How do you get your chassis straight ?

[fredo84]

Hello all !

I was wandering ,(I have to straight up my 1/16 Karmann ghia ....? ,How do you get you chassis straight on four wheels ?

Does you guys use Jigs on some sorte ?

Any tips to share ?

Thanks !

[youpey]

im interested to see this as well. typically i need to buy another kit and hope its straight. i have tried  taping it flat and even one time taped it flat and forgot about it for months, and found it popped right back after removing the tape.

 

i once tried on a hood to put it into hot water and twist opposite, but just ended with a shrunk hood

Edited March 9, 2021 by youpey

[Danno]

How do you get your chassis straight ?

 

Chiropractor.

 

(Sorry. Couldn't help myself.)

??

 

 

[Plowboy]

I just twist them until they lay flat. You have to twist them past square so when they spring back, they'll be flat. No heat of any kind. You'd be surprised at how much a frame can twist without breaking. 

[NOBLNG]

9 hours ago, Plowboy said:

I just twist them until they lay flat. You have to twist them past square so when they spring back, they'll be flat. No heat of any kind. You'd be surprised at how much a frame can twist without breaking. 

And.....then an even bigger surprise!? I’m not doubting that this works, but it’s too bad the plastic doesn’t give any warning when it is getting close to it’s limits.

Edited March 10, 2021 by NOBLNG

[Chariots of Fire]

I scratch build the chassis.  No problems!?

[slusher]

Warm warmer helps butt sometimes it’s just best to get another if it.has a bad warp..

[Old Nasty]

I cheat a little bit.  First I assemble the suspension & make everything as square as I can.   I make the mounting holes in the wheel backs slightly oversize with just a little bit of play.  When I glue the wheels on I place all the tires on a piece of glass (flat surface) & use machinist V blocks pressed up to the wheels & eyeball the alignment from the top.  Works every time & I always have all 4 on the ground.   

[youpey]

On 3/15/2021 at 6:45 PM, Old Nasty said:

I cheat a little bit.  First I assemble the suspension & make everything as square as I can.   I make the mounting holes in the wheel backs slightly oversize with just a little bit of play.  When I glue the wheels on I place all the tires on a piece of glass (flat surface) & use machinist V blocks pressed up to the wheels & eyeball the alignment from the top.  Works every time & I always have all 4 on the ground.   

so when you do this, the chassis will stay warped, but look like its flat? what happens with the body and interior. how do they lay flat on the warped chassis

[Old Nasty]

1 minute ago, youpey said:

so when you do this, the chassis will stay warped, but look like its flat? what happens with the body and interior. how do they lay flat on the warped chassis

Shim as needed.