HP 49VT Nitro engine

Description

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Description
This is a new engine HP 49
However this is not the correct box.
It does include carb, pipe , washer  and muffler
and is very clean
Below is info we found online .
Hirtenberger has quite a history. Located in the town of Hirtenberg south of Vienna, Austria, HP's primary business as an ammunition factory dates back to 1860. The word Patrone in their name means cartridge. Initially, HP produced hand made hunting cartridges but steadily expanded to manufacture a full range of ammunition. At its peak, during the Austro-Hungarian monarchy, the factory employed over 4000 workers. By 1937, one million cartridges per day were being manufactured to supply the axis powers. However, following World War II and the postwar occupation period, the factory was left an empty ruin until 1955. Production recommenced during 1957 under the guidance of the former president, Fritz Mandl. With his interest, the model engine department was started in the early 1960's to develop a twin cylinder military drone engine. Then development of a .15 and .61 engine for the consumer market followed. Only the . 61 went into full production. The first model of the .61 had a bell type rear rotary valve and Schnuerle porting design, both were unheard features of in the 1960's. Soon the .61 evolved into a front intake version which proved to be more suitable for conventional model airplanes. With the success of the .61, the HP .40 soon followed and gained a wide following which its descendant today still carries. Throughout the 1970's a full line of engines soon to be known as the most advanced and highest quality were in full production. In the early 1980's the Austrian government took ownership of the munitions factory. During this time development began on a series of 4 stroke engines with a unique rotary valve design. These proved to be the quietest and most fuel efficient engines ever produced. During the late 1980's the engine production was neglected as it was such a small portion of Hp's business. In 1990, after years of negotiation, RJL was able to purchase the model engine department from Hirtenberger and move the engine production to Southern California. Hirtenberger AG, Austria is still in the business of manufacturing ammunition and munitions and is no longer affiliated with the model engine production. The HP engine line, name and HP logo were obtained in 1990 from Hirtenberger AG, Austria.
VT .49
SPECIFICATIONS
Displacement
.49 cu.in (8ccm)
Bore x Stroke
0.898 x 0.772
Power
.75 hp
RPM Range
2500 ~ 13,000
Weight
17.3 oz
Prop Size
10x6 11x5 12x4
Prop Nut Thread
1/4" x28
VT .49
SPECIFICATIONS
Piston/Cyl Type
Conventional Ringed ABC
Crankshaft
Hardened supported by two ball bearings
Valve Type
Hard Chrome Rotary in bronze sleeve
Valve Train Drive
Bevel and spur gear via shaft
Carburetor Type
Twin Needle
Glow Plug
K&B 1L 7311 Std Long
See note a bottom of page about glow plugs in VT engines
ULTRA QUIET!
HP's unique design of four strokes are the quietest made. In fact, the VT 21 rivals an electric. Both engines are equipped with suburb mufflers that easily meet all DB requirements.
EXACTING TOLERANCES!
HP engines have always been renowned for their unsurpassed quality and precision. This tradition continues as all HP four cycles are produced with the latest computer controlled machines in our Southern California facility.
SUPER SMOOTH
!
HP has always been known as the smooth runners. The one piece hardened steel crankshaft with a massive counter weight is supported by 2 ball bearings. A light alloy forged conrod and cast piston are balanced perfectly. You'll be surprised just how smooth a engine can be.
OVERHEAD BBC rotary valve technology
Bronze, Brass, Chrome. HP pioneered rotary valves in model engines and utilize a true hard chrome valve running in a bronze sleeve. This arrangement never requires adjustment. No valve float and or power robbing valve spring tension to overcome.
Optional roller bearing supported valve
Rather than the standard bushing, you can purchase the bearing head version to take the upward force of the valve during combustion. Both engines provide the same power, however the bearing head is less critical on the oil scavenging from the exhaust.
Precision Crankshaft
Produced from solid bar stock with large counterbalance and then fully heat treated, these crankshafts are then precision ground to a tolerance of .0001 of an inch. This is why HP engines are known as the smoothest runners.
ABC ringed piston & cylinder assembly
A high silicon piston fitted with ring runs in a hard chrome plated brass sleeve precision ground to .0001 of an inch on both the inside and outside diameters.
Forged & bushed connecting rods
Each VT connecting rod is forged from high strength aircraft grade aluminum alloy then precision machined and fitted with bronze bushings at both ends
High pressure castings
All HP engines are pressure die cast from aluminum alloys. These castings are made by forcing molten aluminum into high strength tool steel dies at pressures as high as 3000 psi.
Ball Bearings
All VT's are equipped with double ball bearings on the crankshaft. The front is sealed on both sides eliminating blow by and rusting that is common in four cycle engines.
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Shipping Info
Packed Well
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Insured