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Buell Forum » 1125R Superbike Board » Archives 001 » Archive through February 07, 2011 » So, why 1125 and why 146 hp? « Previous Next »

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Sprintst
Posted on Friday, February 04, 2011 - 12:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Buell stated the power characteristics drove the displacement.

Announced in 2007, with a displacement of 1125 cc and making 146 hp, it seems to be at a disadvantage to the competition. Knowing what the 1190 puts out, one wonders why Eric didn't go a bit more

2007 Ducati 1098 - 160 hp, 90.4 ft·lbf @8000 rpm

(Message edited by sprintst on February 04, 2011)
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Hughlysses
Posted on Friday, February 04, 2011 - 12:37 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I think it's also been revealed since the closure that someone at HD ordained that Buell's new engine HAD to be smaller than the 1130cc V-Rod.
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Jdugger
Posted on Friday, February 04, 2011 - 12:38 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

There's a lot more than 146 available at the crank with fuel, timing, decked heads and exhaust. A lot more.

I'll tell you this: the 1125r motor in stock trim is a really incredibly durable unit. That's saying something for a big-bore twin.

I put over 34,000 street 10,000 track miles on my first motor, and while down on power a bit, it was still very durable and running great when I replaced it.

I beat the piss out of that motor.
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Fast1075
Posted on Friday, February 04, 2011 - 12:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ze motorz has farfrompukin.









Ok...way too much coffee...again.
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Cravacor
Posted on Friday, February 04, 2011 - 01:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Several bikes in this class have more power but they are all heavier as well.
Jdug, that is awesome.
Hugh,
Is that substantiated? It sounds completely silly yet plausible.
Then again, back in 2007 1125 was about as big a twin you could get. If we were living in a parallel world the 1190 would be available to the masses.
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Rogue_biker
Posted on Friday, February 04, 2011 - 03:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ducati got 160 bhp from their 1098 V-twin because they know how to extract every possible hp out of an engine and they are willing to push their engines further.

Let's face it. Ducati races in Moto GP and WSB, with MGP being highly competitive and only the best survives and wins. Their engineers become really good learning in those two environments. You simply can't learn that much from ordinary production and design. Just like Buell engineers learned so much by racing in the US.

This is why the Japanese are so good at extracting so much hp from inline fours down to 600cc's. It's really amazing what they can do.

If Buell was allowed to race in these higher tier venues, they too would be able to extract more hp from a given engine.

Racing always improves the breed.

This is also why H-D's engines are so stagnant. They don't race in any real competitive arena.
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Sprintst
Posted on Friday, February 04, 2011 - 03:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Well Ducati has also had a lot longer to extract more power from their engine, as you said, a lot of track time and engineering years to tweak 1 hp here, 1 there.

I was wondering why Eric didn't just adjust the displacement to match the competitions power, and it makes perfect sense to me that it could be a Harley imposed limitation

(Message edited by sprintst on February 04, 2011)
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D_adams
Posted on Friday, February 04, 2011 - 03:55 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)



http://m.sportrider.com/dyno/146_sportbike_dyno_ch arts/photo_47.html

Looks like 138 hp at the wheel to me. Mine has the same power. Yeah, it took a custom exhaust to get that, but it's definitely in the same range as the 1098.

I'll still take my 1125, thanks.
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Sprintst
Posted on Friday, February 04, 2011 - 04:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

yeah, not a huge difference in their charts





(Message edited by sprintst on February 04, 2011)
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Fast1075
Posted on Friday, February 04, 2011 - 04:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hmmmmmm....let me get this straight...Ducati got 160hp...wonder who the little bird was that showed them how....my information plays it as an american company helped with the horsepower leap....someone very famous in the drag racing world.

If I'm wrong....mehhh, it won't be the first time.
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Sprintst
Posted on Friday, February 04, 2011 - 04:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

fast - do tell, who did they tap?
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Stimbrell
Posted on Friday, February 04, 2011 - 04:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Harley's fault! Damn, my money was on those pesky Chinese or some other foreigners. Oh hang on...
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Spectrum
Posted on Friday, February 04, 2011 - 04:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I also thought I read somewhere that Ducati's claimed 160hp included the ram air pressurized during measurement.

I know searching the internet they actually end up dyno-ing at 123-128bhp
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Mountainstorm
Posted on Friday, February 04, 2011 - 05:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I posted my bone stock Dyno run a long time back. 131 RWHP. Stock everything. I should probably run it again now that it's dialed in.
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