ESE's works engine tuner

[TZ350]

These two 50's, ran midfield in A grade, a very good effort.



There were other 50's in B grade, I am working on a 50 of my own for B grade, its a great class.



FarmerKen getting his boys started early.



Fuel Injected 2T, didn't run that well, started easy and flew on full throttle but I just couldn't get it to come back onto the throttle properly after shutting off. I wanted to be the first person to race a fuel injected 2T in Buckets, well maybe next time.

[adegnes]

Heres a quick update on my 50cc wierdo french build.

I've ditched the original spring loaded pivoting engine mount.
The engine is now stationary (can slide sideways to align the pulleys while variating), and I've fabricated a roller tensioning system to keep tension on the belt, it also has a foot pedal to fine tune on the fly.

The relief grooves for the disc was cut on a homemade dremel jig in my drill press - worked great.

[adegnes]

Reworked crankcase - intake aimed just a few deegrees up, and a pic of the cylinder, notice the chipped nikasil - might destroy itself pretty fast, we'll see.

[TZ350]

Lap record breaker and winner of the first A grade race, Kawasaki KE125 farmbike engine.



Wills TF125 Suzuki farmbike engined rocket, this bike ran at the very sharp end of A grade gaining several placings.



MB100 with an interesting mid mount exhaust stinger, works well, very quiet.



Aprilia rolling chassis with a Suzuki TF125 farm bike engine.

[TZ350]

TZ125 chassis with Aprilia 70 motor, a very business like package.



H2O RGV100, very nice.

There were also a lot of very well developed 4T's mostly based on the FXR150 commuter bike.

[F5 Dave]

Timing became very unreliable sadly so it would be hard to verify if of was a lap record. I supposedly almost equaled it on the 50. Unlikely seeing the way the fast bikes blew me out of the way at the end of the straight. If you choose tobelieve the times Will supposedly went 2.5 seconds quicker. But I can't deny the pace was fast and Kel was likely quickest on the day.

[ken seeber]

Heres a quick update on my 50cc wierdo french build.

I've ditched the original spring loaded pivoting engine mount.
The engine is now stationary (can slide sideways to align the pulleys while variating), and I've fabricated a roller tensioning system to keep tension on the belt, it also has a foot pedal to fine tune on the fly.

The relief grooves for the disc was cut on a homemade dremel jig in my drill press - worked great.

Adegnes,

Neat pics and lots of thought. Well done. One question: With a downward facing cylinder, do you ever have problems with oil, under that gravity, accumulating in the head and oiling up the plug?"
Thanks. Ken.

[adegnes]

Adegnes,

Neat pics and lots of thought. Well done. One question: With a downward facing cylinder, do you ever have problems with oil, under that gravity, accumulating in the head and oiling up the plug?"
Thanks. Ken.

Thanks!
That might become an issue, this is my first upside-down engine, so I have no experience with it yet.

[TZ350]

Timing became very unreliable sadly so it would be hard to verify if it was a lap record.

I think you are right, but a good day never the less, I got to see lots of great people and I met some new faces to. A great meeting all in all. And you were right about that good Thai Restaurant, thanks.

[F5 Dave]

. . . .and putting up your tent?

[TZ350]

It was she who must be obeyed-es idea to tent and had brought one unseen of Trademe.



I could imagine how it was going to go.



And I just knew it would be out to get me.

. . . .and putting up your tent?

So I was very very grateful that you were able to subdue it. Thanks.

[Yow Ling]

Heres a quick update on my 50cc wierdo french build.

I've ditched the original spring loaded pivoting engine mount.
The engine is now stationary (can slide sideways to align the pulleys while variating), and I've fabricated a roller tensioning system to keep tension on the belt, it also has a foot pedal to fine tune on the fly.

The relief grooves for the disc was cut on a homemade dremel jig in my drill press - worked great.

Wow score 12 out of 10 for the milling attachment. I think this configuration of the CVT may be the best for buckets, keep posting stuff please

[190mech]

(Quote) Adegnes,

Neat pics and lots of thought. Well done. One question: With a downward facing cylinder, do you ever have problems with oil, under that gravity, accumulating in the head and oiling up the plug?"
Thanks. Ken.



Lots of light experimental aircraft have used the 'plugs down' setup with good results.The Avid Flyer used a Rotax 532 or 582 in an upside down configuration without any more issues than a 'right side up' set up..

[adegnes]

Wow score 12 out of 10 for the milling attachment. I think this configuration of the CVT may be the best for buckets, keep posting stuff please

Thanks!
It has one big disadvantage though; shorter range - hard on the clutch if you want good take offs and top speed.
I'll keep posting!

Lots of light experimental aircraft have used the 'plugs down' setup with good results.The Avid Flyer used a Rotax 532 or 582 in an upside down configuration without any more issues than a 'right side up' set up..

Thats reassuring to know, thanks!

[Frits Overmars]

Wow score 12 out of 10 for the milling attachment. I think this configuration of the CVT may be the best for buckets.

It has one big disadvantage though; shorter range - hard on the clutch if you want good take offs and top speed.

Yes, the work is delightful. But using one variable and one fixed pully will give you only half the range that you could have with both pullies variable.

I've ditched the original spring loaded pivoting engine mount. The engine is now stationary (can slide sideways to align the pulleys while variating), and I've fabricated a roller tensioning system to keep tension on the belt

If you choose to stick with one variable and one fixed pully, ditching the pivoting engine mount is a good idea. And I like the tensioner. But I have my doubts about the sideways sliding engine. It will take some force to make it slide, which means the belt will hardly ever run perpendicular to the shafts. Wouldn't it be even simpler to mount the engine completely unmovable and have the secundary pully sliding sideways on its shaft? That would also avoid the need for a flexible exhaust pipe mounting.

EDIT: taking this thought a bit further: why not make one sheave of the secundary pully slide on splines, spring-loaded, and the other one fixed to the shaft?