• Warning!!

    Riding a tuned or deristricted EMTB is not a trivial offence and can have serious legal consequences. Also, many manufacturers can detect the use of a tuning device or deristricting method and may decline a repair under warranty if it was modified from the intended original specification. Deristricting EMTB's can also add increased loads for motors and batteries. Riding above the local law limit may reclassify the bike as a low-powered bike, requiring insurance, registration and a number plate.

    Be aware of your local country laws. Many laws prohibit use of modified EMTB's. It is your responsibility to check local laws. Ignoring it, has potential implications to trail access, and risk of prosecution in the event of an accident.

    UK Pedelec Law

    Worldwide Laws

    We advise members great caution. EMTB Forums accepts no liability for any content or advice given here. 


ChrisP

New Member
Patreon
Founding Member
Jan 21, 2018
48
99
East Yorkshire
I would prefer to see discussion, its clear that some have no idea what hacking actually does and as they say you never learn anything with your mouth open

Haha well said ccdave :)

I fail to see how derestricting could mess up the e-bike community and cant understand why people are getting their knickers in a twist about it? Surely in this free world it can't be taboo subject? It's a personal choice - you can either do it or not. Simple.

As for derestricting Bosch - I had done it using the PearTune device. I found it excellent - it just helped out in that 15 - 20 mph zone where it was needed most. I rarely used power over that speed. I agree that if we could have the US version with the higher limit it would be perfect for me with no derestriction required.

As for dealers being able to detect if it has been tampered with - Both Trek Bosch bikes I had (wife's as well) had a duff batch of main drive bearings fitted from new and needed replacing after around 400 miles. I had simply taken out the PearTune and the LBS did a diagnostic before sending the motor back to Bosch. They did NOT detect that it had been there. Since then I have found out that the diagnostic looks for unusual battery temperature readings to identify if it has been tampered with. Therefore, I would imagine that I had been using power say, between 20-30mph for extended periods then it is likely it would have been detected.

And before all the haters say that the bearings would have gone BECAUSE I had the PearTune fitted...........a friend had the same setup on his Bosch and is still going strong 2k miles later!
 

Mark S

New Member
Oct 14, 2018
12
2
Brisbane
I was a keen cyclist until 14 years ago when due to an accident I was told separately by 2 knee specialists that I should give up cycling. The reason they said was that I must not cycle up hills. With the advent of E bikes it seems likely that I can cycle again so long as I can use E power to get up the hills. As some hills will be very steep and I weigh 80kg, I figure I will sometimes need significantly more than the 250 watt continuous power available with today's restricted motors. As I understand it Australian regulation are pretty much the same as in the EU, and so there are regulatory issues I would need to address if I went down this path. The Flyon motor, with its 3 power levels, will not be in any bikes until around mid 2019. Can anyone please advise what continuous watts the Brose and Braun CX motors can provide when derestricted?
 

ccrdave

E*POWAH Elite World Champion
Patreon
Founding Member
Jan 16, 2018
1,405
1,105
uk
A derestricted bike will not produce more power than the designers intended it will just continue to give assistance up to the limit of your gearing (depending on where the restriction is raised to)
For hill climbing i would think you want to pick a motor that responds best to cadence
 

Mark S

New Member
Oct 14, 2018
12
2
Brisbane
I do get your point, but .... what is going on with TQ and the advertised data for their Flyon motor:
TQ HPR 120S Rated Power (W)250, 500, 920. Torque (Nm)120, 120, 120?
 

ccrdave

E*POWAH Elite World Champion
Patreon
Founding Member
Jan 16, 2018
1,405
1,105
uk
I think thats a bit more than just removing the restriction it would mean a rewrite of the firmware to acsess the higher power above 250 its not a pedelec anymore
 

Sjc501

Member
Sep 24, 2018
21
7
Glasgow
I have used blevo and Zworks with my Levo the zworks is best on the IOS platform and blevo best on the android platform, they both do the same thing the Zworks author is the original "inventor" of the system I personally use the zworks sport ,power and madness settings depending on what im doing and I think its a massive improvement on motor response, and response is the keyword here the motor does not produce more power than the manufacturer intended, its just the way its provided.
I have had discussion with the author and in particular I asked why when the motor current is set to zero you get a much more responsive motor. His answer, "the specialized software has a bug" you can make of that what you will!!
the apps also allows to remove the speed restriction, thats a personal thing but just to reiterate you do not have to use that function to realise the other benefits and its illegal to use an unrestricted bike on public land
 

Yonkk

Member
Jan 10, 2019
7
7
usa
HOW TO INCREASE EBIKE SPEED LIMIT USING THE LCD DISPLAY. Increase speed from 19 mph to 28mph, this works on Juicedbikes and Pesu ebikes maybe other e bike brands. .......... This is the Wiseview CS280 Display ...
 

HORSPWR

E*POWAH Master
May 23, 2019
849
675
Alice Springs, Australia
A derestricted bike will not produce more power than the designers intended it will just continue to give assistance up to the limit of your gearing (depending on where the restriction is raised to)
For hill climbing i would think you want to pick a motor that responds best to cadence

I would've thought for hill climbing you'd want to pick a motor that responds best to torque?

On my Merida e160 900e (Simano Steps E8000), when my cadence drops off so does the assistance, it's like it wants me to use my cassette range more rather than my motor.
When I'm in the correct gear even with a slow cadence just a firm push on the pedals brings the motor back into play, makes it great for lofting the front wheel up steps and rocky jump ups.
 

BeBiker

Active member
Aug 26, 2020
655
403
Belgium
Who would spend that kind of money on a new bike and throw the warranty out the window as the first thing they do!
Seems totally mad to me.

On my bike the presence-history of a speed delimiter is not detectable nor provable.
But if the seller had left me the choice: Warranty or speed delimiter, I would have chosen the second.

.
 

Dago

Member
Dec 5, 2020
48
34
Michigan
"Hacking" is a bad name, for what, if done right, works amazing. Purchased a 2019 Kenevo. Within 1-2 rides thought I'd made a mistake, as the motor restriction was way to slow for my average speeds. After checking on hacking methods, settled on "Lite Blue" which simply "told" the motor the bike had 20 inch wheels. This was a game changer. Unlike most EMTB riders that want some fast shuttle up, to simply go downhill, I also use my bike to go fast through the single tracks, in the woods, up and down, all mountain. Have spoken with others who have had trouble with the longevity of the motor, as it comes from Specialized. I actually love to ride uphill in ECO mode, and cycle in and out of higher modes, constantly. As a consequence, my motor is phenomenal, virtually silent (have heard complaints of noise) and works better, across ALL modes, extending my battery life for rides beyond 25 miles. When I buy another Ebike, I will "hack" it immediately. It is ridiculous that, if a motor is used for various wheel sizes, that changing these settings voids the warranty?!?1 Especially when my bike has run better, and keeps running better, all the time.
 

Doomanic

🛠️Wrecker🛠️
Patreon
Founding Member
Jan 21, 2018
8,463
9,932
UK
Especially when my bike has run better, and keeps running better, all the time.
This has absolutely nothing to do with your "hack" and everything to do with Brose's abysmally variable build quality.
 

SurreySteve

Member
Jan 9, 2022
30
10
Surrey Hills
So where is this now ? I've got a Gen2 Bosch and derestricting the speeds is not particularly high on the list of stuff to hack.
I'm more worried shorter term with updating firmware without involving a dealer if I want and enabling walk mode and playing about with power bands. At some point I'll need to build a new battery and I don't even know if that will brick the bike without some security removing.
 

Dago

Member
Dec 5, 2020
48
34
Michigan
This has absolutely nothing to do with your "hack" and everything to do with Brose's abysmally variable build quality.
I agree. About 1 out of 4 of these Brose are very good. Got lucky on mine. But it does further prove the point that derestricting does not adversely effect the motor. They are made to produce the same power regardless. What is really driving us crazy is that my son just got a Creo SL Sworks. The SL motor on his bike is tuned wayyyy faster and better than the Kenevo SL we tested. The whole 15-18mph cut out is ridiculous, when this Creo goes past 28mph before cut out.
 

Dago

Member
Dec 5, 2020
48
34
Michigan
It's a bit of a myth that de restricted means faster . A good rider can pump out enough power over the cut-off limit to do the same speed as a de restricted bike . Shore you can hold speed longer and easier . But faster . Hmm kinda But not really .
In varied terrain, featuring jumps, not simply downhill, first rides on my restricted bike put me in dangerous situations. How? Try riding at the limit as you approach a jump. If a 53 pound bike “cuts out” approaching the jump you can be in a world of hurt. Have been riding motorcycles 50 years and MTB since late 70’s. Derestricting my EMTB was mandatory to get the most of a big bike’s potential.
 

Dado

Active member
Jun 28, 2022
559
400
Bratislava
Hello ebikers.

K1 eBikes has designed small, portable and simple K1 CAN Monitor & Speed Unlocker - no need computer or mess with BESST. Works ONLY with Bafang motors with CAN bus (green connector to display with "house" shape 5 pin connector).

For more info check the following link:
https://endless-sphere.com/forums/viewtopic.php?f=31...

How to unlock speed:
https://youtu.be/6z3TzEqNWsQ

If you interested, send an email to [email protected], will answer any questions and will send user manual.
K1 CAN Monitor is determined for testing purpose only and is not waterproof.

CANMon2.JPG
 

Dago

Member
Dec 5, 2020
48
34
Michigan
It's a bit of a myth that de restricted means faster . A good rider can pump out enough power over the cut-off limit to do the same speed as a de restricted bike . Shore you can hold speed longer and easier . But faster . Hmm kinda But not really .
Perhaps you have not ridden the type of terrain mentioned, or do not have experience riding or racing against analog or restricted ebikes. There is no way, at least how my bike is ridden, for these riders to keep up.
 

Tribey

Active member
Jan 1, 2019
306
225
South Devon, UK
@ 120rpm i can nearly hit 40mph on the flat and not 1 race bike rider can keep up or even keep me in sight.
Are you still running the 21 tooth front chain ring and the 10 toothed SRAM Eagle 12 speed cassette?
If you are, I'm sure that set-up doesn't equal 40mph @ 120rpm.
 

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