[Technique] Réalisations de Maarten JANSSENS

Nombre de messages : 30 Localisation : paris Date d'inscription : 20/11/2010

Hi Maarten,

Nice job, one more time.
I will be there also in Croix, at least I hope :-) The bike is almost ready, need a painting like you.
See you

Jérôme #199

Sujet: Re: [Technique] Réalisations de Maarten JANSSENS Dim 29 Mar 2015 - 19:20

electron a écrit:: Hi Maarten,

Nice job, one more time.
I will be there also in Croix, at least I hope :-) The bike is almost ready, need a painting like you.
See you

Jérôme #199

Mine needs much more then paint but almost no time. Look forward to seeiing you at croix!

and here's the paint!

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What happened to you this WE (Croix-en-Ternois) ? 2 DNF...

It She is really beautiful
Nice integration of the fairing / swingarm [Technique] Réalisations de Maarten JANSSENS - Page 11 771973

Buell-LN a écrit:: What happened to you this WE (Croix-en-Ternois) ? 2 DNF...

very bad weekend.

Q1 made a wrong gearing choice, Q2 was wet.

R1 I used op all of the tyre (old tyre) by lap 8 and after a few small highsider I had to pull into the pits or I would have ended with a crash

R2 my TPS sensor failed in lap 1...only worked on 100% throttle and that was not rideable... [Technique] Réalisations de Maarten JANSSENS - Page 11 584741

[Technique] Réalisations de Maarten JANSSENS - Page 11 584741

first time DNF and it came in 2.

Better luck next time!

MJ-Works a écrit:: ...my TPS sensor failed in lap 1...

Vibrations speedometer ?

throttle position sensor (TPS) Wink

Je lui demandais si la cause ne venait pas des vibrations du bloc-compteur. J'ai eu les mêmes soucis lorsque je l'ai changé d'emplacement sur un support pas assez rigide.

Le TPS est fixé sur l'axe du corps d'injection, donc je ne vois pas la connexion avec le bloc-compteur...

I have been working on the injection system for days now and still won't work. Please help if you can?

The bike has the keihin "elektronic power throttle (EPT)"

There is 1 TPS on the right hand side of the bike that is connected with the throttle grip.
There is 1 TPS on the left side of the bike that is connected with the butterfly valve of the injection.

BOTH have to be set in between 0.7 and 0.74 V via a long procedure. I do the procedure correctly and I get the values correct. They stay correct if I open and close the throttle 10x.

Problem: every time I Start the bike or turn ignition on/off the value of the left TPS jumps back to +/- 0.66 Sad

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I have opened the throttle body and there is a little play on the gears that connect elektric motor and butterfly valve but if that would be the cause then I don't understand that it does stay ok if I don't start or turn ignition on/of.

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If I can't fix this I can't ride the bike in the next race Sad

Nombre de messages : 728 Localisation : Par ici Date d'inscription : 29/09/2012

Is the bike running well, even with this 0.66V ???

Try making the settings by pushing the throttle plate, so it is really in its 0 position.

What append if you make the setting at 0.74 or 0.75V? Will it return to 0.7 after starting?

Angelo

Polux rsv a écrit:: Is the bike running well, even with this 0.66V ???

Try making the settings by pushing the throttle plate, so it is really in its 0 position.

What append if you make the setting at 0.74 or 0.75V? Will it return to 0.7 after starting?

Angelo

No its not running well. That's the problem Wink

I did put the setting by pusching the throttle plate.

first zero it by pushing it shut (0.5 --> 0.54 V)
then release it and adjust with setting screw until it reaches 0.7 --> 0.74 V. Checked when pushed closed, still 0.5 --> 0.54 V
then as the last step put other tps (throttle grip) on 0.7 --> 0.74 V.

Evertrhing stays ok UNTIL you start, then the one from the butterfly valve jumps to 0.66 V

if I then adjust it with the screw the other one goes to about 0.90 V and if I put that back to 0.72 V the one from the butterfly jumps back tot this 0.66 V...GRRR So I can keep doing that until the setscrew is completely in but it is no good...allways jumps back to 0.66 V

Nombre de messages : 728 Localisation : Par ici Date d'inscription : 29/09/2012

How do you made the cabling to these pots ?
All these wires SHOULD come directly from the ECU. Groud should not be connected to any other point or any other component.
Check the 5 volt quality going to the pots.

Angelo

Polux rsv a écrit:: How do you made the cabling to these pots ?
All these wires SHOULD come directly from the ECU. Groud should not be connected to any other point or any other component.
Check the 5 volt quality going to the pots.

Angelo

I'll check, but it has allways worked just fine until last race on croix...

I'd actually like to throw of the elektronic valve but don't know if that's possible?

Does the ECU use the two TPS to position the butterfly wrt to the grip? Or is it just a safety check to make sure the ride-by-wire system is operating?

Of course you could make a drum and run a cable, but I'd guess you'd need to then replace the ECU with an ignitech or similar. In the long run, that might turn out to be a good solution.

This all sounds far too complicated to me. A drum and a cable ! whatever next. A carb?
Like the works Dakar 690's. The self generating MX ignition we used at Croix got us on the front
row. Not a computer in site. Just put fuel in crash, repair and go again. The clever stuff can be left
to the keyboard warriors.

Dave Pearce a écrit:: This all sounds far too complicated to me. A drum and a cable ! whatever next. A carb?
Like the works Dakar 690's. The self generating MX ignition we used at Croix got us on the front
row. Not a computer in site. Just put fuel in crash, repair and go again. The clever stuff can be left
to the keyboard warriors.

What do you use exactly? Should have talked to you at croix...sorry

Update:

Found the problem by using the power of deduction...I did everything from checking sensors, flywheel position, switching throttle bodies to complete rebuilt of the wiring loom.

What was the problem? --> a completely cloged injector... grrr [Technique] Réalisations de Maarten JANSSENS - Page 11 614236

[Technique] Réalisations de Maarten JANSSENS - Page 11 614236

before cleaning:

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what came out:

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after cleaning:

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Bike seems to have a lot more power and is running great. Went to test on circuit zolder for the first time a few weeks ago and after 3 sessions I had the same problems. Cleaned the injector again and everything was ok again. So I'm going to put in a Golan prp mini filter right in front of the injector.

As I'm writing this this is being made:

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After ALL the pipes that I've made, a twin megaphone still was the best for power.
So I'm going back to the twin megaphone setup lol!

Working on the moto2 bike this week, really need to finish that thing so we can get testing!!

Have been working A LOT in the house and in the garden with a self made automatic gate etc...

GRTZ

MJ

Huh!!! Great that you found out where you issue is, but you'd better find where do this dirt come from, now!
If you had dirt in you injection system after remounting it one day, it would have been solved after you cleaned it, but if he had his teeth full back after only three sessions, you really have another issue somewhere in injection system.
Some dirt in the tank? Inside tank paint or protection covering melting or getting old?

crazytoon a écrit:: Huh!!! Great that you found out where you issue is, but you'd better find where do this dirt come from, now!
If you had dirt in you injection system after remounting it one day, it would have been solved after you cleaned it, but if he had his teeth full back after only three sessions, you really have another issue somewhere in injection system.
Some dirt in the tank? Inside tank paint or protection covering melting or getting old?

I know, was thinking about the 3 year old explosafe or something. Wouldn't know what else.
But fact of the matter is that is seems to clog the injector very fast now...

First and easier would be to empty your fuel tank and replace the explosafe after a big scrub, isn't it?
Empting it should show dirt gasoline, already... Good luck Wink

Normally, the filter in the fuel pump should stop any dirt in the tank: I've had a couple of "injector failures" that turned out to be due to reduced pump flow due to clogged filters, but nothing has gone through to the injector itself. Maybe KTM pumps have less efficient filters than Suzuki?

The stories of clogged injectors I've seen have usually been from the USA, where people run exotic race fuels that congeal into gum if left a few days.

Jelly US fuel???? :DDD

GrahamB a écrit:: Normally, the filter in the fuel pump should stop any dirt in the tank: I've had a couple of "injector failures" that turned out to be due to reduced pump flow due to clogged filters, but nothing has gone through to the injector itself. Maybe KTM pumps have less efficient filters than Suzuki?

The stories of clogged injectors I've seen have usually been from the USA, where people run exotic race fuels that congeal into gum if left a few days.

I allways use shell V-power...nothing special

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