heliblog

heliblog

RC Helicopter flying, RC Cars and RC boating

Made for other people and me to track what I am doing when with my remote controlled units. It started out with helicopters. Hence the name.

If only one of my units is of interest, this unit can be clicked on the right and only posts regarding that unit shows up.

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Bruiser hex extender

Tamiya BruiserPosted by xilsoe Mar 30, 2017 20:46:57
After some thinking and research I decided that 3D printed metal would be the best way to widen the track width of the front wheels on my Bruiser. So I opened openscad and designed what I call a hex extender. It is designed to match a 12mm hex and has a 5ø bore that allows a 5mm M4 barrel nut to fit in.

Before this can work, a hex conversion such as the RC4WD kit is needed. Then I used barrel nuts from a kit named: Aluminum Alloy 12mm Wheel Hub Hex Drive Adaptor +10mm Offset SCX10 WRAITH Black i bought off ebay. It might also be possible to use longer wheel axles. I didn't experiment with that

The barrel nut fit very tightly into the extender so I ended up using a needle file to enlarge one of the extender bores. Further I put some grease in the bore of both extenders to avoid binding.

The 3D print was done by i.materialise.com. They claim that the strength is the same as regular aluminium. I didn't test it though. It is available from their WEB site here: https://i.materialise.com/shop/item/hexextender-v2

Here are some pictures:

That was my first 3D printed aluminium. So far I am happy with the result :)



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