Rick Thigpen was kind enough to give me a mystery chassis center section. Rick tried a bunch of motors and none really fit. The wheel base was a short 3 7/8" for the 1/8" axle era. The front axle tube was set also set very low. This flat wire chassis center section was nicely constructed with flat wire.
I found that a '68 Mabuchi motor fit. Rick suggested building a period race motor with Champion two-piece magnet shims and magnets, a Mura endbell, and a period Mura armature. As Rick suggested, the Mabuchi can ball bearing was replaced with an endbell bushing. This replacement is not an easy task. The ball bearing did not want to leave and had to be machined out. The can and endbell were drilled out for pin tabs. The first armature tried did not pass the motor break in test. The second one chosen works fine.
The front axle tube was set very low and needed to be raised, so I decided to move the axle uprights and stretch the wheelbase to close to 4". When I unsoldered the uprights, to my horror, the four main rails unspring themselves and pointed in four different directions. Well, all was repaired and realigned. Rick and I both agree, many times it take more time to restore a chassis than making a new one. I then added the body mounts, cross braces, and plumber stops.
Rick contemplated building the chassis center section into a sports car by adding pans. I wanted to build it into a Formula/Indy car. After going through all of the period low and wide open wheel bodies, I found that the Lola Indy fit perfectly. I mixed Blue Angel blue with black paint to make it darker. The decals are Dynamic.
Riggen wheels and tires were trued and installed along with what I think is a Versitec crown gear.
This was a fun build and it's time to try it out. Thanks again, Rick.
Rodney