the end of my tether is in sight - won't rev

[Gerrit]

he he I am not with you on the 'bad back" ? ..Do tell ?

[benny hedges]

well it must be your really bad cough then, or the chronic dysentry you picked up....
you don't want it to spread round the office...
who's side are you on ffs, i'm trying to get you a day off!

[marlbororman]

well it must be your really bad cough then, or the chronic dysentry you picked up....
you don't want it to spread round the office...
who's side are you on ffs, i'm trying to get you a day off!

took me a bit to get it too

[sirch345]

It must be something to do with our ages Benny, as a bad back used to be one of the oldest tricks in the book for time off work

I think putting your bike on a dyno Gerrit is a good move. Do keep us posted

Chris.

[Phil-VTwin]

Well yes the IPG *could* be the cause, if the wiring has got wet or broken somewhere the ICM could be picking up a ghost signal and counting the pulses twice, so instead of 175 pulses per second for 5,250 rpm its counting 350 and thinks the engine is at 10,500!

An oscilloscope would confirm if the signal is clean or not.

[benny hedges]

phil what if a diode in the icm had popped when the r/r went, it would pick up a pulse in & out instead of a smoothed signal wouldn't it, giving the 2x reading and 5250rpm limit?
is there an easy way to disable the limiter....

[marlbororman]

is there an easy way to disable the limiter....

I know wot your thinking

[silversixx]

Was up 'til late last night nailing on a pair of carbs (complete with tps) leant to me by my friendly breaker.

Encouragingly, it fired straight up, and once it was warm I wound on some throttle..............it was almost exactly the same. I say 'almost' because with the original carbs the problems started at around 3,500 rpm and the motor wouldn't quite pull 5,000. With the replacement carbs fitted the symptoms are identical but it will almost pull 6,000 rpm now.

Tired, fed-up, skint, nursing a screaming headache, and seriously running low on humour!

As far as I can tell, my only option now is to systematically replace every electrical component on the bike - starting with the cdi - and this clearly isn't an option.

Anybody need any Firestorm parts?

[Gerrit]

Hi Silver, know how u feel, on Sunday after the bike was put together I gave it a wash, and took a ride to the shops, this 5000rpm is quite kewl, it is safer and I won't get speedfines :) ......Just leave the bike for a few days and chill...

This morning I got a nifty device at the spares shop, Attach one end to the spark plug, the other end to the coil wire, and it will show the size of the spark as the motor runs, and hopefully at 5000rpm, I will be able to see for myself if the spark reduces or whatever...I hope it works as it says on the box :)

Regards,
Gerrit

[silversixx]

Hi Gerrit!

Having spent two whole weeks "chilling out" whilst the bike was with my mechanic (at not inconsiderable cost I might add), I can afford to do no more! I'm now missing out on work because I don't have a vehicle to get me there. After this week I have no back-up vehicle so it's looking like the bike either gets binned, parted out, or whatever.

Love the bike, and have loved riding it, but totally sick of the sight of it now. Have invested so much time, money and effort...

[Gerrit]

I measured my TPS again tonite.

610ohms at closed throttle, going up to 1480 at 3/4 throttle and then it starts to drop to 1387 at full open throttle.

With the ignition ON, I get 887 at closed throttle, but opening the the throttle ever so slightly it moves to 1987, and off the scale indicating a 1 on the multimeter...I have not reached 1/4 throttle at this stage.

I traced the 2 TPS wires to the ICModule, and removed the plug to take a reading on the 2 wires.

I read at closed throttle .62 and it goes all the way to 4.89, and with the ignition ON, I get the same reading here.

Moving back to the TPS with the ICM plug still removed I now get .62 all the way to 4.89

It seems thus that with the readings at the ICM .62 to 4.89, that the ICM is getting the correct signal.

Your thoughts?

Gerrit

[Gerrit]

Can too much oil cause the problem?

I know with the race car, with too much oil, the lifters pump up, and the engine will not rev as smooth as it should.

I noticed tonite that my oil level on the bike is way too high, I changed oil & filter a day or two before my problem surfaced, and tonite I drained off quite a bit of oil, to get the level back to the centre of the 2 lines on the glass viewer.

Gerrit

[benny hedges]

it's definately another simple thing to rule out.
just keep picking away at it bud, make a note of any improvements - might be helpfull to others as well as yourself

[Gerrit]

Took a ride on the bike to Kyalami today to watch some mates race.

In 5th at 5000rpm, I can do 140kmh, nice cruising speed, and safe , and no speed fines.

Sometime - somehow a solution to this 5000rpm rev limiter will surface.

Gerrit

[Gerrit]

Another strange anomaly guys.

I been usingthe bike the past week, it is rideabe up to 5000rpm.

I noticed that every time the ingnition is on/off, the trip meter is reset?

Strange....is this beginning to sound like my problem could be ICM related?

And where do a source a replacemnt ICM?

Regards,
Gerrit