Go Back  R/C Tech Forums > General Forums > Electric On-Road
Roche Rapide P12 Evo 1/12th Competition Kit >

Roche Rapide P12 Evo 1/12th Competition Kit

Like Tree71Likes

Roche Rapide P12 Evo 1/12th Competition Kit

    Hide Wikipost
Old 01-03-2019, 05:19 PM   -   Wikipost
R/C Tech ForumsThread Wiki: Roche Rapide P12 Evo 1/12th Competition Kit
Please read: This is a community-maintained wiki post containing the most important information from this thread. You may edit the Wiki once you have been a member for 90 days and have made 90 posts.
 
Last edit by: hanulec
Questions/Answers:
Q1. Will the P12 Evo support a traditional style steering servo setup?
A1. Yes. The chassis supports this, but parts are not included.

Q2. Will the P12 Evo support prior Roche P12 front ends featuring a Xenon lower arm?
A2. Yes. Prior front ends will directly bolt on to the new P12 Evo chassis

Q3. What is the maximum size servo width that can be used on the P12 Evo?
A3. Maximum servo width is 33mm

Q4. Which servos fit into the P12 Evo?
A4. (not a complete answer -- working on building up a list)
  • Sanwa SGR-HR (must cut off the top/bottom additional case pieces)
  • Sanwa SRG-HS (must cut off the top/bottom additional case pieces)
  • KO Propo RSx3-12 Digital Mini Servo
  • Futaba High Voltage BLS671SV S.Bus2 HV SX Mini Servo
  • Hitec HS-7235MH Hi-Voltage "Hi-Speed" Metal Gear Digital Mini Servo
  • XPert MI-3301

Print Wikipost

Old 02-08-2020, 12:59 PM
  #166  
Tech Regular
iTrader: (4)
 
Join Date: Apr 2015
Posts: 330
Trader Rating: 4 (100%+)
Default

Quick question i see some p12 evo with the stock steering and servo setup and some with the floating servo setup like on the p12 17. What is the advantage of doing yhe floating servo setup?
bigtee01 is offline  
Old 02-08-2020, 03:08 PM
  #167  
R/C Tech Elite Member
iTrader: (28)
 
hanulec's Avatar
 
Join Date: Sep 2007
Location: @ the post office
Posts: 9,607
Trader Rating: 28 (100%+)
Default

Originally Posted by bigtee01 View Post
Quick question i see some p12 evo with the stock steering and servo setup and some with the floating servo setup like on the p12 17. What is the advantage of doing yhe floating servo setup?
The bellcrank seems to make the car rotate harder in the center of the corner (thru rear traction loss). I took the bellcrank off when I went to the UK and sadly it took me until the snowbirds A-main to put it back on. That was a big fail on my part.

When racing at CARS the weekend before the world's I felt the std 1/12 steering produced more corner entry steering and had more gear grip (less sliding).

​​​​​for CRC black carpet I think the bellcrank is a big advantage, especially in slower classes
hanulec is offline  
Old 02-09-2020, 02:22 AM
  #168  
Tech Regular
 
antlockyer's Avatar
 
Join Date: Mar 2016
Location: South Coast of England
Posts: 433
Default

I'm running the bellcrank on my stock car and it feels super easy to drive with mega corner speed, I've been running the direct in mod and I've never felt as happy with it as the other car. Will try bellcrank in that at some point.
antlockyer is offline  
Old 02-09-2020, 08:48 AM
  #169  
Tech Regular
iTrader: (4)
 
Join Date: Apr 2015
Posts: 330
Trader Rating: 4 (100%+)
Default

Originally Posted by hanulec View Post
The bellcrank seems to make the car rotate harder in the center of the corner (thru rear traction loss). I took the bellcrank off when I went to the UK and sadly it took me until the snowbirds A-main to put it back on. That was a big fail on my part.

When racing at CARS the weekend before the world's I felt the std 1/12 steering produced more corner entry steering and had more gear grip (less sliding).

​​​​​for CRC black carpet I think the bellcrank is a big advantage, especially in slower classes
thanks
bigtee01 is offline  
Old 02-10-2020, 08:16 AM
  #170  
Tech Elite
iTrader: (16)
 
Slapmaster6000's Avatar
 
Join Date: Sep 2004
Location: Edmonds, Wash.
Posts: 3,169
Trader Rating: 16 (100%+)
Default

Originally Posted by bigtee01 View Post
Quick question i see some p12 evo with the stock steering and servo setup and some with the floating servo setup like on the p12 17. What is the advantage of doing yhe floating servo setup?
To add to Mike's observation (and my jury is still out), it may have a lot to do with grip level which servo mount works better. I have 2 local club tracks, 1 is a bumpy roll out/roll up bull ring that is probably a 2 out 5 on the CRC black carpet grip-o-meter. The other is a semi seasonal very flat flowy regularly vacuumed that could be as high as a 3 outta 5. I dropped the traditional float mount on the bumpy track and nearly went 0.2ths quicker in 17.5 stock vs my bell crank car that night. Repeated the same test at the flat flowy track and it did not yield anything different other than "feeling" around certain corners.

I am going to test the bell crank shimmed up 2mm + shimmed ball studs to see if the effect is coming more from bumpsteer then how the servo is mounted. I'll find out this Wed.

Brian
Slapmaster6000 is offline  
Old 02-10-2020, 09:21 AM
  #171  
Tech Regular
 
antlockyer's Avatar
 
Join Date: Mar 2016
Location: South Coast of England
Posts: 433
Default

Ackerman (for want of a better word) has a significant range with the bellcrank. With the ballstuds all the way back there is only 3 degree less outside wheel deflection for a 20 degree inside wheel. Makes for quite a feel difference.
Flygio likes this.
antlockyer is offline  
Old 02-10-2020, 10:11 AM
  #172  
R/C Tech Elite Member
iTrader: (28)
 
hanulec's Avatar
 
Join Date: Sep 2007
Location: @ the post office
Posts: 9,607
Trader Rating: 28 (100%+)
Default

With the bellcrank, I run the optional longer ball studs with 3-4mm of shim to control the aggression of corner exist steering.

With 3mm it pushes more

​​​​​with 4mm it wraps the corner more

Optional ballstud--
4.3x15.8mm Ballstud, Steel, 4 pcs
antlockyer likes this.
hanulec is offline  
Old 02-11-2020, 02:30 PM
  #173  
Tech Addict
iTrader: (18)
 
anythinggas's Avatar
 
Join Date: Feb 2008
Location: 3rd rock from the sun
Posts: 662
Trader Rating: 18 (100%+)
Default

Just purchased my first Roche and was wondering which servo saver everybody is using? or will the standard XRAY servo saver work (got 3 of them)
anythinggas is offline  
Old 02-11-2020, 03:06 PM
  #174  
JC3
Tech Master
iTrader: (8)
 
JC3's Avatar
 
Join Date: Feb 2018
Posts: 1,057
Trader Rating: 8 (100%+)
Default

Originally Posted by anythinggas View Post
Just purchased my first Roche and was wondering which servo saver everybody is using? or will the standard XRAY servo saver work (got 3 of them)
I'm using an Xray stiff saver without any problems. In fact, it's the only one I had that met the 19mm distance spec in the instructions. Also, the one pictured in the instructions is an Xray saver.
JC3 is offline  
Old 03-30-2020, 03:59 AM
  #175  
Tech Apprentice
 
Join Date: Nov 2007
Posts: 60
Default Spur / pinion / Tyre size

Hi guys, I need some information. My rear tyre diameter 50mm. I am using pinion size 22T and spur 96. It seems that the car is not enough power for that kind of tyre size. Running a 6.5T motor blinky mode. What is the correct pinion should I try for that tyre size 50mm. I do not wish to true the tire as I don't have any tire true for 1/12 . First time running an EP pancar. More to GP car.
shambmk is offline  
Old 03-30-2020, 04:57 AM
  #176  
R/C Tech Elite Member
iTrader: (28)
 
hanulec's Avatar
 
Join Date: Sep 2007
Location: @ the post office
Posts: 9,607
Trader Rating: 28 (100%+)
Default

We run a 35mm rollout with 3.5 blinky on carpet

As for lack of a tire truer -- id highly recommend investing in one or at least asking someone to truer your tires for you.
hanulec is offline  
Old 03-30-2020, 07:48 PM
  #177  
Tech Addict
iTrader: (5)
 
Join Date: Jul 2013
Location: Brisbane
Posts: 595
Trader Rating: 5 (100%+)
Default

Originally Posted by shambmk View Post
Hi guys, I need some information. My rear tyre diameter 50mm. I am using pinion size 22T and spur 96. It seems that the car is not enough power for that kind of tyre size. Running a 6.5T motor blinky mode. What is the correct pinion should I try for that tyre size 50mm. I do not wish to true the tire as I don't have any tire true for 1/12 . First time running an EP pancar. More to GP car.
For a 6.5t blinky I normally aim for a rollout of about 55mm. So with your tyres you'll want gearing of about 32/90 (or 34/96, but unsure if you'll have room for it). Your 22/96 is way too low. If you don't have a truer, look at brands such as Ulti - they come trued to 46mm out of the packet, which will be better than 50mm.
Scott_T is offline  
Old 04-18-2020, 12:41 AM
  #178  
Tech Regular
 
Join Date: Feb 2004
Location: somewhere in the north of england
Posts: 462
Default

Is there another batch for wc pods coming out for this car?

roc-156019 it perfect the motor mounting on it.
Smoking motor.. is offline  
Old 04-18-2020, 07:26 AM
  #179  
R/C Tech Elite Member
iTrader: (28)
 
hanulec's Avatar
 
Join Date: Sep 2007
Location: @ the post office
Posts: 9,607
Trader Rating: 28 (100%+)
Default

Originally Posted by Smoking motor.. View Post
Is there another batch for wc pods coming out for this car?

roc-156019 it perfect the motor mounting on it.
Unlikely
There could be 1-2 left in various people's pit boxes right now around the globe...
hanulec is offline  
Old 04-18-2020, 06:25 PM
  #180  
Tech Addict
iTrader: (50)
 
Join Date: Aug 2015
Posts: 705
Trader Rating: 50 (100%+)
Default

Anyone know where I can find some more front axles (spring steel) part number 330016? Seems that everyone is sold out right now.
tommysnow7 is offline  

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.