HoBao Hyper 9 Pro in action.
10I got this buggy in 2009 and ran quite some races with it. The stock metal shielded bearings were a weak point, so i quickly replaced those with rubber shielded ones.
The Hyper 9 is very agile, almost nervous, and very light, and it handles like a dream.
It featured very small 1/10th style differentials (with a spider center differential) and small diameter brake disks, with the rear brake disk located at the rear diff housing. Despite the small size, the brakes are very agressive without fading.
The center drive shafts are made of some sort of aluminium/titanium alloy and weigh next to nothing. The rest of the driveshafts are universal joints.
The kit came with both aluminium and plastic front and rear chassis braces. These could be combined depending on driving style and/or weather/surface conditions.
The engine is tilted for optimised weight distribution. The tilted engine raised many eyebrows back then.
The servos are mounted flat on the chassis for the lowest upper deck profile possible.
Everything is mounted on an insanely narrow chassis (127mm at its widest part), and offcourse everything of the suspension is adjustable.
The only optional part was a cnc machined chassis, but i never felt the need to buy that.
Despite the positive reviews, great handling and legendary reliability, the racers were sceptical and relied on proven concepts and brands.
Two or three years later, Hobao came out with an even more robust version that wasn't as nervous as the Hyper 9; the HyperStar.
Personally, i'd definitely go with the Hyper 9 for club racing, if parts were easily available.
The buggy has been sitting on the shelf for over 12 years. The engine, a 15-year old modified NovaRossi N21B Pullstart Buggy Engine, needs a rebuild by now.
The fuel has gone bad, and thanks to European Union policies, fuel is very hard to get.
The secret to a quick starting engine is; a well tuned good carburetor, priming the engine and proper storage.
Specs:
Car: HoBao (Graupner) Hyper9 Pro (2009).
Engine: Modified NovaRossi N21B Pullstart Buggy Engine (2009) with 7mm intake restrictor.
Exhaust & header: Ansman (EFRA 2041).
JVD 4 shoe clutch and vented 14T clutchbell.
Wheels & tires: Schumacher Spirals.
Futaba brushless steering servo (BLS451).
Futaba throttle and brake servo (S3305).
Futaba FHSS 2.4 gHz radio system.
HPI R5 glowplug.
Byron 25% fuel.
Aluminium chassis braces front and rear.
Shock oil front 35WT, rear 30WT with original springs.
Diff oil front 7000WT, center 5000WT, rear 3000WT.
Titanium tierods for the steering and suspension arms.
Lightened wheelnuts with dustcaps.
Original swaybars.
Weight: 3,36 kg (ready to race, without fuel).
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