Scout Racers! Part 3: Rear Frame
Last week Jim told us
all about the factory racing tanks, and
the week before that there was a general overview
of Jim's two Sport Scout racers. Today we'll see how a 741 rear frame is
stiffened up for racing.
What will it be next
week? Not sure yet, but I am sure it's going to be good!! If there are
any points in the process of building and preparing Sport Scout racers
you'd particularly like to see covered, let
me know, and I'm sure Jim will tell us about it. Moen
||The jig I use for
retubing main frames and checking rear sections.
||This photo shows
the big base frame back in the frame jig. The rear section will be stiffened
up a little. The front section had been retubed with .065 Chromemolly tubing
and needed a little tweeking anyhow, but that's another story......
||The 741 rear frame
section seems to move around quite a bit. Even when kicking the motor thru
you can almost see the rear frame section shaking. The answer, I am hoping,
is to strut the rear frame section as a normal Sport Scout was. I think
this must have been a west coast idea here in the States.
||This is the rear
brake cross shaft housing. Since no brakes are allowed for flat tracking
it needs a little clean up job.
||Notching the tubing
with a tool from Harbor Freight. It is an OK tool for the money, if Duff
was using it every day he would have to improve a couple things. Cheap
||The old brake cross
over housing cut off and the cleaner looking brace installed. If you need
a rear brake a cable set up for racing is the better set up anyhow.
There are some hot
741 racers here
on this nice NZ website, and Craig
(who runs it) tells me that there will soon be tuning artices by a couple
of New Zealand's top tuners/racers!