New and improved KTM690 WUNDERFEST

[blakrj]

Originally Posted by bobzilla

anybody got a wiring diagram? im getting 12 vdc at the coil when you turn the key on but it goes away once the fuel pump cycles.
relay maybe? interlock? it would sure help to have a wiring diagram

good news is my berg is back together and makes me smile. i think the 690 is going bye bye when i get it fixed and ill build something to do the long dirt tours with no electronics and oil cooled, strong subframe to carry luggage with top of the line suspension

Have a look here

[crankshaft]

Originally Posted by andykeck

Hey, please post back if you hear anything about a new flash from Richard.

I had been having difficult starting back mid-winter, temps in the upper 30s or low 40s. It would take several presses of the button before it caught. Now with warmer weather, it always catches on the second press, but never ever the first press. I did a little experimentation with the injector in a bucket and found that the Vortex seems to only spray fuel once per ignition attempt. So if you don't fire on that first compression stroke, my guess is you're not gonna given that there's not going to be any more fuel sprays that start attempt.

I also found that after the fuel pump primes, pressure spikes at the correct mid-50 psi value, but then bleeds off over a few seconds (is this right?). This could also cause a start problem with the Vortex, if you only get one spray of fuel, and it comes after the pressure has bled down, you could end up without enough fuel to do anything good.

Disclaimer: I pulled this all out of my ass. The bleed off of fuel pressure may or may not be correct behavior, so my experience could be completely different.

Keep it simple...... the amount of fuel squirted into the intake at cold start is adjusted by changing the duration of time the injector is open or pulsed.
That time is usually adjusted by the coolant temperature. Pretty simple eh

[bobzilla]

Originally Posted by blakrj

Have a look here

\

THANKS
now i just need to figger it out
screw it im just going to put 12 vdc to the coil

[andykeck]

Originally Posted by crankshaft

Keep it simple...... the amount of fuel squirted into the intake at cold start is adjusted by changing the duration of time the injector is open or pulsed.
That time is usually adjusted by the coolant temperature. Pretty simple eh

Well, that's why I'm wondering if my regulator is not acting the way it should. If I let the fuel pump prime, then screw with my gloves or something for a few second, fuel pressure in the line is down to 20 psi or less. Might make that first squirt weaker than desired if the ECU is expecting 55 psi.

[Seth S]

Originally Posted by andykeck

Well, that's why I'm wondering if my regulator is not acting the way it should. If I let the fuel pump prime, then screw with my gloves or something for a few second, fuel pressure in the line is down to 20 psi or less. Might make that first squirt weaker than desired if the ECU is expecting 55 psi.

Fuel regulators can certainely fail and usually fail in the form of dumping too much pressure.

[bobzilla]

Originally Posted by crankshaft

I hate giving up Would be nice to actually turn the 690 into a bomb proof platform, just to shove it up KTM's ass

Maybe your right Aaron, the 690 with a carb could be my perfect beast
anybody remember who did the carb conversion?

[crankshaft]

Originally Posted by bobzilla

Maybe your right Aaron, the 690 with a carb could be my perfect beast
anybody remember who did the carb conversion?

Can't be that difficult, just need to adapt a FCR39 to the throat of the head and then clamp a pod filter to the other end. You'll need a vacuum pump of course, but they're well known for reliability.

[crankshaft]

Originally Posted by andykeck

Well, that's why I'm wondering if my regulator is not acting the way it should. If I let the fuel pump prime, then screw with my gloves or something for a few second, fuel pressure in the line is down to 20 psi or less. Might make that first squirt weaker than desired if the ECU is expecting 55 psi.

Or your injector is leaking...

[andykeck]

Originally Posted by crankshaft

Or your injector is leaking...

Nope, not leaking at the injector. If it's leaking anywhere at all, it would have to be at one of the fittings inside the tank, but I strongly doubt that's what's happening. I'm nearly certain that the regulator bleeds off the pressure when the pump's not running. I can't find anyone to confirm or deny if that's the expected behavior or not.

[Seth S]

Originally Posted by andykeck

Nope, not leaking at the injector. If it's leaking anywhere at all, it would have to be at one of the fittings inside the tank, but I strongly doubt that's what's happening. I'm nearly certain that the regulator bleeds off the pressure when the pump's not running. I can't find anyone to confirm or deny if that's the expected behavior or not.

In a car you have a fuel pressure regulator and a fuel check valve. The pressure regulator should limit the max pressure while the bike is running and should not bleed off pressure when it is not running. The check valve on the car is there to prevent fuel from running back to the tank which reduces the cranking time the next time you start the car. I do not know if the 690 has a check valve.

[Ryman]

[bobzilla]

Originally Posted by crankshaft

Can't be that difficult, just need to adapt a FCR39 to the throat of the head and then clamp a pod filter to the other end. You'll need a vacuum pump of course, but they're well known for reliability.

got the adapter part figgured. i got a lathe
i used the pod filter in the past and the area on the 690 it sits in is VERY dirty. I mean every day the filter is clogged out here in the dust even if you are in front. i would rather try and route it back into the stock box or if not at least to the very front of the compartment where you are talking of putting the small battery
vacum pump very relliable
i think i need a different ignation probably from an exc
why the fcr 39 and not the 41
i could probably loose 3/4 of the wire loom too
that could be the ticket

[Barman]

Originally Posted by bobzilla

got the adapter part figgured. i got a lathe
i used the pod filter in the past and the area on the 690 it sits in is VERY dirty. I mean every day the filter is clogged out here in the dust even if you are in front. i would rather try and route it back into the stock box or if not at least to the very front of the compartment where you are talking of putting the small battery
vacum pump very relliable
i think i need a different ignation probably from an exc
why the fcr 39 and not the 41
i could probably loose 3/4 of the wire loom too
that could be the ticket

http://173.74.246.25/munnracing/cata...TORY%20REPLICA
http://173.74.246.25/munnracing/cata...TORY%20REPLICA

Warm up that credit card Bob.

[motoged]

BobZ,
Don't give up on that moody bike yet....we don't want to lose you from this thread .
Ken Darvin is a local guy that used to have a bike shop and did some 950 carb conversions....don't know if he has some insight....Lord knows, he has his opinions

Ken Darvin at Alternate Cycle (not a shop anymore ) http://www.alternatecycle.com

Tell him Ged gave you the #....he won't know who " Kitty Milker" is

[crankshaft]

Originally Posted by bobzilla

got the adapter part figgured. i got a lathe
i used the pod filter in the past and the area on the 690 it sits in is VERY dirty. I mean every day the filter is clogged out here in the dust even if you are in front. i would rather try and route it back into the stock box or if not at least to the very front of the compartment where you are talking of putting the small battery
vacum pump very relliable
i think i need a different ignation probably from an exc
why the fcr 39 and not the 41
i could probably loose 3/4 of the wire loom too
that could be the ticket

I bet Vortex could do an ignition only box for you without too much trouble. I'm wondering if the EXC CDI map would work with the 690 motor, trying to think of why of why it wouldn't work.... I got nothing