by strangebrew » Sat Dec 20, 2014 7:07 pm
I'm gonna' 'fess up here Austin........
The reason I make my chassis from styrene or small brass rod is because I have lots of trouble soldering heavier brass like your doing.
I still use an old Weller gun for my work. I had trouble getting both sides of the brass rods on the rear motor bracket because I tried to
use the small torch I have & one side fell off as I heated the other side. I gave up & used soldering flux & went back to the iron.
By using small rod you can tack the rods together, throw on the wheels & twist the heck out of it 'till it's square & level.
Then I sit back, get an adult beverage & visulize where the reinforcement needs to be. It's a piece of cake to add lightweight rods where you need them with no fear of others dropping off. Just like when we built the 1:1's.....THINK TRIANGLE. My chassis is very light, but I'll
wager it's just as stiff as the heavier brass stuff. Being light you can add ballast where it needs to be, again just like the 1:1's.
You've got lots of time to experiment. ONE THING........I think I'd take the motor out for the rest of the build to avoid the heat & polution.
Remember every piece of metal on your frame is a heat sink & sucks the heat from your work. Take out the axles also when heating the
tubing. Did I mention soldering paste (or flux)?? Use it liberally & make sure you're using acid core solder for the brass.
You'll get there: