CSM Carb Smart temperature sensor

Installation pretty easy.
I take away the power source "signal wire" as early user complain the feedback "signal wire" may jam the (JR) receiver.
Remove the needle valve retch.
I use longer 3mm screw for the needle clamp. The stock is bit too short to secure the nut.





DIY a servo mount.
I use the ball link rod from my Trex450. You can use spare Trex600 servo link (the one connect the T-connector) , which is a perfect match/ length.
I change the ball inwards later, finding that the outer servo horn ball may touch the canopy.






Full lean position setup. Use the CarbSmart potentiometer to adjust. Actually, you can have servo travel by 80 degree only. I set :
Most Lean - 1 turn
"neutral/ failsafe" - 1 turn 4 click
Most Rich - 1 1/4 turn




Mount the sensor on os head. Use DIY aluminium sawdust mixed with A/B glue.


Since the sensor is easy to be destroyed on dismounting from the engine block , you can DIY your sensor by using a 100K thermistor, cost $2 only.

Must remember to adjust the gain after the initial setup as it is easy to leave the potentiometer at extreme anti-clockwise( during rich needle setup). This leaves the gain at zero. Now I adjust the gain to around 80%.

Installing carbsmart for almost 2 galloon, I finally can see my needle goes to richess position on landing. Actually Carbsmart save me today. My engine suddenly lost power after 4 mins. violent tic toc, piro-flip for 1 min, and funnel. The smokes get thicker and I land it immediately. I read the needle is at most counter-clockwise for almost 15 seconds!! I was surprised to find that the muffler back pressure hose was completely detached from the muffler !
What the hell! This cheap little gadget did save my engine! Last time my leaking hose blown my piston before I had this carbsmart!





More fine tune. The needle neutral position was turned more lean by few degree (see the circle). This make a huge difference and I can see the Carbsmart is now richen the needle at end of 3D. 3D flight is more powerful. Now the gain is set ~60%.