https://www.youtube.com/watch?v=L6SaqBasrfg
This is Soviet experimental offroad vehicle model has a 1/20 scale and based on WPL components. I made axles on leaf springs instead independent suspension because it was easy way. There are 2 speed gearbox, two DIY transfer gearboxes and a lot driveshafts.
3D model was converted from Spintires mod and edited in Sketchup.
Partlist:
* [WPL 2 speed gearbox](https://www.banggood.com/Transmission-Drive-Shaft-6x6-For-WPL-B14-B24-B16-B36-JJRC-Q60-RC-Car-Parts-Silver-p-1535880.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601173)
* [Middle axle](https://www.banggood.com/WPL-B16-B36-1-or-16-2_4G-6WD-Rc-Car-Upgrade-Spare-Parts-Middle-Bridge-Axle-W-or-Metal-Gear--p-1406981.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601181)
* [Steering axle](https://www.banggood.com/Plastic-Front-Bridge-Axle-For-1-or-16-Feiyue-FY001-FY002-WPL-B14-B24-C14-C24-RC-Car-p-1439683.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601183) 2 pcs
* [Driveshafts](https://www.banggood.com/Transmission-Drive-Shaft-For-WPL-B1-B16-B24-B36-C1-C24-C34-JJRC-Q60-Q61-Q65-MN-90-RC-Car-Parts-Gold-p-1530112.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601187)
* [Driveshafts+short](https://www.banggood.com/Transmission-Drive-Shaft-6x6-For-WPL-B14-B24-B16-B36-JJRC-Q60-RC-Car-Parts-Silver-p-1535880.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601190)
* [MG90S Metal servo](https://www.banggood.com/MG90S-Metal-Gear-RC-Micro-Servo-13_4g-for-ZOHD-Volantex-Airplane-RC-Helicopter-Car-Boat-Model-p-74870.html?rmmds=search&cur_warehouse=CN&p=J7171269288462016106&custlinkid=1330920) 2pcs
* [Leaf springs](https://www.banggood.com/WPL-B-1-Damping-Metal-Sheet-4PCS-116-Military-Truck-RC-Crawler-Car-Parts-p-1227739.html?cur_warehouse=CN&rmmds=search&p=J7171269288462016106&custlinkid=1601191)
* [623 bearings](https://www.banggood.com/TWO-TREES-10Pcs-Full-Metal-Flange-Ball-Bearing-608-or-623-or-624-or-625-or-626-or-688zz-Deep-Flanged-Pulley-Wheel-for-3D-Printer-p-1679183.html?rmmds=search&ID=510170&cur_warehouse=CN&p=J7171269288462016106&custlinkid=1330913)
* Radiocontrol as you wish
Front and rear axles has a steer and damped by leafs. Short driveshaft connect main gearbox with rear tranferbox. Between tranferboxes I puted DIY extended driveshaft. You can use universal joints ([like this](https://www.banggood.com/Metal-Universal-Joint-For-RC-Cars-Boats-p-87379.html?rmmds=detail-topright-recommendation&cur_warehouse=CN&ID=49366&p=J7171269288462016106) ) with a long steel rod between. Transerboxes has 2:1 reduction and connected to axles through driveshafts. A middle axle transfered power from both transferboxes for less stress. These driveshafts must be shortened as example photo because its not fitted.
Transferboxes assembled with plastic gears, custom shafts and a lot 623 bearings. Shafts made on the lathe and flatenned by file.
Notice: rear transferbox has 2 small gears and 1 big, front - 1 small, 1 big. Also need to check shafts rotate directions before installing axles.
Optional, I add [3d printed winch](https://www.thingiverse.com/thing:3134362) but made it smaller to fit into chassis.