Backfire?

[Lilray]

Will the bike backfire if the throttle is opened to aggressively with traction control on?

Scenario;

I was on a dirt and gravel driveway, TC1, sport mode, first gear, clutch all the way out rolling at 5 mph maybe.

I whacked open the throttle to kick the rear end around and POW! Backfire.

It didn't stall, but I pulled in the clutch and started out again. It seemes to be running fine, but is this normal?

I've had the TC kick in many times before this doing the same maneuver, but no backfiring.

Maybe just a fluke? Anyone else had this happen?

 

[Firefight911]

My bet is that this was a fluke anomaly.

Remember, this is a drive by wire bike so "whacking: the throttle is a thing of the past. Computers control the speed that the butterflies open, not your wrist.

Your scenario suggests that there may have been a load against the motor while it was idling along which could theoretically allow a slight downstream rich condition that you caught with just the right timing with your computer controlled butterfly opening.

 

[20valves]

In TC1 you will not be "kicking the rear around." That's what TC2 and TC off are for. The bike will fight itself in a low traction situation in TC1 + S mode. I ride S mode in TC2 or TC off. T mode works better with TC1.

 

[Lilray]

My bet is that this was a fluke anomaly.

Remember, this is a drive by wire bike so "whacking: the throttle is a thing of the past. Computers control the speed that the butterflies open, not your wrist.

Your scenario suggests that there may have been a load against the motor while it was idling along which could theoretically allow a slight downstream rich condition that you caught with just the right timing with your computer controlled butterfly opening.

That's interesting, I've never had fuel injection, or ride by wire. Just four carbs in a row connected directly to my wrist, no middleman.

In TC1 you will not be "kicking the rear around." That's what TC2 and TC off are for. The bike will fight itself in a low traction situation in TC1 + S mode. I ride S mode in TC2 or TC off. T mode works better with TC1.

After I went back and reread the manual I realized that TC1 is the less sporty of the two settings. Although it does allow some slip, not nearly as much as TC2 or off.

Thanks for the input, I'll have to see if it happens again, or if it happens with different settings.