Hello again from the Perth RC drift scene, today I’m bringing you a review of the Boom Racing 007-BRV2 High Stability Aluminium Gyro.
Boom Racing is a brand that few of you may have heard of before. It’s the in-house brand of Ausdrift sponsor AsiaTees Hobbies and includes over 2700 lines over a very wide selection of chassis including; crawlers, buggies, touring car and drift cars. For this review AsiaTees kindly provided one of their very nice 007-BRV2 high stability aluminium gyros for testing. At the time of writing the 007-BRV2 was available from AsiaTees for $45.08 AUD with free postage from Hong Kong (On orders over $100 AUD).
While some regard fitting a gyro to any kind of RC car as cheating, in the case of RWD drift it’s essential to overcoming the difficulties that working at small scale present. In a full size drift car the rotational inertia of the front wheels and tyres creates a natural gyroscopic effect (remember those high school science lessons) allowing the driver to release the steering wheel and let the tyres steer themselves. Due to the relatively low mass of RC drift wheels and tyres and relatively high holding torque of the steering servos used, this simply does not happen at a 1:10 scale. A gyro when correctly set adds a simulated effect of exactly what happens on a 1:1 car.
The Boom Racing 007-BRV2 gyro is available in 6 colours; black, blue, red, pink, green and gold. For this review AsiaTees supplied the gold version as shown above. The attractive aluminium cased gyro is supplied with a very nice mounting tray and all required fasteners. Spare mounting trays can be purchased separately to allow the gyro to be easily moved between models. Gyro gain can be adjusted either digitally with CH3 or manually by turning the gain pot. For manual mode a handy gain adjustment driver is also supplied which saves hunting around in your toolbox for a suitable driver. There are 2 dip switches on the gyro for setting digital or analogue mode and for gyro direction.
The Boom Racing 007-BRV2 gyro was fitted to 2 different cars for this review, to Jayden Goncalves’ brand new RWD dedicated Yokomo YD-2 Plus and to my RWD converted Alex Racing Design CER-D08 premium. Fitting and connecting the gyro is very easy with 3 short leads for connecting the gyro to your steering servo and receiver CH1 & CH3. The supplied instructions are light on for detail but very easy to follow. For testing purposes I simply mounted the gyro to my chassis with double sided tape rather than using the aluminium mounting tray, Jayden did much the same on his YD-2 Plus.
For me, the overall driving impression with the Boom Racing 007-BRV2 was a big improvement over the MST LSD 2.0 RS gyro it replaced. The MST gyro retails for between $80-90 AUD whereas the 007-BRV2 has much the same functionality at roughly half the price. I noticed on startup that the 007-BRV2 has a different centre frequency to the MST gyro, but once trimmed it maintained that centre setting perfectly throughout the run and on subsequent starts. When digitally set with CH3 of my Futaba 3PM radio to 50% gain, I felt that the 007-BRV2 displayed much smoother action and reduced twitchiness from my OMG D2-LP-CF07s servo compared to the previous MST unit at the same gain setting. For me this resulted in a much more “connected” feel to the steering and far greater predictability and confidence, both of which allowed me to drive a much smoother line with great control while still getting heaps of angle and countersteer.
Jayden’s impression of the Boom Racing 007-BRV2 was somewhat less positive than mine. Jayden fitted it to his brand new Yokomo YD-2 Plus for it’s maiden runs. He also commented that the 007-BR centred perfectly once trimmed but that on his car it suffered from gyro wobble (caused when the gyro over-corrects at low steering angles and the front wheels wobble). He also found it difficult to find the sweet spot for the gain, he ended up settling on ~40% in order to minimise the wobble from his Futaba S9570SV servo. After his review Jayden fitted a Futaba GY430 gyro, which he found to be smoother for his combination after some tuning. The Futaba gyro retails for $80-90 and also has similar functionality to the 007-BRV2.
In all, the Boom Racing 007-BRV2 high stability aluminium gyro is a very capable gyro, well suited to RWD drift at half the price of the better known brands. In addition the very easy mounting, beautiful appearance and wide colour choice will suit just about any chassis scheme. Give Boom Racing by AsiaTees a try when next looking for great value, high quality hop-ups for your RC chassis.