ESE's works engine tuner

[wobbly]

Hey TeeZee, that piston is for sure incorrectly heat treated - its faulty,take it back and demand a replacement from a different supplier or batch at the very least.
And part of the issue could be the ring width - how wide are they, and you dont need two of them bashing up and down in the ring grooves now you are reving to 13000.

Im not allowed to say whos cylinder it is Frits, this is a rapid prototyped casting as you can see by the layering marks - but it does have a two stage blade powervalve ( now ) and I "unfixed" the fixups originally departing from Jans good work.

[TZ350]

Hey TeeZee, that piston is for sure incorrectly heat treated - its faulty,take it back and demand a replacement from a different supplier or batch at the very least.
And part of the issue could be the ring width - how wide are they, and you dont need two of them bashing up and down in the ring grooves now you are reving to 13000.

The piston was in Ned Kellys bike, ring width 0.95mm, and not sure where it came from originaly as in true Bucket fashion we ratted it out of a box of oddments in the shed. Its now been replaced with a new Weisco forged piston.

[TZ350]

Wobbly put me onto this TPS, I think its from a Aprilia RS250, throttle cable, two carburettor cables and an oil pump cable what the fourth one is for I have no ideas.





This is going to be my new TPS (throttle position sensor) to go with the ignitech and new taper bored 24mm carb, finaly starting to get all the bits together to make a decent engine management system.

[TZ350]

Received my new pipe "kit set" from Wobbly today, 30++ hp hopefully with a bit of overreve.



Not sure of the order but it makes a nice fossil fish like picture.

Anyway it will keep Bucket quite for a while rolling it up and welding it all together.

[Bert]

Wobbly put me onto this TPS, I think its from a Aprilia RS250, throttle cable, two carburettor cables and an oil pump cable what the fourth one is for I have no ideas.





This is going to be my new TPS (throttle position sensor) to go with the ignitech and new taper bored 24mm carb, finaly starting to get all the bits together to make a decent engine management system.

Same as on a RGV... I must have a couple of them sitting around under the bench (should have thought of that)... Good thinking Wobby/TZ.

[wobbly]

Here is the pattern layout TeeZee with all the pieces in order, edge to edge.
Mark them as you roll them up.

[bucketracer]

Same as on a RGV... I must have a couple of them sitting around under the bench (should have thought of that)... Good thinking Wobby/TZ.

So that is Aprilia RS250 and RGV250 that have cable operated TPS's, now that is very handy ......

Here is the pattern layout TeeZee with all the pieces in order, edge to edge. Mark them as you roll them up.

Thanks for the layout, TZ suggested I should stand them all on end and number them according to their length but having a proper layout plan is much better.

[crazy man]

think l would rather hydraulic my chambers out than welding that up

[bucketracer]

think l would rather hydraulic my chambers out ....

We tried that once, not a very pretty result.

[bucketracer]

For those that are interested in such things, here is a whole stack of port maps for 50-80cc performance engines.



http://www.rprhosting.dk/nytsite/art...d=8&c_start=30

[2T Institute]

The 4th cable on the TPS goes to the servo motor. Beware with the TPS as it limits slide travel on RGV/RS carbs. A conversion I helped with on a TZ250 5KE required a new quadrant to be machined up to get the full sweep of the TPS v's full movment of the slide. Before you ask you need the full sweep of the TPS because the more divisions in the sweep the more accurate the mapping.

[dinamik2t]

Proper TZ's pipe layout:

[Buckets4Me]

Proper TZ's pipe layout:

you forgot the big fin on the back

[TZ350]

Ha Ha ... thats pretty good..... we need a name for the pipe, any ideas.

[crazy man]

We tried that once, not a very pretty result.

there are lots of little tricks to make them right but you can get them right. l'v made over 10 rs125 ones 3 of the guys l made them for that dyno them said it went back up to the same hp as the standard ones. at the time another guy was making them the cone way and was losing 3-4 hp so some for the riders were saying