Shepparton

:: B74 Outdoors Setup ::

I've had the chance to run the B74 on a couple of outdoor tracks now. The setup is still a work in progress but this is what we used this weekend. Overall the car has more steering, lands better and is more efficient.

It's a much more responsive car than the B64 in terms of setup with even small changes making a big difference. We are learning every run but a few key changes that have worked on our tracks: its very sensitive to bumpsteer. I currently like 2 in / 1 out.

we've found a firmer rear swaybar (1.6mm, included in the kit) locks the back end in more especially on exit. A higher rear roll centre also helped.

the kit springs are working well for us, but we've added a bit more droop

i've only done a little work with chassis flex. Taking out the 2 screws at the rear 'T' of the rear carbon chassis brace gave the car a lot more rear grip especially in lower grip / bumpy tracks

we are running a narrower front track. The car seems to like the b pill low, and weve moved the a pill up to add a little extra caster which has smoothed out turn steering on bumpy tracks

diff height is a really sensitive tuning tool. Raising the diff height adds mid corner grip to that end of the car. So far ive liked the balance at front 0/ rear +1mm.

main option part is the centre diff which makes the car turn in better and accelerate smoother out of corners.

rear camber link length varies by track, longer link (1mm or 0mm spacer) is good on smooth tracks with long corners, shorter link (3mm spacer) is good on softer tracks / change of direction.

I do (corner weight) when i build the car to check for left / right and fore / aft balance. The B74 was super close with the Reedy electronics

R. Munday

Source: R. Munday