So, Back from my first big meeting with the 416.... Started off very ropey, but by the end of the day... awesome.
Had problems before the weekend even started, in that my spare C-hubs had arrived in time. Rigged up a fix with 415 C-hubs, and HPI steering knuckles, as mentioned above. Thankfully, this combo kept the axle at the same height, and the kingpin ball joint at the same height as the 416's parts. Only difference was with the steering ball joint position, with it being slightly further forward (effectively mid way between the tamiya holes), and slightly inward. There was also no need to run the 0.5mm shim under the ball joint, as the HPI hub is lower anyway. So with that sorted... onto the meeting.
Track for today at the wars was quite wide and open, so corner speed and a smooth car was really important...more so given that I was running stock...
Started out with the setup I posted above, except for kit setup on springs and roll bars. Quite simply, car was just, erm, awful.... Brought it off the track after practise, and a number of fellow racers noted how poor it looked, so not a good start. Snapping round, and had no confidence in it..
For the 1st qualifier, decided I needed to go drastic, so moved the setup towards what I had seen the TRF guys running at the DHI (wireless internet is so helpful
)... so D/D on the front (using the 416 D on the front rear block, so only 3mm of shims
), longer front link, A/E on the rear (running stock, so 2° toe in only), and 3mm under the inner and outer ball joints on the rear links.
Next run, sorted. Car much better, but felt a little sliddy, and not locked into the track. So for the 2nd round, moved to Tamiya White/blues, and with just a soft front roll bar. Felt better, but I hadn't predicted the track rubbering in so well, so now lacked a little mid-corner speed... balls.
3rd round, raised the roll centres all round, by placing some 0.5mm shims under all the suspension blocks, as well as going up 2teeth on the spur to lower the FDR a little (keep the revs of the motor up mid corner)... better, corner speed was up, and balance really good.
Final round, went "sod it, need the corner speed", so put the stock roll bars back on the car. Much improved, and put in a good improvement... unfortuantly the pack was really close... was 10sec off TQ, and ended up 15th! Crazy... if I hadn't made two undforced errors and lost ~3sec, would have been the in A. Track really punished mistakes... oh well.
For the final, thought I'd try moving the rear shocks back to their stock position on the tower, to aid a bit of mid corner steering. Worked really well, and couldn't believe how good the car felt to drive. Rear end was really stable, but still had loads of steering, and corner speed.... all it need was a driver who could hold a line more consistently
So overall, really impressed with the 416. Needs a little work on teh setup to get it carpet ready IMO, but it is awesome when hooked up. Never had my 415 as handle as well. I now need more track time with the car, so I can get used to how the car drives... otherwise, no complaints, despite the poor start this morning
Anyway, setup sheet from today