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  #1  
Old 22nd September 2012, 07:15 PM
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Quote:
Originally Posted by robo View Post
Hey johnno did you clock the upper wishbones on the roll bar thread. Thats the sort of thing I had in mind.



Bob
Hi Bob,
Haven't seen that thread but will look.
Is this what you plan to do on your front wishbones as the American Locost boys use this type of setup as well and seem to have no problems.
I guess this gives you some adjustment on your caster to help with centering right?
I like the idea of that especially with the ability to alter camber without removing the ball joint.
I've came up with a neat (hopefully) solution similar to the photo regarding camber adjustment for IVA and was also thinking about using Heim joints for caster (after Algas thread) but is it ok to mix and match poly bushes with Heim joints as my front lowers are poly now as below.....



Cya all soon



Johno
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  #2  
Old 23rd September 2012, 11:00 AM
robo robo is offline
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Originally Posted by Johno View Post
Hi Bob,
Haven't seen that thread but will look.
Is this what you plan to do on your front wishbones as the American Locost boys use this type of setup as well and seem to have no problems.
I guess this gives you some adjustment on your caster to help with centering right?
I like the idea of that especially with the ability to alter camber without removing the ball joint.
I've came up with a neat (hopefully) solution similar to the photo regarding camber adjustment for IVA and was also thinking about using Heim joints for caster (after Algas thread) but is it ok to mix and match poly bushes with Heim joints as my front lowers are poly now as below.....



Cya all soon



Johno
On the cobra I built with xj12 suspension they press a needle roller bearing into the rear wishbones. They are as cheap as chips and if the right diameter could be found may be a cheap alternative. I will get the bearing book out and investigate.They might even do the bearings in yellow.




Bob
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  #3  
Old 26th September 2012, 08:41 PM
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Hi Robo,
I've been thinking about the design of my upper front wishbones and think I'm going down the "Rose Joint/Heim" route istead of polybushes.
I believe on Algas thread you said the MX5 caster is 5 degrees. I was thinking about moving the top ball joint adjuster rearward to achieve 6 degrees with the Rose Joints at 90 degrees to the pivot bolt.
I'm going to use misalignment washers and machine some spacers for the suspension brackets to take up any slack.
This will give me the option to dial in a caster angle to suit the geometry for the front of the car.
I plan to bend the top tubes and weld on threaded inserts onto the ends of the tube which will give a cleaner look......
The outer camber adjuster will be adjustable whilst on the car without removing the ball joint but it will not be a bought in item as I'm having some parts machined up.

Like I said not finalized yet so any input from anybody will be appreciated.
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  #4  
Old 26th September 2012, 09:39 PM
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i think ur going down a good route with rose-jointing the wishbones. it was something that i was looking at, and think will do for them all. will mean making more but hey ho. your builds coming on really well though johno, be a good step with the bodywork on.
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  #5  
Old 27th September 2012, 08:51 PM
robo robo is offline
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Originally Posted by Johno View Post
Hi Robo,
I've been thinking about the design of my upper front wishbones and think I'm going down the "Rose Joint/Heim" route istead of polybushes.
I believe on Algas thread you said the MX5 caster is 5 degrees. I was thinking about moving the top ball joint adjuster rearward to achieve 6 degrees with the Rose Joints at 90 degrees to the pivot bolt.
I'm going to use misalignment washers and machine some spacers for the suspension brackets to take up any slack.
This will give me the option to dial in a caster angle to suit the geometry for the front of the car.
I plan to bend the top tubes and weld on threaded inserts onto the ends of the tube which will give a cleaner look......
The outer camber adjuster will be adjustable whilst on the car without removing the ball joint but it will not be a bought in item as I'm having some parts machined up.

Like I said not finalized yet so any input from anybody will be appreciated.
This is the joint that westfield use http://www.mcgillmotorsports.co.uk/i...d&productId=57. I suppose going up one size would give it more of a fighting chance.

Bob
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  #6  
Old 6th October 2012, 04:46 PM
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Here's what I propose to fabricate as my front top wishbone.





I will be using 25mm x 2.5mm wall which will allow me to weld the threaded bushes into the tube as these are 20mm OD. The tubes are going to be bent at 45 degrees to give some extra weld/joint area to the main threaded adjuster.
I have moved the main threaded adjuster back 5mm to the book dimensions. With the Rose Joints I should be able to increase/decrease the caster as required for my car.
I believe DRCorsa has stated in Algas post on "self centering" that this will increase the caster by 1.4 degrees.
Camber will be adjustable in situ with a homemade camber adjuster.
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  #7  
Old 13th October 2012, 08:27 PM
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Well I started to fit my bodykit today.
Not worked with GRP before so not sure how to work with it..
I've made a start on the front nose cone cutting out the unwanted panel.
I used a Dremmel with a cutting wheel which seemed to work fine and then sanded some of it back with a drum sanding atatchment.
Also bolted my side panels and scuttle on with riv nuts.
It took some time linning up the ally panels with the GRP kit but it's taking shape slowly.









I plan on fitting my bonnet catches tomorrow which will be be fun I'm sure
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  #8  
Old 13th October 2012, 08:48 PM
Davidbolam Davidbolam is offline
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Looking really good there.

Where abouts did you get the silicone hoses for your engine? Is it designed to be flexible?

David
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  #9  
Old 21st October 2012, 11:12 AM
robo robo is offline
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Quote:
Originally Posted by Johno View Post
Here's what I propose to fabricate as my front top wishbone.





I will be using 25mm x 2.5mm wall which will allow me to weld the threaded bushes into the tube as these are 20mm OD. The tubes are going to be bent at 45 degrees to give some extra weld/joint area to the main threaded adjuster.
I have moved the main threaded adjuster back 5mm to the book dimensions. With the Rose Joints I should be able to increase/decrease the caster as required for my car.
I believe DRCorsa has stated in Algas post on "self centering" that this will increase the caster by 1.4 degrees.
Camber will be adjustable in situ with a homemade camber adjuster.
You could simplify it with adjusters on the inside and use the mx5 outer joint. The inners will do both caster and camber.

http://imagehosting.rodsnsods.co.uk/...b0f3674ceb.jpg

Bob
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The build http://www.haynes.co.uk/forums/showthread.php?t=12669
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  #10  
Old 22nd October 2012, 07:33 PM
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Hi all,
Managed to spend sometime on the car Sunday fitting my bonnet catches and steering column. Still waiting for two of the catches to turn up but all holes are in place ready.




Ther'e a bit fiddly getting the adjustment right and will need realigning on final assembly but I'm happy with how they fitted.

Also managed to get my steering column in place.






I started on my dash using ally so looking forward to working on that soon...
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