Since we were hijacking the T34 thread I moved this discussion to this thread.
That is called the "Dual Current" gearbox in the 6.x and 7.x manual. They have been around for a few years now starting with DKLM offering them as the PDSGB (Propulsion Dynamics Gear Box), but the PDSGB version went unavailable for a time. Then HL started making them. HL started making several different variants at different price points. They make a plastic case with plastic gears version, a plastic case with metal gears, and a metal case with metal gears. Of course the price goes higher with the addition of more metal in the HL pricing schema.
The one you posted is the top of the tree with metal case and metal gears hence the high price. I've seen the plastic case with metal gears for about $200 shipped and the plastic case with plastic gears are around $110 shipped. The gear box works by using the large 550 motor as the drive motor and the smaller motor controls changing direction. They are pretty quiet from what I've seen and pretty powerful. I have one going into my static to RC Trumpeter/HL T-72B1 build. I started that conversion way before HL made their version of the B1 with reactive armor.
IBU 2/3, newer Clarks (TK40, 50, 60, and 80), HL 6.x, HL 7.x, Open Panzer TCB, DK Tank from DKLM RC, Beier SFR 1D, ASP2, and ELmod will run these gearboxes. All the boards need to have a setting changed to accommodate them. In the HL board each motor has to be connected to a specific motor connection to work right, but that is shown in the HL manual for the 6/7 MFUs.
I can open mine up and show a pic of the internals when I get home.
Description from DKLM RC's website:
Dimension : Approx W=95, L=110, H=45 (mm), not count the shaft length.
Features:
1. Straight running - as moving forward and backward are driving from 1 motor, both sides of the output shaft are rotated synchronously, there will be no speed difference and it will keep the tank running straight, and will not cause by the resistance of different gearbox, and track then made the tank cannot run straight in traditional dual mixing gearbox system.
2. Good steering linearity, it will turn very smooth when driving at either low or high speed with this system.
3. Super torque - Even in complex rugged terrain still able to maintain good steering performance.
Available for some WWII and Modern tanks. Click the list to check the model available.
# Gearbox Plate directly fit for HL tank hull, shaft dimension, speed, and torque designed to refer to the tank model.
# Fit Taigen/asiatam/Torro tanks chassis too. but some sprockets need to use HL, please check with us before placing an order. :)
# Tested Supported Tank board:
* IBU2&3
* ASP2
* DK Tank
* HL TK6.0 or up
* Clark
Originally posted by Zippersnapper
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The one you posted is the top of the tree with metal case and metal gears hence the high price. I've seen the plastic case with metal gears for about $200 shipped and the plastic case with plastic gears are around $110 shipped. The gear box works by using the large 550 motor as the drive motor and the smaller motor controls changing direction. They are pretty quiet from what I've seen and pretty powerful. I have one going into my static to RC Trumpeter/HL T-72B1 build. I started that conversion way before HL made their version of the B1 with reactive armor.
Originally posted by oldwolf
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I can open mine up and show a pic of the internals when I get home.
Description from DKLM RC's website:
Dimension : Approx W=95, L=110, H=45 (mm), not count the shaft length.
Features:
1. Straight running - as moving forward and backward are driving from 1 motor, both sides of the output shaft are rotated synchronously, there will be no speed difference and it will keep the tank running straight, and will not cause by the resistance of different gearbox, and track then made the tank cannot run straight in traditional dual mixing gearbox system.
2. Good steering linearity, it will turn very smooth when driving at either low or high speed with this system.
3. Super torque - Even in complex rugged terrain still able to maintain good steering performance.
Available for some WWII and Modern tanks. Click the list to check the model available.
# Gearbox Plate directly fit for HL tank hull, shaft dimension, speed, and torque designed to refer to the tank model.
# Fit Taigen/asiatam/Torro tanks chassis too. but some sprockets need to use HL, please check with us before placing an order. :)
# Tested Supported Tank board:
* IBU2&3
* ASP2
* DK Tank
* HL TK6.0 or up
* Clark
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