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Under seat exhaust

Started by bucket_chemist, July 17, 2012, 10:29:08 PM

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BockinBboy

Quote from: RossLH on July 25, 2012, 05:39:11 AM
Quote from: twinrat on July 25, 2012, 02:27:45 AM
the underseat exhaust in racing is set at a pacific angle

As opposed to an Atlantic angle?

Interesting, I read this through the first time and read the word 'specific' lol

- Bboy


Sonic Springs, R6 Shock, R6 Throttle Tube, Lowering Links, T-Rex Frame Sliders, SW-Motech Alu-Rack, SH46 Shad Topcase, Smoked Signals, Smoked LED Tailight, ZG Touring Windscreen

iclrag

Quote from: BockinBboy on July 25, 2012, 06:31:32 AM
Quote from: RossLH on July 25, 2012, 05:39:11 AM
Quote from: twinrat on July 25, 2012, 02:27:45 AM
the underseat exhaust in racing is set at a pacific angle

As opposed to an Atlantic angle?

Interesting, I read this through the first time and read the word 'specific' lol

- Bboy
I read pacfic at first to, but i assumed he meant specific, the typo totally makes it look lik ean ocean  :icon_twisted:

burning1

Quote from: bucket_chemist on July 25, 2012, 01:20:09 AM
I always figured it was to improve ground clearance for when you're leaned way, way over. As for the GS, I just think it could look pretty cool if done right.

Clearance can sometimes be an issue for side-mount exhausts, but hasn't been a problem on modern race bikes since long before the introduction of the under-tail exhaust.

Quote from: twinrat on July 25, 2012, 02:27:45 AM
the underseat exhaust in racing is set at a pacific angle and aids performance .It is not there for centre of gravity effect .I think it was ducati or one of the other major teams had it set wrong and were handicapped in performance before they discovered there problem ,it is for the streamling effect .The benifit must be worth it to have the extra bends in the exhaust.

The point of lowest pressure on a motorcycle is not directly behind the tail.

http://www.gsxr-suzuki.it/en/hayabusa/hayabusa-k8/wind_tunnel.jpg

burning1

Seriously... Honda dropped the under-tail exhaust on the CBR1000RR, and went to under-belly. Ducati did the same on their premier sport-bike.

It's been a style thing the whole time. Extra weight, worse mass centralization, cooked ass, and no storage space. There isn't any benefit to the under-tail exhaust, despite what the manufacturers literature says.

bucket_chemist

Quote from: burning1 on July 25, 2012, 10:03:07 AM
Seriously... Honda dropped the under-tail exhaust on the CBR1000RR, and went to under-belly. Ducati did the same on their premier sport-bike.

It's been a style thing the whole time. Extra weight, worse mass centralization, cooked ass, and no storage space. There isn't any benefit to the under-tail exhaust, despite what the manufacturers literature says.

So...you're not a fan then? :)
2007 GS500
Heated grips are my favourite accessory.

burning1


twinrat

SORRY GUY'S  SPECIFIC IT WAS MEANT TO BE  ,MUST OF HAD BRAIN FADE

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