Begode T4 (Original and PRO) Raven Armour Modular Fairing System

Version 1.2 (Sept 2024)

3D printed Raven Armour, a strong, modular fairing system for the Begode T4 EUC. Featuring interlocking pieces extending surface area of each side of the unit for placement of power pads and accessories.

Updates

• 24 Jan 2024. Fixed Upper Handle Alt Left STL weirdness.
• 18 Jul 2024. Added battery pack measurement and some details images. Improved description.
• 6 Sept 2024. Added PRO pieces and a new split centre insert piece for small printers. 

Features

• Modular interlocking pieces.
• Designed to encase battery packs, anchoring on the top and bottom caps (original T4).  No Velcro is needed to hold in place.
• Can be easily removed for cleaning.
• No additional screws required (existing screws are used for handle pieces).
• Upper pieces can be combined to have front only, front and rear, rear only or no handles (see config options image).
• Handles can act as a stand.
• Printable on a 180 mm bed (300mm recommended!)
• Total weight: ~2 kg (depending on materials, without Velcro and pads etc).
• Width (without handles): 308 mm, depth: 213 mm.

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Handles or no handles?

The T4's trolley handle is mostly usable, but, actually carrying the T4 is difficult and awkward due to there not being any good locations to grab the unit. 

The T4 is an off-road focused EUC, however, a lot of trails have very tight access gates and obstacles to stop larger vehicles and animals, and may have rocks or drops offs which you can't ride over. Having handles to manually manoeuvre wheels around obstacles is a great improvement. 

Handles can also help with breaking and control whist riding, or dismounting.

Will it fit my T4?

• PRO pieces should fit all T4 Pro units, as the T4's manufactoring is mature now.
• Originally modelled on batch 3 of the T4 with plastic battery cases (The first T4 batch with the spiky pedals, released around December 2022).
• There is a calibration fit-test piece which can be printed to test the dimension of your unit's battery and ensure the system will fit your unit.
  • This piece is a slice of a bottom section of the armour designed to fit the bottom of the battery packs. 
  • Print at any quality/material you desire, it should fit snug, but not tight, against the bottom of any of the battery packs.
• Designed on the battery pack height (including top and bottom caps) measuring ~304 mm. (See measurements image)

How to Print without Handles

All pieces, are symmetrical so fit either side of the wheel depending on how they're rotated.

• Download the STL files.
• Non-handle setups will require 4 STL files. Upper, Mid, Lower and Centre Insert.
• Ensure you have the pieces matching your T4 and the setup you want (PRO files have PRO written on them.)
• The pieces Upper, Mid, Lower need to be printed TWICE. Then Mirrored and printed TWICE again. Giving a total of 4 pieces each.
• The Centre Insert piece needs to be printed TWICE, one for each side  (no mirroring).

How to Print with Handles (Original T4 only)

All pieces, are symmetrical so fit either side of the wheel depending on how they're rotated.

• Download the STL files.
• Handle setup will require 5 or 6 STL files, Upper handle (and/or Upper handle alt), Mid, Lower, Centre Insert and Handle Insert.
• Ensure you have the pieces matching your T4 and the setup you want (PRO files have PRO written on them. No handles for the PRO, yet).
• The pieces Upper, Mid, Lower need to be printed TWICE. Then Mirrored and printed TWICE again. Giving a total of 4 pieces each.
• If you want the handle and alt-handle setup, each needs to be printed twice, one normal and one mirrored.
• The Centre Insert piece needs to be printed TWICE, one for each side (no mirroring).
• The Handle Insert piece needs to be printed TWICE, one for each end (no mirroring). (These should be printed in a horizontal orientation for strength.)

Print Recommendations

• 3D printer must be properly calibrated to ensure models match output dimensions.
• Minimum wall & bottom/top count of 4 at a 0.2 mm layer height.
• Handle parts Infill: Gyroid 20% (higher infill at specific weak points recommended!).
• Other parts infill minimum: Gyroid 10%.
• Handle insert should be printed in a horizontal orientation for strength.
• For safety, file, or sand any sharp edges of your prints.
• Filament Material: PolyMaker PLA+ PRO [https://us.polymaker.com/products/polylite-pla-pro]
• Upper and lower parts should have bed only supports enabled.
• It's recommend to print one full side first. 
  • The top piece, front & rear.
  • Then the centre insert (which can be used to ensure everything connects as expected, testing with the two top pieces). 
  • Then the bottom two.
  • Then the middle two.

Important Notes (README)

• Most photos are of various pre-release versions of pieces, so may not exactly match the models.
• Rear lights of the T4 need to be removed, but there is plenty of space on the fairings or handles for attaching third party lights.
• The kickstand which comes with some T4's has not been accounted for in the design.
• Velcro brand Heavy Duty 50 mm x 2.5 m Velcro recommended for attaching pads to the armour.
• For the split centre insert piece (for smaller printers), it's recommended to glue the pieces together with a small amount of superglue and ensure it dries on a flat surface. Remove any excess glue and secure the piece with strong duct tape on the flat side.
• Upon testing, handles may not survive a hard crash, but this is a good thing, as it removes stress on core components of the EUC.
• The pads in the photos are the “Kinetic pads” from <https://www.thingiverse.com/thing:5844288> printed in TPU95 scaled to 88%.
• All .STL files have been fixed via Formware.