Mid Drive shoot-out: Bosch vs Shimano vs Brose vs Yamaha
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Manu
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In these statistics we always forget to test the performance of the pedelec with the system turned off. We have in mind that we will always have assistance and that is a mistake.
When a pedelec is without assistance is 22kg is very important to have a good group plate and cassette to continue and pedal less unless cadence giving the same speed.
Page in Spanish
https://bicicletaselectricasbarcelo...otores-emtb-2017-yamaha-pw-xbosch-cx-brose-2/
The difference between the 3 pedelec is the engine and the wheel of 27,5+ "2 pedelec 2,80 1 pedelc bosch 2.35 in the pedelc with bosch engine that is more rolling than the 27; 5 +.
the brose all things equal,the brose does not follow the rhythm of yamaha and bosch.
and that makes you work much more, it is the most natural of all the engines when pedaling.It is the more silence.
It has the first place in autonomy because it has a battery of 650w against 500w of the others, if it had the same 500w it would be in third place.
The bosch is the least natural engine of all when pedaling,the Bosch engine spends more battery than Yamaha and less than BROSE
it is a very sporty and forceful engine when delivering power.
Yamaha, the first impression is that in its level 5 of assistance is a shot, which reaches up to 120 rpm vs PW version, a very sporty version that adapts to many customer profiles. It is the least silent of the 3 engines.
At the end of the climb 2 battery lines could do even 15km + minimum with the highest level of assistance.
the conclusion is that the 3 are good engines there is no clear profile. The pw-x has more possibilities to adjust to the profile of the client.
When a pedelec is without assistance is 22kg is very important to have a good group plate and cassette to continue and pedal less unless cadence giving the same speed.
Page in Spanish
https://bicicletaselectricasbarcelo...otores-emtb-2017-yamaha-pw-xbosch-cx-brose-2/
The difference between the 3 pedelec is the engine and the wheel of 27,5+ "2 pedelec 2,80 1 pedelc bosch 2.35 in the pedelc with bosch engine that is more rolling than the 27; 5 +.
the brose all things equal,the brose does not follow the rhythm of yamaha and bosch.
and that makes you work much more, it is the most natural of all the engines when pedaling.It is the more silence.
It has the first place in autonomy because it has a battery of 650w against 500w of the others, if it had the same 500w it would be in third place.
The bosch is the least natural engine of all when pedaling,the Bosch engine spends more battery than Yamaha and less than BROSE
it is a very sporty and forceful engine when delivering power.
Yamaha, the first impression is that in its level 5 of assistance is a shot, which reaches up to 120 rpm vs PW version, a very sporty version that adapts to many customer profiles. It is the least silent of the 3 engines.
At the end of the climb 2 battery lines could do even 15km + minimum with the highest level of assistance.
the conclusion is that the 3 are good engines there is no clear profile. The pw-x has more possibilities to adjust to the profile of the client.
Trail Cruiser
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Use caption for English translation. All three riders concluded that the Bosch is the most powerful and the most fun to ride. Yamaha is limited to 80 rpm cadence and thus needs to shift frequently. Brose is very silent.
Trail Cruiser
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The CX continues to power at higher cadence range and consistently winning the acceleration test. PW-X loses support at higher RPM. PW-X is still a good motor but not for racing since it forces the rider to pedal at a lower cadence. Both riders liked the fast and sporty performance of the CX.
Trail Cruiser
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Manu
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One thing is the design of the drive unit that consumes more or less watts and another the new levels of force in kilos that it moves.
Bosh CX 350 w in design and el PWX is 250 w in design.
For 25km / h it is perfect.
for 50km / h the drive unit with more consumption design will give better result in acceleration and top speed,
but less range in kilometers with the same battery of 500w / h.
An R-pedelec spitzing with drive unit 850w and maximum speed is 76km / h and 120nm ...... with 850watts of battery as much goes 76km or less and that is a designed to work if or if at that speed.
.....this is racing.
An unlocked model is not designed to work 24h/7 days a week to 50km/h.
the unlocked 50km / h profile is only suitable on flat terrain with routes of a few kilometers, because the wattage consumption is so high that you reduce the range in kilometers with the battery up to 2/3 and that profile is not suitable for climbing a mountain.
If your climbing the montseny with a route of 30km and 1600 meters of altitude with bosh normal pedelc to 25km / h you arrive with battery for 6kilometers more in the bosh cx, using the unlocked at 50km / h you do not arrive with battery to the top, you stay walking with 24 kilos in your hands,
It's for bosh, brose and yamaha,shimano,etc
The option is to put 500 w more battery and 3 kilos more,a more speed,more battery.
A pedelec climbing the mountain, without assistance weighs 23 or 24 kilos.
The strongest and most critical point of a pedelec is climbing the mountain where it overcomes the conventional cyclist. Not so down road where a cyclist can have up to 100km / h.
Pedelec climbing
Bosh CX 350 w in design and el PWX is 250 w in design.
For 25km / h it is perfect.
for 50km / h the drive unit with more consumption design will give better result in acceleration and top speed,
but less range in kilometers with the same battery of 500w / h.
An R-pedelec spitzing with drive unit 850w and maximum speed is 76km / h and 120nm ...... with 850watts of battery as much goes 76km or less and that is a designed to work if or if at that speed.
An unlocked model is not designed to work 24h/7 days a week to 50km/h.
the unlocked 50km / h profile is only suitable on flat terrain with routes of a few kilometers, because the wattage consumption is so high that you reduce the range in kilometers with the battery up to 2/3 and that profile is not suitable for climbing a mountain.
If your climbing the montseny with a route of 30km and 1600 meters of altitude with bosh normal pedelc to 25km / h you arrive with battery for 6kilometers more in the bosh cx, using the unlocked at 50km / h you do not arrive with battery to the top, you stay walking with 24 kilos in your hands,
It's for bosh, brose and yamaha,shimano,etc
The option is to put 500 w more battery and 3 kilos more,a more speed,more battery.
A pedelec climbing the mountain, without assistance weighs 23 or 24 kilos.
The strongest and most critical point of a pedelec is climbing the mountain where it overcomes the conventional cyclist. Not so down road where a cyclist can have up to 100km / h.
Pedelec climbing
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Trail Cruiser
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These new generation mid drives are equally efficient (in the low to mid 80% efficiency) on converting electrical energy from the battery into mechanical energy at the motor.
Talking about distance traveled per watt-hour energy from your battery, it all now depends on how much power you release to the motor. It may sound complicated if you think too much about it and consider all the details. But the bottom line is (and this is more obvious to the non technical people), is that these energy mainly come from the battery (plus the rider's effort).
In simpler terms, the more powerful the motor is, the more energy is consumed from the battery. However, since these are equally efficient mid drives, if you lower the power of the stronger motor to match to that of the weaker motor, both will have the same range. It all now depends on the rider's preference and discipline to resist the urge of pushing that "turbo" button (the super fun mode).
Last edited:
Manu
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the 80% efficiency of the drive unit is only under some parameters, it is between a minimum of watts and 100% watts of drive unit design, when it goes down or exceeds those watts the drive unit is no longer 80%,
too much weight already low that range and that measured on flat terrain, when you are climbing the mountain the efficiency of 80% does not exist even in the best parameters that can be put on flat ground. To circulate at 50KM / h the drive unit design is a 500w, it plays at 10w per km unit and of course you already need 1000 watts of battery.
too much weight already low that range and that measured on flat terrain, when you are climbing the mountain the efficiency of 80% does not exist even in the best parameters that can be put on flat ground. To circulate at 50KM / h the drive unit design is a 500w, it plays at 10w per km unit and of course you already need 1000 watts of battery.
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