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Author: Subject: cymtriks chassis mods
alistairolsen

posted on 18/8/09 at 08:08 AM Reply With Quote
cymtriks chassis mods

Been reading up on chassis modifications here...

http://locost7.info/files/chassis/kitcaranalysis_V2.doc


Which seems to cover a lot of the same ground as cymtriks posts which I have read before (may even be his work?)

I have gone for one inch tubes for the bottom bones, which is easy enough,
also take their point on pure triangles.

I will be redoing the engine mountings and side triangulation (TR1 and TR2)
as they suggest, and in one inch box, also makes for more area for bonding
on side panels.

I will be doing all of the proposed mods under section 3.0

under 4.0, I will be replacing R with 2 Y braces as R will foul the engine.

The bottom rails, C G1/2 and E will be larger, increasing the dimesnsions
of the box is better than increasing the wall thickness, but should I use
38 or 50mm tall box?

For the top rails in the engine bay and passenger compartment, the taller
box would be nice, but might add complication in the dimensions? Not sure
if Im better just using the 14swg (2mm) tube?

Overall I want a stiff, light chassis, my chosen engine is aroun 160kg and is expected to make 300ftlbs of torque!

Cheers

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alistairolsen

posted on 18/8/09 at 08:25 AM Reply With Quote
Also, I presume its been tested and concluded that the chassis sides N 1/2 an A1/2 Dont benefit from being larger?
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alistairolsen

posted on 19/8/09 at 07:41 AM Reply With Quote
waiting on a price for 40x25 box





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alistairolsen

posted on 19/8/09 at 07:43 AM Reply With Quote
sig working now....?





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cymtriks

posted on 22/8/09 at 09:23 PM Reply With Quote
quote:
Originally posted by alistairolsen
Also, I presume its been tested and concluded that the chassis sides N 1/2 an A1/2 Dont benefit from being larger?


I can't recall anyone finding problems in this area but it really does depend on your build. There are so many variations out there that I honestly cant say if it is or isn't necessary.

If it makes you feel safer/happier then do it. If you do you might want to go up a size for tubes J and D aswell as any load on A and N will go straight into these.

Be warned that I did not design for the Escort or Cortina donors as these were becoming very rare at the time. You will need to check that your chassis fits the suspension and drivetrain bits you intend to use!

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alistairolsen

posted on 22/8/09 at 09:57 PM Reply With Quote
Thank you for your reply mate.

Think im going to 38mm box and leaving the N and A members as they should be in tension.

Looking forward to seeing the chassis





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