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Buell Forum » Big, Bad & Dirty (Buell XB12X Ulysses Adventure Board) » BB&D Archives » Archive through August 02, 2008 » Explanation needed: 1125 Rotax vs. 1203 Thunderstorm « Previous Next »

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Archive through July 27, 2008M2nc30 07-27-08  10:16 am
Archive through July 24, 2008Uly108030 07-24-08  10:17 am
         

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Ft_bstrd
Posted on Sunday, July 27, 2008 - 10:36 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

... IMMHO, the Helicon is a street bike motor

The Uly, for the most part is a street bike.

What about a slightly lower displacement (850cc) bike with more HP than the current air cooled engine, similar torque curve with better manners down low.

Only rarely is there ever a situation where someone would need to swap out a spark plug on the side of the road.
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Electraglider_1997
Posted on Sunday, July 27, 2008 - 12:35 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

What does the 1125R spark plug look like? It has some fancy coil over plug arrangement. For those of you who excuse Buell for designing a bike where you have to drop the engine to service the spark plug then think about this. If you were having problems with the bike running rough, would you want to drop that engine to investigate whether it was a crappy plug or check the burn on the plug? Please quit your feeble attempts to excuse the inexcusable design FU this is.
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Ft_bstrd
Posted on Sunday, July 27, 2008 - 02:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

SPARK PLUG CLEANING PROCEDURE

2008 XB and 1125R Buell motorcycles provide a feature to help clear residual fuel from the combustion chamber if a flooded engine or fouled spark plugs are suspected. This is achieved by opening the throttle to wide open, setting the Run/Stop switch to Run, then turning the ignition switch ON. This will fire the spark plugs for approximately 4 seconds, burning any fuel left over in the combustion chamber. It may be necessary to repeat this procedure several times to allow a severely flooded engine to start.

NOTE: Motorcycle should be in Neutral.


The procedure for the existing powerplant has been to rotate the engine to change the spark plug. We've just been able to work around it.

It would be convenient to be able to swap out the spark plugs without having to drop the engine. I'm sure a work around will be devised.

What's the spark plug interval on an 1125R?
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Electraglider_1997
Posted on Sunday, July 27, 2008 - 05:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Fouled plugs on Buells need replacing, not cleaning. I have only had one fouled plug and that was probably about 9000 miles ago but once fouled they are toast.
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Ft_bstrd
Posted on Sunday, July 27, 2008 - 06:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Are the 1125R's subject to plug fouling?
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Unibear12r
Posted on Sunday, July 27, 2008 - 08:26 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

My 1125 has never fouled a plug or been hard to start.
Sounds like some people are trying to blend tools for two really different functions.
I wouldn't want the 1125 motor in my Uly. The Uly's height vs length is not right for that engines power. Especially with a big guy on top. It would need a much lower cg for starters. The bigger you are the more you need to stretch out rather than sit higher off the ground.
Re tune some of the 1125's top end for a bit more grunt in the basement and the 1125 with the current frame could be made into a GREAT ST bike. Maybe just use the CR gearing. Wouldn't need a lot of changes or additions.
The XB's long, smooth,easy, progressive clutch pull and large off idle torque makes that engine much better for really rough road conditions and hauling heaver loads.
The XBs are SO easy which makes you lazy. With the 1125's real short clutch engagement and much less off idle torque you have to pay a lot more attention to clutch and throttle when doing slow speeds, stops and traffic. Something you tend to get into a lot touring.
At 6'1" and 250 lbs (ouch) the 1125 is the perfect size/ergoed sport bike for me. It's the main reason I bought it. Change the seat, bars and pegs and the bike would have the ST ergos nailed.
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Froggy
Posted on Monday, July 28, 2008 - 12:14 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Ft_bstrd: 12,400 mile intervals (20k km)

All 08+ Buells are less prone to fouling due to different foul resistant plugs and the new DDFI3. I did a quick search of the 1125r section, and the few people that have fouled a plug were able to do the anti foul procedure to clean it.
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