Learning how to build Lotus Seven replicas...together!
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PostPosted: April 26, 2018, 2:24 am 

Joined: December 6, 2017, 2:20 pm
Posts: 80
Location: San Jose, California
Hi Guys,

I am the point in my build where I am making my suspension brackets and control arms. But it seems I have a lot of choices.

The book and Vodou plans are all in metric. But I live in the USA. Because of this, I cannot get metric steel so easily. So this means I have to make a variation of the control arms and brackets? If this is the case, can I get peoples input on what they did for it?

Bushing/bushing tube/control arm tube(both rear and front) diameters and thickness?

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PostPosted: April 28, 2018, 8:25 am 
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Joined: October 6, 2009, 9:29 am
Posts: 7252
Location: Tallahassee, FL (The Center of the Known Universe)
I bought my front control arms from Speedway. The lower ones are made from 1-inch X .120 wall tubing. When I built the rear control arms, I used (wait for it...) 1-inch X .120 wall tubing. They make 0.75 inch threaded end plugs that weld up nicely to the tubing for the heims to screw into.

For chassis mounts, if you're using heim joints on the inner ends of the control arms, check these out: https://www.speedwaymotors.com/Speedway-Weld-On-Lower-Mount-for-Bearing-End-Shocks,3530.html
That's one style/size, they make several and I'm sure other vendors have similar products.

For the bushing mounts* on the rear uprights, I made my own pieces* out of 3-inch X 1/8 flat steel.

*And don't say brackets! OH NO! I SAID THAT WORD!!!
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Quinn the Slotus:Ford 302 Powered, Mallock-Inspired, Tube Frame, Hillclimb Special
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