Peugeot 205 Saloon Libre - RWD Space-Frame Silhouette Racer

Peugeot 205 Saloon Libre - RWD Space-Frame Silhouette Racer

Author
Discussion

PaulG40

2,381 posts

227 months

Thursday 13th February 2014
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Davie said:
I'll just sit back down at the back of the class... again.

Superb work.
haha, biggrin. Think I'll join you. The fabrication expertise on show in this thread is just outstanding!!!

CamMoreRon

Original Poster:

1,237 posts

127 months

Sunday 16th February 2014
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Oooo I did see those panels the other day! Shame they're so expensive!

More work this weekend on the engine & gearbox mounts.. yesterday I got the engine and gearbox back in and spent some time getting it all straight and level. I made up some little straps to hold a spirit level on the centreline, then hung plumb lines off either end to get it lined up.





I immediately spotted a problem.. the bolt holes for the starter motor line up really very nicely with this chassis member! There was space, but just not enough to get a bolt in and be able to do it up, so I had to abandon having the engine offset and put it in the centre. It was offset 30mm to the LHS to counter driver weight and make room for the exhaust.



There was space, but trying to get bolts in would be impossible!



Space was also really tight around the oil pump & engine mount location.



So I went and moved the engine as far back as I possibly could and put the crank line on the centreline of the vehicle, which got me enough room to be able to slip a bolt in and do it up. Thank feck for that, because an engine-out starter swap would have been absurd! laugh





Tight, but enough:



Crank line is now central:



So today (around setting myself on fire (yes I did get pics)) I used some Cardboard Aided Design to make the gearbox mounts.







Then I was going to start on the engine mounts, but found that the plates & spacers I'd had water cut weren't quite right.. by the time I had opened the holes up enough to fit I wasn't happy with the amount of material left, so will have to get some new ones made up with revised hole positions.



That's all for now.. I have a few pics of my wheels & brakes now that the centre bores have been machined out and everything fits, but will post tomorrow.

CamMoreRon

Original Poster:

1,237 posts

127 months

Monday 17th February 2014
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As promised..

My wheels came back from having the centre bores machined, so I stuck the front brakes in and took some pictures.





Nothing says motorsport like brakes that barely fit in the wheels. laugh



I also got my hub nuts (CNC & coated) back.. for such a seemingly insignificant part I think they look bloody awesome. biggrin


jones325i

755 posts

155 months

Monday 17th February 2014
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This thread is boner time, and brings back fond memories of the FS build I was involved in. I'm guessing you were in one of the teams too?

Pity you're so far away (Essex in your profile), as I may have been able to help you with a 3D laser scan if it would have been of any use.


CamMoreRon

Original Poster:

1,237 posts

127 months

Monday 17th February 2014
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Haha yeah I was on the FS team at Herts uni in.. err.. 2010? What about you?

I did have a mate do a laser scan for me of a 205 body, but it was on metallic paint so the surface was pretty soft and difficult to extract. In the end I just used it as a silhouette to adjust what I'd already done to the right sort of shape. I'd love to get hold of a FARO arm or similar so I could digitise a mesh on the body and use that to generate surfaces.. in my limited surfacing experience I'd find that much easier to use!

JonnyVTEC

3,012 posts

177 months

Monday 17th February 2014
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Now I feel old as a Uni of Herts FS team member in 2004!

ManOpener

12,467 posts

171 months

Monday 17th February 2014
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It looks fantastic, but I'm really eager to see the pictures of you on fire. Not in an unpleasant way, I'm just astonished that someone who was burning took time out to photograph it!

jones325i

755 posts

155 months

Monday 17th February 2014
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CamMoreRon said:
Haha yeah I was on the FS team at Herts uni in.. err.. 2010? What about you?

I did have a mate do a laser scan for me of a 205 body, but it was on metallic paint so the surface was pretty soft and difficult to extract. In the end I just used it as a silhouette to adjust what I'd already done to the right sort of shape. I'd love to get hold of a FARO arm or similar so I could digitise a mesh on the body and use that to generate surfaces.. in my limited surfacing experience I'd find that much easier to use!
I was at Bath, 2004.

Yes, scanning can be difficult on a shiny surface but we have ways around it - usually loads of talc or Flaw Detector Spray.

Sf_Manta

2,198 posts

193 months

Monday 17th February 2014
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Looking good as always Cam

Would have suggested maybe getting studs made up for the starter motor issue, but then there's the problem of getting the thing off once the nuts are loose, no winning with some issues.

If you're needing some fibreglass companies to knock up panels or supplies when the time comes, I've got a few contacts i can send over if you need them smile

OlberJ

14,101 posts

235 months

Tuesday 18th February 2014
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With regards the starter bolts, when the actual starter casing is fitted, will that give you even less room or have you tested it with the starter fitted too?

PhillipM

6,524 posts

191 months

Tuesday 18th February 2014
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Angle grinder to the gearbox casing and put the starter motor in from the other side man!

anonymous-user

56 months

Tuesday 18th February 2014
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Silly question? Have you gone for completely solid gearbox/engine mounts? If so, please slot them longitudinally to allow for powertrain bending and expansion! (otherwise you will be forever snapping lugs off your tranny.......(never a good thing ;-)

(or better, just use hard poly or similar bushes)

AWG

855 posts

158 months

Tuesday 18th February 2014
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So much maths going on here! Joy to read so far, wish you all the best for the project matey!

CamMoreRon

Original Poster:

1,237 posts

127 months

Wednesday 19th February 2014
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Ian - I think having studs would just make the problem worse! At least with bolts I only have to pull the starter away from the block 8mm to clear the dowels.

OlberJ - Yeah it'll be even tighter! I don't have a starter yet, but rest assured I will be getting one very soon to check. I know which one I will use and the part that bolts to the block is very slim, so I'm reasonably confident it'll be ok. Still.. I have to check!

Max Torque - It's solid mounted! The engine mounts will have nylon bushes but how much deflection that will allow I don't know. How much expansion are we talking here? I know exhausts have a habit of expanding some 20mm along the whole length, but that's a few metres of tube and several hundred degrees.. the block & box are quite a bit shorter and cooler so I can't see it being quite as extreme.

Appreciate the comments, guys. smile

JonnyVTEC

3,012 posts

177 months

Wednesday 19th February 2014
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How come the rear diff upper mount structure is compliantly mounted (sort of with nylon) but the bottom solidly fixed the space frame?

CamMoreRon

Original Poster:

1,237 posts

127 months

Wednesday 19th February 2014
quotequote all
Only because it would be impossible to get the diff out without that upper part being removeable! The nylon bushes are there as a cheap and light way of getting a good bolt-in connection.

CamMoreRon

Original Poster:

1,237 posts

127 months

Sunday 23rd February 2014
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Aero is coming along.. biggrin




CamMoreRon

Original Poster:

1,237 posts

127 months

Sunday 23rd February 2014
quotequote all
More work today.. sorting the steering rack mounts while I wait for the engine mount plates to be cut.







I love these clamps.. they came out so nicely! biggrin I borrowed some design ideas from a BMX stem I have - with the top bolt tight you can still twist the rack in the mounts, then the lower bolt has a small gap so that when you tighten that bolt down, everything is solid. smile


RallyChris

5 posts

124 months

Sunday 23rd February 2014
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The quality and craftsmanship going into this build is astounding! Looking forward to seeing more.


Chris

CamMoreRon

Original Poster:

1,237 posts

127 months

Sunday 9th March 2014
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Nothing motivates me more than good weather, and it was so nice this weekend! There's something I love about heading out early when it's cold but the sun is up. Anyway.. engine mounts! biggrin

I got my new plates & spacers back from the water jet profiler, and hurrah they now fit both my engine blocks! I turned some aluminium bushes up and pressed them in to some tube, then profiled and tacked everything together.







Clearance round the oil pump is very tight!





Slight problem there, being that I couldn't get to one of the screws once the front leg was on! So that had to come off for a re-think, and I fitted a piece of tube to allow me to get a tool in there to do it up.





So then it was a case of welding it all up and fitting some simple gussets.







Oil pump still fits, which is nice.







All done! I threw the head and cam cover on, then removed the front half of the jig table so I can do some welding during the week.



Edited by CamMoreRon on Sunday 9th March 18:43