		Review by Brian Stewart for Speedy RC Australia Roche Products International P12V2 Chassis Additional images and information from Kimihiko Yano and team drivers.
		ROCHE P12V2 build for Speedy RC NEW design front graphite lower arm with lightweight pivot ball. NEW design graphite stiff front brace for high traction track. Optional flex front brace for low traction. NEW design servo mounting position. Central chassis servo mark. NEW 7075 aluminium lightweight oversized kingpins NEW Aluminium single piece steering knuckle with pre-built POM insert and M3 screw front wheel axle. NEW design aluminium lightweight motor mount and left bulkhead. Narrow profile. NEW lower mounting position upper pod plate. UPDATED center pivot and rear pod geometry. Improve initial steering and ground clearance Carbon rear solid axle. Modified to suit majority brands spur gears. NEW 7075 aluminium lightweight wheel hub. Updated to suit M3 threaded nut NEW design 7075 aluminium main chassis. Narrower and shorter front for maximum ground clearance. Ultra long side link provides more consistent cornering. Optional short links and positions. NEW design aluminium side spring mount. Outer/Inner position for simpler spring feel adjustment. Aluminium rear axle tube for consistent bearing alignment. Fine adjustable center pivot brace Triple-hole rear body adjustment for rear body balance and stiffness. Roche big bore center damper with soft center spring & POM piston Race-proven Roche tube damper for smoothest possible damping Black anodized 7075 aluminium turnbuckles. Aluminium 4.3mm steering and side tube ball cups. 4.8mm center damper ball cup and ball stud. Large hard foam bumper or 3D printed option. Special design M3x6mm ULP (Ultra Low Profile) screw profile Accepts Sanwa, Power HD & similar size servos. Optional 6g balance weights for tuning chassis roll and weight bias to suit each track conditions.
		Roche P12V2 - Roche P12 is a former World Champion and multiple champion from all regions.
		Always nice presentation from Roche
		Last bag with the decals, chassis plate and manual barcode. This is a welcome industry change. Less waste and expense.
		Press the aluminium balls in through the larger diameter side of the side links. Next install the screws and tighten until the balls are still free without any binding
		Prepping the side plates. Japanese team developers Masahiro Hori, Shota Watanabe and Hayato Ishioka, recently shared several build tips. Here an M3x6 screw is used to press the threaded insert into the plate.
		Side links attached to plates. NOTE: I am using spare GR.5 Titanium UFO screws from Pitlane-R.A.B. Hobbies.
		The 2 piece Aluminium Chassis and CNC recessed tray mount the Lipo as low as possible. Only 0.5mm from the bottom of the chassis. This has been a proven LCG design feature and borrowed from other designs such as the Bezerk, Litesabre Pro-10. The effort to maximise ground clearance is clearly visible. Integrated front suspension and bumper mounting points.
		Pivot Plate assembly. The recommended roll centre adjustment is 0.5mm. Standard kit setup is a 0.5mm stainless shim fitted to the pivot plate. No shims are fitted to the roll centre plate but are included
		Use a quality anti wear grease to lubricate the ball and mount. I've used the "PEPE" brand grease from Speedyrc. Any joint grease will be fine.
		Pod plate assembly fitted to side links. Continually check for any binding. Very smooth design.
		Robust integrated aluminium bulkheads and axle tube. The locator dowels and recesses are visible.
		Pod bulkheads fitted to the carbon brace. Locator dowel pins further minimise tweak. 6x 0.3mm stainless steel ride height shims are included. 0.1mm shims are optional #230341 Left bulkhead features a relief for endbell clearance. Very simple, robust and efficient.
		Rear pod width reduction is evident. Team Powers Actinium 3.5.
		Pod assembly fitted to the pivot plate with two easily accessed screws.
		Pod Fitted to the Pivot Plate. Efficient minimal ground contact design.
		Body/Spring mount side plates and aluminium spring retainers. The grub screws are pre-treated with blue thread lock paste, nice touch. The locator pins can fit in two optional holes which dictate a wide(firm) or narrow(soft) side spring setting. Further detail is visible in the following five images from the Japanese team developers. The right (left in above image) is also fitted with a single m2.5 screw and nut to attach the side tube. Pay attention to suggested side spring grub screw length. In race ready trim, side springs "touching" the plate is always a good start and easiest to de-tweak.
		Narrow
		Wide Ensure to install One m2.5 screw and nut to the right mount.
		Side Plates mounted
		Single side tube assembled - Kit recommended oil is 50K
		Front tray stand offs fitted
		Upper carbon plates assembled.
		Shock assembled - Use a light smear of o-ring grease on the adjusting collar and o-ring. Kit setting is 600 cst
		Side tube fitted to top plate.
		Top plate assemblies installed with single side tube. Gr.5 Titianium UFO screws from Pitlane Hobbies.
		Top plate assemblies installed with single side tube. Gr.5 Titianium UFO screws from Pitlane Hobbies.
		DVS-W Shock mounted. No binding anywhere
		Oversized aluminium “4" deg. Caster kingpins are provided. POM guides are pre-installed to the treated aluminium knuckles. Simple camber adjustment using the machined alignment marks. Manual suggests 5k oil. Optional #330292 3 deg. #310314 6 deg. Optional Shims #530101 0.2mm - #530093
		Front suspension plate pre-assembled with aluminium balls. Optional flex brace pictured with kit high density foam bumper. Carbon bumper plate.
		Optional 3D printed bumper. #240331
		Assembled - Detail of camber alignment mark. Rear pictured is 1.5 Deg. - Mid 1 Deg. Caster tuning is simple change of rear shims between the chassis plate. My first on-road kit was a Bolink Eliminator sport when it was new in 1991. Effectively a similar kingpin arm plate system. Great to see these suspension styles re-imagined over the last 5 years.
		I've fitted large diameter 0.3 spring steel washers and 1mm carbon washers for a little reinforcement.
		Aluminium servo mounts fitted. Maximum servo size is 29x29x13.5mm Optional Aluminium servo saver plate(Xray) #310301
		Small o-rings are fitted to the axle flange bearings. They cushion against small Impacts and vibrations.
		Rear Carbon Axle pre-installed with kit suggested spacers.
		Rear axle installed. Optional #510102 M3x6mm Alu, wheel screws



		Finished - awaiting the rest of the electronics to arrive.
		Shota Watanabe - Tsukuba (Yatabe) EPS-J winning setup - New track records. Kimihiko Yano - Japanese Roche Distributor
		Chassis provided by Speedy RC - Australian Roche distributor. Options #310301 Aluminium servo saver-Xray - To be used with XR-372503 #220350 Carbon Front Flex Brace #430048 Roche Ball diff-Blk #240331 3d printed rubber bumper #230329 2x6 Brass side weights #310314 6 degree Caster Kingpins #530042 rear axle shims #410011 Rear axle spacer set Red #410022 Rear axle spacer set Blk #510102 M3x6mm Alu, wheel screws #510059 Blk Alu. M3x6 mini servo screws #230341 0.1mm stainless rear ride height shims #230317 0.3mm stainless rear ride height shims #210352 Alum. motor fan mount #330165 Soft side spring KIT #330166 Medium side spring #330020 Soft side spring white #330021 Medium.side spring yellow #330022 Hard side springs pink #330297 Front springs KIT ️Silv. #330298 Front medium Soft Blk. #330299 Front medium Gold #330300 Front springs hard #330136 DVS ctr.spring-Soft Kit #330137 DVS ctr spring Med. #330138 DVS ctr spring Hard P12V2 Manual suggested options.