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[bakon]

Guess I should say stage 1, 110 CVO rev limit?

Vance and Hines Headpipes and a SE Super Tuner Pro download.....checked the TUNING SET UP and found rpm limit set at 5900 for 617SEP204-01, which is just the Stage 1 tune for 110 motor.
I remember Stage 1 on the old 88 raised rpm limit to 6200 from 5900.

SO I play for a minute with bike and two tunes, just changing rpm limit to 6200...I start bike and check the results with live data and displaying rpm as a meter for more accurate reading... and at 5900 rpm limit I only get 5500 rpm out of bike, which is right at redline on the tach.  Change up to 6200 on tune, upload, run bike and I get 5900 rpm out of bike and slightly into the redline area of tach...

Anyone see this, know why or think the 110 shouldn't rev to the old 88 or 95 stage 1 limit?
Set bike back to 5900 for now...

[mike jesse]

So....what are you trying to accomplish?

[HILLSIDECYCLE.COM]

Rpm limit is dictated verse and scripture, by the engines "ability" to do so.
Scott

[Dr.D]

I thought in general larger pistons need less rpm and safety is decreased if you try to over rev. It would need a different cam than the 255 to even make sense to rev that high.

Mike Jesse's question is the right one to ask.

[zigscvobo]

You will never be there.

[HILLSIDECYCLE.COM]

And as already mentioned, the school-bus cam won't take you anywhere near the engine's factory redline.
Scott

[bakon]

Ok if the cam is the limiting item...why doesn't both settings (5900 & 6200) at least get 5900? One only gets to 5500. I have been able to hit limiter at 5900 or 6200 on stock bikes.

The point of the exercise was to raise the rev limit to 6200 and not bang the rev limiter in lower gears (1, 2 or 3) as early. Not racing on track, but got to pound on the buddies with this big bagger. If I hit limiter at 5500, when I might shift at 5700, there is a one or two second pause in action where the 88 or 95 could be creeping by still in power (although not at top of torque its still moving somewhere instead of pulsing on the limiter.) Idea is not hit limiter at all, but it happens when over doing it. Yes a shift would be better, but that's only when the whole brain is turned on and the smile isn't blocking half of it from working...

Now ask how often I hit the limiter, never on this one yet, breaking it in. On 95 HTCC CNC build with Woods 408 g cam, a lot. On 103 with 57H cam, sometimes.

[Phantom309]

No offense, but there's no reason to rev these things to the moon ... they're not crotch rockets and don't make anymore power up that high without some major mods. The canned map from my FP3 had mine set at 6200 so I lowered it to 5500, I see no reason to ever turn mine that fast with just exhaust. I want my engine to live a long healthy life. If I ever get the itch to rev any higher I have an old GS 1100 I can turn to 9000 and not worry.

[Dr.D]

If I hit limiter at 5500, when I might shift at 5700, there is a one or two second pause in action where the 88 or 95 could be creeping by still in power (although not at top of torque its still moving somewhere instead of pulsing on the limiter.) Idea is not hit limiter at all, but it happens when over doing it.

I can understand this as a valid reason. I hate hitting the limiter for two reasons, 1 it sounds bad and 2 you loose to much momentum. Yes should have shifted but torque fall off is better than the total cut off of the limiter. Also it is bakon's bike if he wants to rev it to the moon then that should be his choice even if it is pointless to most of us or even damaging to his equipment. it is all about choice.

I do not have the answers to your questions sorry, just support for your right to ask them.

[RonandJanet]

I can understand this as a valid reason. I hate hitting the limiter for two reasons, 1 it sounds bad and 2 you loose to much momentum. Yes should have shifted but torque fall off is better than the total cut off of the limiter. Also it is bakon's bike if he wants to rev it to the moon then that should be his choice even if it is pointless to most of us or even damaging to his equipment. it is all about choice.

I do not have the answers to your questions sorry, just support for your right to ask them.

I agree - I don't like it either.

[bakon]

I know there would be someone tell me how I am hurting it, or should have shifted earlier...its the nature of forums where opinions usually outnumber actual knowledge. Not saying anyone doesn't know what they are saying...I am saying nobody can tell me why the bike shuts off before the rev limit programmed into it...

I agree there is no reason to rev that high on a couch with wheels, also agree cam is not in power at those numbers, but a stock cam can hit the rev limiter, why cant this one or is there another piece of logic in there somewhere which overrides the programmed number?

[FlaHeatWave]

Steve Cole would be the one to answer the question, he's in the TTS Support section here

[mike jesse]

A quality valve spring might help you get to your goal. maybe yours are tired and will not allow the engine to rev higher.

[bakon]

doubt it...two reasons, bike has 900 miles and worn springs would be weaker, thus reving easier...
unless you believe a worn spring is holding open longer and bleeding off compression?

my opinion, and only that, there is a programming in there which only allows the rev limit at certain speed per gear???siting in garage in neutral the ecm would let it get within 200 rpm of set limit, two settings with same result, got to be programming and sensors...

[Dan_Lockwood]

siting in garage in neutral the ecm would let it get within 200 rpm of set limit, two settings with same result, got to be programming and sensors...

Am I to understand that in the garage, motor running, in neutral, you're free revving the motor to see if you can hit the rev limiter?

I hope that's not what I get from your comment, I must have read it wrong.