eXcelerate RC Prodigy Formula 1
#1084
Tech Addict
Joined: Jan 2003
Posts: 569
From: Montréal, Qc
Raced the car last weekend. It was very fast, I'm quite happy with the handling. Unfortunately, had some durability issues during the mains that probably costed me the victory. Learned a few things though! Rear droop is critical! too much and you will definitely have the rear dampers come out with just being too agressive on the kerbs. I ended up using button head screws with shims to set it up. Beware that you need very thin shims to adjust because the lever is very short and a tiny change makes a big impact on the final droop. Basically, a 0.25 mm shim changes the droop by 1.5-2.0 mm. Using some 0.05 and 0.10 shims, I was able to set it to my liking. Other thing I found out is you need threadlock on those droop screws and the purple one won't be enough. You need blue otherwise the screws will back out and cause all sorts of issues. Ask me how I know! Played a bit with the pivot heights. I could definitely feel the difference for the roll, not so much for the up and down.
The Excelerate tires were great. Brand new, they needed about 2 practice runs to be perfect and they stayed consistent all weekend long after that. I don't know if they changed the front rims, but with this new set, the bearings fit much tighter than on the first set I had.
Martin Paradis
The Excelerate tires were great. Brand new, they needed about 2 practice runs to be perfect and they stayed consistent all weekend long after that. I don't know if they changed the front rims, but with this new set, the bearings fit much tighter than on the first set I had.
Martin Paradis
Last edited by rhodopsine; 05-08-2026 at 09:37 AM. Reason: forgot something
#1085
Joined: Feb 2011
Posts: 8,405
Too wide by only 1.96mm or less on the diff side with excelerate rims, by my calculations with my good eye(..lol..)... It might be good with other offset rims...This issue is better solved with better offset rims(if available) or run two millimeters shorter on the left side(ouch): associated F1 ball diff kits might be very hard to get...Best to change the Roar Rules to 196mm or 200mm F1 width just like the 1S/13.5t rule....lol....None of the tracks tech F1 rear width anyway...
Last edited by bertrandsv87; 05-08-2026 at 06:29 PM.
#1086
Many of you saw the F1 team kits hit the site last week. These have all the go fast parts that people like Brayden Mahar have been using to stack up podium finishes this season. Ken confirmed that all newly boxed kits will have all upgrade parts included. I love that Ken and Josh do these rolling changes.
Some other parts now available. F1 electronics tray, F1 car stand, thicker V2 damper rod forks to eliminate bending, and new metal pivot sockets (which work best with the new F1 roll plates that have screws to lock in the pivots).




Some other parts now available. F1 electronics tray, F1 car stand, thicker V2 damper rod forks to eliminate bending, and new metal pivot sockets (which work best with the new F1 roll plates that have screws to lock in the pivots).




#1090
R/C Tech Elite Member
iTrader: (8)
Joined: Aug 2008
Posts: 1,179
From: CT
Or your wing has been abused and is bent down.
The wing edges should sit 2mm above the chassis to begin with so the corners should naturally be 6.2mm by your ride height.
How much droop? Could be dropping the nose to hard on entry.
What spring? Maybe some more preload or find one slightly heavier to help stop the nose from dropping so fast.
Heat the wing and curve the ends up slightly.
Raise ride height some ... 4.5/4.8
At 4.5 ride height I was just touching the outer front corners.
I reduced droop to less then 1mm and stepped my front springs up slightly to another brand while tuning the car.
After those two changes I hardly touch the corners unless i slammed the car in on a 180
#1091
Mini torch, you can heat it up and put a little bend in there to keep it off the track.



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