| Displacement(c.c. / cu.in.) | 14.96 c.c. / .913 cu.in. |
|---|---|
| Bore(mm / in.) | 28.0 mm / 1.102 in. |
| Stroke(mm / in.) | 24.3 mm / 0.957 in. |
| Practical R.P.M.(R.P.M.) | 2,000 ~ 16,000 rpm |
| Output(BHP/RPM) | 2.75 BHP / 15,000 RPM |
| Weight(g/oz) | 562.2 g / 19.83 oz |
1) PRO-91 engine x 1 EA
2) Carburetor assembly x 1 EA
3) REDLINE R2 glow plug x 1 EA
4) Allen wrench x 3 EA (1.5mm , 2.5mm & 3mm)
5) Instructional manual x 1 EA
6) TT logo sticker x 1 EA
The PRO engine series feature aerospace-technology ball bearings for supporting the crankshaft at high RPM while the Schnuerle-boost combustion porting delivers greater power and fuel economy. The Pro Series engines are equipped with twin ball bearings, twin needles and ASN-type piston and cylinder for years of trouble-free performance.
All Pro Series engines deliver exceptional power-to-weight ratio and value, making them fantastic 2-stroke powerplants for model airplanes.
The latest Pro-91 is a ringed-type engine equipped with a massive forged aluminum connecting rod and dual bushings. Its unique "squared" cylinder head design allows for cooler runs. Note that the pro-91 requires a muffler sold separately, either conventional type (No. 9225N) or Rare Bear custom-made muffler (No. 9791).
1) Side exhaust
2) Hypereutectic machined Al-Si ringed piston
3) High strength connecting rod with bushings pre-installed
4) Nichel-plated cylinder liner with special criss-cross pattern etched
5) One-piece crankcase with squared-off shape cooling fins
6) Dual ball bearing-supported crankshaft
7) Vertical fins heat sink head for optimum air cooling
8) 2 Needle valves carburetor
9) Swept-back needle valve for added safety adjustment
10) State-of-the art CNC machined components
11) Redline R2 glow plug included
