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Product Detail |
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O.S. 12TZ (P)-T w/11H Slide Carb OSMG1997
This is the O.S. Max 12TZ ABC Pilot Crankshaft Turbo Engine for 1/10 scale racing. Meets IFMAR and ROAR 3-port specifications.
*** Due to the High Performance of the TZ Series Engines *** *** OS does NOT provide a warranty with this engine ***
Features
Natural aluminum construction
Nine fin blue aluminum cooling head
Two-piece turbo cylinder head with 29mm innner and 49mm outer head that adds extra area for more efficient cooling
Slide Carb 11H - 3 needle slide valve carburetor OSMG2473 with ROAR legal 5.5mm carb restrictor
Rear Exhaust
ABC construction, Aluminum piston and Brass liner that is Chrome plated
High tensile A7075 "knife edge" aluminum connecting rod double bushed for friction-free operation
Offers enormous torque from low RPM
Specifications
Bore: 0.54" (13.8mm)
Stroke: 0.55" (14.0mm)
Displacement: 2.11cc
Practical RPM Range: 5000-40,000 rpm
Power Output: 1.5hp @ 33,500rpm
Weight: 7.92oz (225g)
Distance between mounting holes same side: 0.43" (11mm)
Distance between mounting holes opposite side: 1.2" (31.4mm)
Width not including mounting flanges: 1" (25.4mm)
Width including mounting flanges: 1.5" (39mm)
Height bottom of crankcase to top of cylinder head: 3.5" (89.6mm)
Height bottom of mounting flanges to top cylinder head: 3" (77.2mm)
Height crankshaft center to top of cylinder head: 3" (77.2mm)
Length from front of crankcase to end of crankshaft: 1.2" (29.5mm)
Length center line of piston to front of crankcase: 1.4" (34.8mm)
Length center line of piston to front of crankshaft: 2.5" (64.3mm)
Length from backplate to end of crankshaft: 3.1" (79.4mm)
Length from backplate to front of crankcase: 1.9" (49.9mm)
Crankshaft threads: 1/4-28
Package Contents
One O.S. Max 12TZ ABC Pilot Shaft Turbo Engine with P6 Glow Plug (OSMG2696) 11H Slide Valve Carb OSMG2473, & instruction manual One Exhaust Seal OSMG8871
Requirements
Fuel: 10%-30% nitro (recommend starting w/20% changing to a higher nitro content if necessary) w/18% lubricant Air Cleaner DTXG2612
Comments
Some notes on slide valve and rotary carburetors:
Rotary carbs offer a larger response in the middle of the power band. This works well for off-road applications when throttle response must be varied.
Slide Valve carbs provide greater response at the beginning and end of the power band. This works well for on-road and racing applications for fast take-offs and high speed.
Many high-performance engines have short lives, as racers constantly strive to "lean them out" for greater performance. Unfortunately, it also makes engines run hotter, which reduces their lives.
Needle Settings: Needle Valve (aka High Speed Needle):1¾ open from closed position per page 18 of manual.
Mixture Control Screw (aka Low Speed Needle):The head of the mixture control screw is flush with the carb body per page 25 of manual.
Metering Needle: Head of metering needle screw is flush with the ball link body per page 25 of manual.
Throttle Stop Screw: This is set so the rotor is still 0.5mm open when closed per page 18 of manual.
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