Sometimes I can review cars because I own one, sometimes borrow one, so far nobody is giving me any to review, but sometimes other review cars for me which is the case here. In this instance, a new reviewer in the form of Team Yokomo driver Chris Sturdy who has just recently built his new YZ-2. So we asked Chris to give us his thoughts on his new ride and this is what he had to say!
Like all Yokomo kits the bags are all marked in number order allowing for easy identification of each bag and what order they need to be opened in. From the new bell crank and steering assembly to the all new rear suspension mounts the quality was top notch. I had no issues with the build, screws went into the plastic nice and smoothly without the need for excessive force while tightening.
Some new features. Yokomo has redesigned their steering system and is a big step up from previous buggies. The new system now includes 8 bearings instead of 4 like the Bmax2 allowing for a super free motion with the bell cranks. The new C-Hub design allows for a screw and kingpin instead of a suspension shaft this alloys for a very low friction steering system that feels great on track. The new C-Hub design also includes changeable inserts to change Caster angles, In corporation with either the 25 degrees or 30 degrees suspension mounts the inserts now alloy for a maximum of 35 Degrees caster and a minimum of 20. The biggest addition to the YZ-2 is the new Low-Profile forward Gearbox, The gearbox includes the top shaft, 2 idler gears and the differential. this kit include the Alloy top shaft as standard alloying for less weight in the gearbox giving faster acceleration and a lower enter of gravity. The idler gears are plastic but are a much bulkier design so durability isn’t an issue allowing for lighter idler gears instead of the alloy ones most people used on the Bmax2.
The gearbox is now mounted on 3 rubber sheets which alloy for a floating gearbox which aids in forward traction.
The new Rear suspension mounts incorporate the 4wd design using plastic inserts for easy adjustment of toe and anti-squat, the Shims that can either be placed under or on top of the RR block and RF block allow for a better adjustment of the roll centre by raising or lowering the suspension arms.
Some things to note, whenever I build a car, any screw that is being installed into Alloy parts I always add a dab of locktite to the screw. this will almost guarantee that the screw will not come loose while on track.
When installing the differential into the gearbox housing always check for any excessive left to right play and use very fine shims to adjust, In this kit I added a 0.1 shim on both the left and right outdrives inside the gearbox case.
Here is a list of all the running gear I installed aswell as all the option parts I installed on the buggy.
Motor: Fantom Ion5 8.5T Team Edition Motor
ESC: Hobbywing V3.1 running in Mode 8
Battery: Fantom Short 4600
Servo: ProAmps Prototype (Released soon)
Radio: Futaba 4PKS-R with Fasst BTA Receiver
Tires: Slicks ( works best at GCRC Raceway)
Bearings: Plaig Bearings YZ-2 Kit (available shortly)
Option parts include: Alloy rear Hubs 0Deg, Full Titanium Screw Kit, Full Ti Turn-buckle set 52mm, Alloy front and rear Shock Caps, Machined pistons, Ball Diff
All together the car weighed in at a feather weight of 1550g with added weight included.
The first run
Before the first run I was sceptical, but once I did a lap there was no doubt, this buggy was FAST, within the first 15 Laps I matched my best lap from the Bmax2MR the week before and only got better from there. I played around with camber links, camber, springs but didn’t change too much from first run and got used to the buggy. Compared to the Bmax2MR which I also ran on track during the day, The YZ-2 feels more nimble, Smoother cornering and turns more precise and aggressive without the rear end snapping through corner. The buggy jumps a lot flatter allowing for easy adjustment of throttle and steering through the air allowing for much more precise and smoother landings. Despite the more forward motor position the buggy still had tremendous forward grip and was wheel standing at some points. By the end of the night i posted my fastest 2wd lap, We are only starting to scratch the surface with the setup now and I look forward to testing the buggy more and more in the coming weeks.
Here are some photos of the build and a video of a few laps at GCRC Raceway.
I would like to thank Team Yokomo for the support and the All new YZ-2, a weapon straight out of the box!
Yokomo, Fantom Racing, Hobbywing, Jconcpets, ProAmps Servos, Plaig Bearings, Wild Turbo Fan, StickIt1Racing, BittyDesign Australia, S2H Bodies, GCRC Raceway