Re: DRP: Derbi Reactivation Project
Posted: Thu Jun 20, 2019 8:43 pm
That RED seat is AWESOME !!
A Replica Racer forum for Derbi GPRs, Aprilia RS50s, and similar motorcycles
https://www.gprcamp.com/foro/
They also provide a PDF file of the installation guide that come with the kit.Here is our latest high engine RF70WR, DERBI 5EBS50 E2.
This high engine is adapted to be mounted with a stroke crankshaft and connecting rod length identical to the origin. However, because of its high performance, we recommend the installation of our crankshaft Racing Factory. Fully modeled in 3D CAD, cylinder sees its water chamber to tour all nuclear transfer and exhaust, with constant thickness, to guarantee high dimensional stability of the cylinder due to optimized cooling.
The cylinder head, heat treated, is also equipped with a water chamber surrounding the combustion chamber, for a good heat dissipation and good cooling. It is self-centered in the cylinder, and returns to 2.4mm in the bore of this release. Fixing the specific exhaust flange, is provided with 4 screws. However, it is possible to mount a mounting flange 2 holes, 48mm spacing.
You will find, sold as accessories, exhaust flanges of different dimensions, allowing the adaptation of practically all the pots market. These flanges are broken down in the following sizes:
Ø28mm x L30mm
Ø30mm x L30mm
Ø32mm x L30mm
Technically, this cylinder unit is composed of:
High engine RF70WR adaptable DERBI E2:
Aluminum cylinder with thermal treatment, coating nikasil Ø47.6mm
Cylinder Aluminum, with heat treatment, self-centered and returning from 2.4mm in the cylinder, high combustion chamber compression
Piston RF50WR hypersilicié Ø47.6mm
7 transfers
Escapement Boosters
New Profile 2018, elliptical, specifically, to reduce the operating clearances
25mm frame size
Chrome steel segment Ø47.6x1, lapped curved, Japanese-made
Axis Piston Ø12x39mm
of base plate gasket set of different thicknesses
Game yoke O-rings
various screws
Bidalot website wrote:Allows adapting your exhaust our high RF50WR and RF70WR engines.
Check interlocking diameter at the entrance of your exhaust, and choose the corresponding flange, depending on its outer diameter.
Available in the following dimensions:
Ø28mm x L30mm
Ø30mm x L30mm
Ø32mm x L30mm
Supplied with one gasket high temperature resistance.