Carbsmart advice for raptor 30 v2 Please

[nightstalker]

FIGHT FIGHT FIGHT LOL

[Ashley Davis]

actually the 'you have to learn to tune an engine first' comment isn't true....... you don't, if it's a single needle carb.

All you do is start very rich, read the manual to get your start point on the needle (usually about two turns out). Then all you do is lean the engine by 1/4 of a turn and each time reset the carbsmart servo / arm position to center point (ie. manually change the center point by adjusting the servo arm position on the carb needle).

Take off and fly about a bit, come back to hover and look at the carb needle position in a side on hover. If the carbsmart is holding the arm at fully lean, then lean out 1/4 turn and repeat procedure.

At the point you start to see the carbsmart trying to richen the engine you have hit close to the sweet spot. Land, richen by four clicks or so and reset the arm position to center again. Carbsmart has about a half turn of carb movement. So basically you can tune your engine knowing absolutely sod all about engine tuning and with little to no risk of going too lean at any point...... unlike manual tuning where you discover you are too lean when the engine back plate gets too hot or all your smoke disappears.

[Tosh]

Still
Far better to learn how to tune the engine.

[Ashley Davis]

That knowledge may come in handy at some point I agree, the point was you don't absolutly need to know it anymore.

[Britflyer]

Still
Far better to learn how to tune the engine.

Or go electric!


Paul

[Tosh]

The OS 37 and 50 are very easy engines to tune anyway so you don`t really need a carb smart. lf you went for a Webra or TT engine where the slow running jet has a big say in the tuning then you will definately need to tune the engine before using a carb smart. Where the carb smart come into its own is on the 90s but most of these are three needle carbs and will need to be tuned first. Thats the way l see it anyway.

[Tosh]

Or go electric!


Paul

You know it.

[Ashley Davis]

The OS 37 and 50 are very easy engines to tune anyway so you don`t really need a carb smart.

OK, but I plonk my heli down, start it, go fly and don't bother tuning it and get a perfect run, no leaning at the end of flight as the carbsmart automatically richens it. Also I don't have to worry about being one or two clicks off and potentially heating my engine more than it should. It runs 120C bang on all the time as that's what I've set it at.

Manual tuning won't get you that and that is the point of the carbsmart. It doesn't matter how good you are at tuning engines, every manual tuner will get a slightly lean run at some point due to getting the needles wrong. Manual tuning is a GUESS, based on feeling temps and listening to the engine in the air, watching the smoke trail etc. OK, manual tuning works, it's a useful skill but ultimately it's no where near as good as controlling the engine temp to within a couple of degrees throughout the entire flight.

Bottom line..... my engine is going to last longer than a manual tuned one.

[Tosh]

Thats assuming the carb smart or servo never goes wrong.

[Ashley Davis]

1) it's bloody obvious when it does
2) when it does it's little different to having a lean run due to manual tuning, except you only did it the once.

[Ashley Davis]

I should add here that I'm not advocating that there is only one way to run an engine (with a carbsmart). Just that there are a lot of very good reasons for doing so if you like the advantages it offers and are prepared to spend on one.

[Streetluge Chris]

When you look at all the info on the carbsmart its a good bit of kit and works in much the same way as a car which adjust the fueling as you drive.