Aces High Bulletin Board
General Forums => The O' Club => Topic started by: Skuzzy on July 31, 2016, 06:34:45 AM
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Building the IRS (independent rear suspension), for my Cobra, got one step closer to reality yesterday, with the completion of the two uprights/spindle assemblies. These are the major parts of the design which took a while to get done.
The pics were taken just after the test fitting, and before completing the welds, grinding, polishing and powder coating. The bearing was the test fit bearing because I knew I would destroy one in doing all the assembling and re-assembling.
Made from 16 pieces of steel, cut on the plasma table, hand formed, and MIG welded. It has been a challenge.
Next step is to get the axles cut down, and then final assembly of it all.
(http://bbs.hitechcreations.com/smf/index.php?action=dlattach;topic=380520.0;attach=24973)
(http://bbs.hitechcreations.com/smf/index.php?action=dlattach;topic=380520.0;attach=24975)
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You are just fabricating major car components from scratch? did you get designs or did you make this up?
Is this due to wheel hop? welds look good. (I'm a novice welder) :aok
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Looks great! Suspension critical specially on a Cobra. Well done!
Now comes the fun when finished. Will all be worth it when you are done Skuzzy.
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Ground up custom design. The upper and lower control arms are complete. Matter of fact the upper arms are already powder coated.
The original straight axle, while very strong, contributed to the cars tendency to kick its tail out due to binding of the rear suspension when in the turns or over uneven pavement. It also contributed to the unsprung weight which exacerbated the binding issues.
As I am intending to road race this car, I want the handling to be better and safer than the original.
I am using Autodesk Fusion 360 to do the finite element analysis, which has helped quite bit.
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You have had this car for some time rite? Did ya ever post a picture of it? Ive seen ya post about it for years but don't recall ever actually seeing it.
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You have had this car for some time rite? Did ya ever post a picture of it? Ive seen ya post about it for years but don't recall ever actually seeing it.
It is not a car yet, it is still in pieces. I figure it will be another year or two before it can be driven.
I posted this pic in another thread. It shows the rear frame, with the pumkpin for the IRS test mounted. You can see the front temp tires as well.
(http://bbs.hitechcreations.com/smf/index.php?action=dlattach;topic=380520.0;attach=24977)
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Here is a pic of the body.
(http://bbs.hitechcreations.com/smf/index.php?action=dlattach;topic=380520.0;attach=24979)
You can see the frame in the background. This was before starting work on the IRS. I had the frame together enough to make it a roller, on temporary tires. Made it easier to move around.
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One of my all time favorite cars. I helped a friend with his build (very little help). Is you body a one piece, have to cut the doors out yourself?
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The doors were separate. Came with the interior panel already glassed in as well. The hood also has a line glassed in. It is a pretty nice body. Pretty clean mold marks. I am pretty happy with it.
The mods I will make to it will be in the body pan and firewall area, as well as the trunk.
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what a great project! :cheers:
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It looks like it will be a great little car, Be safe safe safe. When doing projects like that safety, in construction could be life and death if some drunk runs your way.
Also as a pro, and well, you live in Texas, Black is a SOB m8 good luck with that. Sure it will look cool and done right its awesome, but one day down the line you will not want to take it out because you see the dirt too much. You can't go down the road without getting it dirty.
With that being said, stop with the fee time and make a new map :rofl :bolt:
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How many cubic inches of carbon footprint will this little jalopy have?
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In Germany, we do have 'car dealers'. You are able to buy a fully assembled car there. You can enter it and simply drive away! :old:
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That's neat stuff. When did you start the project? Is there a basic kit you start from and a kind of cottage industry of different customizable parts to select from?
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USCH, the black color of the body is just the gelcoat. My intended paint scheme will include white, blue, and silver.
caldera, the engine will be around 412 cubic inches. I am going for volumetric efficiency, rather that just brute force. Although, it should be brutal when it is done. :)
Lusche, I have heard of such things, but they do not let you play with the engine stuff much on those models, at least over here.
Pipz, I have been thinking about it for over 45 years. :D It was to start out as a kit, but then it went in a different direction. The body is cast from an original CSX car. The frame was from a kit, but then I got a new frame and got rid of the original frame. Then I decided there were things I did not like about that frame so I am doing a finite element analysis of it to see what I can do about its weaknesses.
Most everything I want to do is going to have to be fabricated by me, as it pertains to the body/frame. There are some aftermarket pieces I might use for the front suspension when I replace it.
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USCH, the black color of the body is just the gelcoat. My intended paint scheme will include white, blue, and silver.
caldera, the engine will be around 412 cubic inches. I am going for volumetric efficiency, rather that just brute force. Although, it should be brutal when it is done. :)
Lusche, I have heard of such things, but they do not let you play with the engine stuff much on those models, at least over here.
Pipz, I have been thinking about it for over 45 years. :D It was to start out as a kit, but then it went in a different direction. The body is cast from an original CSX car. The frame was from a kit, but then I got a new frame and got rid of the original frame. Then I decided there were things I did not like about that frame so I am doing a finite element analysis of it to see what I can do about its weaknesses.
Most everything I want to do is going to have to be fabricated by me, as it pertains to the body/frame. There are some aftermarket pieces I might use for the front suspension when I replace it.
What is the engine your 412 is based off of? Carb or FI? N/A or power adder?
Wish I had the $ for a project car and a garage to work on it, but still saving up for a second pair of pants. :(
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We use Inventor product Design Suite. It includes Autocad Mechanical, Fusion, and several other packages. While we can do our own finite testing, most of ours requires an engineering stamp so we have that done outside when required.
Parts are then pulled as dxf and ported to our Trumpf 5040 laser or our CNC machine.
For suspension components on a machine that will be carrying bodies, I would run 100% UT on the welds. Failure could cause loss of life and limb.
It is required of us when we make anything that may spin fast, fly, or any other high velocity craft/part.
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What is the engine your 412 is based off of? Carb or FI? N/A or power adder?
Wish I had the $ for a project car and a garage to work on it, but still saving up for a second pair of pants. :(
It is based on a Dart big bore Windsor block. EFI. No power adders.
We use Inventor product Design Suite. It includes Autocad Mechanical, Fusion, and several other packages. While we can do our own finite testing, most of ours requires an engineering stamp so we have that done outside when required.
Parts are then pulled as dxf and ported to our Trumpf 5040 laser or our CNC machine.
For suspension components on a machine that will be carrying bodies, I would run 100% UT on the welds. Failure could cause loss of life and limb.
It is required of us when we make anything that may spin fast, fly, or any other high velocity craft/part.
I left a lot of details out about everything that will be done, such as heat treating the parts, once they are ground. There is a lot of testing to be done after they come out of the heat treatment.
I am not going to sacrifice my, or my families, personal safety for anything.
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Are you building your own race car? :x are there specs for a roll cage in the class you want to run?
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Are you building your own race car? :x are there specs for a roll cage in the class you want to run?
It will be street legal. The only race I am running in will be the Big Bend race which is held annually.
Yes, it will have a functional roll bar, not a cage.
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It is based on a Dart big bore Windsor block. EFI. No power adders.
I left a lot of details out about everything that will be done, such as heat treating the parts, once they are ground. There is a lot of testing to be done after they come out of the heat treatment.
I am not going to sacrifice my, or my families, personal safety for anything.
Nice! I've been out of the hot rodding loop for a while. Didn't even know Dart made Windsor blocks. Dart heads too? Big cam and compression I hope.
Can I borrow 20 grand to build my V-8 Miata? We can do a loan like a reverse mortgage. You get the car when I die. :D
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Next time im thru dfw gotta give you a ride in my truck. 950hp to the ground and 2050 torque. Great work on the suspension.
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:aok
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Awesome Roy!
:rock
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The "original" cobra used a salisbury independent rear suspension.......surely not optimized for the car like your work of art.
I used to work on a generation 1 cobra owned by my neighbor across the street.........basically learned all the good stuff about race cars from him as a kid.
Nice choice on the diff. should be good to 1000hp.
I usually use R200 and R230 diffs. and corvette uprights front and rear but they have HP limitations below what you chose.
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In Germany, we do have 'car dealers'. You are able to buy a fully assembled car there. You can enter it and simply drive away! :old:
lmao....it's more of a hobby building your own car. Like having free time on your hands. And also it is educating to learn from your own mistakes by building anything. You gain knowledge and you feel proud when the project is finished.
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Skuzzy, are you leaving the body in Black?
If so, consider Dave MacDonald's colors, or the basic black used by the Shelby team cars in 1963... Less the numbers, of course. Nothing quite like a black Cobra.
(https://s-media-cache-ak0.pinimg.com/originals/06/fc/48/06fc48d2c61fe2a9304442f27ca4739d.jpg)
(https://s-media-cache-ak0.pinimg.com/originals/c9/91/80/c991806d48d82537c950183a9a8aa084.jpg)
(https://s-media-cache-ak0.pinimg.com/originals/1f/4a/e0/1f4ae02acc7821cff9d17221b9977e48.jpg)
The guy on the left with the hat is Rich MacDonald, son of Dave....
(https://scontent-lga3-1.xx.fbcdn.net/v/t1.0-9/13612116_1649816011944871_2991379866757828067_n.jpg?oh=0c29626685bcc50306b18341375fc44c&oe=58144C56)
At Willow Springs, Rich driving one of the cars his dad raced. The car is owned by Lynn Park (aka Mr. Cobra). This Cobra is SN CSX2259.
(https://scontent-lga3-1.xx.fbcdn.net/t31.0-8/13198421_1626880164238456_4457293407700920127_o.jpg)
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The "original" cobra used a salisbury independent rear suspension.......surely not optimized for the car like your work of art.
I used to work on a generation 1 cobra owned by my neighbor across the street.........basically learned all the good stuff about race cars from him as a kid.
Nice choice on the diff. should be good to 1000hp.
I usually use R200 and R230 diffs. and corvette uprights front and rear but they have HP limitations below what you chose.
The pumpkin was a no-brainer. Millions of them in wrecking yards make them cheap. They are strong enough to handle anything you can toss at them in a car weighing less than 2,000 pounds. Rebuilding it with 3:55 gears and an Eaton TruTrac.
I am exploring using the Corvette C6 front spindles/uprights with custom control arms.
Widewing, I am thinking of going perl white, with blue metallic stripes flanked with silver pin stripes. Or I may go red with silver stripes and white pins. Too many black Cobras around here. It is an awesome color for the Cobra, but I want mine to be easily recognizable. I am not concerned with making mine look like a vintage Cobra.
That said, I may add gumballs.
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That said, I may add gumballs.
What number would you be?
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45 or 60.
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The pumpkin was a no-brainer. Millions of them in wrecking yards make them cheap. They are strong enough to handle anything you can toss at them in a car weighing less than 2,000 pounds. Rebuilding it with 3:55 gears and an Eaton TruTrac.
I am exploring using the Corvette C6 front spindles/uprights with custom control arms.
Widewing, I am thinking of going perl white, with blue metallic stripes flanked with silver pin stripes. Or I may go red with silver stripes and white pins. Too many black Cobras around here. It is an awesome color for the Cobra, but I want mine to be easily recognizable. I am not concerned with making mine look like a vintage Cobra.
That said, I may add gumballs.
White or red would look good.... White was popular with racers in the mid 1960s. How about yellow? Not many yellow Cobras. Here's Allen Grant posing with the Cobra he raced in 1964. :O
(https://scontent-lga3-1.xx.fbcdn.net/t31.0-8/12957673_1611682842424855_8776444275245861019_o.jpg)
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I considered yellow, but you are pretty much stuck with a black interior. I am going with a gray interior. Might have some blue piping.
Just a small attempt to help keep it cooler. I think the gray would look good with either white or red.
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I considered yellow, but you are pretty much stuck with a black interior. I am going with a gray interior. Might have some blue piping.
Just a small attempt to help keep it cooler. I think the gray would look good with either white or red.
Gray and racing green would be something to think about.
Yes, the black interior would be noticeably hotter in the South as you know. When looking for a new car and opening them up to sit in them on a hot day, the light cooler interiors were significantly cooler.
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(http://www.hdwallpap.com/wp-content/uploads/2014/04/1966-shelby-cobra-427-red-wide.jpg)
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I am really torn between the white and red. I'll probably do a test panel for both and then decide.
If I was to do British racing green, I would have to go with the tan/beige interior. It just would not be right with any other color. Not a fan of the color for my car though.
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Most everything I want to do is going to have to be fabricated by me, as it pertains to the body/frame.
I think it's impressive to be able to do your own work like that. Very cool! :aok