ESE's works engine tuner

[Grumph]

I think these cranks are oil filled in some way.

The pin has quite a large reservoir which on a std Norton crank may hold about 30ml of oil.
Some aftermarket ones may hold more.

[jfn2]

Wobbly:
What is the best way to contact you? I would like to send some pictures for you to look at. I have tried to pm you but for some reason I can't get it to work. Thank you very much.

[husaberg]

Wobbly:
What is the best way to contact you? I would like to send some pictures for you to look at. I have tried to pm you but for some reason I can't get it to work. Thank you very much.

You need to post a few more posts to receive further site privileges
You can respond to his pm if he was pm's you though.
Also you can't attach images to a Pm unless they are hosted elsewhere.

[AndreasL]

Upps... I believe I just bought me self a KTM 200 SX.
A real bastard with mixed parts from all over the place.

Or if you're kind, a -06 125 with a 200 kit and upgraded suspension.
More then I can handle any way.

I have som vague memories about someone having run one in EngMod.
Not that I have any plans to modify it, but some sims could be fun.

[F5 Dave]

They wheelie nice and are quite fun. Keep the tyres sharp and don't forget to put oil in the gas. Thats it. Step away from the porting tools.

[ac3_snow]

Want to say thanks very much to Chambers and TZ from ESE who between the two of them brought 5 50's down for the F5 GP over the weekend. Wicked effort and fantastic to have so many angry little engines screaming around the track! We had 12 entries only one of which was a 4 stroke.
Cheers again for the ride

[Frits Overmars]

Looking at the above pictures I noticed that in all cases the transponder is fitted at the front fork as unsprung mass.
That is not very good for roadholding and very bad for the transponders themselves. They really don't like the shaking.

[Sketchy_Racer]

Looking at the above pictures I noticed that in all cases the transponder is fitted at the front fork as unsprung mass.
That is not very good for roadholding and very bad for the transponders themselves. They really don't like the shaking.

Have to run them low to trigger the timing loop on the kart tracks. We run them on the upper fork leg in the "big bike" classes.

[ac3_snow]

Have to run them low to trigger the timing loop on the kart tracks. We run them on the upper fork leg in the "big bike" classes.

Normally we would have them on the upper fork leg as well. For some reason that track has terrible interference, only thing we can put it down to is the airport?
Much better this time around with our own loop, but the GP wasn't the right time to start experimenting with different transponder locations.

[MotleyCrue]

Any more news on Ryger engines ? Have they shown up at any events recently ? I heard LucF was going to have update info but I skimmed through several pages in this thread and dont see anything.

[Muciek]

Nope, nothing new.

[adegnes]

Tried weighting the carb down with an old bicycle inner tube, thinking that it would provide some dampening too. Didn't help much.
Raised the bowl fuel level, no better.
Suddenly it quit firing. Pulled the plug, here's what I found:



Looks like aluminum to me.
Thought; ah crap, holed piston....but there's still compression and it fired right up again with a new plug and fuel in the tank.
Yep, stupid.

I'll pull the head to take a look at the piston, hope it hasn't shared to much of itself...

Could detonation be why it doesn't want to rev past 12-13k? It just starts sputtering with occasional pops out the carb.

[Frits Overmars]

Tried weighting the carb down with an old bicycle inner tube, thinking that it would provide some dampening too. Didn't help much.

Maybe because that old inner tube doesn't weigh much. Rubber can be used to attach two masses to each other without transmitting too much vibration, but it won't absorb vibration in itself.
Try increasing the mass of the carb by sticking on some rim balance weights. That will lower the vibration frequency.
Maybe that is what your setup needs, maybe it will worsen the problem, in which case you'll have a good clue where to look.

Could detonation be why it doesn't want to rev past 12-13k? It just starts sputtering with occasional pops out the carb.

I doubt it. Did you try the old trick of establishing whether the problem is ignition-related by narrowing the plug gap?

[wobbly]

Frits is on to it, drop the gap to 0.4mm say and try it.
What ignition is it running - and why are you running a lawnmower plug in a race engine.
Get a R7376 in there, this will be of great assistance if the CDI is marginal at high rpm/power.

[adegnes]

Maybe because that old inner tube doesn't weigh much. Rubber can be used to attach two masses to each other without transmitting too much vibration, but it won't absorb vibration in itself.
Try increasing the mass of the carb by sticking on some rim balance weights. That will lower the vibration frequency.
Maybe that is what your setup needs, maybe it will worsen the problem, in which case you'll have a good clue where to look.

I doubt it. Did you try the old trick of establishing whether the problem is ignition-related by narrowing the plug gap?

Frits is on to it, drop the gap to 0.4mm say and try it.
What ignition is it running - and why are you running a lawnmower plug in a race engine.
Get a R7376 in there, this will be of great assistance if the CDI is marginal at high rpm/power.

Ok, more weight it is!

My plug was gapped to 0.4mm...
Ignition problems seems likely, with a standard br10es it wont go past 8k.
I'm running a PowerSpark ignitionhttp://www.power-spark.de/index_en.html. They claim 30000rpm and constant ignition energy etc. but yeah, starting to doubt it.

Could be time to order an ignitech, as I probably should have in the first place, I'll see what the r7376's can do for me first.

I just aquired this ignition tester "IgnitionMate", reading through the manual atm, maybe it can shed some light on whats going on.



Thanks!