INTRODUCTORY PRICE VALID FOR A FEW DAYS FOR THE FIRST 50 ORDERS!!!
The brand new crankshaft with its mass diameter Ø73.5mm for more inertia and unbeatable torque!!!
!WARNING! This crankshaft is to be installed ONLY with the MALOSSI casings that you will have machined beforehand (these are casings which have enough material to fit such a vilo).
This RRD RACING COMPETITION crankshaft is a long stroke and long connecting rod model, the only long connecting rod / long stroke electronic cone to be released for Peugeot 103 SPX, MVX, RC X and CLIP...
The stroke represents the stroke of the piston, if we offset the crank pin by 1.5mm this offers 3mm of additional stroke, as an example:
Kit Ø46mm in stroke 39.1mm (original) = 64.98cc real Kit Ø46mm in stroke 42.1mm RRD (this crankshaft) = 69.96cc real
Kit PARMAKIT Ø50mm in stroke 39.1mm (origin) = 76.77cc real
Kit PARMAKIT Ø50mm in stroke 42.1mm RRD (this crankshaft) = 82.66cc real
This crankshaft therefore offers additional cubic centimeters of displacement, a huge torque gain, all while bringing you closer to the so-called "square" engine with your big kits! This model is intended for large kits. The connecting rod has been lengthened by 9mm, so it is an 85mm connecting rod that we have placed on this crankshaft in order to improve the engine movement, to reduce the forcing on the piston, to avoid the problem of striking the BDC, ...
This crankshaft is cut from the best special hardened steels and has undergone 3 treatments, case hardening. This very high quality crankshaft has been fully studied, designed and tested in our workshops. It is made of high-end materials in Europe.
This crankshaft offers many advantages:
-Race increased to 42.1mm instead of 39.1mm, which offers an increase in displacement, the race also makes it possible to approach the square race again (46X42.1) and to have better behavior motor in relation to a 39.1 race base.
- Specific crankshaft balancing for the average piston weights of large kits, calculated on an average MALOSSI / POLINI / AIRSAL ...
- Ultra-reinforced connecting rod placed on a 16mm diameter crankpin, ultra-reinforced foot and head cage, improved head lubrication. Length pushed to 85mm (+9mm) to improve engine movement, have a PMB farther from the masses, less forcing on the piston, more free revs.
- On some crankcases, it may be necessary to lightly mill or apply a DREMEL-type abrasive roller to pass the connecting rod small end. You need a distance of 0.5mm between the crankcase and the big end as a precaution.
-Price pulled down for small limited quantities, with very high quality of materials and workmanship!
- Cage of connecting rod feet in 12X16X16mm The increase in stroke of 3mm as well as the increase in connecting rod +9mm will require you to use a base wedge of around 10mm), we sell 1.0mm wedges with a shape original type base, to be aligned with your engine transfers.
-Mass diameter of Ø73.5mm without chamfer for maximum engine inertia, solidity and good behavior!
Then, play with your base gaskets to get the desired compression ratio (also to be defined according to your diagrams). The PMB piston drops an additional 1.5mm, ideally you will align your lights at the PMB. Attention, do not use this crankshaft with a kit already prepared with very large diagrams on a normal stroke, the diagrams would end up much too high... We recommend at most, diagrams of 196 / 133.
Be careful, check that the piston closes the exhaust port by at least 0.5mm at top dead center (TDC). On some kits, the plunger may not close the light. It will not fit on a long run!
Originally, the ignition of the electronic 103 is set at 0.9mm before TDC. You can put 1.1mm to 1.2mm ahead of this long race (on a normal race, you can go up to 1.3 to 1.4mm before TDC). *With this crankshaft and the 10mm wedge, plan a set of M7 X 125mm studs!
