterson
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| posted on 14/11/03 at 08:39 PM |
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4 X 4
A four wheel drive locost now I know theres another nutter in here other than me, maybe its the Scottish air
Shug.
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JoelP
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| posted on 14/11/03 at 11:29 PM |
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quote:
Originally posted by malcolmstoddart
how do subaru's diffs bolt on to chassis or engine..
subarus mostly have the front diff integral in the gearbox. Cos the engine is well short, only 2 cylinders deep.
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mackie
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| posted on 15/11/03 at 12:43 AM |
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Audis quattros too. It's like a transaxle but with an output for the rear too and the engine is mounted ahead of the front axle.
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malcolmstoddart
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| posted on 15/11/03 at 02:53 PM |
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inboard suspension
Now Shug, you know it isn't the Scottish air we breathe, its the heather we chew...!!!
Anyway I was just thinking, a while ago I had a 4 x 4 granada (ex police) and its front dif was bolted onto the side of the alloy sump...and this is
where I was leading, using the v6 box and driveshafts etc and shift the diff forward to behind the inboard - upright coilovers and away you go...yee
haa...!!!! bet someone has done it before...
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Hugh Paterson
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| posted on 15/11/03 at 03:12 PM |
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Malcolm, If u want to go down that road fill yer boots mate I have enough problems on my plate without THAT project, I already have a 4x4 dont want
another one, cant see me towing my boat with a seven anyway, as if I didnt get enough attention from traffic polis No doubt someone will build it
though
Shug.
[Edited on 15/11/03 by Hugh Paterson]
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MikeP
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| posted on 30/11/03 at 04:20 PM |
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LOL, I've discovered why I'd been getting bandwith warning notices from my ISP - usually my site doesn't get this many visitors
 .
The link: http://members.rogers.com/7builder/Downloads/BobsShocks.html
should be back up in December, Roger's has taken it off line as I've exceeded my bandwidth capacity this month.
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pbura
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| posted on 2/12/03 at 04:50 AM |
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Mike, I was in a panic once when your service was down. As soon as it was back, I put Bob's stuff on my hard drive. Absolutely brilliant
work.
Wish I'd done the same with full dimensioned S2 drawings that were once in the Yahoo SCCA D Mod/E Mod files area
Pete
Pete
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MikeP
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| posted on 6/12/03 at 05:46 PM |
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No worries Pete - free hosting means the site'l be up for a long time, just not very reliable . I know what you mean - it's even more
amazing that Bob did it with sketches and cut to fit, and that it works so nice - it wasn't till after it was working in his car (and generating
interest) that we got together to draw it up on the CAD.
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David_S
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| posted on 6/12/03 at 11:04 PM |
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Has anybody done an analysis of the chassis deflection under load for inboard vs outboard shocks? The load paths are radically different so I would
expect chassis designed for stiffness in the usual planes with outboard shocks to perform strangely with inboard shocks. Any ideas?
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dozracing
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| posted on 10/12/03 at 01:03 PM |
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Just to join in.
There is a retro fit inboard suspension design on my website www.gtstuning.co.uk thats very similar to how Caterham have done it on thier new car they
tested at Brands last week. Its not as elegant as i would like because i decided to make it retro fittable for a std. built car.
I quite like the pictured setup, but, my comments would be that its way way over designed, and as such not particularly aerodynamic and looks
incredibly heavy, although probably better than having the shocks all out in the breeze. Not sure the rod ended link is neccessary, i think it works
with just a plain welded in tube, which would make it lighter. With this design you could afford to use smaller tubes, or better still use aero or
flat oval tubing. Another way to concider doing it would be to make a sheeted in old race car style rocker out of it which would reduce the frontal
area of it.
Nice work, keep it up.
Darren
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ned
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| posted on 10/12/03 at 01:26 PM |
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Darren
I can't see your inboard suspension on your website, can you post a link? thanks. ps any news on your irs wishbones/kit yet?
thanks,
Ned.
beware, I've got yellow skin
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