 rev limiter?
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Joined: May 2007
Posts: 10
Complete Newb
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OP
Complete Newb
Joined: May 2007
Posts: 10 |
need some info, after a hard run 6500 to 7000 rpm, when I bring it down to cruising speed, I'm getting a miss, loss of power which lasts only a few seconds maybe 45seconds. any idea's.
thanks Bill
07 speedy black and maroone, AI gone, Freak, Epco's, dynojet kit.
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 Re: rev limiter?
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Joined: Jan 2006
Posts: 3,606 Likes: 2
Loquacious
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Loquacious
Joined: Jan 2006
Posts: 3,606 Likes: 2 |
Not your rev limiter then...it will cause the bike to "skip" for a few seconds (2-3 seconds) when you hit the rpm... then as soon as you back off the throttle its right back to power I have a little strech of road that I use it for my shifting guide...and by the time I clutch/back off the throtle/and shift...it's right back to take the next gear to the limit... 
THE VOICE OF REASON
per: Stewart
AF&AM/Shriner/Scoutmaster
130/45 TBS 2shim SS Uni 18/42
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Re: rev limiter?
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Joined: May 2007
Posts: 10
Complete Newb
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OP
Complete Newb
Joined: May 2007
Posts: 10 |
maybe the jetting is the problem, back to the dealer...
07 speedy black and maroone, AI gone, Freak, Epco's, dynojet kit.
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Re: rev limiter?
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Joined: Jul 2007
Posts: 94
Member
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Member
Joined: Jul 2007
Posts: 94 |
What is the red line on the 790cc engine?
And what is the limiter set to?
Now hatred is by far the longest pleasure; men love in haste but detest at leisure.
2006 America 790cc
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Re: rev limiter?
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Joined: May 2007
Posts: 10
Complete Newb
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OP
Complete Newb
Joined: May 2007
Posts: 10 |
don't know about the 790, but the 865 shows a redline of 7500 rpm
07 speedy black and maroone, AI gone, Freak, Epco's, dynojet kit.
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Re: rev limiter?
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Joined: Sep 2006
Posts: 1,457
Learned Hand
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Learned Hand
Joined: Sep 2006
Posts: 1,457 |
Welcome, fellow Floridonian. Maybe diaphram or slide hanging up. Sometimes hard to get the thing back in the groove all the way around.
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Re: rev limiter?
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Joined: Dec 2005
Posts: 604
Adjunct
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Adjunct
Joined: Dec 2005
Posts: 604 |
>And what is the limiter set to?
I think it's 7,400 for a 790 & 7,900 for 865.
Makes no sense, but I think that's how it is.
Said Molly to James, that's a fine motorbike.
Richard Thompson
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Re: rev limiter?
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Joined: May 2007
Posts: 6,432 Likes: 1
Worn Saddle
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Worn Saddle
Joined: May 2007
Posts: 6,432 Likes: 1 |
Quote:
>And what is the limiter set to?
I think it's 7,400 for a 790 & 7,900 for 865.
Makes no sense, but I think that's how it is.
I'm willing to bet the "sense" in it comes from the cam profiles and not the durability of the motors.
A positive attitude may not solve all your problems, but it will annoy enough people to make it worth the effort. Herm Albright (1876 - 1944)
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Re: rev limiter?
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Joined: Aug 2006
Posts: 175
Adjunct
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Adjunct
Joined: Aug 2006
Posts: 175 |
Welcome to the site...
My 865 is set at 7,400 rpm...
Maby after hard running fuel level in bowls could be low due to a partialy blocked fuel filter...
05 SM Neon Blue/Black. Thunder Bike Cams & Pipes & Flowed Head. AI&Snork removed, Airbox Mods, 135mains, 42/17T, 140x80x17" TBS Front Wheel
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Re: rev limiter?
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Joined: Dec 2005
Posts: 604
Adjunct
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Adjunct
Joined: Dec 2005
Posts: 604 |
>I'm willing to bet the "sense" in it comes from the cam profiles and not the durability of the motors.
That's why it doesn't make sense (to me).
790: Aggressive cams, mild limiter.
865: Mild cams, aggressive limiter.
Seems like they are at cross purposes (from a tuner's viewpoint).
However, Mike's comment re 865/7,400 is interesting.
Update: Just checked Bike Bandit's parts listings.
They show different #s & descriptions for BA & SM "ICU".
SM says "8000 rpm".
Sorry for the hijack, but this in an interesting subject.
Seems like if you ever had to cough up the cash for a BA "igniter", (perish the thought), then you might as well get the SM part.
Last edited by rhnstn; 08/23/2007 12:13 PM.
Said Molly to James, that's a fine motorbike.
Richard Thompson
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Re: rev limiter?
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Joined: Jan 2005
Posts: 202
Adjunct
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Adjunct
Joined: Jan 2005
Posts: 202 |
Quote:
need some info, after a hard run 6500 to 7000 rpm, when I bring it down to cruising speed, I'm getting a miss, loss of power which lasts only a few seconds maybe 45seconds. any idea's.
thanks Bill
sounds like you might have splash fouled a plug......this can happen when you run up the rpm's and usually goes away rather quickly....
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Re: rev limiter?
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Joined: Apr 2007
Posts: 260
Adjunct
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Adjunct
Joined: Apr 2007
Posts: 260 |
Sometimes I miss the obvious, but I typically shift at 4k on the tach. Is this to say that I'm way under where I should be shifting? 02 TBA by the way.
Remember; no matter where you go, there you are.
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Re: rev limiter?
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Joined: Jan 2005
Posts: 3,753
Loquacious
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Loquacious
Joined: Jan 2005
Posts: 3,753 |
shifting there is fine, but all the power is from there to 7k
Frank
(Former)05 BA tbike pipes, ai removed, Freak, mikuni hsr 42's, 904, ported/polished head, 1mm oversized valves
NOW-2010 silver and black tbird
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Re: rev limiter?
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Joined: Apr 2007
Posts: 260
Adjunct
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Adjunct
Joined: Apr 2007
Posts: 260 |
Gotcha, thanks. I'l do some experimenting to find the sweet spot.
Remember; no matter where you go, there you are.
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Re: rev limiter?
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Joined: Jul 2007
Posts: 94
Member
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Member
Joined: Jul 2007
Posts: 94 |
With a 16t sprocket, I am usually running 5k @80mph, so I was worried about running out of engine. Needless to say I lost 40 miles per tank when making the switch from the 17t to the 16t. Caught me off guard in the middle of the road last night when I barely hit 100 miles from a full tank before having to switch to reserve.
Now hatred is by far the longest pleasure; men love in haste but detest at leisure.
2006 America 790cc
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