At my previous report I had started running the Mini-Inferno 09 after breaking in the engine. I can’t say that I’ve explored every aspect of the machine, but I have given it a decent run on gravel and on a wide open paved area.
![](../../../../common/spacer.gif)
Driving Part.1 (Gravel) :
Gravel driving test was conducted at a secret location usually used for R/C helicopters.
At about 600m2 , it wasn’t that big but with a 1/16 size I could open it right up and enjoy this machine in a relatively tight space. (Sorry I cannot supply photos as this was a secret location)
The included pin-spike tires provided reasonable grip and easy drift control. I was also quite impressed with the degree of completion of the chassis and suspension. Next time I would like to try with some other tires.
It may be related to my setup, but the left / right timing from a standing start seems out. Right side seems faster. I wonder if this is due to counter-torque from the engine???
![](../../../../common/spacer.gif)
OH (Overhaul) Part 1 :
After running on gravel the car got quite dirty. I gave it a clean up with an air gun and also a light overhaul.
I removed the engine and front/rear gearboxes from the chassis and cleaned up with alcohol. I also checked for any wear and tear.
I took a hit in the dirt and noticed the front suspension shaft was slightly bent as a result. I fixed it and reassembled.
Also, wear on the center dog bone seems significant. About a third of the pin had worn away. I applied some dry grease and reassembled to see how it would go.
![](../../../../common/spacer.gif)
Driving Part 2 (On-Road) :
You probably recognize this famous place for flying models - Ojima Flying Field.
While the flying club was having a lunch break, I took the Mini-Inferno 09 out on the runway.
Anyway, for posterity I took a photo on the main heli pad. (Photo 1. on the heli pad)
Opened it all the way up every time. I was worried the engine would blow, but I ran it at full throttle all the way. (Photo 2., 3 : Driving at full throttle)
This was like an engine durability test. Trust Sirio engines not to overheat. I ran 2 tanks through at full throttle. Normally a machine wouldn't be run at full throttle for this period of time, but this proved the machine's high durability. But screwing the needle in too far is taboo…
![](../../../../common/spacer.gif)
OH (Overhaul) Part 2 :
This is my last report so I disassembled the machine completely.
In total I ran through 4L of fuel and didn't find any particular part that was damaged. I was extremely impressed with the machine's durability again.
The dog bone pins that I was worried about last time continued to wear down so there was only a third of the material left.
Next time I do an OH, these will need replacing. The wear was only on the spur gear side, but both ends might need to be considered.
One last thing, I found some exhaust escaping from the manifold and silencer joint. I disassembled these a few times so I think if you just install a new O-ring that should solve the problem here.
![](../../../../common/spacer.gif)
General Comments :
I would like to say thank you to all at Kyosho for giving me the opportunity to be a monitor for this product and submit my reports.
I suppose most other monitors are R/C car users, but my opinions are through the eyes of an aircraft user. So my impressions were probably closer to those of a beginner.
While the Mini-Inferno 09 is a joy to look at, it is also a fully featured racing machine so experienced R/C racers will also be very satisfied. I look forward to the release a many interesting optional upgrade parts.
(What I would like to see available as optional parts: dog bones, silencer, carbon suspension mounts etc.)
|
![](../../../../common/spacer.gif) |
![](images/r4-01.jpg) Photo 1. on the heli pad
![](images/r4-02.jpg)
Photo 2 : Driving at full throttle
![](images/r4-03.jpg)
Photo 3 : Driving at full throttle
|