Grind™ 328 LCG OD Transmission by PROCRAWLER®

Grind™ 328 LCG OD Transmission

Key Features

  1. Specially designed for straight front and portal rear axle setup
  2. Super light & super low LCG design
  3. 28% sweet spot overdrive
  4. Lightened & hardened custom chromoly gears and stainless steel shafts
  5. 2.5mm Toray® premium high-grade graphite motorplate
  6. Ultra light high-tech nylon polymer housing
  7. High-performance & durable bearings
  8. Carefully engineered gear ratios
  9. Dedicated C23 V1/V2/V2R, 6º re-angled and straight skid options
  10. All-made in Europe
Grind™ 328 LCG OD Transmission by PROCRAWLER®

Perform Like a Champion

The amazing performance of the Grind™ 328 LCG OD Transmission has been tested and proven for months by PROCRAWLER® Factory Driver Massimo “Max” Bonvini.

Max’s Featured Track Records:

  •  2019 European Scaler Extreme Champion
  • 3x Italian Scaler Extreme Champion
  • Moab Extreme Challenge Champion
  • 4x Lombardy Regional SORRCA Champion
  • 5x Piemonte Regional SORRCA Champion

Straight Front. Portal Rear.

Business in the front, party in the rear. The Grind™ 328 LCG OD Transmission was designed specially for the more and more trending straight front and portal rear axle performance setup.

Having the significant part of the RTR (Ready-To-Run) weight in the front, the straight axle keeps your COG (Center Of Gravity) as low as possible while the portal gives tons of clearance with somewhat higher COG but having less weight in rear.

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Grind™ 328 LCG OD Transmission by PROCRAWLER®
Flatgekko™ Grind 431™ LCG OD Transmission by PROCRAWLER®

28% Overdrive On Your Hand

Overdrive is one of your best friends when it comes to competition level scale rock crawling. And overdrive is maths.

We at Team PROCRAWLER® engineered the perfect overdrive rate for the  Grind™ 328 LCG OD Transmission and your straight front / portal rear setup.

Get Yours Today ➝

Lightened & Hardened Custom Chromoly Gears

After long months of research we haven’t found the proper gears for the Grind™ 328 LCG OD Transmission so we decided to design and manufacture the perfect gearing on our own.

The all-new lightened gear design and the hardened chromoly material together make the Grind™ 328 gearing super light, strong and durable while the M0.5 modulus teeth ensure ultra smooth running.

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Grind™ 328 LCG OD Transmission by PROCRAWLER®
Grind™ 328 LCG OD Transmission by PROCRAWLER®

2.5mm Toray® Premium High-Grade Graphite Motorplate

When we compiled the product features list of the Grind™ 328 LCG OD Transmission it was not a question to use the ultimate Toray® premium high-grade graphite material for the motormount plate.

Toray® premium high-grade graphite, this high-end quality carbon is ultra light but still super strong as we already experienced at the C23 V2/V2R chassis rails, all in all the perfect motorplate material.

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Ultra Light High-Tech Nylon Polymer Housing

Crafting the lightest but still powerful LCG OD transmission in its class requires careful engineering when it comes to materials.

That’s why we decided to use the super light and rock solid PA12 high-tech nylon polymer paired with the high-end SLS (Selective Laser Sintering) 3D printing technology for the housing of the Grind™ 328 LCG OD Transmission with metal inserts for long lasting threads.

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Grind™ 328 LCG OD Transmission by PROCRAWLER®
Grind™ 328 LCG OD Transmission by PROCRAWLER®

Custom Stainless Steel Shafts

Smooth running depends on several elements of a competition level LCG transmission. One of them are the properly designed and manufactured shafts.

We engineered the perfect custom stainless steel shafts for the Grind™ 328 LCG OD Transmission to support its butter smooth running on a long term basis.

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High-Performance & Durable Bearings

We have looked into and tested dozens of bearings until we found the perfect ones for the Grind™ 328 LCG OD Transmission.

The high-performance and durable oiled Grind™ 328 stainless steel bearings run smooth like a breath of fresh air but are resistant to dust and mud.

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Grind™ 328 LCG OD Transmission by PROCRAWLER®
Grind™ 328 LCG OD Transmission by PROCRAWLER®

Carefully Engineered Gear Ratios

Gear ratios must be carefully engineered fitting the purpose of use and the straight front / portal rear setup needs a special care.

We have our maths homework done and defined the gearing of the Grind™ 328 LCG OD Transmission to fit the needs of this special scale rock crawler setup.

Front Transmission Output Ratio1.95:1
Rear Transmission Output Ratio1.35:1
Find all gear ratio datas with final drive by axle types in the Tech Specs section below.

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Dedicated C23 V1/V2/V2R, 6º Re-Angled & Straight Skid Options

The Grind™ 328 LCG OD Transmission is a seamless fit for the C23 V2R LCG Chassis System for sure but was designed to also fit any chassis rails no matter if having angled or straight skid line.

That’s why the Grind 328™ is available with C23 V2R, 6º re-angled and straight skid options. Feel free to take your choice!

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Grind™ 328 LCG OD Transmission by PROCRAWLER®
Flatgekko™ Grind 431™ LCG OD Transmission by PROCRAWLER®

Made In Europe

The Grind™ 328 LCG OD Transmission is designed in-house by the engineering artists of Team PROCRAWLER® in Hungary/Europe.

High-quality production is processed on state-of-the-art Hungarian and Italian 3D printers and CNC machines so the Grind 328™ is crafted of the finest that the EU has.

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Tech Specs

Grind™ 328 Dimensions
Length: 18mm
Width: 80mm
Housing height /wo insert hub: 31mm
Motorplate height: 35mm
Bearings size: 5x10x4mm flanged
Shaft diameter: 5mm
Grind™ 328 Weight
Net weight: 54g
Net weight /w skid: 85g

Grind 328™ Overdrive
28% Front Overdrive

Grind™ 328 Front Transmission Output Ratio
1.95:1

Grind™ 328 Rear Transmission Output Ratio
1.35:1

Grind™ 328 Front Transmission Output Ratio /w Final Drive
12.13:1 /w 9T/56T Pinion/Spur

Grind™ 328 Rear Transmission Output Ratio /w Final Drive
8.40:1 /w 9T/56T Pinion/Spur

Grind™ 328 Front Drive Ratio
45.50:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & AR45P/F10/Capra Rear Axles Or Clone
45.50:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & TRX-4 Rear Axles Or Clone

Grind™ 328 Rear Drive Ratio
60.38:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & AR45P/F10/Capra Rear Axles Or Clone
59.72:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & TRX-4 Rear Axles Or Clone

Grind™ 328 Materials
PA12 housing 3D printed by SLS (Selective Laser Sintering)
2.5mm Toray® premium high-grade graphite motorplate
Hardened chromoly gears
Stainless steel shafts
Stainless steel oiled bearings
Stainless steel hardware

Grind™ 328

The ultimate LCG OD transmission for your straight front and portal rear scale rock crawler setup.

PROCRAWLER® Grind™ 328 LCG OD Transmission

169.95Select options

Frequently Asked Questions

What is an LCG OD transmission?

To understand the essence of an LCG OD transmission for scale rock crawling first we have to define what LCG and OD are.

What is LCG?

The LCG stands for “low center gravity”. This is a build style, a way of thinking in the scale rock crawler scene. The key focus in LCG is on getting the center of gravity as low as possible which makes your rig more capable when it comes to climbing upwards, sidehilling or downwards.

Based on these the optimal LCG transmission is as light and as low as possible. Recent stage the Grind™ 431 LCG OD Transmission and the Grind™ 328 LCG OD Transmission are the lightest and lowest LCG transmissions in their class.

What is OD?

The OD stands for “overdrive”. Overdrive is a solution to drive one of the axles faster than the other. In scale rock crawling the basic goal is having the proper front overdrive which means that the front wheels are rotating faster than the rear ones.

Overdrive is one of your best friends when it comes to competition level scale rock crawling. And overdrive is maths.

We at Team PROCRAWLER® engineered the perfect overdrive rate for the  Grind™ 328 LCG OD Transmission and your straight front / portal rear setup.

GET YOURS NOW!

Grind™ 328 LCG OD Transmission ➝

What is straight front and portal rear setup about?

Business in the front, party in the rear. The Grind™ 328 LCG OD Transmission was designed specially for the more and more trending straight front and portal rear axle performance setup.

Having the significant part of the RTR (Ready-To-Run) weight in the front, the straight axle keeps your COG (Center Of Gravity) as low as possible while the portal gives tons of clearance with somewhat higher COG but having less weight in rear.

GET YOURS NOW!

Grind™ 328 LCG OD Transmission ➝

Why are weight and height so important?

If you want to keep the COG (center of gravity) of your scale crawler rig as low as possible it is critical how much weight you add above the chassis rail lines.

As center positioned transmissions are mounted on the skid of your rig, it is very important to have it as light and as low as possible to minimize the weight above the chassis rails.

Recent stage the Grind™ 328 LCG OD Transmission is the lightest and lowest LCG transmission in its class.

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Grind™ 328 LCG OD Transmission ➝

What chassis rails is the Grind™ 328 compatible with?

We designed and engineered the Grind™ 328 LCG OD Transmission to be compatible with all major performance chassis rails available on the market. As it comes with its dedicated skid the only requirement is having the market standard skid mounting hole pattern on your rails.

Of course, the most seamless fit is the geometry of the Flatgekko™ C23 V2R LCG Crawler Chassis System. If high-performance is a key focus for you, this pro level pairing will be a blast for you and your scale rock crawling experience.

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Grind™ 328 LCG OD Transmission ➝
Flatgekko™ C23 V2R LCG Chassis Kits ➝

What axles to choose for the Grind™ 328?

We designed and engineered the Grind™ 328 LCG OD Transmission to be compatible with all major capable straight and portal axles available on the market:

  • AR44 axles and their clones
  • AR45 straight axles and their clones
  • Enduro axles and their clones
  • AR45P portal axles and their clones
  • Capra portal axles and their clones
  • F10 Phoenix portal axles and their clones
  • TRX-4 portal axles and their clones

IMPORTANT!

The different axles may require different motor gearing (pinion and spur gears) to get the proper performance on the rocks. You can find detailed informations about motor gearing and recommended pinion/spur pairings in the What size pinion and spur to use for the Grind™ 328? section.

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Grind™ 328 LCG OD Transmission ➝

What size pinion and spur to use for the Grind™ 328?

The different axles may require different motor gearing (pinion and spur gears) to get the proper performance on the rocks.

We recommended the 9T pinion / 56T spur motor gear pairing for all major capable axles available on the market below.

IMPORTANT!

As all scale crawler setups differ, these are only recommendations which doesn’t mean that you can’t follow your own ideas and experience. You want to test out the best setup for you and your driving style.

Grind™ 328 Front Drive Ratio
45.50:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & AR45P/F10/Capra Rear Axles Or Clone
45.50:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & TRX-4 Rear Axles Or Clone

Grind™ 328 Rear Drive Ratio
60.38:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & AR45P/F10/Capra Rear Axles Or Clone
59.72:1 /w 9T/56T Pinion/Spur + AR44/AR45/Enduro Front & TRX-4 Rear Axles Or Clone

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Grind™ 328 LCG OD Transmission ➝

Which skid option to choose for the Grind™ 328?

You can pick your Grind™ 328 LCG OD Transmission with 3 skid options.

C23 V1/V2/V2R Skid

This is basically the dedicated skid for the Flatgekko™ C23 V2R LCG Crawler Chassis System chassis kits. This option is your choice if you plan to place the Grind™ 328 transmission on a C23 V1/V2/V2R platform.

6º Re-Angled Skid

The 6º Re-Angled Skid can be used for any chassis rails that has the market standard skid mounting hole pattern and an angled skid line. The final positioning of the Grind 328™ transmission will be horizontal if the skid angle is 6º.

Straight Skid

The Straight Skid is your choice if you plan to use the Grind 328™ with a straight skid chassis.

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Grind™ 328 LCG OD Transmission ➝
Flatgekko™ C23 V2R LCG Chassis Kits ➝

What is included in the box?

We designed the Grind™ 328 LCG OD Transmission as a plug’n play product. That’s why we ship them fully assembled, waterproof greased with G2 Waterproof Premium Graphite Silicone Grease, mounted on the skid and placed on a foam insert in its badass black laser engraved box.

IMPORTANT!

At recent stage motor gears like pinion and spur are not included.

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Grind™ 328 LCG OD Transmission ➝