IT'S ALIVE-ALIVE I TELL YOU!-A very good day on the Robot today, after realising
that the overall gearing to the drive from the motor was wrong at 4:1 we decided
to go for 8:1 and finished one of the reducer sprockets last week.
We usually have a four hour build session on a Sunday 12-4pm but to be sure of
getting any where near being able to test a new ratio set up I put some hours in
on Saturday and Sunday morning too.
On Saturday I turned down a length of bar using a old lawnmower cylinder
blade as the spindle to set the double sprockets on.
I then welded on the sprockets and added the end cap-I was very pleased with
the sprocket alignment, it was straight and true, two bushes were then set into
old sprockets as housings and they were welded to two brackets to support the
spindle / sprocket set up.
When Adam arrived with the half links he ordered on Sunday we were
able to fit the chains to both sets of reducer sprockets and it was time to test.

After a temporary wiring job we set the Robot on the patio and gave it a whirl-
needles to say we were more than pleased and I said to Adam "This is the champagne"
moment.
Attachment 7760DSCN2082.jpgDSCN2083.jpg
1 lawnmomer blade used for metal
2 the reducer sprockets
3 Adam adjusting the motor wires