| Author | Message | ||
     Datsaxman |
Danny You have the numbers in the right order...just divide in that same order. Bore: Stroke ratio is the right order. Just like compression ratios are Full:Empty. Bigger bore than stroke is usually referred to as "oversquare". Square and undersquare should be obvious. Now we can say something general about engines: Oversquare engines typically thrive on high rpm running. Undersquare typically cannot rev high at all. There is a LOT more that could be said about mean piston speeds and rod length: stroke ratios, but that is a good start. | ||
| Nm5150 |
Peggy is like all of the old Fords I have owned.Putt around and they break,Beat them and they love you.My tires don't though  | ||
| Stirz007 |
OK - back to the original thread if I may: From what I understand (Jdug please jump my sht if I'm off here), the 1125 alternator assembly was kept light and isn't as robust as it could be. The sacrifice is that it has trouble (or just won't) produce enough power at low rpm to keep up with other draws, like fans and lights. If you idle a lot, you will drain the battery as it sits there running. When you increase rpm, alternator output increase more or less linearly until at some point you exceed 'baseline' draw, then you begin to charge the battery. Sorry if this sounds like a lecture, but this is kinda basic: you do have to run at a reasonable rpm to keep the battery charging so you have reserve available when you idle - that's the beauty of a battery - the ability to store charge. So, yes, run it like you stole it when appropriate, idle when you need to. Under the 'normal' range of riding, I've never had a problem - now if I leave it off the tender for a while, then I'm dead meat. | ||
| Dktechguy112 |
stirz007, first off the 1125 uses a stator, not an alternator. A stator is inside the engine, and runs of the crank. The problem is it produces to much power. It was not kept light it was kept cheap, they cheaped out on the winding and it overheats. The harness cuts one leg of the stator under 5k rpms to keep it cool. When its over 5k rpms, the oil pressure is high enough to properly cool the whole stator. Hence those that "ride it like they stole it", aka keep the rpms high tend to not have stator problems. The stator should power everything fine at idle or any rpm level for that matter until it craps out, then the battery will not be recharged and it will suck the juice out of the battey and the bike will stall out. | ||
| Stirz007 |
"it is better to remain silent and be thought the fool, than to speak and remove all doubt" - Mark Twain The alternator consists of a stator and rotor. The 1125 uses both, I'm afraid.... | ||
| Captain_america |
Mine failed @ 4000 miles, now I ride more spirited... while it is way fun I also am breaking the law almost all the time, which is no good. | ||
| Guard_rail |
I rode it like I stole it and the cops pulled me over. The last thing I saw was 12.2 on the voltage page. She never came back after that......till I jumped her. She's outside now getting some overnight tender love and charging cause she made it home but refuse to go any farther. I really need a reliable bike. Can't I just buy some 1190 $#!t to solve my problems? Or 1125r 08 stator/regulator (Message edited by Guard_rail on July 31, 2010) | ||
| Metalrabbit |
I ride it like I stole it an it still went out! If what many of you say is true,"you don't ride it hard enough", "your tires are lasting 4,000mi, thats too long, your not riding it hard enough", You have to keep your revs at 5,000r's an higher", "you have chicken strips too wide" and so on insults without real knowledge,, Then why has there been a "Charging System re-call" for my bike at Paradise H-D all this time??? They said, "Jerry, the parts for your bike are here on the shelf". I knew nothing about any re-call but apparently its been there all this time. I bought it 5-2009,,,, just a thought for you know it alls. | ||
| Jules |
The reason you didn't know about a recall is because there isn't one for the stator.. It's a voluntary scheme not a recall. You can jump right in and call people "know it alls" but you ought to be sure of your facts before you leap.. | ||
| Guard_rail |
Yeah, but. Does the pin in the ecm need to be replaced in orig. hole if I run no harness???? | ||
| Tippster |
90% of my riding is commuting - and there's nothing wrong with that. I bought the bike for the other 10%, but still love swinging my leg over every day. Acting superior to that simply because you have multiple bikes or only ride the track makes you sound like a sanctimonious douche, not like a sage. I don't care if some of you heroes don't have chicken strips and only ride in the 5k+ RPM range - good for you. If I did that I would not have a license long, or I'd never get out of 2nd gear. Shouldn't the bottom line be to simply use a tender on "normal" days and occasionally flog when appropriate? Works for me. | ||
| Metalrabbit |
The service manager said "Recall" for that and some kind of "Oil Jet" for the trans, I have it on phone message. I get pissed when some ASSUME I'm riding my bike incorrectly without any evidence at all. I have been involved with performance vehicles since 1969. I knew the nature of the 1125's engine the first day I rode it home,, and I smiled Big! and kissed the air box cover. These website's all end up the same way. Some like to run around and bash people every chance they get like they're Gawd Almighty. I have watched many of them get humbled themselves many times over,, so I would be careful in the future. And "jules", I didn't buy the 1125r as an "investment",, I will have invested $12,000 + at payoff,,, see what your doing? | ||
| Dannybuell |
Metalrabbit - I agree, sometimes the 'site culture' aka cheerleaders rule the roost. | ||
| Metalrabbit |
Thanks Danny, I appreciate that,, we'll just hope for a better tomorrow. | ||
| Milt |
I just got my ride back today. I tried very hard to maintain 5k+ rpm on the way home from the stealership. I felt like an idiot screaming down the street in first just to maintain 5k. This will take some getting used to. | ||
| Captain_america |
People were thinking... " Why the Efff doesn't that dumb a$$ shift!?!" "ratard!" | ||
| No_rice |
"Ride it like you stole it!!!" is there another way to ride it?!  | ||
| Mountainstorm |
With the stock ECM I did feel like I had to ride at or above 4500 RPM for the bike to be happy. I have an 08. I don't have any electrical issues. I road all winter and often used heated gloves and jacket. About mid Winter I got my E B R Race ECM and found that the engine was now happy at sub 4000 RPM loads. I still keep the bike near 4000 before wicking it open, but it'll chug along at 3800 in 5th like a freight train. I then put about 10K miles with the Race ECM using that lower rev range and never saw any charging issues. Now I've got the stock ECM back on and the bike is wanting higher revs again. Just saying that (at least with my machine) riding at 5K is not required for the charging system to operate. Even with the extra load of heated riding apparel I didn't need to ride at 5K all the time. Riding at or around 4K is not "racing around in 2nd gear" either...I can ride at highway speeds in 4th and be at or around 4500 RPM. I have no desire to return to the Gray Bar hotel for speeding, but I might as well name my bike Jailbait...it's impossible to putt around...she wants to go. | ||
| Jules |
And "jules", I didn't buy the 1125r as an "investment",, I will have invested $12,000 + at payoff,,, see what your doing? Actually no, I have no idea what you're talking about but oddly enough I could care less.. And "Jules" doesn't need the quotation marks as it's actually my name..but it does require a capital letter as it's a proper noun.. (Message edited by jules on July 31, 2010) | ||
| Metalrabbit |
It's in "3rd Strike" topic Jules | ||
| Fresnobuell |
Riding at 5K is not hard...I do it all the time. Last time I checked the rev range extends to 10,500 (a bit more with the Erik Buell Racing ECM) so you are still in the lower half of the rev range. | ||
| Timtowtdi |
I've been wondering about the value of this riding around at 5k recommendation. I have tried it, and have noticed that the engine temp runs hotter at 5k than at 4k, by about 10 deg F. As far as I know, engine heat comes from the combustion process, and by running at a higher rpm, you are having more combustion events per minute than if you run at a lower rpm. If the radiator efficiency determines the amount of heat the system is able to dissipate, it seems natural for the engine to run hotter at a higher rpm if the air volume through the radiators remains the same. So the only value I can see in running at a higher rpm is to increase the alternator output and decrease the load on the charging system. Is this the sole reason for this recommendation? TT | ||
| Datsaxman |
Tim, You don't cite the actual temperatures. Yes, more combustion events at higher engine speed of course. This should not automatically be a bad thing, though. Exercise makes your heart pump faster, but that turns out to be GOOD for your own longevity. Not the best example, but... Higher engine speed circulates the oil around the alternator faster. Proposed as being good for the longevity of the 2009 charging system components. See the really long thread. | ||
| Timtowtdi |
Ok, but is the oil circulated around the alternator hotter at higher rpm than at lower rpm, or the same temp? I can ride around in +90 deg F temps and run around 178 ect around 4k rpm. Run the engine at 5k rpm, bike a the same speed so obviously a gear lower, and the temp quickly climbs around 190 deg F. I would assume my oil temp is also higher at the higher rpm, but I have never measured as I don't have a good way of doing so. I would attribute the higher temp to the increased number of combustion events creating an increased amount of heat, and the cooling system not being able to dissipate that heat fast enough to keep the temps down. No? Does the oil pump move an infinitely increasing volume of oil according to engine speed, or does there reach a point where no matter how much faster you spin the motor, the oil volume moved through the engine will not increase? Tim | ||
| Datsaxman |
Hotter oil - if we are talking 178F and 190F kinds of temps is a non-issue. Somebody care to comment on the correlation between oil temp and CT? Can't answer the oil circulation rate question. Typically, oil flow rate is proportional to engine speed as that is very easy to engineer mechanically. At high pressure there is often a relief valve. NO IDEA how the 1125 circulates oil, so... 190F is well within the operating range, so no worries I think. Again, the real experts may very well have a lot more to say. | ||
| Tpoppa |
Engine heat is not the main factor that affects the stator frying. The stator is it's own heat source. Some heat is removed in the oil by convection. Some is shunted via the regulator. Still, more heat remains than can be managed. The harness upgrade is an attempt to remove additional heat from the system. | ||
| Sekalilgai |
took a short (80mi) ride today and made it a point to keep the tach around 'noon' and noticed that the voltages hovered around 13.1 with a dip to 12.4 at idle (w/fans running). Bike (09CR) only has 1100mi with harness upgrade done at 600. I noticed someone mentioned the FH012AA MOSFET reg some threads back, found an interesting thread on the GS board (as in the old Suz GS) that compares the MOSFET FH012 with the series regulator from Compu-fire. These guys are experiencing similar stator burn-up problems..... http://www.thegsresources.com/_forum/showthread.ph p?t=161397 It seems like the factory harness upgrade attempts to mimic this behavior by disconnecting one leg of the 3-phase output. Anyway, my stator/reg is not showing signs...yet! | ||
| Dannybuell |
Sekalilgai - "These guys are experiencing similar stator burn-up problems.." Do you think they outsourced their stators too? :-) | ||
| Ezblast |
I did Mt. Diablo With Thomas on his SCG entered through Northgate went down Southgate to Danville - a great set of continuous twisties - started the day at a peak of 13.8 by the time down the road, tried to keep the rpms at the 5000 to 8000 area, however, with the twisties that just isn't possible and I watched it go down to 12.0 by Danville, so because Thomas was crunched for time and I needed constant hi rpms to recharge the bike back up - we took the freeway to my place for a beer before he had to take off to run family errands. By the time I got home it peaked at 13.4 and I parked the bike at 13.2 - ok but that was some serious degradation of battery charge, and lousy charging - ridding it like you stole it is not working - sigh... EZ | ||
| Sekalilgai |
Dannybuell...haha..not sure, we're talking about late 70s/early 80s air-cooled Suzuki GSs....don't think the concept even existed back then. |
