Rorty
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| posted on 21/10/05 at 09:02 AM |
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Rorty DeDion axle assembly drawings.
As requested, here's my take on the Locost De Dion axle (thanks go to flak monkey for hosting it).
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.
If you decide to have a go at constructing this interpretation and injure yourself or cause some damage, then you're an idiot and there's
nobody to blame but yourself.
ADDENDUM In drawing # 08 the material spec states 4140 or EN24T steel. It should read 4340 or EN24T steel.
RortyDeDionAxleAssembly
[Edited on 28/10/05 by Rorty]
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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zzrpowerd-locost
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| posted on 21/10/05 at 09:10 AM |
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does this fit straight into the book chassis? 
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CommanderAce
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| posted on 21/10/05 at 10:39 AM |
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Excellent! Cheers bud, just what I was after!
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ned
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| posted on 21/10/05 at 11:24 AM |
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a good looking set of drawings, but i do wonder why you bothered rorty? these plans (in essence) have been around yonks, are on the locost cd and the
locost7.info site iirc
Ned.
beware, I've got yellow skin
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David Jenkins
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| posted on 21/10/05 at 11:33 AM |
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Well Ned, I haven't seen either of those sources so I'm very grateful for Rorty's efforts!
Rorty - I have a question - on your drawing you call one part the 'Watts Linkage', but it looks like a panhard rod to me. Or is that my
ignorance showing?
David
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ned
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| posted on 21/10/05 at 11:41 AM |
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ok well i can't find the stuff on the locost7.info site, but i'm sure i've seen it online somewhere.
i have the locost cd so can post the pics if it'd help anyone.
Ned.
beware, I've got yellow skin
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MikeR
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| posted on 21/10/05 at 11:44 AM |
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Ned seeing as you have access to three sets of plans now, what are the differences between the plans? Are they all pretty much identical? do they all
use the same thickness steel?
Is there scope for a best of breed here?
(Rorty, i'd also like to add my thanks, this is the first time i've seen proper plans. I keep thinking about de-dion and you might have
pushed me over the edge!)
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ned
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| posted on 21/10/05 at 11:50 AM |
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happy to admit my mistakes.
rorty's is more similar to the gts dedion as its 2 straigh pieces joined in the middle, the locost cd version is a bent tube.
pics now uploaded to my photo archive from the locost cdrom :
http://www.locostbuilders.co.uk/photos.php?action=gal&user=ned&folder=dedion
but they have been posted before as they're in someone else's archive already as the system renamed some with a '2' at the
front to signify that name already exists in the uploads folder on the server.
I'm sure Rorty's input is and will be appreciated and is a better engineering drawing than the sketches with dimensions linked above.
Ned.
beware, I've got yellow skin
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Triton
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| posted on 21/10/05 at 11:51 AM |
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Certain parts look like the one i did for the GTS....but then nowt is really new on cars anyway just done differently
Good set of plans though Rorty, i like your English Wheel stuff on your webby too....pat on the back there
My Daughter has taken over production of the damn fine Triton race seats and her contact email is emmatrs@live.co.uk.
www.tritonraceseats.com
www.hairyhedgehog.com
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Surrey Dave
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| posted on 21/10/05 at 12:28 PM |
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My Acrobat wont open it , says it cannot decrypt, any ideas?
[Edited on 21/10/05 by Surrey Dave]
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David Jenkins
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| posted on 21/10/05 at 12:33 PM |
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It opens OK with Adobe Acrobat 7.0.5 for me.
Maybe you need an upgrade?
David
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BKLOCO
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| posted on 21/10/05 at 12:42 PM |
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Cheers Rorty.
I was going to make myself some caliper brackets.
Your drawing will save me a lot of measuring and designing.
Just as a point, there are a few dimensions missing off the drawings, although with a little common sense it's not difficult to work them out or
best guess them.
Experience is what you get when you don't get what you want!!! 
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Rorty
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| posted on 21/10/05 at 01:16 PM |
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quote:
Originally posted by zzrpowerd-locost
does this fit straight into the book chassis?
Yes, it's designed around The Book's chassis dimensions.
quote:
Originally posted by ned
a good looking set of drawings, but i do wonder why you bothered rorty? these plans (in essence) have been around yonks, are on the locost cd and the
locost7.info site iirc
Ned.
I drew up a complete De Dion Locost when I first joined this forum, thinking it might be fun to build one (but that's the only lot of drawings
at the moment with dimensions and notations).
I don't claim to break any new ground with any of it. It's all been around for decades, I just interpreted it my way and drew it all up.
Much of it is common to other projects I've been involved in and I just applied it to a Locost chassis.
I can say in all honesty I have not seen the Locost CD, nor knowingly copied anyone else' drawings with the exception of the basic dimensions of
the chassis. I think I may even have done my De Dion drawings before I was aware of the GTS example.
quote:
Originally posted by David Jenkins
Rorty - I have a question - on your drawing you call one part the 'Watts Linkage', but it looks like a panhard rod to me. Or is that my
ignorance showing?
David
You're quite right, I did call the Panhard rod (or bits of it) a Watts linkage or something. I was in hospital recuperating after major surgery
when I threw that lot together and I was seemingly still under sedation. I opened my laptop one day recently, not having used it since being in
hospital, and there were all the drawings. I have no recollection of finishing them!
I only looked at them briefly (and admittedly didn't pick up on the Watts bit of it), but someone asked for De Dion drawings the other day which
spurred me to stick the drawings in a PDF file, and there you have it.
quote:
Originally posted by BKLOCO
Just as a point, there are a few dimensions missing off the drawings, although with a little common sense it's not difficult to work them out or
best guess them.
I didn't think there would be this much interest in the drawings, but seeing there is, I may look at them again and touch them up. If you let me
know which dimensions you are after, I'll make a note and revisit it when I have some time.
Anyone can take it or leave it as they wish.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Alez
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| posted on 21/10/05 at 01:16 PM |
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"Due to their propensity to sue anything with a pulse, Americans are explicitly requested not to attempt to construct this assembly either in
part or in whole."
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MikeRJ
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| posted on 21/10/05 at 01:32 PM |
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Does the "hub bucket" not need cut outs for the bearing carrier bolts? It looks a bit tight in the drawing, and I think the GTS axle
required cut outs.
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Rorty
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| posted on 21/10/05 at 01:57 PM |
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quote:
Originally posted by MikeRJ
Does the "hub bucket" not need cut outs for the bearing carrier bolts? It looks a bit tight in the drawing, and I think the GTS axle
required cut outs.
Only if the screws are too long and poke right through.
IIRC, I drew it so that a 25mm (or was it 30mm?) screws would run to the end of the threaded hole only. Threads sticking out the back of the plate
don't add to the overall strength or retention.
Actually, I would insert some old dud screws into the holes before welding the plate to the bucket so you don't get any spatter buggering up the
threads.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Rorty
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| posted on 21/10/05 at 02:04 PM |
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quote:
Originally posted by ned
rorty's is more similar to the gts dedion as its 2 straigh pieces joined in the middle, the locost cd version is a bent tube.
Ned.
I meant to add earlier, the tube in my drawing is bent and not two pieces. A proper tube bender isn't even necessary; heat from a torch and some
grunt would bend the tube sufficiently. It's only a shallow angle.
Cutting and shutting the tube would be a waste of time IMHO.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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MikeR
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| posted on 21/10/05 at 04:00 PM |
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ok, i've no engineering background so please ignore the ignorance.........
what made you pick the steel thicknesses you've done? Just thinking that some of them seem majorly heavy duty compared to what we're using
on the locost chassis.
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zzrpowerd-locost
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| posted on 21/10/05 at 07:54 PM |
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quote:
--------------------------------------------------------------------------------
Originally posted by zzrpowerd-locost
does this fit straight into the book chassis?
--------------------------------------------------------------------------------
Yes, it's designed around The Book's chassis dimensions.
So if i built the book chassis this would fit straight in? The Gts de dion drawings show the bottom chassis rails flat instead of angled
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Mansfield
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| posted on 21/10/05 at 09:14 PM |
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Hats off to Rorty.
Seems to me that all these threads start with questions, and its damn nice to see someone start a thread with a solution.
David
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MikeR
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| posted on 21/10/05 at 11:00 PM |
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solution, solution ......... its just just made me question my whole axle decision 5 years into my build. I don't call that a solution, i call
it bloody annoying & another 2 year delay.
Whats that quote again, its not the destination, its how you get there!
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Rorty
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| posted on 21/10/05 at 11:24 PM |
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quote:
Originally posted by zzrpowerd-locost
quote:
--------------------------------------------------------------------------------
Originally posted by zzrpowerd-locost
does this fit straight into the book chassis?
--------------------------------------------------------------------------------
Yes, it's designed around The Book's chassis dimensions.
So if i built the book chassis this would fit straight in? The Gts de dion drawings show the bottom chassis rails flat instead of angled
AFAIK, this will fit straight into a Book chassis, but I can't put my hand on my heart and swear to it, because I've never built a
Locost.
According to the chassis dimensions I've gleaned, this will work. If the chassis dimensions everyone is using don't work, then this
won't either.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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Rorty
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| posted on 22/10/05 at 12:37 AM |
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quote:
Originally posted by MikeR
ok, i've no engineering background so please ignore the ignorance.........
what made you pick the steel thicknesses you've done? Just thinking that some of them seem majorly heavy duty compared to what we're using
on the locost chassis.
Admittedly, a lot of the stuff is on the "stout" side, but I specced it for a reason. I put this document together for the average
home-based builder taking into account all the levels of skill. It's much easier for the novice to weld thicker material because they can get
more heat into the material and accomplish better welds accordingly.
If I were to ever build one of these cars, it would be for the track only and I would use lesser thicknesses of steel (probably choose 4130 steel and
go really light weight).
Take the calliper bracket for example, personally, I would make it out of 3mm 4130 steel and TIG the appropriate length of bosses into the mounting
holes.
Likewise, I would make the axle brackets and Panhard brackets etc, out of 2.1mm 4130 and TIG bolster washers into the bolt holes.
If you're an accomplished fabricator then you could easily reduce the thickness of the brackets etc., but then if you were an accomplished
fabricator, you'd take one look at these drawings and conclude that for yourself!
If you follow the drawings to a T, you will have an easily constructed and strong set-up but if you are well versed in car constructing, then I would
only expect you to use the dimensions to build your own version.
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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sgraber
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| posted on 22/10/05 at 05:35 AM |
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Bob (Rorty), you're a good guy. Everybody is usually just sucking the information out of this place. You are one of few that is constantly
refreshing it with consistent quality info. Thanks.
At first when I read this part of your pdf I was a bit miffed...
quote:
"Due to their propensity to sue anything with a pulse, Americans are explicitly requested not to attempt to construct this assembly
either in part or in whole."
You mean in 'other' countries people take responsibility for their own actions?
Will you make an exception for me? I promise not to sue since I am apparently one of the few Americans that am willing to take responsibility for my
own actions...
Steve Graber
http://www.grabercars.com/
"Quickness through lightness"
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Rorty
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| posted on 22/10/05 at 12:32 PM |
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quote:
Originally posted by sgraber
Bob (Rorty), you're a good guy. Everybody is usually just sucking the information out of this place. You are one of few that is constantly
refreshing it with consistent quality info. Thanks.
At first when I read this part of your pdf I was a bit miffed...
quote:
"Due to their propensity to sue anything with a pulse, Americans are explicitly requested not to attempt to construct this assembly
either in part or in whole."
You mean in 'other' countries people take responsibility for their own actions?
Will you make an exception for me? I promise not to sue since I am apparently one of the few Americans that am willing to take responsibility for my
own actions...
Steve,
thanks for the kind words (check your PayPal account).
You're such a part of this comunity that I just think of you as a Brit anyway, so of course the rider doesn't apply to you.
 I'm sure you've come across the sort of people that rider's aimed at though.
I had a run-in with an over protective US parent over some of my buggy plans apparently being unsuitable for their 17 year old!
Cheers, Rorty.
"Faster than a speeding Pullet".
PLEASE DON'T U2U ME IF YOU WANT A QUICK RESPONSE. TRY EMAILING ME INSTEAD!
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