Kyosho Inferno GT2 VE - Big-Block Edition

[Dr_T]

Hi all, I'd like to share my ongoing Kyosho GT2 build here. Already burnt up the Turnigy XK 5682 - 900kv motor within running 3 batteries, so currently looking for a good replacement to fit the big-block motor mount. Hope you like it, recommendations are very welcome. I am not aiming for any speed-run records, I'm just trying to build a hassle free ~100 mph set-up that can be ran for an entire pack without having the electronics melting down.

Set-up

• Motor: vacant... ;
• "Ruggedized" Castle XL2 ESC + 4x 680 uF caps + 60x60 mm 24V fan;
• Turnigy 5.0Ah 6S and possibly 7S 60C (HD series) batteries;
• Gearing: tbd... Turinigy was geared 49/36 (pinion/spur) for no-load speed of ~162 km/h (6S) with measured 972 kv (with Castle's Torque Control motor test) at 10° timing;
• Turnigy 1258TG servo;
• Turnigy 7.5A HV UBEC;
• 500k Traxxas WT front diff; 40k cSt rear diff; center spool on KYO IG-108 2-Speed Shaft;
• 800 cSt shock fluid, stock RTR springs;
• 2° rear toe brace (KYO IF-124B);
• GRP GMY01-S5 tires, 2014 compound (figured car would be heavy enough to use S5 instead of S3);
• Parma X-citer #1222 buggy body, hoping it will reduce the typical blow-over tendency of the full GT bodies.

The Looks:


If Batman had a GT2 :)



Under the Hood:




Gearing a 900kv motor on 6S required some creativity... More info on that here: http://www.rc-monster.com/forum/showthread.php?t=32150


Traxxas Revo spur on IG108 2-Speed Shaft (use with use the IG101 100mm Center/Front Driveshaft)


First attempt at some DIY parts


Shortened Mamba XL2 with stronger heatsink clamping and bigger fan. CF bottom plate to help support the part that pushes the foamie on the brainboard.


All mounted up


Fans are 24V, wired through balance lead extension, so I can switch easily between 6S and 7S. This way also prevents the internal BEC of the XL2 from putting power on the fans when using the Castle link. Something that seems to cause potential issues: http://www.offroad-cult.org/Board/lo...40.html#289268. The UBEC is connected to the ESC battery leads, but it has a power switch, so it can be turned off when using the Castle link. With hindsight I should have just gotten a HV servo, and power it from the balance leads as well, in order to avoid the whole need of an external BEC.