2av54 no longer available

[Dr Bones]

From my research it seems the Honeywell 2av54 hall sensors are no longer available (previously from USA via Farnell UK). The Chinese sensor CYHME56 is being listed as the alternative. Anyone used these before, Chinese stuff hasn't always got the best record being made to correct specifications and having a long service life.

 

[Fanum]

You're right

Still available HERE though, for now.

PS no idea about the Chinese versions, but it's a pretty basic and simple, robust device.....I wouldn't have thought they could fekk it up that much

 

[Dr Bones]

I wouldn't have thought they could fekk it up that much

I don't know, that component has to endure endless heat cycles and vibration. If the quality of the materials it is made from aren't up to scratch it'll fail prematurely.

 

[Fanum]

I don't know, that component has to endure endless heat cycles and vibration. If the quality of the materials it is made from aren't up to scratch it'll fail prematurely.

It's a solid state inductive pickup.....no moving parts.

The majority of HES failures seem to be wiring/connection failures, because BMW used the wrong sort of insulation/wiring grade in the wiring from the two sensors to the ECU.

Yes, you're right, it does go through a lot of heat cycles and it is close to a shaft that wibbles a lot, as well as being close to the front suspension and all of its movement.

There's a Greek supplier on Ebay that seems to have re-manufactured a new HES plate for a lot less (130 euros or thereabouts) than new (180 quid?) that might be worth checking out as an alternative (albeit an expensive one compared to soldering up a new pair of sensors)

 

[DrFarkoff]

I bought 6 and rebuilt 3 bean cans they work fine in k and oilheads but the 3 ones i fitted in an airhead cut out at 1800 rpm

bought a couple of 2av54 and same bean can etc etc and cured
#
My vote = ZERO

From my research it seems the Honeywell 2av54 hall sensors are no longer available (previously from USA via Farnell UK). The Chinese sensor CYHME56 is being listed as the alternative. Anyone used these before, Chinese stuff hasn't always got the best record being made to correct specifications and having a long service life.

 

[Dr Bones]

I've seen the Greek ones

http://www.ebay.com/itm/Bmw-hall-se...920?pt=LH_DefaultDomain_0&hash=item19d48c3d48

Looks like they make a whole new plate up (no pressings in their plate for the wiring). I wonder what components they use in them (perhaps they use chinese sensors?).

I've just rebuilt one HES with the honeywell 2av54 sensors I bought from the last group buy (Geno organised it if I remember) and some silicone wire I got from a RC model shop. Now I want to rebuild another HES as a spare. If I'd thought about it, I would have bought four sensors in the group buy not two. So I'm not desperate but I'd rather not have to buy chinese junk if I don't have to.

 

[Dr Bones]

Just asked the Greeks which sensors are they using.

Also found this

http://bmwsporttouring.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=650579

In one of the posts

"There is a direct alternative - the CHYME-56 a Chinese device now being supplied to BMW as OEM kit"

Wonder if that is true ?

Germany supplier of chinese sensors

http://www.hallsensors.de/Hall-Vane.htm

 

[Dr Bones]

I've had a conversation with the Greek supplier of the replacement HES. They've been making them for about 5 years and have shipped 50-60 world wide (so not a huge quantity), and they say they've not had any returned failed. They believe they have addressed what their research show as the weak point of the original Bosch sensor. They believe it is the poor earthing and the proximity of the HES cable to the high tension lead which causes the damage to the sensors. I've not come across this diagnosis before (the other one, is disintegration of the HES cable due to the engine heat), but it could be plausible given the 1100 suffers more HES failures than other BMW models which have stick coils.

I've ordered one to have a look at. I'll put it in the bike and see how it goes (keeping a spare HES with me just in case). If all goes well, we may be able to negotiate a discount on a group buy if people are interested.

 

[Geno]

Depending on price .??

 

[taffyflytyer]

Depending on price .??

yes very interested

 

[Flanners]

I would be up for the Group Buy, having had my HES go recently a spare would be great.

 

[Green Boy]

I would be up for the Group Buy, having had my HES go recently a spare would be great.

+1 I'd be interested in having a spare if the price is right.

 

[nud1e]

Group Buy

+2 I'd be interested if the price is right.

 

[zzr1100d1]

Group buy

I'd be interested

 

[Steptoe]

but it could be plausible given the 1100 suffers more HES failures than other BMW models which have stick coils.

.

Not from my experience

 

[Dr Bones]

Not from my experience

I'll bow to your experience on this one, I read several pieces of information that suggested that the 1100's had more of an issue than other models. I still find the poor earth / HT lead theory interesting though.