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T-REX 450 › what scale ?
10-23-2016 04:24 PM  11 months agoPost 1
DARTHTAC

rrNovice

brooksville, fl. u.s.a.

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with the trex 450 pro and the hughes 500 series fuse, what scale would that be in. it would help to know for documentation purposes. any input ???

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10-27-2016 08:49 PM  11 months agoPost 2
ticedoff8

rrKey Veteran

Morgan Hill, CA. USA

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No idea.

But, take some key measurements for the Hughes 500 fuse and translate that to the full size.

The rotor diameter of the Trex 450 is about 675mm (I am guessing)
The rotor diameter of the Hughes 500 is 8030mm
Scale Factor = 8030 / 675
11.89:1
I would guess the 450 is about a 8% scale model of the full scale.
100% / 11.89 = 8.4

(EG: If the main rotor diameter of the model is 2000mm, that gives you a SF=4.0:1. The model would be 25% scale model)

But, that is rotor diameter.
Measure the length of the fuse's tailboom or the overall length (tip of the nose to the end of the tail) and that gives you the scale factor of the fuse (which may be different from the 450's rotor)

https://en.wikipedia.org/wiki/MD_Helicopters_MD_500
Model 500C

Data from The International Directory of Civil Aircraft[2]

General characteristics

Crew: 1–2
Capacity: 5 total
Length: 30 ft 10 in (9.4 m)
Rotor diameter: 26 ft 4 in (8.03 m)
Height: 8 ft 2 in (2.48 m)
Empty weight: 1,088 lb (493 kg)
Max. takeoff weight: 2,250 lb (1,157 kg)
Powerplant: 1 × Allison 250-C20 Turboshaft, 278 hp (207 kW)

Performance

Maximum speed: 152 knots (175 mph, 282 km/h)
Cruise speed: 125 kn (144 mph, 232 km/h)
Range: 375 mi (605 km)
Service ceiling: 16,000 ft (4,875 m)
Rate of climb: 1,700 ft/min (8.6 m/s)

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Fake News will be the downfall of our Republic!

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