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Message started by Greg on 07/31/12 at 16:45:36

Title: Another exhuast question
Post by Greg on 07/31/12 at 16:45:36
By adding a 30" tailpipe to my Thrush muffler, will that create any additional back pressure or change the sound?

Title: Re: Another exhuast question
Post by Cavi Mike on 07/31/12 at 17:05:42
Backpressure, no. Sound, yes. Any change to the exhaust is going to change its sound.

Title: Re: Another exhuast question
Post by Greg on 07/31/12 at 17:31:10

7E5C4B54705456583D0 wrote:
Backpressure, no. Sound, yes. Any change to the exhaust is going to change its sound.

Thanks!

Title: Re: Another exhuast question
Post by teabowl13 on 07/31/12 at 18:45:44
From what I've been reading, the longer your exhaust is, the lower and deeper the tone will be.
Based on that, I'd give it a try. 30" extra should make a big difference I would think. Even 15" is a lot of tailpipe, and that should be enough to mellow it out.

Title: Re: Another exhuast question
Post by Greg on 07/31/12 at 18:58:50

516064676A72693436050 wrote:
From what I've been reading, the longer your exhaust is, the lower and deeper the tone will be.
Based on that, I'd give it a try. 30" extra should make a big difference I would think. Even 15" is a lot of tailpipe, and that should be enough to mellow it out.

Cool! I am hoping to get it done this week!

Title: Re: Another exhuast question
Post by teabowl13 on 08/02/12 at 07:46:30
Get some sound bites recorded; before and after...

Title: Re: Another exhuast question
Post by Gyrobob on 08/02/12 at 08:05:54
Some local ordinances require red flags on items that stick out very far behind the back of the vehicle.

Title: Re: Another exhuast question
Post by Greg on 08/02/12 at 10:25:35

467773707D657E2321120 wrote:
Get some sound bites recorded; before and after...

I will try to remember...

Title: Re: Another exhuast question
Post by Greg on 08/02/12 at 10:26:02

6F515A474A474A280 wrote:
Some local ordinances require red flags on items that stick out very far behind the back of the vehicle.

I was thinking 30" not 30'!  ;D

Title: Re: Another exhuast question
Post by rfw2003 on 08/02/12 at 10:36:03
IIRC here in TX anything sticking more then 10" out past the vehicles rear needs a red flag or light on it.

I have one of the Emgo mufflers that Ryca sells the 26" one and it goes just past the brake adjuster so with a thrush muffler plus a 30" extension you will be well past the rear of your bike.

R.F.

Title: Re: Another exhuast question
Post by Greg on 08/02/12 at 12:09:48

10041550525251620 wrote:
IIRC here in TX anything sticking more then 10" out past the vehicles rear needs a red flag or light on it.

I have one of the Emgo mufflers that Ryca sells the 26" one and it goes just past the brake adjuster so with a thrush muffler plus a 30" extension you will be well past the rear of your bike.

R.F.

I am going to have it upswept. It will end just past the plate. 30" is a rough guess. It will probably be closer to 26 or 27 inches. Besides, I have cool flame on decel. Doesn't that count as a flag?  :-?

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