After narrowly escaping defeat at the hands of Johniwanna during yesterday’s Twitch broadcast I decided I better step my game up a bit. BTW, if you haven’t watched one of Johniwanna’s broadcasts, you should. Tuesday’s at 1pm Pacific.
Last night I got myself a Shebly Raptor and upgraded it to S1 for Storm Island. I was able to set some pretty good times with it but I’m wondering if I’m leaving anything “on the table” with the build/tune. I spent most of my time last night playing around with the Rebound and Bump settings trying to dial in the suspension. Learned a few things but what else can or should I do?
I’ve shared the tune if anyone wants to take it out for a spin. I’ve named it Storm Island.
Driving impressions and feedback are welcome and encouraged.
I can post the full build later on tonight for anyone that’s interested.
Thank You
Here are the specs settings I’ve got on the Raptor at the moment. I’ve been able to set Top 15 times on all four Storm Island Extreme Cross Country rivals events. It’s quick, but can it be quicker?
S1 900 AWD
928 HP
793 LB-FT
4826 lbs.
Weight dist. 53%
Displ. 6200
Tire Press. F/R - 23/21
Camber F/R - -1.5/-1.0
Toe F/R - 1.0/0.2
Caster - 6.2
AR Bars F/R - 22.14/25.06
Springs F/R - Min./Min.
Ride Height F/R - Max./Max.
Rebound F/R - 4.4/3.9
Bump F/R - 3.2/2.8
*Tried setting these all to 1.0. It felt too springy.
Aero - None
Brakes - Not Adjustable
Diff
Front A/D - 30%/0%
Rear A/D - 60%/0%
Torque Split - 75% Rear
When I get on, I would love to give your tune a try. I haven’t used any of the DLC cars yet but this one looks to be fun.
Just at a quick glance, I’m curious about your tire pressure settings and the feel and grip that they provide. Is the car built more for the point to point, short, one-time run races or for lapping events?
This tune is an amalgamation of tips and settings from a tuning calc, a youtube video and Foot’s open source thread. The diff was the only setting where I had some idea of what I wanted and I didn’t touch the gearing. Normally when I slap a tune together I don’t spend a lot of time refining it. I’ll usually take what the car gives me and make the most of it.
I wasn’t thinking about building for a particular event type but my guess it probably work best on the Cross Country P2P and circuit events. Not sure how competitive it’ll be on the short circuit events.
Grip wise I’ve found if you’re off throttle and turning the rear will get a little loose but it’s predictable and easily corrected with the throttle. I haven’t played around with different pressures yet to see what the differences are. The main thing I’m trying to sort out is figuring out is getting the suspension soft enough to soak up the bumps so I can keep the power down but not be so soft that it’s too wallowy.
Shaggy when I can get in front of the tv I will take it for a spin. But in the meantime if you want to try my A class tune. If you like it we can exchange notes.
It is hard to set hard and fast rules but if you are struggling with the bumps and jumps I have found thinking that you have 12 points to allocate to rebound and bump seems to work. So on some cars 5/5 and 1/1 might work but on others 3/3 and 3/3 might work (as starting points to be tweaked for balance).
So your totals are not far off that.
But note I only go down this path IF the car is struggling with bumps and jumps. If it handles them ok then I am actually allocating 20+ points total to rebound and bump (mainly rebound).
If you have any instability it may be the 0 rear decal (I use 0 but if its loose I increase it a little) but the other numbers that jump out at me is the toe. 1.0 on front is insanely high but 0.2 is up there for the rear too. I sometimes use toe but usually between the ranges 0 and +0.3 on front and between -0.2 and +0.1 on rear.
I’ll give your Raptor a spin and see how it’s handling compares to mine.
The toe numbers came from the same youtube vid that I pulled the tire pressures from. I did a bit of research on how toe affects handling. On the coastal run event there’s a gravel hairpin about 23% of the way through that I was amazed how easily the raptor tracked through it. Now I think I know why.
I think I’ll take it back out on one of the cross country circuit events where I can get into a rhythm and able to detect setup differences as I make adjustments.