Purple 3906 Build almost complete
Well when I met my wife back back in 03'. I was a TC guy. She bought a 3906 E-maxx for a "bonding expirence." Unless you are doing the driving
TC racing is pretty boring. Well The truck was more or less sitting on a shelf since I got a T-Maxx. Lately I have been drawn back to electric and decided to resurrect the 3906 in purple and blue AL.
Upgrades from stock as follows:
Black hex screws
3905 diffs (current stock fluild but going to 120k)
Blue Al bulks F & R
Blue Al lower chassis braces
blue Al antenna nut
Blue Al wheel nuts
5605 knuckles (E-Revo; larger bearing and steel ringed arround pivot ball)
Ti hinge pins
Blue titanium beadlocks (yes real Ti and just as light as maximizer plastic ones)
RPM (all in purple)
T-maxx steering kit (3906 chassis mod needed)
Sport trac body (I painted this when we got the truck in 03 just ran this year and body cracked in 1st run, paint chipped in second)
factory team blue heatsinks for e-maxx
factory team blue shock for t-maxx with 4 stock 4 trinity springs
Shock socks off of ebay for $4
Motor and gearing:
I have a RRP slipper I need to put back on. Currently stock slipper with 12/72 gearing on a single Titan.
How the single titan come about.
Tonight I did a test run and in the process a I had a pinion grub screw come loose. With the low gearing it seems to run fine on a single titan so I am keeping it that way. Keeps cool with with a 90% of the time in first and the heatsinks. The single titan is a reverse rotation out of a e-revo. They are alot cheaper than the standard ones on eBay. The diffs have been flipped to correct revers direction. Single titan set on passenger side to compensate for reversed torque twist. This truck was built HD for the noobie in mind. The single motor will slow it down and improve confidence. May drop it down to 9T pinion as well. Great run time with this setup with some GP3300's from 2003.
A little dirty but here are a few quick shots I took for this thread:
From here I have a few things left to do.
Steel idlers to bulletproof the drivetrain
Put the RRP slipper back in
Get some cooler bumper and a new shell
Considering dropping in the traxxas blue waterproof electronics like in my 3905.
It may be spilled milk, but I wish I had won this HCR Purple chassis on eBay a while back. I didn't even bid on it and it went for $64.78. It would have added just the right touch.