Bosch Tuning dongles arrived today - 50kph cut off..

[flecc]

A 45 tooth on a 11 tooth rear with 700c wheels would be about right for high assisted speeds with the dongle.

That would give an optimum efficiency cadence of 90 at 29.6 mph (47 kph), and few like to pedal faster than that.

The many who regard a 70 cadence as fast would only get 26.6 mph (43 kph) with that sprocket combination and 70 cadence. They'd need a huge 60 tooth chain wheel on an 11 tooth rear with 700c wheels to reach 30.7 mph (49 kph) at a 70 cadence to fully utilise the dongle's limit.

 

[Martin@e-bikeshop]

I dont think a 42T is going to do it.

With my super-pedelec I ended up with a 45T chainwheel with the 11T at the rear - otherwise you're just peddling too damm quick. And seeing as the Haibike with the dongle on it has even more power I am not even sure a 45T would be enough.

I guess you will let us know.

Of course James, I will be testing differnt sized sprockets.
Will let you know the outcome. Hugh gets on pretty well with his 42T.
Ill have to consider different riding styles as off road may require slightly smaller than 45T on a 26" wheel.

For the road maybe a 45T on 700c would be appropriate as flecc suggested above..

Regards
Martin

 

[Martin@e-bikeshop]

Also would like to point out that I have had another batch on dongles arrive today.

Although there going fast! I have dongles available for wheel sizes - 20", 26", 28" & 29".
I will post back in a day or so when I have updated the website too..

Regards
Martin

 

[103Alex1]

As for the Impulse drive there is not one currently on the market but we are in testing with the company to make one both for the impulse and another for the Panasonic drive. We should expect to see these in the coming months.

Keep me posted Martin - will this be compatible with Alfine hub gears ?

 

[Martin@e-bikeshop]

Keep me posted Martin - will this be compatible with Alfine hub gears ?

Ok will do Alex, and yes I see no reason why it shouldn't be compatible with hub gears.
Will let you know in due course.

Martin

 

[Martin@e-bikeshop]

OK,

So the Bosch dongles are now live on the e-bikeshop.co.uk website.
I have put all the relevant information on there.
You can also order on-line with free next day postage (Within UK)

I have now also put a kit together that includes the dongle, the cable kit, some cable ties, a couple of bits of heat shrink wrap, a couple of 3M scotch clips & printed instructions.


I have also included the instructions as a PDF download, with plenty of pictures in there if you are wondering how they fit on.

I also am expecting some Bosch Spider tools to arrive in the coming weeks.
In the meantime I have ISIS crank extractors here ready to go.

Link Here - Bosch Tuning Dongle - Your Electric Bike Shop in Hampshire

Best Regards

Martin

 

[Martin@e-bikeshop]

Great dongle review here guys!

Review here - http://www.e-bikeshop.co.uk/Bosch_Dongle_Review_March_2013.pdf

Dongle itself - The Bosch tuning dongle changes the cut off speed from 15mph to roughly 30-35mph!

Any questions please ask!

Martin

 

[Hugh]

Your reviewer must be younger than me 45t front ring would be pushing it (probably literally!) a bit. I can just about keep the 42t spinning up to its max in top gear (11t) but I don't want to lose the potential climbing ability for e.g. Mt Ventoux

Other than that, I'll go along with the review entirely. I didn't solder mine - twisted wires and plenty of rubber tape instead - but it works and is the business.

 

[Artstu]

Fit cyclists push 53 x 11 without too much trouble, so with a bit of motor help 45 x 11 isn't really that high.

 

[Martin@e-bikeshop]

Your reviewer must be younger than me 45t front ring would be pushing it (probably literally!) a bit. I can just about keep the 42t spinning up to its max in top gear (11t) but I don't want to lose the potential climbing ability for e.g. Mt Ventoux

Other than that, I'll go along with the review entirely. I didn't solder mine - twisted wires and plenty of rubber tape instead - but it works and is the business.

Hugh,

I think the middle ground could be a 43t, but I will have to see..
What speeds does your ebike push with the 42t, just out of interest?
I'll ask on the speed of the 45t so we can compare the difference.

Obviously age, fitness, agility, wheel size etc are all factors to bring into the equation also.

Regards
Martin

 

[Martin@e-bikeshop]

Hi Guys,

With the massive success of the dongles, I can now confirm we are now the sole supplier to the UK.

Updated dongle fitting instructions can be found here -
http://www.e-bikeshop.co.uk/e-bikeshop.co.uk - 1A Bosch Tuning Dongle Fitting Guide.pdf

Our Latest Customer Review here -
http://www.e-bikeshop.co.uk/Bosch_Dongle_Review_March_2013.pdf

More Information here -
The Bosch tuning dongle changes the cut off speed from 15mph to roughly 30-35mph!

We have just had another big drop in of 26" and 28" dongles. So for all those on the list, they are here ready to go. I have phoned around so sorry if I have missed anyone..

As usual any questions please just ask. Email : sales@e-bikeshop.co.uk

Regards
Martin

 

[Martin@e-bikeshop]

Hi Everyone,

Just to update this post for anyone coming across it in the future.
Our website has had a massive overhaul so the links above are now expired.

The new Bosch Dongle page is here - Bosch Tuning Dongle

And the fitting instructions / review can be found on the new downloads pages here - Downloads

Regards
Martin

 

[billyx22]

Hi all,
New to all this, just bought a Cyclomatic.
All these dongle things... are they only made to work on Bosch or are there any that would work on the cheaper bikes/motors like the one I have.
Thanks.

 

[flecc]

Hi all,
New to all this, just bought a Cyclomatic.
All these dongle things... are they only made to work on Bosch or are there any that would work on the cheaper bikes/motors like the one I have.
Thanks.

No, you can't use it or similar on a hub motor bike like the Cyclamatic.

There are two things that can be done to tune that. First to increase speed, the ony method is to use a higher voltage battery, in your case a 36 volt in place of the 24 volt. That increases the top assist speed by half to around 22 mph maximum, but at the cost af the new battery of course.

At that the power will be a bit lacking, so to rectify that and give more power, the shunt bar in the controller should have some solder added to one leg to decrease it's resistance and increase the power a little.

Here's a link that goes to a post by Fordulike with a number of links to more information on this modification.
.

 

[billyx22]

No, you can't use it or similar on a hub motor bike like the Cyclamatic.

There are two things that can be done to tune that. First to increase speed, the ony method is to use a higher voltage battery, in your case a 36 volt in place of the 24 volt. That increases the top assist speed by half to around 22 mph maximum, but at the cost af the new battery of course.

At that the power will be a bit lacking, so to rectify that and give more power, the shunt bar in the controller should have some solder added to one leg to decrease it's resistance and increase the power a little.

Here's a link that goes to a post by Fordulike with a number of links to more information on this modification.
.

Thanks very much for your help.
All sounds a bit beyond me though.
If I got a bigger battery, say the 36 volts how could the power be lacking if it's a bigger battery?
Told you I was new otherwise known as clueless!

 

[trex]

billy, the dongle does not fit your Cyclamatic.
It's made to defeat the electronic speed limiter fitted into fast e-bikes with poweful motors like Bosch, Impulse, Panasonic or Yamaha.
Your Cyclamatic is already optimized, you won't be able to make it go faster without spending a considerable amount of money. If you need a faster e-bike, sell it and get a more powerful one.

 

[flecc]

Thanks very much for your help.
All sounds a bit beyond me though.
If I got a bigger battery, say the 36 volts how could the power be lacking if it's a bigger battery?
Told you I was new otherwise known as clueless!

Being clueless on a technical subject is perfectly ok Billy, we're in a complicated world where none of us knows everything.

The power becomes lacking if riding very much faster because wind resistance rises so rapidly with speed increase. For example, cycling at 12 mph wind resistance is of little consequence, but at around 20 mph a lot of power is needed to overcome it. As a cyclist I'm sure you'll already know how tough it is to pedal against a headwind.

Trex in his post above is perfectly correct, buying a more suitable e-bike is better than spending a lot of money to modify one. But of course it's also expensive and anyway, legal e-bikes are not any faster as supplied, just in some cases much easier and cheaper to alter to give higher speeds.
.

 

[Deleted member 4366]

The Cyclamatic isn't normally limited on speed. You can test it by putting a cycle computer on the back wheel, then lift it off the ground to see how fast it goes with the throttle. It should go about 20 mph. If it only does 15mph, you have to open the compartment under the battery, pull out the controller, then unplug to white wires that are connected together.

A 36v battery will give more speed and power. If you get the same type it should fit, but it'll be longer, so you need the longer aluminium strip that it locks into. If you get one from BMSBattery, it comes with the strip. Whenever you get a replacement battery, you must check that the + and - terminals are the same way round

Soldering the shunt in the controller gives even more power and helps with hill-climbing, but is not a necessary modification. A Cyclamatic will fly with a 48v battery. Mine did 33mph with a 44v one.

 

[billyx22]

Thanks for all the replies, very informative.
d8veh When you say unplug two white wires...what do you do with them, leave them both unconnected?
Would you happen to have a link to the correct 36v battery on BMSBattery that would work?
Thanks.
Just to make things a bit clearer it is not really more speed I am hoping for just maybe a little more power.
I bought the bike to help me recover from an operation, when fit I look forward to using more pedal assist but at the moment the throttle having a bit more power would be a big help.
Thanks again.

 

[flecc]

Just to make things a bit clearer it is not really more speed I am hoping for just maybe a little more power.
I bought the bike to help me recover from an operation, when fit I look forward to using more pedal assist but at the moment the throttle having a bit more power would be a big help.
Thanks again.

In that case, soldering the shunt in the controller is the easiest and a very cheap way of making the Cyclamatic a bit more powerful.

If you go back to my original reply and use that link I gave to several more links from Fordulike (who was the first in here to do this on a Cyclamatic), you'll find it easier than you might think at first to follow the guidance in doing that.

If you haven't soldered before and haven't the wherewithal, a soldering iron kit can be very cheaply bought, Amazon link here and ebay link here. They mostly include soldering guides. A little practice first on bits and pieces and the shunt modification will be easily achieved.
.