by chappy » Thu May 26, 2016 8:16 pm
Here it is Dave
Bob
Re: Flyslot Williams FW08C
by chappy » June 8th, 2014, 11:05 am
I received my new Senna car and as others have stated the aesthetic quality is definitely lacking.
The driver figure is as Harry pointed out sitting to high, and imho a bit on the chubby side.
For the rivet counters it definitely misses the mark.
When I put it on my wood track, it actually ran well, although not on the pace of the Lotus and March models.
As with my other Williams cars with the strange gearbox configuration, I felt this was the problem in speed and smooth quiet running. What to do?
A while back when trying to achieve parity between the 3 cars, I set to work on the Williamsgearbox.
One thing that is obvious is the friction created by the design. The gearbox alone has a large surface over the first driven gear, and the successive gears creat more friction. Then the axle and sleeve even more, and the axle into the bushing more again.
All of this seems to add up to excessive surfacefriction at a number of different spots.
How to reduce the friction?
I first took the gearbox out, a fairly easy operation with 2 screws holding it in place. The gear comes apart in 2 pieces. I then took my pin vise and started to drill holes through the empty gear box using a small bit, sorry I cant recall the size. I went from top to bottom and side to side in about 5 or 6 areas.
I then cleaned out the plastic burrs created within the gearbox by my drilling.
This did 2 things, reduced the surface area inside the gearbox creating less friction, and gave me some extra lube points.Â
Next was the two angle gears , but there was not a lot to do there except check for good lash and remove any flash from the molding process.
Now onto the axle with the sleeve. The main purpose of the sleeve is to act as a spacer from what I could see.
So it was a tight fit on the axle , and to loosen it up I used the same technique as I did on thegearbox.
it loosened the sleeve up a bit and gave some more spots for lube.
Next onto, the bushings, andnthe intakes .
Again I used the pin vise to creat less surface area therby reducing friction and allowing better lube access.
So after all this what did I find.
I now had a Williams which was faster, smoother and closer to parity with the Lotus and March.
I also still had pretty good braking as there is still more friction surface than on the other 2 cars.
It worked for me and only took about 10 minutes to accomplish.
It didnt effect the strenght of the gearbox or other parts.
So there you have it, my solution to improvement on the Williams and the strange gearbox set up.
Bob
The future is in our hands, choose wisely
chappyHRW SlotCar Veteran! 1906 September 28th, 2012, 7:22 pm Ontario Canada