Triumphrat

CAPTDON

Rev limiter has been a pain in the past 1 up doable tho My nephew here last week 2 up Limiter was say LIMITING?
Someone did a post off a chip? or ? to increase to 8400 rpm
Would do the trick Anyone remember it??? Capt D :???:

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CAPT D

dazco

there are lots of posts on the subject here and elsewhere. the jist of it is that there are only 2 possibilities to up the limiter. one is Jojje who lives in sweden and will only do it for europeans because of legal reasons. So being in the U.S. you're out of luck there. the second is a company that has been developing a new bladck box to replace the stock one. They can be found on ebay now and then. But the problem is that they are in the middle of developing them and they are not yet perfected. Those who've bought them have reported many problems. So that is also not really an option at least till they perfect them, assuming they ever do. selling them before they work right is bad business and i'm not sure i'd trust a company that does that in the 1st place.

If you want more info on these flawed boxes go to th NTBForum and theres a post about them. But it's really a waste because they don't yet work right so why bother. So when it comes down to it, there aren't any real options at the moment.

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FattRat

It could be too early to talk about it....... but I've put about 200 miles on one of those boxes via ebay. It arrived the evening of the 11th, and I put 50 miles on it that night with nary a glitch.
(REALLY nice not to have that 7400 rpm limiter kick in and get the way.)

I took it out for another 50 miles the following day, and got brave..... I stopped and ran a couple errands, coming back out to the bike with the hope that it'll fire up. It did, both times.
(There have been stories about the box not working on a cold start up, and not firing the bike up on a warm start.)

Then I took it out and put it through it's paces under a variety of conditions to include 'round town and high speed sprints. 90 miles and a gas stop later, it delivered 45 mpg where I normally get no better than 40 mpg.

The bike seems to run smoother, feels almost too mellow beneath me, but what a kick to spin her up beyond the customary 7400 rpm.

--- "...almost too mellow..." ---

I'm not complaining..... too early to come to any conclusions, but here's what I've observed so far:
*The exhaust has popped upon fire-up a couple times. I don't remember that happening often before the ignition install.
*The engine dieseled on me at the gas pump after my 90 mile ride, THAT has never happened before.
*I have gotten 45 mpg once before, but the bike normally delivers me 40 mpg. Surprisingly, the 45 mpg ride had some hard accelerations, 85+ mph runs, and some 60 to 70 mph behave'n up & down some local foothills.
*But there is something about the engine that seems to have been emasculated. Thus my statement about it being 'almost too mellow.....' I don't know what to make of it, the engine spins up nicely at high rpm, and runs smoothly around town, but it's like it's on Prozac or some'n.....

Make of all this what you may, it's still too early to say one way or the other. But of one thing I'm certain..... The new Bonnie's with the rev' limiter set at 8,000 rpm would be just about perfect. These engines aren't producing any more horsepower beyond the (my guestimated) 7600 rpm, and they sure as hell ain't creating any additional torque.....
But it's nice when you're passing a truck, when suddenly a car is coming from the opposite direction (seemingly from outa nowhere), and you DON'T stumble upon that damnedable rev' limiter.

[ This message was edited by: FattRat on 2006-01-14 18:59 ]

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RedBird

Pat,

My guess is that the timing advance curve is a little different on your new igniter "box" from your description. I have a Jojje modified igniter and bonnie runs exactly like before except the rev limiter is now at 8100 rpm. Hp peaks at 7800 on mine and drops about 2 hp at 8100 on the dyno. Lots of fun. :-D :-D

Larry

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Larry
2003 T-100 (790cc), NARK, NH Togas, 8100 rpm rev limiter, 158 main jets, 42 pilot jets (less than 1 turn out on pilot screws), stock needles--no shims. 13 A/F ratio from 1100 rpm to 4000 rpm; 12 A/F ratio from 4000 rpm to 6000 rpm; 13 A/F from 6000 rpm to 8100 rpm.:D
2007 Tiger 1050--White:D--SW-Motech crashbars, Skidmarx rear hugger/chain guard, Calsci +7 windscreen.

jojje1963

Sounds like you might have less timing advance now, that would make the bike behave like you say it does (not sure about the better fuel consumption though)

DickBender

jojje,
Do you do the igniter mod for Aussies?

Darcy

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agro

Hey Don, you could always get a Thruxton module; cuts out @ 8.2-8.3k rpms indicated.

Cheers......Agro

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rodburner

Agro,I thought the Thrux module was frowned upon because of the different cam profile/timing curve? :???:

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agro

Should not matter timing advance might be a few deg different from the 790 module ie. less advance.

Probably need to check with Jojje for the differences in curves.

I will be fitting Bonney cams to my Thruxton soon, then the only difference to a 790 will be the Capacity, 865, and the Thruxton module

Cheers...............Agro

[ This message was edited by: agro on 2006-01-15 09:03 ]

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jojje1963

Yes, send me a mail jojje.lindskog@swipnet.se