Alexbn921
Well-known member
I wipe and lube after every ride. I like my drivertrain clean and noise free.It's not 25ish miles. Also why aren't belts all over the place in the bicycle world?
I wipe and lube after every ride. I like my drivertrain clean and noise free.It's not 25ish miles. Also why aren't belts all over the place in the bicycle world?
I put some images in the tech thread in motors.This sounds really promising and something I want on my next ebike. Interested to hear how it rides and how battery life compares to other ebikes.
Are there any pics of the other screen options and how they're mounted? I'd be keen to get away from a screen next to the grips and have something a bit more minimal for changing gears/modes.
I think they have an option for a top tube display and simple switch unit.Just after posting I saw some other pics in your first link in this thread, thanks!
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I guess you are going to want to see what gear you are in, I just want to get rid of anything that's likely to break off in a crash, and the screen next to the grip is still a bit exposed.
Maybe they can have something like the shimano screen tucked behind the bars, or just a set of LED's on the top tube for the future...
Still, it sounds like a big move forward
If you don’t want one, don’t buy one. For those of us that do, we can look forward to to it and talk about it until they arrive.More I read about integrated motor and gearbox units, more skeptical I become about the value add.
In my opinion, it's basically introducing more mechanical complexity, slapping more electronics prone to failure, making your bike's transmission more difficult to repair (on your own), creating a single point of failure, and all this at a higher cost!
Aren't we talking about ebikes here, and not about high powered motorcycles that would clearly justify the need of a gearbox?
C'mon, this sounds to me more like luxury than anything essential on eMTBs... It'll good for the business though!
Well seeing as EMTB's are not essential at all then I don't understand your point.More I read about integrated motor and gearbox units, more skeptical I become about the value add.
In my opinion, it's basically introducing more mechanical complexity, slapping more electronics prone to failure, making your bike's transmission more difficult to repair (on your own), creating a single point of failure, and all this at a higher cost!
Aren't we talking about ebikes here, and not about high powered motorcycles that would clearly justify the need of a gearbox?
C'mon, this sounds to me more like luxury than anything essential on eMTBs... It'll good for the business though!
I feel like the time when most of the great sports cars went dual clutch (paddle shifting) something about a manual transmission on a race track… we know that the twin clutch cars were faster but took shifting and dumbed it down.This is exciting
Pinion drop massive bombshell - Integrated EMTB Gearbox & Motor
It's about €1069 . So ballpark about the same as a Gen4, EP8, Mag S.and all this at a higher cost!
C'mon, this sounds to me more like luxury than anything essential on eMTBs... It'll good for the business though!
It’s no different in principle to SRAM AXS. You still press the shift button and it’ll shift a gear. Up or down. The actual process of shifting and the feel is very similarI feel like the time when most of the great sports cars went dual clutch (paddle shifting) something about a manual transmission on a race track… we know that the twin clutch cars were faster but took shifting and dumbed it down.
Now to EMTBs. I get it that this is progress but I like the work of shifting and being caught off guard from time to time. I need the mental stimulation. I know we will all get use to it and will be faster but with some progress the shift may be a down shift. Peace
If this is Mountain Biking for you, you really want to consider riding some different trails.I like the work of shifting and being caught off guard from time to time. I need the mental stimulation.
More I read about integrated motor and gearbox units, more skeptical I become about the value add.
In my opinion, it's basically introducing more mechanical complexity, slapping more electronics prone to failure, making your bike's transmission more difficult to repair (on your own), creating a single point of failure, and all this at a higher cost!
Aren't we talking about ebikes here, and not about high powered motorcycles that would clearly justify the need of a gearbox?
C'mon, this sounds to me more like luxury than anything essential on eMTBs... It'll good for the business though!
Not one NHRA Pro Stock Motorcycle uses a belt for better efficiency...They are not strong enough....Way to cherry pick an example. Lets talk specific's. A gates belt drive on a bike requires no maintenance and lasts 10,000+ miles. A chain needs to be lubed every 25ish miles with a full clean every 500 miles. They also only last about 2500 miles.
At power levels greater than 250ish watts belts are also more efficient.
Better on maintenance and better on longevity. Overall, significantly cheaper to run.
I get that but it certainly doesn't have to be depending on the ride. I hot wax mine till winter.I wipe and lube after every ride. I like my drivertrain clean and noise free.
Is that because they aren't strong enough perhaps?Not one NHRA Pro Stock Motorcycle uses a belt for better efficiency...They are not strong enough....
Another great example. You're on a roll dude. I'll make sure to use a chain on my drag eMTB.Not one NHRA Pro Stock Motorcycle uses a belt for better efficiency...They are not strong enough....
I have a very hard time running XX1 on an ebike that seems to wear out parts at a very accelerated rate. I looks like the pinon MGU is cheaper than a Sram drivetrain and it includes the motor.Just been looking at some weights. And costs.
Pinion 12 Speed MGU: 4.1 KG
720Wh 48v Battery: 3.8 KG
Total: 7.9KG
Bosch CX: 2.9KG
Bosch 36v 750Wh: 4.4KG
Total: 7.3KG
Pinion system is 600g heavier, but there’s no need for a derailleur or cassette. Caveat; there is a chainring at the back for the belt that I’ve not factored in.
SRAM XX Cassette: 384g
SRAM XX Mech: 472g
Total: 845g
Additional Cost (£1285 RRP)
So Bosch CX, 750wh and XX Transmission: 8145g
Pinion system and 720Wh battery: 7900g
I didn’t factor in the chain or belt, but a SRAM XX chain is 239g. From what I can see a Gates Carbon belt is 88g. So even more weight saving there.
All in the Pinion potentially will be quite a bit lighter than SRAM’s premium drivetrain and CX motor system.
+185g for SRAM XX Bosch 34t chainring (I forgot to add that to my calcs!).Well done Rob, been thinking about doing it yesterday as I had a feeling it could be close, decided to add up to your calculation, so checked the approximate weights of the gates rear and front sprockets as the front sprocket is probably not included into the MGU weight. There is also the belt tensioner and the belt snubber at the rear.
Rear sprockets: https://www.bike24.com/p2141322.html
Front sprockets: https://www.bike24.com/p2181007.html
- 22-Teeth CDX - 63g
- 24-Teeth CDX - 73g
- 26-Teeth CDX - 103g
Belt tensioner: PINION BT1 Riemenspanner für Gates Riemen - Bikebude24 - Shop, 114,98
- 39 teeth - 63 g
- 46 teeth - 95 g
- 50 teeth - 84 g
Gates Belt Snubber: https://www.bike24.com/p2141597.html
- Pinion BT1-Riemenspanner - 190 g
- Gates Carbon drive Snubber - 42 g
So adding these into the calculation(using the happy medium as I do not know which tooth count sprockets are being used) it adds up to:
It all comes pretty much even
- Pinion 12 MGU, FIT 720Wh 48v Battery, Gates belt & sprockets: 8388 g
- Bosch CX, 750wh and XX Transmission: 8384 g
All motors are variable speeds. It's not the motor that needs the gearbox (or derailleur and cassette), it's your legs. Because an E-MTB are pedal assist you need to keep your cranks in a comfortable cadence, that is why you need gears of some sort. If you just purely had a motor driving the bike (a motorcycle) you wouldn't need any gears.Is there a variable speed motor that senses what output is required & supplies it that could eliminate the need for a gearbox? Seems to me all the required sensors & software is there just not the motor.
Awesome, so the MGU is still a few grams ahead ... for your second point yeah exactly I know, the MGU is basically a no brainer...of course after some first real world reviews...+185g for SRAM XX Bosch 34t chainring (I forgot to add that to my calcs!).
Ps - XX Transmission group set for Bosch is £1800 RRP.
Rob, if you haven’t already done so, please talk to Leo about this and see if you can nudge him in the right direction to either use the Pinion MGU with belt drive, or see how close Bosch is to developing their own and tell him we want it in the Voima or Sonni! either one or both! Since I already have the race pack Voima, I’d get the DH Sonni.+185g for SRAM XX Bosch 34t chainring (I forgot to add that to my calcs!).
Ps - XX Transmission group set for Bosch is £1800 RRP.
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