Kyosho Inferno GT (Brushless Conversion – Part 1)

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This is my first attempt to convert the Kyosho Inferno GT from a big block .28 nitro engine to a electric brushless system. Since everyone is going ‘green’ I thought I should too…..Just kidding! I and going electric because of the speed and power.

Unlike my previous brushless conversions I actually purchase most of the main components, instead of fabricating my own.

Here is a list of parts I needed:

  • Brushless Conversion Center Diff Motor Mount Set (brand new from ebay – $34)
  • RC-Monster 2 Speed 1st Gear – 16T (rc-monster.com – $12)
  • RC-Monster 2 speed 2nd gear – 22T (rc-monster.com – $12)
  • 2 Speed Pinion adapter 5mm bore (rc-monster.com – $12)
  • RC-Monster Double servo and RX tray (rc-monster.com – $18.99)
  • Castle Creation Mamba Monster ESC and 2200KV motor (Used on ebay- $200)
  • Kyosho Inferno GT2 2-Speed Spur Gear Set ( 46T/40T) (NIB ebay – $6.67)
  • Hitec HS-645MG – brake servo (Used on ebay – $15)
  • Hitec HS-7955TG – steering servo (Used on ebay – $35)
  • Spektrum SR3001 Pro Receiver (Used on ebay – $41)
  • Checkpoint 5400mah 7.4v lipo (Used on ebay – $19)
  • Checkpoint 5400mah 7.4v lipo (Used on ebay – $19)
Here is a view from the top of the newly converted Inferno GT.

Kyosho Inferno GT - Brushless Conversion

Take a look at the Brushless Conversion Center Diff Motor Mount Set that I bought from ebay. Most conversion kit only come with the CNC machined mount that the brushless motor is attached to. But the set I got from ebay come with the whole diff case that is CNC aluminum.

Kyosho Inferno GT Brushless Motor Mount

Even the motor mount from RC_Monster only comes with one end of the center diff case, like the pictures below. That is why I went with the one from ebay instead.

RC-Monster Motor mount for Kyosho Inferno GT

If you compare the picture from above (RC-Monster motor mount) and the picture below (ebay motor mount) they both look similar.
The picture below also gives a close up look at the RC-Monster 2 speed Pinion gears and adaptor. Unfortunately the gears were not perfect, meaning I had to do some sanding and re threading of the smaller pinion gear. When I got the gear the inner threads on the pinion gear was not threaded all the way to the end, so I was not able to screw the pinion gear on to the adapter.  The only way I could screw it on is backwards. If you take a look at the smaller pinion you can see that there is a lip on one side of the gear, that mean there is only one way you can mount the gear. If you screw it on the other way the 2 gears with be right next each other and not have the gap you see now. So, I took a little file and tapered off the edge where the tread was not finished. Since I do not have a tap that is the right size, I had to use the pinion adapter as a make shift tap by screwing and unscrewing the pinion on the adapter until I was able to screw it all the way through.

Kyosho Inferno GT with Castle Creation 2200kv motor

Here is a picture of the RC-Monster Servo mounts, it is nothing special. I was too lazy to fabricating something myself, and since I was going place an order with RC-Monster anyways I just bought what they had instead.
Kyosho Inferno GT - Hitec HS_645MG and HS_7955TG Servo
At first I wanted to buy or fabricate a battery tray for the IGT. But during my test runs I double side tapped the batteries to side guards and they held on pretty well. So after sitting there staring at the IGT for a few minutes I thought I could just Velcro it to the side guards, its kind of like double sided tap but easier to mount and dismount.

And this is what I came up with, and so far it works great!

Kyosho Inferno GT - Custom Lipo battery mount

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