Again, thanks to flakmonkey I can post the IRS files as promised.
As with the De Dion design, no warranty is given or implied as to the design's suitability for any purpose. It is as yet unproven in a Locost,
but is freely offered for educational and comparative purposes.
My puter tells me the IRS set-up is 14.2kg [31.2 lbs] heavier than the De Dion.
That figure includes additional bracing in the rear of the chassis necessary to support the wishbones.
The De Dion would still be my first choice for this type of car, but each to his own.
Rorty Locost IRS Assembly PDF
Rorty,
That should keep people going on the home building front....Might upset a few people but hey!
I know someone who bought a car set of irs and dd 'bones from a certain kit firm then went home, jigged them up and made enough so his brothers
could have a car....
Cheers
Mark
quote:
Originally posted by Triton
....Might upset a few people but hey!
you deserve a knighthood. I don't know if i could be so generous with what must have taken a lot of time and effort
Well done
Totally agree with Liam...superb!
I, personally, cannot see why anyone should be upset.
I won't need it, but plenty of peeps and future builders, will find this invaluable.
If it is beyond peoples capabilities they have other options. If people are capable, but need damn good diagrams/measurements just to work from, then
Rorty has provided that in bucket loads!
Brilliant..
Fozzie
[Edited on 28/10/05 by Fozzie]
Cheers mate, greta contri. Think i might just have a go at this. Been umming and aghing for a while as what to do but this all looks fairly simple (as such). Just need some new short shocks...
I think Triton means that possibly the manufacturers of independent rear suspension kits will be upset.
Nice one Rorty! 
Very generous of you to spend your time on this!
Cheers,
James
[Edited on 28/10/05 by James]
I doubt anyone will be too upset - it looks to be quite plainly Rorty's own work, it certainly is very different from , say, an MK Indy back end.
It is a quality bit of work as well. Well done.
quote:
Originally posted by James
Nice one Rorty!
Not that we'll use it, but there is a lot of work gone on there! To which I remove my hat...
Things move on - as they say... if you don't develop to keep up, you effectively fall back.
Top bloke...
Exactly what I needed!
How does the track width compare to the book chassi? Same?
/Carl
quote:
Originally posted by rug
Exactly what I needed!
How does the track width compare to the book chassi? Same?
/Carl
quote:
Originally posted by James
It's designed for use with a Locost chassis.
But the Locost is Escort based.
The Sierra is 4" wider than escort apparently.
Cheers,
James
Front and rear track don't need to be equal, 4" on the rear will make very little difference to the driving characteristics of the car. Lots of cars with Cortina rear axles have ben built and not had the front widened to match.
Missed the point there a bit....there are firms that get miffed when info like that is made public especially given away.......I think it's cool
idea so keep up the cracking work....as i love winding people up anyway
dont see why manufacturers should be upset, most people who buy kits do so as they dont have time / space / ability / confidence ( delete as
appropriate ) to make their own cars / chassis
and after all this site was started as a help line to home builders and has evolved to encompass a manufacturer like ourselves
no problems here only applause for rortys generosity
best regards
marc
quote:
Originally posted by mnr laptop
dont see why manufacturers should be upset, most people who buy kits do so as they dont have time / space / ability / confidence ( delete as appropriate ) to make their own cars / chassis
and after all this site was started as a help line to home builders and has evolved to encompass a manufacturer like ourselves
no problems here only applause for rortys generosity
best regards
marc
my point exactly!
Top work Rorty, That looks superb M8
Hi Bob, just a thought I'd be interested to hear your take on: you've connected the bones to the upright using rod-ends. In each case
you've screwed the rodend into a bung in the end of the tube & connected to a U bracket on the upright. Is there a good reason why you
didn't put the U bracket on the bone & a plain hole in the upright?
From where I'm sitting the latter arrangement is (arguably) easier to make & a million times easier to adjust, and the adjustment is not
quantised in 1/2 turns of the thread. The downside is that a loose one could potentially drop right off but I'm sure it would be noticed long
before that happened!
I mention it because it's effectively how I did my back bones & I adjusted the alignment (camber, toe, crab) at the weekend.
IT WAS SO EASY!!!! and so accurate!
cheers
Bob
Hi Bob C. I hope you don't mind me chipping in with my twopenneth.
From the picture in your archive of the rear suspension I would be concerned about the strenght of the rod end attachment to the chassis. It looks
like 3mm material and in that orientation I feel it will deform fairly easily when hitting potholes or possibly under braking. I like the idea and
feel if you want to go down this route you should consider welding threaded tubes to the chassis to take the rod ends.
Mick
Yo Mick,
bear in mind they are 14mm rod ends!!!
supersize because the loading is not along the axis (& it's what they had in the shop....) It looks OK in the flesh but I take your point
& will keep an eye on that area!
cheers
Bob
PS threaded tubes on chassis means you're back with 1/2 turn adjustment quantisation...
[Edited on 6/12/05 by Bob C]
Sadly the construction of the lower wish bones and the hud carriers is beyond my fabrication abbilities (both in terms of tools and skill)
So I was wandering if anyone has (or would be interested in) producing them read to fit? (to an appropriate chassis obviously)
Greetings from the colonies. I am the gathering/planning stage of doing a LC7(8) using primaraly Mustang Fox chassis parts, very readily available here. I had planned to use an 8.8 solid axle but your plans have now muddied the waters a bit such that an IRS might be desireable/doable using bits from a number of other Ford cars here. Thanks Rorty.