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Roche Rapide P12 Evo 1/12th Competition Kit

01-03-2019, 05:19 PM - Wikipost

R/C Tech ForumsThread Wiki: Roche Rapide P12 Evo 1/12th Competition Kit

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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

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11-11-2019, 05:56 AM

#151

vafactor

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OUCH!!!

11-11-2019, 06:17 AM

#152

antlockyer

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ch indeed, however those little sacrificial plastic part on the end of the carbon arm are great. I've jut rebuilt the car everything else is straight and good to go. It cost me and upper arm, a turnbuckle and a lower pivot. We are talking full speed 3.5t boosted into a wall. I'll take that result any day.

Flygio, Antimullet and erikras like this.

01-02-2020, 05:59 PM

#153

JC3

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Just bought my first 1/12th scale car. Do these numbers on the bottom of the chassis have any particular significance?

01-30-2020, 02:11 PM

#154

bigtee01

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Front lower bulkhead

Building a p12 evo i notice the kit lower bulkhead and option lower bulkhead +1.5 version and i notice on some setup sheet some use the +1.5 bulkhead and some dont whats the purpose of the option bulkhead. Thanks for inputs

01-30-2020, 11:30 PM

#155

antlockyer

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Just makes the front wider and lowers camber gain. It's an essential for me in mod and 13.5 with a spool.

02-05-2020, 03:40 AM

#156

JC3

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As some have suggested, I've decided to run one side tube instead of two. I'm running 10K in the one tube. Checking tweak with both tubes installed the tweak was perfect. With one, the tweak was way off which I think makes sense given that your removing resistance from one side. When running one tube is it necessary to compensate for the missing tube by increasing spring pressure more than you would with two tubes?

Last edited by JC3; 02-05-2020 at 04:04 AM.

02-05-2020, 04:07 AM

#157

hanulec

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always tweak the car w/ the tube(s) disconnected
problem solved!

02-05-2020, 04:22 AM

#158

JC3

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Quote:

Originally Posted by hanulec

always tweak the car w/ the tube(s) disconnected
problem solved!

Okay, thanks. I'll see how it is with the tube disconnected.

02-05-2020, 04:50 AM

#159

redmonster27

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Look out guys. Jc3 has ventured in to foam tire 12th scale wont be long now you'll be putting a 13.5 in that thing wanting to go fast. Lol.

JC3 likes this.

02-06-2020, 05:20 AM

#160

FSimi

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Battery fit.

Hello,
I build my P12 evo, stock setup.
I tried to fit the battery but it is touching the shock spring retainer and the nut under the upper pod plate.
Did anyone have the same problem or I missed something?
Thanks

02-06-2020, 05:30 AM

#161

JC3

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Quote:

Originally Posted by FSimi

Make sure that you have the 2mm spacer under the stud on the servo mount.

02-06-2020, 05:33 AM

#162

JC3

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Quote:

Originally Posted by hanulec

always tweak the car w/ the tube(s) disconnected
problem solved!

The single tube worked just fine. Ended up with 30k in it by the end of practice and the handling was outstanding!

02-06-2020, 01:34 PM

#163

JC3

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For the record, I was able to fit a Hitec HS-5245MG Digital Metal Gear Mighty Mini Servo on my chassis using a combination of the Roche large and standard servo mounts. I like the combination of specs and cost on this servo.

Price: $40!
Transit time: 0.12 sec/deg @ 6V
Torque: 76 oz/in @ 6V
Weight: 32g (1.12 oz)
Length: 32mm (1.3")
Width: 17mm (0.7")
Height: 31mm (1.2")

02-07-2020, 02:41 AM

#164

FSimi

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Quote:

Originally Posted by JC3

Make sure that you have the 2mm spacer under the stud on the servo mount.

Hello,
Thank you, but if I put a 2mm spacer under the stud the thread is not long enough to tight the stud
and the battery still not fit under the shock.

02-07-2020, 04:09 AM

#165

JC3

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Quote:

Originally Posted by FSimi

Hello,
Thank you, but if I put a 2mm spacer under the stud the thread is not long enough to tight the stud
and the battery still not fit under the shock.

If you have the servo and pod built properly, the only other reason I can think of is that you have a battery that is not a standard size. I'm not even using the Aluminum Servo Mount and my battery fits with just a 2mm spacer under the ballstud. Here are the dimensions of a standard size battery that should fit: (L) 93mm x (W) 47mm x (H)18.5mm. Make sure that the battery is sitting properly in the chassis brace (see picture below.) The battery shouldn't be anywhere near "the nut under the upper pod plate."

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