• Home
  • CRANKCASES
  • mhr rc-one complete engine crankcase (for yamaha engine)

mhr rc-one complete engine crankcase (for yamaha engine)

Code: 5716668

Read more

Caution: there is important supplementary information concerning this item. Download it here!

Description

Crankcase for all scooters that fit a Yamaha Minarelli LC 50 cc engine as original equipment

Malossi has achieved the impossible, uniting the world of racing motors for scooters thanks to the RC-One Yamaha-Minarelli.

Our technicians have designed the RC-One Yamaha-Minarelli as a platform for bringing together the technical solutions as well as the internal external dimensions with all RCOne Malossi models.

The Malossi RC-One housings have been designed to be used only with 94cc Flanged Mount heating units with external studs. The generous pump housing dimensions are finally adequate enough for high capacity engine blocks. Malossi C-One uses the same transmission both for Piaggio and Yamaha/ Minarelli scooters, linking two worlds which have always been apart by enhancing and giving value to the best elements of both.

RC-One for Yamaha has been designed to be entirely Plug & Play for all scooters equipped with 50cc Yamaha/Minarelli liquid-cooled motors: no modifications to the chassis are required, and the internal section can accept all products in the Malossi selection for the RC-One range, becoming a revolutionary solution for the development of racing components for ALL scooters.

 

THE TECHNIQUE

The base of the cylinder has been inclined by 10° compared to the original drive shaft axle - gears.

This innovative development has allowed Malossi technicians to connect the motor attachments in front of the power unit, doing away with one of the biggest Achilles heels once of standard Yamaha/Minarelli motor housings once and for all. A modification underneath the saddle compartment. The base of the Yamaha RC-One has been designed to only house Malossi cylinders with flange mounts and external studs for the MHR Ø 52 Flanged Mount testa rossa family. The advantages of this solution open the door to the possibility of designing entirely unique cylinders.

The reed valve mount has been significantly changed thanks to the latest 3D fluid dynamics simulation software, allowing Malossi technicians to find the ideal ratios and dimensions. The automatic mixer and mechanical water pump have been removed to reduce dispersion as much as possible. The possibility to perform a native install of a Malossi internal ignition rotor has been allowed. As for the bike itself, RC-One for Yamaha is designed exclusively for scooters with rear disc brakes fitted as standard, and is not designed for the alternative use of brake shoes.

The interaxle spacing has been increased, with a consequential increased stability and precision when taking curves, whereas the gearbox housing has been reduced in size by overlapping the gear wheels. The increased interaxle spacing and the internal diameter means that the starter cover designed for Piaggio scooters is required. All RC-One for Yamaha housings are supplied complete with the components required for installation. Indeed, considering the notable technical differences when compared to standard units, Malossi has decided to include a reed valve, covers, and a special wheel pin in order to use the original rear wheel and make the RC-One perfectly interchangeable with Yamaha/Minarelli wheels and hubs. Another optional is the special rear mudguard to protect and keep the carburettor clean, now positioned at the rear.

The new housings have been designed and built in Calderara di Reno at Malossi's new headquarters, one of the most advanced centres for research, development and production of special parts for motors and scooters. These parts were thought of and produced with one objective: to produce the most innovative racing components for scooters ever.

 

Technical features:

  • Crankcase pair, die-cast material in aluminum silicon alloy with high mechanical resistance.
  • Crankcases inclusive of bearings 5.150 Kg.
  • Crankshaft - clutch shaft wheelbase 270 mm.
  • Crankshaft bearings 20 x 47 x 14.
  • Oil seals FKM plus PTFE.
  • Reed valve VL 18.
  • Intake manifold X360 Ø 21 - 28 length 27.
  • Cylinder stud bolts material: steel 8.8 UNI EN20898/1.
  • Oversized cooling fluid connector: external Ø 18 mm - internal Ø 13,5 mm.
  • Pinwheel.
  • Wheel axle bearing 20 x 47 x 14.
  • Roller gear cover size 16 x 22 x 12.

 

Compatible brands and models

Brand Model
APRILIA APRILIA AREA 51 50 2T LC
APRILIA APRILIA SR NETSCAPER 50 2T LC (MINARELLI)
APRILIA APRILIA RALLY 50 2T LC (MINARELLI)
APRILIA APRILIA SR RACING 50 2T LC (MINARELLI)
APRILIA APRILIA SR REPLICA 50 2T LC <-1999
APRILIA APRILIA SR STEALTH 50 2T LC (MINARELLI)
BENELLI BENELLI 491 SPORT 50 2T LC (MINARELLI)
BETA BETA ARK 50 2T LC
ITALJET ITALJET DRAGSTER 50 2T LC
MALAGUTI MALAGUTI F15 FIREFOX 50 2T LC
MALAGUTI MALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC
MALAGUTI MALAGUTI F12 DIGIT KAT-PHANTOM 50 2T LC euro 2
MALAGUTI MALAGUTI F12-PHANTOM 50 2T LC
MALAGUTI MALAGUTI F12 R LC 50 2T LC euro 2
MBK MBK NITRO 50 2T LC
YAMAHA YAMAHA AEROX 50 2T LC euro 0-1
YAMAHA YAMAHA AEROX 50 2T LC euro 2
YAMAHA YAMAHA JOGRR 50 2T LC euro 2

Spare parts

Product name Code Price
flange for intake rubber ø 21-28 mhr flange for intake rubber ø 21-28 mhr 0713233b 26.84€ Cart
anti-vibration ø 20x8 mm shock absorber support anti-vibration ø 20x8 mm shock absorber support 0816463b 8.13€ Cart
complete gears oil level dipstick complete gears oil level dipstick 1016171 6.83€ Cart
mhr fkm intake rubber for dell'orto ø 28 - 30 carburettors mhr fkm intake rubber for dell'orto ø 28 - 30 carburettors 1313799b 51.02€ Cart
h2o connection kit h2o connection kit 1516211 8.54€ Cart
oil unload plug oil unload plug 1916212 4.09€ Cart
x360 bonneville inclined intake manifold kit for ø 32-34 carburettor for c-one / rc-one crankcases x360 bonneville inclined intake manifold kit for ø 32-34 carburettor for c-one / rc-one crankcases 2017669 63.68€ Cart
compl. electronic ignition cover for mhr c-one/rc-one crankcase compl. electronic ignition cover for mhr c-one/rc-one crankcase 2516232 28.3€ Cart
2 centering bush ø 9,5x6,5x15 2 centering bush ø 9,5x6,5x15 2615853e 5.37€ Cart
reed valve vl18 carb.petal th.0,30 mhr team reed valve vl18 carb.petal th.0,30 mhr team 2715810.c0 70.76€ Cart
circlip ø 43,5x40x1,7 for wheel axis circlip ø 43,5x40x1,7 for wheel axis 3616544b 2.32€ Cart
roller sleeve  ø 16x22x12 (standards clearance) for gearbox crankshaft roller sleeve ø 16x22x12 (standards clearance) for gearbox crankshaft 6615717b 13.42€ Cart
fkm oil-seal ø 30x47x6 mm for wheel axis fkm oil-seal ø 30x47x6 mm for wheel axis 6616199b 9.76€ Cart
fkm oil-seal set ø 18-19  for crankshaft fkm oil-seal set ø 18-19 for crankshaft 6616210 23.18€ Cart
roller bearing with balls ø 17x40x12 (c3 clearance) for wheel axis roller bearing with balls ø 17x40x12 (c3 clearance) for wheel axis 6616543b 11.21€ Cart
roller bearing with balls ø 17x35x10 for engine mount roller bearing with balls ø 17x35x10 for engine mount 6616766b 6.15€ Cart
roller bearings set ø 20 for crankshaft for 50 cc scooter with piaggio and yamaha engine roller bearings set ø 20 for crankshaft for 50 cc scooter with piaggio and yamaha engine 6617154 103.46€ Cart
pinwheel shaft 138,2 mm (coupl. ø 27) pinwheel shaft 138,2 mm (coupl. ø 27) 6716430b 86.71€ Cart
2 connectings for cylinder 2 connectings for cylinder b15512e 12.51€ Cart

Accessories

Product name Code Price
air force cover/bolts kit for malossi c/rc-one crankcase and piaggio engines 5717217 166.85€ Cart
air force cover/bolts kit/starter kit for malossi c/rc-one crankcase and piaggio engines 5717218 206.91€ Cart

Applies to

Product name Code Price
rc-one 94cc yamaha complete engine - not assembled 4917546 4110.18€ Cart

Download

mhr rc-one complete engine crankcase (for yamaha engine)

492.42
Add to cart