1/4 Scale Sprint Car Build

ACE: American Custom Engineering designs and builds custom 1/4 scale cars
acechassisco
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Joined: July 22nd, 2010, 5:25 pm

1/4 Scale Sprint Car Build

Post by acechassisco »

I am building a sprint car (racing style) for a customer in Arkansas and i decided to do the build-up step by step on the forum. I have designed new welding and machining fixtures and will post the pictures of what they look like and how they are made at the shop. Enjoy the build and thanks shawn for letting me put your car on the forum..
acechassisco
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Posts: 54
Joined: July 22nd, 2010, 5:25 pm

Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Here is the CAD drawing of the side welding fixture. Looks busy but everything has a purpose and will make for a precision welding jig. I spend the time up front in making very nice jigs and fixtures so i can produce a chassis that is perfect one after another. This design has taken roughly 3 weeks to get it to a point that i can start producing parts on the machine. I just purchased a laser cutting machine around a month ago to cut all the flat parts for the chassis so decided to produce all my jigs and fixtures with it. The small pieces at the bottom of the print shows the locating slugs used to locate all the pieces of tubing in the chassis. The design will be up loaded into the machine and will nest the parts on a sheet of material and cut the design out.
Attachments
photo (4).JPG
photo (4).JPG (28.09 KiB) Viewed 9222 times
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Emilio
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Re: 1/4 Scale Sprint Car Build

Post by Emilio »

Sounds very promising, will all your sprint cars come with a quick change rear and will you offer QC rears separately? Also your join date is 2010, I've been here for some time but can't recall who you are?
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Mike Casey
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Re: 1/4 Scale Sprint Car Build

Post by Mike Casey »

Thanks for sharing the process. Great to see some new projects!
www.quarterscalelegends.com The Awesome history of 1/4 scale!!
mplumb
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Re: 1/4 Scale Sprint Car Build

Post by mplumb »

Cant wait to see more!!!
Its got to be these guys http://acechassisco.com/
Al Gibson (QSL)
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Re: 1/4 Scale Sprint Car Build

Post by Al Gibson (QSL) »

You are right!!
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Got the welding jigs cut out and assembled for the new sprint car design. This seemed to take forever to get completed but with precision jigs = consistant products. I needed new jigs for production so the new sprint car design was a perfect time to do so. Hope you enjoy...
acechassisco
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Joined: July 22nd, 2010, 5:25 pm

Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Having an issue getting pics up....
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Try the picture again...
Attachments
weldingjigs2.jpg
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Some more pictures of jigs
Attachments
sidejigs.jpg
bottomjig.jpg
jigprint01.jpg
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

Chassis is moving along.... This is the left side of the sprint car...
Attachments
Front shock mount located but not tacked in
Front shock mount located but not tacked in
Rear shock mount
Rear shock mount
rear shock and frame brace
rear shock and frame brace
Top loop fabricated and now installed the rear vertical support
Top loop fabricated and now installed the rear vertical support
Tie end gusset at front and rear. This little bracket is very important because it locates the cross braces at the front and rear of chassis.
Tie end gusset at front and rear. This little bracket is very important because it locates the cross braces at the front and rear of chassis.
Front bottom rail bent
Front bottom rail bent
Front of bottom rail being marked for bending
Front of bottom rail being marked for bending
Rear bottom rail kick up. First thing is to figure out the starting of the bend.
Rear bottom rail kick up. First thing is to figure out the starting of the bend.
End view of frame showing how straight it is..Good jigs = perfect parts!!
End view of frame showing how straight it is..Good jigs = perfect parts!!
Frame side after pulling it out of the jig
Frame side after pulling it out of the jig
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

It would have helped if i put them all in order!!!!!!Sorry about that guys....
acechassisco
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Re: 1/4 Scale Sprint Car Build

Post by acechassisco »

More detail pictures of left side of chassis
Attachments
Front radius rod mount L.S.
Front radius rod mount L.S.
Rear radius rod mount L.S.
Rear radius rod mount L.S.
Installed body tab
Installed body tab
Body tabs, we are the only chassis manufacturer that puts them on the frame.. I dislike zip ties!!!!!!!!!!
Body tabs, we are the only chassis manufacturer that puts them on the frame.. I dislike zip ties!!!!!!!!!!
Bobby Dodger
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Re: 1/4 Scale Sprint Car Build

Post by Bobby Dodger »

Thanks for taking and posting these pictures. I'm following this thread

Cheers
Rick F
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Emilio
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Re: 1/4 Scale Sprint Car Build

Post by Emilio »

Just beautiful.
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