| Author | Message | ||
     Musclecargod |
Here's one that someone may have an answer to. Can someone give me more details on how the air solenoid on the 1125r works? Not the system, I have already de-noided the bike. I am curious about how the solenoid itself functions. Is it a pull only? Can it push also with reversed polarity? How much force does it generate? Is it rated for continuous duty? Reason I ask is I just bought a 12V Cummins diesel powered pickup and that vintage has no high idle function. Winter is coming and I thought this nice solenoid (which has been living in my toolbox) would make a pretty trick high idle system. It has just been so long I don't really recall how this thing was intended to function. Anybody by chance have more details other than hook it up and find out? I appreciate it. | ||
| Jdugger |
If you find a use for it, I have a couple of them! It's a pretty nice looking piece of whatever it is, and it's heavy... I've got to think it was kinda expensive! | ||
| Jimustanguitar |
What about a motorized exhaust cutout for a racecar? You could go open header at the flip of a switch. Maybe a power trunk release for a car that doesn't have one, or shaved door actuators on a street car? I'm sure you could also rig up something like the ending of Breaking Bad  | ||
| Musclecargod |
It sure looks expensive. It's a shame not to use it for something. I just don't know if it is continuous duty rating, and or push/pull. I've got no use right now for an exhaust cut out. The truck has a straight 5" exhaust. Can't get much louder. | ||
| Jdugger |
It's pull I know that... | ||
| Figorvonbuellingham |
So on the bike it pulls the butterfly shut? What triggers it? Kept me from flipping so I left mine on. | ||
| Jdugger |
It's an ECM thing. Not sure how much power it requires to do it's thing, but it's several pounds of force, so someone could easily do the calculation. The EMC triggers it in certain situations that are substantially similar to the EPA pass-by noise test so the bike will pass the test. | ||
| Ridenusa4l |
I believe it was supposed to activate in 3rd gear at ~4800rpm when you go from steady to WOT, its main purpose was to limit the intake volume under those conditions per EPA standards. i took it off after it almost killed me, while merging onto the free way once.... Jake | ||
| Sparky |
I, as of yesterday, took off my Active Intake Solenoid following the great tutorial here on BWB. So, I'm glad that I saved 1.6 lbs which almost offsets the 2 lbs greater mass of the Saddlemen seat from American Sport Bike. But what I really noticed today on the shakedown run was, and hopefully this is not heightened expectations, much smoother throttle response while taking up the throttle when slowly accelerating from the lower gears. I do a lot of around town riding with this bike and there has always been a lot of rough, snatchy,noisy take-up of the throttle when accelerating from a closed throttle situation in the lower gears, but now it seems like the bike has really smoothed out to, dare I say it, perfection? Am I being entirely too optimistic or what? Oh, man - this is great! I can't figure out why having the solenoid installed would result in such poor low throttle opening driveability issues. Maybe it's the added mass of the solenoid working against the spring that puts the second throttle butterfly tied to the first butterfly and it can't keep up with the operator's throttle position? There's only the opening of the throttle at low speeds where the difference lies. | ||
| Froggy |
If the solenoid cable is routed even a little bit wrong, it will bind up and create resistance that you have to fight when using the throttle. You won't notice it being connected otherwise. I still have mine connected on my R, the throttle feels 100% the same as my denoided CR. | ||
| Jdugger |
I disagree, Froggy. The 'noid adds a little bit of spring to the throttle action. It's lighter (easier) to twist it with the noid gone. | ||
| Figorvonbuellingham |
Pass a noise test eh? Works pretty good for anti flipping too. Only thing is it slams the bike to the ground so hard an quick if your not off the throttle in time it picks the front end right back up and repeats the process. Left me poggo-ing down the road. Thats what I get for trying to instigate a race with a Mustang. I bet that guy was laughing his arse off! | ||
| Sparky |
Ha ha, Fig. I'm laughing too! That's what one gets when one tries racing with an EPA shackled vehicle!  No offense tho, I think the EPA noise test in this case is pure BS because, I think. the engine makes more intake honking (and otherwise) noise when the solenoid activates than if it didn't! Agreed? | ||
| Jdugger |
> I think the EPA noise test in this case is pure BS because It's regulation something. There's no way they deliberately engineered such a contraption as a regular operating feature of the bike. It's operation is too narrow a range, and it's function too stupid to be anything other than government. | ||
| Dannybuell |
Jdugger - what do you think it is for? A governor of some sort?? After so many hours in the saddle of an 1125, do you think you could trick a solenoid bike to act up in a controlled situation? | ||
| Jdugger |
As has been documented here, the noid has a very specific and narrow function. It will only activate if you are relatively low in the revs in only 3rd gear, and you quickly whack open the throttle to full. I can deliberately trigger it by lugging the motor at full throttle in 3rd gear, yes. | ||
| Deanh8 |
Blipper motor? | ||
| Jdugger |
> Blipper You would have to be able to determine it is a servo, not just an all-or-nothing solenoid. Interesting idea, though! | ||
| Musclecargod |
I don't think it is capable of servo use, as there is no positional feedback. However, I was thinking for my application of a high idle control, one could make the high idle adjustable by using a simple pulse width modulated drive. I would imagine a similar setup would work for a blipper. Given high enough switching frequency on the drive you could set how much pull the solenoid has pretty accurately. With the other springs in the system I bet it could be adjusted pretty well. I believe this is how modern cars control idle speed anyhow, mostly to compensate for A/C compressor on/off and other dynamic loads. |
