GL Racing GLR

Описание: Today, we are going to take a look at an older 1:28 RWD race chassis, the GLR by GL Racing. Even though the GLR came out back in 2018, it's still considered competitive and winning races against newer chassis. Today when someone recommends what chassis to build to get into superstock and faster race classes, GLR, Reflex Racing RX28, PN, or Atomic MRZ are all common suggestions.

GLR is an example of an open platform chassis compared to Kyosho's more proprietary MR-03 and MR-03EVO. It was designed from the ground up to run brushless motors with 2s lipo power, with your choice of ESC, servo, and receiver. Aluminum and carbon fiber materials are used in conjunction with plastic to create a lightweight and tunable chassis with an extra low center of gravity. The GLR can use standard Mini-Z 98mm wide bodies (or 102mm with LM parts) and RWD rims. Its performance ceiling is higher than MR-03EVO.

Before deep diving further, let me first thank Eugene for gifting me this roller GLR chassis to provide new content for this channel! He's one of the top and most knowledgeable GLR drivers out there!

In this video, the front is wearing Kyosho 20 deg radial tires from an earlier experiment, but that's too much front grip. Normally, I run PN KSM soft there. In the back, I have Marka V wide radial. All the rim offsets are +1mm and they comfortably clear the Audi R8 LMS 2015 wheel arches. The chassis plate has been upgraded to the GL brass option to lower the center of gravity as much as possible. The brass chassis makes the car easier to drive. Alternatively, MWX's GLR Pro chassis is even more aggressive.

With GLR's signature tri-damper system, the motor pod can be tuned to twist sideway softly but still center reliably. The side dampers, with some shock grease (15K-30K), dampen chatters during turns to keep the chassis planted. The rear central shock is also dampenable, and adjustable for rear droop. The amount of droop affects off-power weight distribution. In contrast, the front suspension being single wishbone and undampened, is less sophisticated. Simplicity is good for ease of tuning, but it doesn't seem to generate the same amount of traction as double wishbone setups like GLR-GT.

In terms of electronics, I'm using GL Sensored ESC paired with a sensored GL 5500kv motor. I run this at only 60% EPA since it's too fast for me. I'm going to swap in an 3500kv before the next run. The servo is the stock GL003-DMG, and the micro receiver is a Flysky GMR for Noble NB4.

The car is running the stock ball differential with a PN spur gear and shaft. The PN spur gear is equipped with a central ball bearing, and can be removed for servicing without messing with any e-clip. This is the tri-damper system that makes GLR such a potent machine straight out of the box. It allows GLR's rear wheels to maximize contact with the road. It can generate more rear traction than a standard MR-03.

Here's a Kyosho Mini-Z MR-03EVO. It's a very polished product and a really fun and easy car to play with. After flipping the kingpins on the MR-03, the front suspension becomes quite similar to the GLR. The rear uses a pancar-style motor pod too. The big difference is the use of t-plate here, vs the tri-damper on pivot ball and side links. With so many t-plates available on the market using different materials and stiffness, it's still a tunable design. However, t-plates do not allow dampening to control chatter as the chassis rolls left or right. That requires an additional damper disk setup on the top. Another key difference is that an MR-03 uses a sliding tie rod steering mechanism, vs GLR's ball links and crank. Similar to t-plates, MR-03 trades some performance headroom for simplicity. This steering design is more straightforward but less precise.

Side by side, it's clear that the GLR chassis keeps most of its mass down low. It doesn't traction roll as easily. GLR allows users to pick and choose electronics. That's a lot of flexibility but the cost can add up quickly too. I think at the end of the day, both have their places in our hobby.

I haven't been able to visit a track for a while but this was me cruising around with the GLR on somewhat bumpy carpet. There's plenty of grip, and it would change direction quickly after letting off throttle a little bit. The Marka V tires in the rear and Kyosho 30deg low profile slick in the front were plenty. There might have been a bit oversteering.

I also drove the GLR on the smooth wood floor of a yoga studio. There's not a lot of traction available but it's wide open. The car could get up to a good speed but it's pretty impossible to do any precision driving.

For people interested in going beyond Kyosho's Mini-Z, GL Racing's GLR is a good option to start. Hopefully from this video you were able to get a better feel of what a GLR build can look like for you.

This is Sammy and thanks for watching!

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