ESE's works engine tuner

[husaberg]

I am almost feeling guilty about bringing this up, as they are Italian.

But I am looking for a not so common Brembo caliper for a pre-89 project.

I know I can buy a new repo or get one close enough like a ktm60/65, but as I am in pretty deep now and a bit of an anorak.

As best as i can discover they were oem on a few bikes of the late 80s and early nineties they are a Brembo calipers As used on the TY250, Aprilia Climber, Montesa Cota, and I think a few others, like I possibly husky al ktm Gas Gas .and Fantic.


DR50 Big.

Grimeca and AJP later made a similar one used on a lot of debris, like the Senda and the early ubiquitous early 98 to 01 KTM 60/65. Which if i can't find a cheap one ,is what i will have to use.

Anyone have a lead on one or know other bikes that have them? i found a few but Shipping on eBay from the EU or US is almost criminal or the sellers dont want to?
I tried the usual cross matching through pads etc but they used similar pads on other Brembo and Grimecas?

They look very similar to a Yamaha RD350 caliper only smaller and not cast iron the Yamaha ones which i always thought was a licensed Lockheed Copy?
The Brembo also have square pads.

pic to be attached if KB lets me.

[ranasada]

Having not had any response from my many attempts to contact Franco , and receiving no feedback from the Flenghi brothers Filippo /Thomas I contacted a friend
Marc Marcelet.

He is also a very good friend of Roland and he has asked him to contact Filippo in person ( in Italian as he speaks little English ).
They have agreed to fulfil my normal " contract " for the R3 development work, but I fear I have been " tarred with the same brush as Franco " and am now PNG.

Really pisses me off, having started working with Claudio well over a decade ago and I have turned down work from others feeling loyalty to TM with such a long association.
We shall see what Roland can find out - I know he worked at TM, but Franco never had a kind word to say - nothing unusual about that though.

The latest info is that Franco was fired as he was spending all his time trying to get his own KZ engine homologated, ran out of time, and the Lenzo thing is just a stop gap.

did you know that TM was sold to a fund, the same one that owns the OTK group (tonykart/vortex) & vegatyres?

[wobbly]

Several people with Tinfoil hats have said its a "Mafia " fund - just conjecture I imagine.

[crbbt]

I am wondering if anyone has experienced having a carb needle snap?

On my PWK. I've recently snapped two through a clip slot.

Seems to happen after landing a jump

I am guessing it's either a worn slide or the body.

But before I order another needle and a new slide. thought I would ask

[F5 Dave]

That's some weird shit. I had some debris fall in (trackside jetting) ans it caused the needlejet damage so it would scratch and hang up a needle (ie stick) had to turn up a new insert.
But snap??? That's weird. Genuine PWK not a clone?

[wobbly]

In the Dellorto 30mm carbs I use they have a washer sitting on the clip, and the screw in needle holder has a spring that pushes down on that washer.
Thus the needle can float.
It does of course and that wears the needle parallel and the tube, eventually making the transition and mid go rich.

The cure was to put a washer on both sides of the clip, insert the holder loosely and fit the slide.
Then push the slide up and down a few times and lock the holder.
This clamped the needle in place.

It did two things - eliminated the wear issue, and weirdly it reduced deto, allowing leaner mains and higher EGT.

[Wos]

I am wondering if anyone has experienced having a carb needle snap?

On my PWK. I've recently snapped two through a clip slot.

Seems to happen after landing a jump

I am guessing it's either a worn slide or the body.

But before I order another needle and a new slide. thought I would ask

There are many adtermarked and copy pwk in the universum Needles and clips too.
Some needles are of bronze / cusn with clips that look that they ar made of brass or copper berylium..

CUSN is not very break ressitant...and the brass clips loose tension very quick.

Mayby the clip slots have been worn out before breaking?

Steel clips as in keihin origina dont loose tension and keihin needles have best precision

Grüße Wolfgang

[Frits Overmars]

I am wondering if anyone has experienced having a carb needle snap? On my PWK. I've recently snapped two through a clip slot. Seems to happen after landing a jump. I am guessing it's either a worn slide or the body. But before I order another needle and a new slide. thought I would ask

A throttle slide tends to tilt slightly backward-forward due to the inlet flow pulsations it is subjected to. And as you guessed, this tilting becomes worse as the slide and/or the carb body become worn out.
In some throttle slide-needle combinations the needle fits so tightly in the slide that it cannot accommodate this tilting. The needle is then subjected to bending stresses and breaks at its weakest point: at one of the notches for the clip. The needle then remains in the throttle closed position while the slide is open, resulting in a lean mixture and a seizure.

You could enlarge the needle bore in the slide, but I'd leave a short piece of the original narrow bore, so the needle is still centered but can swivel just the same.