S class bikes

[hech]

If I recall correctly(which I may not), I thought you to be passing reference to a previous review of the tonaro eagle, an article with which I strongly disagreed.

 

[103Alex1]

If I recall correctly(which I may not), I thought you to be passing reference to a previous review of the tonaro eagle, an article with which I strongly disagreed.

If you mean me, I've never read any articles on Tonaro Eagles. Fisheagles, maybe, but not Tonaro ones so far as I recall

 

[flecc]

Ah - thanks for clarifying that - it looks like a seatpost rack from the pics so always good to know these things and get factual informative comments.

The rack is very small though and overlapped by the battery, so far from convenient for panniers:

 

[eddieo]

You could fit it as per their basic instructions, using clips into the sensor cable in the area where it exits the shroud. This would be easily reversible without much evidence, BUT, it looks crap and would be very exposed to the elements.

I'm not (fingers wildly crossed ) too bothered about the warranty side of things. The bike parts I can deal with if need be, and if the motor goes pop, well I'll look pretty silly! I guess I'm playing the odds a bit, but if the quality is anything like the Kalkhoff/Panasonic, and I think it is, I don't expect problems.

Hugh, found this on german ebay. the drawing makes it look real simple so not so worried now..may do it if I get a 29'er

I see why you did it within unit though...

Neu Tuning für Bosch E-Bike bis zu 50 km/h schnell! Einfache Montage | eBay

 

[Deleted member 4366]

The rack is very small though and overlapped by the battery, so far from convenient for panniers:

Looks quite simple to modify. Tommes opened up the battery case, unbolted the standard rack and bolted on a bigger one. There's a picture halfway down this page and IIRC a detailed description somewhere in this thread.
Vorstellung Umbau Rolektro Sport

That tuning device for the Bosch motor looks very expensive for what it is. IIUC it is connected in parallel with the pulse coil wires, so it must be passive. Assuming that it's a normal pulse coil, it'll only make a pulse of a few mV. So, up to a certain low frequency it lets all pulses through and above that, every other pulse. So what's in it that fits inside a mini jack plug? An inductor and capacitor?

 

[Hugh]

That's the one Eddie.

I started by trying to use the standard clipping into cable method, but it was too bulky for my liking, and once I'd tried that and found it worked, I thought I'd go the whole hog and cut into the cable properly and hide it away tidily. Like I said, I'll have to keep my fingers crossed warranty-wise, but I can live with that.

I was actually quite nervous about it to start with, as I'm nobody's electrical expert, just reasonably handy and logical. However, once the first cut was made, that was it, and actually it was dead easy.

I've got some instructions and pictures (translated from the German by Google, so a bit garbled, but understandable), if anyone wants them. Can't attach here as it'll only allow image files.

 

[Deleted member 4366]

That's the one Eddie.

I started by trying to use the standard clipping into cable method, but it was too bulky for my liking, and once I'd tried that and found it worked, I thought I'd go the whole hog and cut into the cable properly and hide it away tidily. Like I said, I'll have to keep my fingers crossed warranty-wise, but I can live with that.

I was actually quite nervous about it to start with, as I'm nobody's electrical expert, just reasonably handy and logical. However, once the first cut was made, that was it, and actually it was dead easy.

I've got some instructions and pictures (translated from the German by Google, so a bit garbled, but understandable), if anyone wants them. Can't attach here as it'll only allow image files.

What would be better would be to unscrew the cover from the jack plug and see what's inside so we can all have one.

 

[eddieo]

What would be better would be to unscrew the cover from the jack plug and see what's inside so we can all have one.

Sooo... what is does is interupt the signal from rear sensor and fools system by (halving or doubling? the pulse, so it doubles up the speed - is that it?

I suppose as system so strong as long as you dont over so it it should be OK..But boys being boys I do worry!

 

[Old_Dave]

Sooo... what is does is interupt the signal from rear sensor and fools system by (halving or doubling? the pulse, so it doubles up the speed - is that it?

I recon so ... a divide the pulses by 2 circuit is easy peasy and only 1 cheap as chips chip is required

 

[Deleted member 4366]

I've got a feeling that it's some thing really simple because it works in parallel and has no power supply unless the coil has a live supply, so it can't interrupt the normal pulses.

Eddieo. IIRC it shows normal speed up tp 25kph and then half speed, so it lets all the pulses through up to 25kph, and after that, every other one.

 

[Old_Dave]

I thought it was /2 all the time whilst plugged in... But we know what thought did, lol


Sent from my iPhone using Tapatalk

 

[SRS]

What would be better would be to unscrew the cover from the jack plug and see what's inside so we can all have one.

I'll agree with that.

As I understand, speedo should read normally up to the original cut off speed, then halve the number of pulses. Hugh, is this actually what happens?

Being a two wire sensor, I can't imagine how this is achieved, anyone any ideas?

My idea to derestrict my KTM is as follows.

Small PIC or processor of some description. Powered by a thin usb lead from the speedo unit.

Pot up this unit with resin complete with small integral electromagnet coil. The unit can programmed to output pulses to the bosch pickup coil as required. This could be easily mounted.

Activation of the unit would require a hall effect to pick up a pulse/s from the original spoke magnet. Repositioned to a convenient spot.

Any problems and the bike could be put back to factory condition within a minute or two.

Bit more work than buying the present dongle off the interweb but would retain the warranty.

Any thoughts on this idea?

 

[Deleted member 4366]

The problem is the changing frequency that the controller's looking for. You could fool the original ones by putting the magnet on the back of the pedal and shifting the pickup to the other chain-stay, but they changed something in the software to defeat that. It now looks for some sort of change in the correct frequency range. Maybe they put a minimum frequency of the pulses for it to work. I bet they've figured it out on the German Pedelecs forum if you do a search.

 

[SRS]

The problem is the changing frequency that the controller's looking for. You could fool the original ones by putting the magnet on the back of the pedal and shifting the pickup to the other chain-stay, but they changed something in the software to defeat that. It now looks for some sort of change in the correct frequency range. Maybe they put a minimum frequency of the pulses for it to work. I bet they've figured it out on the German Pedelecs forum if you do a search.

As far as I can tell, on the early units, you could move the sensor and magnet to the crank. Thereby reducing the effective output frequency.

Software now prevents this. The only way that they could write this out with software (as i see it) would be to compare the known rotational speed of the motor to the known geared rotational rate of the crank. If the two values follow each other precisely then some one has done the dirty and moved the sensor.

They cannot possibly know if a rotational speed sensor of the wheel actually true or not. Within normal frequency limits as expected.

I therefore conclude that pulsing the sensor within reasonable limits should do the trick.

 

[Old_Dave]

I've got a feeling that it's some thing really simple because it works in parallel and has no power supply unless the coil has a live supply, so it can't interrupt the normal pulses.

Yes.. my bad

Only method I can think of that would work in a parallel configuration would be a .. long pulse

If they are detecting the pluses.. the frequency would rise as speed increases, so if f > x then the 'unit' becomes active and output pulses become double width (effectively masking the sensor pulses as it cant see the on if its already on*)

* I'm sure there's a better way of saying that... but I havn't had enough cafine yet.

 

[Hugh]

I'll agree with that.

As I understand, speedo should read normally up to the original cut off speed, then halve the number of pulses. Hugh, is this actually what happens?

Morning all -sorry about slow response time - flu is winning at the moment.

Answer - yes, speedo reads normally up to around normal cut-off sped then goes awol. That's why I got a Cateye wireless speedo as well, as I assume that the mileage count also goes haywire at the same time. It's also handy to have something that shows mph - the Bosch unit (being German import) will only show kph.

I'll have a look at the dongle and see if it can be unscrewed later. Off to Doc's now.

 

[Deleted member 4366]

I hope you get over it soon, and I also hope that you get a better response from the doc than I did. Since I got sent home from hospital with pneumonia and deranged liver function, in two visits, mine didn't check or do anything. I was supposed to get an outpatients appointment at the hospital, but it turns out the guy's fully booked. It's been two weeks and I'm still waiting.

I'll be your friend for life if you can get a picture of what's inside. It wouldn't surprise me if the guy super-glued it so that we can't see how simple it is.

 

[Old_Dave]

It wouldn't surprise me if the guy super-glued it so that we can't see how simple it is.

I'd not only of glued, but sanded off any markings / values and then potted it in epoxy for good measure

 

[Hugh]

I'll be your friend for life if you can get a picture of what's inside. It wouldn't surprise me if the guy super-glued it so that we can't see how simple it is.

Lifetime friendship up in smoke I'm afraid

You're right - it's been glued and sealed and I daren't try and open it in case it knackers it.

Hey ho.

 

[Deleted member 4366]

Thanks for your effort, Hugh. I think it confirms my suspicion that it's something really simple like an inductor, capacitor or both.