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Message started by seb481 on 07/01/09 at 10:27:46

Title: Mini Explosion in the Exhaust
Post by seb481 on 07/01/09 at 10:27:46

This usually happens when:
- I'm in 5th and releasing the throttle
- turn off the bike

There is like a small explosion in the exhaust.

Why does that happen?

Is it bad?

Title: Re: Mini Explosion in the Exhaust
Post by serowbot on 07/01/09 at 10:30:49

It's saying thank you,... You'll get used to it..
Big thumpers are famous for it.  
Savage is king of the thumper backfire ;D

You can tone it down if you want to mess with the carb a bit.

Title: Re: Mini Explosion in the Exhaust
Post by odvelasc on 07/01/09 at 10:38:15


233532646861500 wrote:
This usually happens when:
- I'm in 5th and releasing the throttle
- turn off the bike

There is like a small explosion in the exhaust.

Why does that happen?

Is it bad?


Its called backfire. Welcome to the club.

Title: Re: Mini Explosion in the Exhaust
Post by serowbot on 07/01/09 at 10:46:23

Everybody calls it a backfire, but technically it is an "afterfire"...
Backfires are back, through the carb...
Nobody call them afterfires though,... it doesn't sound as cool... ;D

Title: Re: Mini Explosion in the Exhaust
Post by seb481 on 07/01/09 at 10:46:46

Cool, so that's not a bad thing. Awesome because I love the sound of it. Makes me feel like I'm riding a fast machine  :D

Title: Re: Mini Explosion in the Exhaust
Post by srinath on 07/01/09 at 11:56:22

I used to have this eliminator 1000 that I had removed the collector thing and I got a 4 into 1 fitted on it. It had massively unequal length header pipes and when I shut the throttle at speed, it would seriously sound like an AK47 was being fired. Stacatto gun shots like rat a tat a aaa tat a tat tat aaa tat tat tat. It was ocassionaly accompanied by flames out the pipe - Awesome.
Cool.
Srinath.

Title: Re: Mini Explosion in the Exhaust
Post by photojoe on 07/01/09 at 12:41:28

I just pulled up to the house where a couple of guys were working on the lawn. Turned the ignition off, and the bike passed gas as usual. Looked over and smiled at them. Just a little fart, kind of the way you feel after eating a fine Mexican meal.

Title: Re: Mini Explosion in the Exhaust
Post by marine5317 on 07/01/09 at 18:47:21

I've had 8 Harlerys years ago and we use to snap the throttle closed and retard the spark at the same time and watch the flame come out of the mufflers.  kinda sounded like a 12 gauge high brass.

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Title: Re: Mini Explosion in the Exhaust
Post by David M Smith on 07/02/09 at 12:44:19

 I have come to enjoy being able to do that when I choose hehe. Some of my cycling friends like it too. Use it to make those ladies or gents look toward you! Think of the old advertising motto,"Any advertising is good advertising".

 However to stop the backfire on shut down I have found that you generally just have to let it idle for about 15-30 seconds before shutting it off  and that tones it down enormously if not totally stopping it.

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