These are the new V3 SCARAB engine mounts / engine coolers (5 Feb 2014)- now standard issue on the Scarabs - now 3mm thick yet still only 7.2g ! - the bracket clamps down over the boom - works with 12/11mm booms and also 12/10mm or 12/9mm booms - Anodised red/BLACK Aircraft grade aluminium designed / made by us here at MultiCopterPilot.com for the SCARABs. Makes maximum use of the streamlined aerodynamics of the 12mm boom - both Aluminium booms and CF booms in 12mm.
4 x engine mount/coolers ; 4 x saddle clamp ; 8 M3*12mm bolts ; 8 M3*8mm bolts
The mount must be angled/tilted to vector motor thrust - we recommend 3-5° tilt
Note : use a 0.5mm spacer when installing prop collets to prevent the prop collet collar touching the engine mount/cooler - bolt the prop down - then pull away the spacer to leave a 0.5mm gap between the prop collet and this engine mount.