| Author | Message | ||
     Jackgraves |
Ok so ebr ecm or stock I can make it shut off. Once up to temp if i waak the throttle open at a dead stop it will shut off just like turning it off with the key. when it shuts off it usually backfires threw throttle body also. I give up and need you guys help. maybe i should not waak the throttle open like that, my jap bikes never had this issue, or can you guys make your bikes do the same as mine. | ||
| Jdugger |
I think this is relatively 'normal' behavior for large bore twins, and not just our Buells. Certainly all three of my 1125r bikes will do it. If you have a quick wrist, you can blip the throttle from settled idle and stall the motor. I presume that's what you are talking about? Of course, my right wrist is this fast because I've played drums for 20 years. What's yours?  Are you experiencing this blipping for down shift into corners, or is it just a driveway phenomenon? I don't blip mine going into the corners, I just give it a little forward throttle pressure and let the motor spin above idle. That plus the slipper seems to settle the rear enough that feathering the clutch does the rest of the work. If it's just a driveway issue... rev the motor, don't blip it. Remember, compared to an inline 4 motor, you have a lot of reciprocating mass to get moving there. | ||
| Jackgraves |
Ok thats it man, just dead stops or driveway, thanks for your help dude | ||
| Froggy |
The laws of physics are at play. Same thing happens on the XB's, but they are more prone to it due to the heavy flywheel. User error.  | ||
| Gemini |
if it does that when you do that......don't do that. what you are describing is outside of the range of reasonable use. what you are describing has no use. now if you were driving in 4th gear at 4000 at cruising speed and then hammer it and it dies out, sure, you got a issue. but at idle and you hammer it and it shuts off..............don't hammer it at idle. that is a small penis technique of showing off a lack of restraint | ||
| Carbonbigfoot |
First question. Does it still have the intake solenoid? Mine did just that BAD before I yanked the 'noid. Hot or cold, blip the throttle at a stop light, and BAM. Off she went. So, Noid or no Noid? R | ||
| Usanigel |
Suddenly opening the throttle gives hugh volumes of air and the system can't react quickly enough to compensate. You end up with loads of air and next to no fuel. No fuel and it stops! This would not happen on CV carbs because of the way they work. Almost standard of the Jap 4 cylinder before F.I. | ||
| Gemini |
noid only functions in 3rd gear. not sure of the other parameters it uses (tps, ect, etc.) but it is only 3rd gear | ||
| Thefleshrocket |
The noid may only be designed to function in third gear, but that doesn't mean that it can't have an effect at other RPM or in other gears. Mind had a tendency to bind up when the bike got warm--I'd twist the throttle and feel resistance. Removing the noid got the throttle moving smoothly again. | ||
| Jackgraves |
It is denoided and gemini ill show you some restraint buddy | ||
| Lastonetherebuys |
don't get pissy when you ask for advise and don't like the answers that you are given. | ||
| Jackgraves |
sorry gemini thank you for the help guys (Message edited by jackgraves on May 15, 2010) | ||
| Dannybuell |
the humor is amusing here I hope nobody takes it personally. "Of course, my right wrist is this fast because I've played drums for 20 years. What's yours?" | ||
| Lastonetherebuys |
try using the left it feels like some one else is doing it lol | ||
| Froggy |
That reminds me, after I broke my collar bone and wrist last year, I had to drive my Blast using my left hand on the throttle. Boy, that was odd and took a while to get used to! | ||
| Gemini |
i take nothing personal. not worth it. i don't even take it personal when the guys that work for me get pissy and upset. you asked some questions. if i believe i know the answer, i'll chime in and try to help. I DON'T KNOW EVERYTHING, but i'll try to help when/if i can | ||
| Ron_luning |
When I test rode an 1125R at a motorcycle show near the end of 2008, the 2009 model would stall with any rapid opening of the throttle. This wasn't just in situations like when big twin riding idiots like to make noise at stoplights. If blipping the throttle on downshifts to match rpm causes the engine to stall, then you have a problem. That is how bad the test bike was. I told one of the guys working there about it and he said it definitely should not do that. My bike does not do that. It's impossible to tell without either seeing it in real life or at least a video of the situation to say whether or not there is a problem. Yes, snapping the throttle open while sitting still is a waste and if the bike stalls it isn't a big deal. However, not being able to blip the throttle while in motion is a problem. | ||
| Mattj |
Here goes. I can understand this stalling is a buell thing but not all big v-twin thing. I have a vrod also and have been around plenty vrods that have more power then the buell and you can blip the throttle and it will not die. now I do feel the 1125r motor is better then the vrod but buell is not as smooth. Now I would like to find a way to make the throttle lighter. also what is the purpose of the noid that everyone talks about. | ||
| Froggy |
The V-Rod is a totally different motor. The V-Rod, to the best of my understanding has a single 46mm throttle body. The 1125 on the other hand has two 61mm throttle bodies. It isn't hard to figure out which one can suck in more air and potentially stall the motor out.
Change to the Race ECM. The stock EPA compliant fueling leaves much to be desired.
The solenoid, if you looked in the New Owner FAQ, is a noise abatement device attached to your throttle bodies. Under certain conditions in 3 gear, the solenoid will restrict airflow to reduce intake noise and pass EPA regulations. Removing this solenoid will lighten the throttle and improve response. | ||
| Mattj |
all big vrod motors have a pair of 58mm. I have had one on my bike for years. I think stock is a pair of 56mm. not not as big but still has alot of air going in. maybe after i build my vrod motor this summer i can change the ecm on the buell. how do you fell about the american sport bike tunner. if the noid is unless it may be coming out soon | ||
| Zac4mac |
Be civil, I've seen a couple of Personal Attacks® here and only one was rectified. Settle All 1125s should have the 'noid removed and the throttle plates tied. It removes the 3rd gear flop and lightens the throttle. Tying the plates stops high-end "flutter" that shows up on the dyno as a very jagged end-run. The 'noid was ONLY installed to satisfy the EPA noise law. Zack (Message edited by zac4mac on May 15, 2010) | ||
| Americanmadexb |
All 1125s should have the 'noid removed and the throttle plates tied. Unless you have Erik Buell Racing ecm!  | ||
| Zac4mac |
Even so Ian, you should remove the cable(less throttle force) and tie the flies(no flutter) for easier/better operation. Z | ||
| Brumbear |
sounds like low fuel pressure | ||
| Gemini |
"sounds like low fuel pressure" ummm....not so much. aside from what it may or may not be the reason for why it shuts off when this method of reving the motor is used, why do it? it doesn't point to any problem in the bike. the shift light kicks on at around 5000 rpms in neutral. that is a pretty good indicator not to go wide open and bounce off the rev limiter in neutral. to me, the problem isn't a problem. it's a quork that happens outside of the normal operating range of the bike. | ||
| Stevek1125r |
Though the 1125 has large TB in comparison to other engines of similiar size, they aren't so large that they would cause the engine to die by just blipping the throttle... Mine doesn't experience this issue... I am sick of seeing this whole idea that we as consumers should settle on a product... "its doesn't like it so you shouldn't do it" thats a silly remark for anyone to make... If the engine didn't like it, then why did they design it that way.... I agree that the factory tune is less than desirable and the fix for this may not be a simple dealer fix... tuning maybe be required, but IMO any engine that stalls by blipping the throttle is not tuned correctly.... Fuel injection is far superior to carbs (in most applications), yet Big V-twins with carbs don't have this issue once they are tuned... SO whats the excuse now???? O.P. take your bike in if you feel its is not correct.... maybe get a tune..... either way, dying by blipping the throttle is not acceptable and this isn't a quirk.. its not right... | ||
| Gemini |
there is a point in time that when people who actually know what the are talking about get fed up with people who don't fully understand the whole design of a complete system. can a bike be tuned to not shut off when someone takes an idling bike with a fully closed throttle and whack it fully open bounce off the rev limiter and slam it shut with out the bike shutting off}? sure. but then you are going to be unhappy with something else. a hanging idle when slowing down while in gear because the throttle blades are more open or because the IAC is staying open longer or the bike pops on decel ALOT because more fuel is being added to keep low mass engine from stalling on a no load high rpm decel. now i agree, if you are doing something that is considered "normal" and something abnormal is happening, then yes something may need some further attention. | ||
| Satori |
+1 Glitch KNowing a bit about this myself, basically it all comes down to velocity of the air moving trough the TB. In order to satisfy the bikes mission of power at higher rpm's you will have this. Now if you want the bike to be a parking lot queen, and sound impressive but be less so, you would need a smaller TB as a starting point. Basically all enginering is a exercise in compromise. Especially with ICE engines. In the cage world they solve this with complicated intake manifolds that keep the velocity up at low speeds but will allow high flow at high rpm. they have lots of space for this, where on a v twin , especially a 45 degree has almost no manifold area. The 1125 has a small area also, being only 72 degrees also. All that said, could there be a problem, yes. But without seeing/ hearing it do it no real way to say if its a behaviour that is normal or not. Just my .02 YMMV P.S. post a video and this board will probably let you know... (Message edited by satori on May 16, 2010) | ||
| Rooster_1 |
This condition is not normal and should not be accepted. Regardless of throttle body size, an engine is only going to pull in a certain volume of air over time. Only fuel can be forced into an engine, not air. The throttle body is simply a valve that allows the engine to “draw” in its own air. The most probable cause of the “stall” is actually too much fuel being introduced. A lean condition will only bog acceleration. A over rich condition will cause a stall. (Message edited by Rooster_1 on May 16, 2010) | ||
| Ron_luning |
You lose a lot of credibility when you call a throttle body a throttle bottle. Just sayin'... |
