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- Eagle 21 R-9S NEW
- Eagle 21 R-7S NEW
- FX 21 R-03
- FX 21 R-01 FirstLine Engines
- JP 21 P-7L NEW
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- FX 21 RG-1 FirstLine Engines
- JP 21 Rally NEW
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- Eagle 12 TL-3T NEW
- FX 12 T-05
- FX 12 T-03
- FX 12 T-03T FirstLine Engines
- JP 12 P-3L NEW
The R-21 Eagle 7S is an evolution of FX 21 R-03 engine. The crankshaft is a ø14.5mm to be stiffer. Its sleeve has 7 ports and provides better performance and durability. This engine is designed for 1 / 8 On-Road. The Eagle R-7S engine has been studied to give you the best performance. Its fixed with 2 high-speed and a special main bearing.
| C. Capacity : | 3,49 cc |
|---|---|
| Bore : | 16,26 mm |
| Stroke : | 16,80 mm |
| Ports : | 7 + 2 By pass |
| Crankshaft : | ø 14,5 mm |
| Carburetor : | ø 9 mm + reducer |
| Glow Plugs : | Turbo |
| Weight : | 334 gr |
# Eagle 21 R-7S
Black Crankcase
The Eagle 21 R-7 Black version has endowed in crankcase at any point comparable to other FX Engine. The quality of crankcase has been revised for a crankshaft ø14.5mm and provide the Eagle 21 R-7 Black a very high level of performance. This Black crankcase is, as on all crankcases modified JP Racing, the label of the JP brand and its identity since 20 years.
The rear cover has been redesigned to reduce the dead volume of the bottom crankcase. The lowest volume increases crankcase depression and increases the speed of gas.
Cooling-head.
The Eagle 21 R-7S's cylinder head is endowed with 7 cooling ribs. Its shape and size are designed for optimum cooling and its getting down the center of gravity of the engine.
Under head Turbo
The under head is specific to Turbo in Eagle engine and it has been tested and researched for a longtime to end optimize compression and holding glow plug in racing. Its length important entering the sleeve allows maximum tight without deformation of the sleeve. Its large insert allows an optimal cooling with the cylinder head.
WARNING: It is very important to use only a Novarossi Glow Plug for this engine. Only this Glow Plug is perfectly adapted with this insert. The use of other brands can make the engine instable and damage the insert and the piston sleeve.
7 ports ABC Sleeve
This piston sleeve has ABC 7 ports is designed to provide optimum performance. The new arrangement allows ports to optimize performance and consumption by optimizing the gas flow. The piston is CNC machined in a highly charged alloy silicon.
The conrod is R7 type is the last generation conrod is lightened with 2 bushings.
Every piston sleeve set are fine tuned for optimum timing and better gas flow compared to Stock version. Each piston and sleeve manualluy fixed to check optimum tightening and best compression.
Turbo Crankshaft
The crankshaft of the Eagle 21 R-7S is increased to 14.5 mm is to be stiffer. The shaft is machined to increase acceleration and reduce fuel consumption. The HardBlack coating on crankshaft avoids the problems of friction and wearing. Like all the Eagle line, the crankshaft is HardBlack coated, a red putty, used for over 20 years on JP Racing engines, is placed in designed hole to improve gas flow. The diameter of the crankshaft for the same reasons.
Like the piston sleeve set, each shaft is fine tuned for optimum timing and better gas flow compared to Stock version.
WARNING: Do not put the shaft inside solvent or gasoline for cleaning.
This liquides are able to damage the red dough.
Carburetor
The 9mm carburetor has an aluminum body to receive interchangeable reducer ø8.5mm. As on all JP Engines the idle setting is limited on a single screw to adjust even easier and user friendly. This carburetor has already proved its worth and confer with this engine a great stability setting and excellent performance.
