Your R4 will probably accelerate better with 17/60 and 22/55...Lower gearing sometimes hinder acceleration...

how would a lower ratio accelerate faster/better?

I run 16/60 21/55 for the tracks here in Florida , i believe the 17 tooth is better big tracks with long swipers a long straight away ,

going to be installing the v1r4 evo3 rear differential r4evo3 receiver box ,looking at the 2spd assembly also ,looking at the upper deck modifications, from Shimo,s car from the 04 Ifmar Worlds



I i the r4 receiver box fits, I will be testing the r4evo3 shocks ,the 2spd also and few other things to see if the old breed and compete with the new don't worry still my r4evo3, im doing because I got hug deal on RRR,s with 3 races seasons of parts and the brand Shimo kit came with the deal and a Fwo5r ,and a fwo5 rtr .

There is a sweet spot for these .12 engines where the car accelerates better: it's usually around 7.0 to7.2fdr for the first gear and 4.8 to 5.0fdr for the second gear...Any gear higher or lower just causes overreving or lugging of the engine without really improving the vehicle's acceleration or top speed on a standard rc racing track, unless you have unlimited space like the lostallo massive track....

Have my Kyosho, s ready to for the race next week I will be focusing on the RRR to see how the changes I have done performance wise.

After 10 years of no racing this is my 3rd was able to put r4evo3 in 7th position for a 30 Bmain wish me luck ,the only Kyosho at the Cow Patty Classic

second picture

second picture

Qualified 7th in B main car was on rails after some laps i was able to get into 3rd position which was a great for me, mind you im running the Idm Picco Daniel lelasi tuned 12 ,with that i was making 5min with no problem where the newer generation 12 could maybe make 4:30 as far as runtime ,well after pit stops I took over the lead and was in the bump position, where I had the bump position locked to make the A final ,mind you this was my 3rd in over 10 years, well bad news was came fast on lap 37 the rod went, rookie mistake on my part,I noticed the engine was getting faster normal , i able to run with 8th scale down the back straight ,and when Picco gets faster then normal, then the rod needs to be inspected and changed well I did neither ,but all in all the car performance was incredible being the only Kyosho and all plastic car ,and yes i was running a locked front diff aka jb weld filled, on 40/42. The setup i ran with the help of Chris Tosolini ,setup was on point didn't have touch the car ,and the clutch was setup by Diatta ,and tune was done with help on Jerry G, tires were Hotrace white rims,I will doing the Winternats in February but I will post my setup soon.ps any have any r4s they are wanting to get rid let know thanks.

Ahahahah.......Nice to hear the great results in your race with the 5minute Picco evo3 versus the current crop of 4minute engines. Maybe the picco would have been faster with the 17/60 and 22/55 gearing, but at least we now know it can compete easily....Good luck at the next race...Change the rod before the main next time !!! MWrc products might still have these conrods in stock....

17 tooth ddidn't work ,the traction was super high and i used the Balestri Blood tire sauce, so 16/61 21/55 was perfect for the 220×100 track and you to have a good strong punch off the corners, anf with the sweeper onto the straight away ,so i focused more on the Picco,s bottom end torque .Running locked front diff with 100,000 in the rear.