Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
He can do anything that can be done. The fact the whole process took him 5 hours says something about the difficulty...
Giant SyncDrive Pro 2020 "tuning"
- Thread starter Stefan Mikes
- Start date
Captain Slow
Well-Known Member
Stefan, what did you set the new speed to? Don't tell me you went to all that work to change it from 32 to 33?
Captain Slow
Well-Known Member
Yes, after seeing this I'd never attempt it if I had a Giant.
Mtl_Biker
Active Member
He's in Europe and the bikes there are restricted even more than ours are here in Canada. Here we've got 32kph but there it's something like 25. Almost walking speed.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
An e-MTB is never a speed demon but it is a nuisance when you hit a wall at 15.5 mph on-road. 20 mph is fine for me.
Captain Slow
Well-Known Member
Ah yes, I forgot about European speed limits being even lower and the fact this is an eMTB
Browneye
Well-Known Member
The gearing ratios are significantly lower (higher numerically) on a mountain bike. I have the same Trance eMTB, A 2019 model, and at 20ph the cadence is pretty high. I experimented with the speed sensor re-lo hack just to see, which replaces the wheel speed with your crank speed. Pedalling as fast as I could, I think I got to about 23mph. In order to really take advantage of the unleash on a mountain bike you would really need a larger chain ring.
I thought a speed hack might help with my instant road-compatible setup on my mountain bike. Kind of all for not.
Speed sensor relo hack:
Setup for road:
I thought a speed hack might help with my instant road-compatible setup on my mountain bike. Kind of all for not.
Speed sensor relo hack:
Setup for road:
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
Congratulations on the successful installation and thank you for documenting the entire process.
I am now even more convinced of the wisdom of using an external BadA$$ box tuner... installation was 2-3 minutes.
I have learned late in life that sometimes the simplest solution is the best way to go... I now use these boxes on all my EBikes.
Browneye
Well-Known Member
Adding the remote sensor is brilliant. Sometimes progress is, well, just not progress. LOL
I used the magnet off the 2020 hub for my speed hack. There's always a tradeoff.
Frankly I think I could deal with a couple of teeth higher chain ring, I never use the 46rear. Is there an option for a bigger chain ring?
I used the magnet off the 2020 hub for my speed hack. There's always a tradeoff.
Frankly I think I could deal with a couple of teeth higher chain ring, I never use the 46rear. Is there an option for a bigger chain ring?
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
I changed the front ring on my Shimano Steps cranks from 38 to 44 teeth to increase the max road speed... an easy swap with the OEM parts.
Regarding the Yamaha drive, I have not changed the front ring on the EMTBs, but I think it would be easy because Yamaha offers OEM dual ring options.
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
I checked and found that my front BH OEM chainring is a standard FSA 36T narrow/wide with a 4 bolt 104 BCD.
You can easily swap to a larger FSA chainring for a higher top-end gear range and the chain guide is adjustable as you noted.
Haibike Yamaha 44 / 48t Outer Chainring – e-bikeshop.co.uk
This is the factory original Haibike sDuro ebike Yamaha outer chainrings. Used as replacement for original worn out rings.
www.e-bikeshop.co.uk
International update | Chain Reaction
An information update for customers outside the UK.
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
Let me know if you see a 40 or 42 in your travels.
Stock is 36, right?
Yes, the stock chainring on both of my BH bikes is 36T.
I like Raceface rings for their quality and durability.
RaceFace Narrow Wide Chainring: 110mm BCD 42t Black
RaceFace Narrow Wide Chainring: 110mm BCD 42t Black. RaceFace Narrow Wide Chainrings feature tooth profiling for chain retention and a blend of weight and durability suitable for XC DH and everything in-between.7075-T6 aluminum aerospace grade strength Compatible with 9 10 11 and 12 speed Stiff...
northwestbicycle.com
Last edited:
Well now, that is worth doing the hack for.
Where to get a longer chain? LOL
You like?
I think my chain is 116 instead of the stock 114, butI buy 120 and cut to length
Attachments
FlatSix911
Well-Known Member
- Region
- USA
- City
- Silicon Valley
Nice... is your RF chainring original or replacement?
iskjone
Active Member
Wow Stefan, great job documenting and pointing out the simple complexity! Absolutely convinced me that I DO NOT want to mess with installing any type of speed box. I'll probably go with the magnet option before attempting eBike heart surgery. Congratulation and you owe your bother a case of his favorite.
Stefan Mikes
Gravel e-biker
- Region
- Europe
- City
- Mazovia, PL
Giant Trance E+ has a 36T 104 BCD chainring. It looks it is hard to find anything bigger, narrow-wide and 12-speed at the same time.
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