Category Archives: PR Racing Advice

1:10th Euros 4wd Day 1 – Club Racing

FIN

Isn’t it amazing how often it happens, that you travel to a big race, and you end up racing the same damn people you race back home? It’s just insane how this works, check out Team Finland here after practice above.

In 2wd, before the last round, there were 5, yes FIVE Finnish drivers in the B main, then Joona made the main, and Karri dropped into the C. But still, it’s just strange how it works out.

Today was a tough day for me, but I still think I can pull it together tomorrow. Will be interested to see my pace over 5 minutes. Max had a great day once again, it seems that all that time practicing is beginning to pay off! With an unknown car in a relatively unknown class at his first Euros, clearly B main pace. Looking good so far!

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1:10th Euros Day 3 – 2wd Mains – SHHHHHhhhh…

Track has actually turned out to be a lot of fun!

Track has actually turned out to be a lot of fun!

 

Today we had 2 more qualifying rounds, followed by all finals. It’s funny how it goes, both Max and me made the B-main unexpectedly, yet after today, sort of feel like it could have gone quite a bit better! In the end Max was 18th and I was 19th after a messy B-final. We were happy with the cars and hope next years Euros are on dirt, so we can practice before that one and attend again! Where are the Euros 2017? Does anyone know?

One thing that is a bit strange at the Euros, and something I don’t agree with is how everyone has to be all quiet during the mains. With there being no announcing either, it makes the mains really unentertaining to watch if there isn’t much on track action. I’m sure the drivers can handle noise from the crowd or an announcer! More fun for everyone.

Neil Cragg won the Championship again, after I don’t know how many years. Great for him and his team. He is a good guy and one of the few multi time champions who based on my understanding has never been a full time professional racer. Amazing. “Come on Neil!”

Now the real racing begins! YIPPEE!

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1:10th Euros 2wd Day 2 – Over Achieving & Breast Milk

Real Offroad IS BACK! Although there is still carpet here....damn. Well almost!

Real Offroad IS BACK! Although there is still carpet here….damn. Well almost!

Today was a strange day. It looks like I have entered the level or average along with Max in 2wd. That’s a first! I’m 15th and Max is 17th after 3 rounds, with 2 more to go. I believe this proves that the PR Racing new mid motor car is really good, because I sure haven’t improved in 2wd, and neither has Max! We haven’t run 2wd, I don’t know when Max last ran 2wd, I think some time last year. As for me it was at the Reedy Race in January. So great job PR Racing! Let’s take a look at what we have figured out at this race to dial it in even more to this slippery bumpy track!

 

The biggest improvement is the hole we drilled in the rear hub. A higher hole (3mm here) really improves rear grip a lot. Surely a change we will get PR to do in the future!

The biggest improvement is the hole we drilled in the rear hub. A higher hole (3mm here) really improves rear grip a lot. Surely a change we will get PR to do in the future!

 

We moved the rear arm further forward, also for more grip!

We moved the rear arm further forward, also for more grip!

 

We ground down the top of the steering knuckle, and ended up moving it up 1mm, to smooth out the steering.

We ground down the top of the steering knuckle, and ended up moving it up 1mm, to smooth out the steering.

 

We moved the c hub forward, also for smoother steering.

We moved the c hub forward, also for smoother steering.

 

I will post the final setup we ended up with after the race. For now we are happy to be in the B-final, and will try and improve as much as possible tomorrow. The track is breaking up quite a bit, and it will be interesting to see how bad it gets! Bring on tomorrow.

Today as we were waiting for the restaurant to open, we got some beers at a cafe. I ordered mothers breast milk (in Spanish) for Max. The waitress laughed and surprisingly brought Max some warm milk. Possibly breast milk. That's for his amazing 9th place in round 2!

Today as we were waiting for the restaurant to open, we got some beers at a cafe. I ordered mothers breast milk (in Spanish) for Max. The waitress laughed and surprisingly brought Max some warm milk. Possibly breast milk. That’s for his amazing 9th place in round 2!

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1:10th Euros

Made it to Spain. Follow it here.

My SB401 Staring Setup – After 5 Days

You can use 47 different combinations of batteries and locations, and motor locations. I chose this one. I like it. Max built his differently, so we will see which is better. He has the new conventional motor left rear, battery right rear. I don't believe in that.

Above is the configuration I use. Below is my setup sheet.

 

SB401-Setup-JQ-Starting-July2016

Drilled longer link hole

Drilled longer link hole

Rear link drilled lower

Rear link drilled lower

30g behind the receiver. Nitro guy wiring.

30g behind the receiver. Nitro guy wiring.

As for the 2WD, I don’t know if there is much point of posting a setup. Need to figure it out first….at the Euros!

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Euros Prep Day

Prep day! Too busy to post. Tomorrow I will post my setup sheets and 4WD notes!

Prep day! Too busy to post. Tomorrow I will post my setup sheets and 4WD notes!

PR Racing 4wd Testing/Euros Prep – Day 5

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953 laps. That’s how much I managed to do as my Euros prep. That’s about 6h of run time. That’s 953 laps more than last year though, so not too bad. The thing about driving 10th scale is it is easy to identify driver error. Somehow in 1:8th, there is so much going on, it’s harder to analyse purely the driving aspect and how it affects your lap time. After getting the car good, and then getting consistent, which probably took 600 laps, I focused on my driving, and what I found was that when I think I am concentrating and driving, I would do a 22.4, then when I really concentrated I would do a 22.0 or so. A few tenths by concentrating. Wheel spin affects the laptime. I arguably had too much power, with a LRP 6.5, but watching the big boys, like Cavalieri and Maifield, they always have tons of power, so I want tons of power too. The thing is that pulling the trigger and spinning the wheels was slower. Calming it down a bit, and just feeding enough power to the wheels on the short straights, and then smashing it on the back straight, resulted in about 0.3s faster lap times. No joke, going slower was faster once again. Going a bit slower into the corners and trying to maintain the speed around them resulted in the best laps every time. It’s a balancing act, and that’s what the best drivers are so good at. If you want to see someone who is great at driving a car within it’s limits and maintaining speed around the track watch Marc Rheinard drive. It almost looks slow at times but the lap time is super good.

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The thing is, that to get that result posted above, it took me 900 laps. A talented driver will do that after maybe 40-50 laps? How the hell will I get to that point? It’s not easy, that’s all I know. At the Euros we don’t get 900 laps of practice.

Better build that 2WD now….

PR Racing 4wd Testing – Day 4

You can use 47 different combinations of batteries and locations, and motor locations. I chose this one. I like it. Max built his differently, so we will see which is better. He has the new conventional motor left rear, battery right rear. I don't believe in that.

After the great first day, I sort of hit a wall, then 2 and a half frustrating days, and then today right at the end, I found something, and everything was great again. 10th scale is a good change of pace, and gives you as a designer a fresh look on things and new ideas to try for 1:8th. The 10th scale is so sensitive to setup and with a short lap, and setup changes making a couple of tenths differences here, another couple tenths there, it is both rewarding and frustrating to test things.

I have found that the 4wd buggy is really really good when things go a bit wrong. Hitting curbs, pipes, bumps, it just keeps going. It has a ton of up-travel, and that is probably the main reason for this. After figuring out the basic setup for the links, it is a pretty neutral car to drive, it doesn’t do anything strange. I’m running the motor in the front, which gives a 48% front, 52% rear weight bias, which is very much weight forward for 4wd cars. The rear felt a bit skatey, but I got it good now.

Extra link hole drilled below stock holes

Extra link hole drilled below stock holes

The front link, I run middle on tower, 2mm under outer ballstud. The knuckle I run with the 2mm shim up top. On the rear I drill an extra low hole on the tower below the lowest hole, and then drill a long hole on the hub, 3mm longer than stock. I did this after analysing the car in CAD. It is interesting to see that the UK drivers had reached the same conclusion from testing and had drilled an extra low hole. Theory and practice meet again! I lengthened the link in order to make the rear end more stable, as the link is really short on the hub as stock.

Drilled longer link hole

Drilled longer link hole

Best pistons so far, 2×1.7mm front, 350 oil, 3×1.7mm rear, 300 oil. The softest PR springs, Yellow, were ok, but I had better luck with AE white front, green rear. I actually wanted to try softer but I didn’t have any! I have asked PR for softer springs, and they are making some. I have the shocks stood up all the way on the tower, and inside on arms. I’m running 2 anti squat shims under the C-plate, instead of the 1 stock.

The car felt really good now, on a super loose track. Oh, no swaybars either, none. The car feels balanced and comfortable to drive fast now. I am assuming we have traction in Spain, so it will be interesting if the only changes I need to do are diff/shock oils, swaybars, shock springs. I hope so! If I have to go over everything again to make it work, it will be tough!

I attached the front shocks like this because the angle looking from the side is a lot better. I still have to try back to back to be sure of the difference.

I attached the front shocks like this because the angle looking from the side is a lot better. I still have to try back to back to be sure of the difference.

Smooth Shocks PR Racing Day 3

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I have found that the o-rings are quite sticky and tight, so I decided to only use one instead of two. I replaced the other one with one of those shims with a lip on it. This made the shocks nice and free. Apparently PR have/are working on some different o-rings for smoother action.

Today I also drew the car in CAD and figured out a setup to run. I will write more about that tomorrow. It’s late. We only left the track just before midnight.

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PR Racing 1:10th Day 2

Do you like my paint?

Do you like my paint?

Apparently I got a carpet version of the car :-). Anyway I had all the parts needed for dirt it seems, the centre diff being one of them. Today I completely removed the upper decks. The car is quite stiff stock. Tomorrow I will still experiment with the side braces, I only removed some screws out of them today, but the car is still so stiff, that I think I will remove them altogether tomorrow and see how it goes.

I have been running 3 hole 1.6mm pistons, with 450/350 oils, but tomorrow I will try 2×1.6/2×1.7 pistons which a lot of people seem to be running in other cars.

Still, so far so good! I haven’t broken anything so far. I bent a rotor though, after hitting a curb and coming to a dead stop at the end of the straight. Crazy shit!

IMG_4248 IMG_4249Tried trial and error geometry stuff at the track. Tomorrow morning the car will get the CAD theory treatment, and then I will go back and try whatever I come up with. Happy days!

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