After some more work on the Yok SD, I felt I had a better chance at 'nursing' it through the next round of the championship without reliability problems. First, the driveshafts were machined where the barrel goes through the bone of the CVD to give a clearance fit. For some reason, these were friction welding themselves together during racing conditions!
Next, the clearance holes were polished to give a super smooth action.
I decided I didn't like the CVD pins being held in by a grub screw only - the driveshafts spin at a hell of a rate and as there are no 'flats' machined onto the pins, they can slip out during use causing drive failure. AND severe hub carrier damage!! - one of mine was nearly cut in half by the pin, before it finally jammed
The solution is cheap and easy though - heat shrink tubing cut to 3mm slipped over the axle to hold the pin in place in addition to the grub screw. It works great!
The steering arms were replaced for alloy items. The plastic arms work, but they are too fragile. Fast Trax MR4 alloy items are a direct fit and are in plentiful supply.
The Ackerman with the new arms is slightly reduced, so I decided to chamfer the edges of the C Carrier, which allows a little more throw for the inside wheel effectively increasing the Akerman angle.
Now onto the 4th round of the championship - could I improve on my last week's qualifying shambles?!!
Well, the Peak Hellfire was skimmed and bolted straight back in. During the 3 rounds of qualifying I improved in each one driving consistently and obtaining a gap of just .5 of a second between my Average lap and my Fastest lap!! Fastest = 12.080 Average 12.545
The car felt great and didn't let me down this time.
I qualified 3rd for the A final!! The Peak Hellfire provided loads of punch and top speed and I was well on the pace during the A using Demon matched GP 3300's. However, I kept clear of the ensuing 1st lap pile up and pulled away by nearly a lap. I just switched on cruise control and watched as the chasing pack battled for 2nd place
I went on to take a comfortable win against numerous sponsored drivers
Next test will be a fairly large regional meeting. It bodes well that most of the A finalist 'candidates' were at the meeting just gone!!! Fingers crossed.