My Bafang Ultra Mountain Bike! Frey AM1000
- Thread starter robocam
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Animalector
10 kW
Looks the same as when it went in.. thats a good start..
Andy
Andy
robocam
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Haha, yes. Although, there is a scratch on the downtube, and now I see why. The hub of the front wheel was resting against it, and it appears a lot of pressure was placed on the box while it was on its side. The endcap of the front wheel axle is deformed. I'll have to take a picture of it. They should have put thicker foam wrap on the downtube.
Animalector said:
robocam
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I'll take a closer look. I have 2 bikes with Shimano M8000 XT components, so I can compare. I did ask them about the authenticity of the fork, and they assured me it was genuine.
The bike weighs 57 lbs/26 kg without the battery.
17 minutes remaining on upload.
The bike weighs 57 lbs/26 kg without the battery.
17 minutes remaining on upload.
oleaiz said:
Animalector
10 kW
biggest issue for me is that you're paying around $3k USD (ish???) for a bike that doesn't have full bearings in the rear linkage... I mean why not use them? all this money and technology and save $3 in bearing parts?
Anyways I really hope you enjoy riding it, I'm sure it's going to be a blast. I have a Bafang Max 250W and it is an awesome ride compared to the BBS02.. if you're a MTB rider who likes to pedal the Torque sensing motor is amazing.. plus you've got the throttle for when you get lazy.
looking forward to the Ride videos.
Andy
Anyways I really hope you enjoy riding it, I'm sure it's going to be a blast. I have a Bafang Max 250W and it is an awesome ride compared to the BBS02.. if you're a MTB rider who likes to pedal the Torque sensing motor is amazing.. plus you've got the throttle for when you get lazy.
looking forward to the Ride videos.
Andy
Animalector said:
From a purely engineering standpoint, ball/roller bearings are great for thing that rotate, smoothly (especially when over a few 100rpm), but suspension parts don't rotate, they oscillate; and they don't move smoothly, but rather get banged back and forth violently.
For these type of oscillating motions with very high shock loads and bushes are (in other engineering fields) the goto solution. And modern engineered plastics -- eg. UHDPE and similar -- are the goto material for bushes that run in environments where hermetic sealing isn't possible.
Bearings create point stresses under shock loads, where bushes spread the loading over a much larger area. Self-lubricating, much lower area loading, low part-count and maintenance free operation. What's not to like.
Animalector
10 kW
I've heard that argument before and I agree to a point... but often the Chinese manufacturers just use machined aluminium, possibly painted, poked through a hole in the frame that may or may not have been painted.
Not saying that's how these ones are, but on my bike that's what the bushing linkages are like.
I guess the proof that bearings work is that any name-brand bikes will use bearings throughout..
Anyway this is a bit off topic,
I would like to see these Frey linkages close up, possibly disassembled, so I can decide if I think they're going to last...
Andy
Not saying that's how these ones are, but on my bike that's what the bushing linkages are like.
I guess the proof that bearings work is that any name-brand bikes will use bearings throughout..
Anyway this is a bit off topic,
I would like to see these Frey linkages close up, possibly disassembled, so I can decide if I think they're going to last...
Andy
Animalector said:
Funnily enough, if the aluminium has been accurately machined and if it was anodised, it can produced an excellent bush. Anodising produces a ceramic surface with a hardness equivalent to 60-65 Rockwell; and a softish aluminium substrate provides resilience.
But it all comes down to the accuracy of the machining.
I send the message to Ivy about the bearings in the upper part of suspension. She reply I would like to tell you that all are with bearings SKF brand. The back point bearing is inside with a cover outside. She send me the picture of inside suspension. The new frame is made with bearings at all points.
Animalector
10 kW
Thats awesome news... Winner
melodious
100 kW
Looks from the video the gearing is a straight shot 30 mph. Increasing the front tooth count won't interfere with the frame either, but may touch the stock rear 2.8" tire. Looks compatible to midfat 3" tire category, but probably would find compatibility issues when going high tooth count & 3" wide moped tires.
Put a big toothed gear and see if she makes the 40 mph club?
That's. A. Shit. Ton. Of. Hangers. You. Have. There. :lol:
Put a big toothed gear and see if she makes the 40 mph club?
That's. A. Shit. Ton. Of. Hangers. You. Have. There. :lol:
robocam
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If it's anything like the BBSHD, I don't think this specific setup will be gear limited. A 30T chainring on a BBSHD going to an 11T cassette cog is gear limited at around 30 mph on a 29er (which has a similar outside tire diameter vs a 27.5+ tire). However, that was with 52V. I'll count the teeth, but it looks like it has around a 42T chainring. My BBSHD mtb topped out at around 35 mph on 52V. I'm going to guess that this bike will have a slightly lower top speed due to the lower voltage and slightly wider tires. Also, this is a completely different motor, so this is just speculation. I will try to test it out today.
Increasing the tooth count too much would cause the chainring to make contact with the chainstay. I will check to see if a larger chainring might fit.
I got a lot of hangers because I bent 4 on one of my other bikes in the last 2 years, so I wanted to make sure I have spares for a while. I wonder if they used a hanger design that's available from Wheels Manufacturing. I'll have to contact them to see
Increasing the tooth count too much would cause the chainring to make contact with the chainstay. I will check to see if a larger chainring might fit.
I got a lot of hangers because I bent 4 on one of my other bikes in the last 2 years, so I wanted to make sure I have spares for a while. I wonder if they used a hanger design that's available from Wheels Manufacturing. I'll have to contact them to see
melodious said:Looks from the video the gearing is a straight shot 30 mph. Increasing the front tooth count won't interfere with the frame either, but may touch the stock rear 2.8" tire. Looks compatible to midfat 3" tire category, but probably would find compatibility issues when going high tooth count & 3" wide moped tires.
Put a big toothed gear and see if she makes the 40 mph club?
That's. A. Shit. Ton. Of. Hangers. You. Have. There. :lol:
Hello everybody. It is so interesting to follow yours discussions. All of you have much of knowledge. I am learning myself by reading the forums.
As far as I understand you have got the battery and going out for the ride. Waiting impatiently your opinion about driving properties of your bike. Drive it hard and safe.
As far as I understand you have got the battery and going out for the ride. Waiting impatiently your opinion about driving properties of your bike. Drive it hard and safe.
Justin_Credible
1 µW
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Not sure if this info has been posted to this thread yet but it looks like the Ultra Max uses upgraded Bafang programming software that includes a page for torque sensor settings. I've been looking for a copy of this, so far with no luck. If anyone has a copy or knows where it can be gotten I'd be interested.
Thanks all the pioneers of this product for such a good and complete information.
At the momment my open issues are:
- a bit too heavy to be an aluminum frame but it looks rock solid in the other hand. Waiting for the weight including battery. I think the excess probably has to do with the difference in motor weight compare with a BBSHD
- components and finish look awesome for me
- transport damages does not seem to be important
- important pending issue is the capability to reprogram the controler and where is the appropiate sw. Looks like no comfirmation of this so far.
- anxious for a test ride review!
I'll appreciate so much if you can PM the final price of bike and transport.
Thanks a lot
At the momment my open issues are:
- a bit too heavy to be an aluminum frame but it looks rock solid in the other hand. Waiting for the weight including battery. I think the excess probably has to do with the difference in motor weight compare with a BBSHD
- components and finish look awesome for me
- transport damages does not seem to be important
- important pending issue is the capability to reprogram the controler and where is the appropiate sw. Looks like no comfirmation of this so far.
- anxious for a test ride review!
I'll appreciate so much if you can PM the final price of bike and transport.
Thanks a lot
robocam
10 kW
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Yes, the frame is a bit on the heavy side. I think it has to do with their use of many solid aluminum parts. For example, the suspension rocker is not hollowed out. I wonder if the front brace of the rear triangle is hollow.
The battery is 10.4 lbs/4.7 kg. That makes the total weight of the bike 67.4 lbs/30.6 kg.
If you think about it, let's say a typical MTB weighs 30 lbs. The Ultra is 11.7 lbs according to Karl.
https://electricbike-blog.com/2017/03/19/because-you-need-to-start-excersicising-more-than-just-your-thumb-bafang-1000w-max-ultra-torque-sensing-mid-drive/
Let's allow a couple lbs for the wiring and display.
30+11.7+10.4+2=54.1
67.4-54.1=13.3
So the bike weighs about 13 lbs more than a typical eMTB. I hope this contributes to increased durability =)
The battery is 10.4 lbs/4.7 kg. That makes the total weight of the bike 67.4 lbs/30.6 kg.
If you think about it, let's say a typical MTB weighs 30 lbs. The Ultra is 11.7 lbs according to Karl.
https://electricbike-blog.com/2017/03/19/because-you-need-to-start-excersicising-more-than-just-your-thumb-bafang-1000w-max-ultra-torque-sensing-mid-drive/
Let's allow a couple lbs for the wiring and display.
30+11.7+10.4+2=54.1
67.4-54.1=13.3
So the bike weighs about 13 lbs more than a typical eMTB. I hope this contributes to increased durability =)
Robleman said:
robocam
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Honestly, I need more time on the bike to make useful comments. I've only ridden it about 1.6 miles. I need to find a long stretch of flat land. Near my house, there is a flat road that ends with a slight hill. On that stretch of land I was able to reach 30.6 mph according to Strava.
I feel like there's some sort of current limit set a little low. If you look at the screenshot Frey provided of their programming software, it shows a current limit of 18A. If it is indeed limited to 18A, that would explain it. Frey says they're testing the software, so they should have it available soon.
Having said that, it feels like it has plenty of power for trail use. Once I go on an actual trail, I'll have a better impression.
I agree about the weight. Unless you're planning to jump the bike or race it, the extra weight really shouldn't have much of an impact on your riding. Its weight is comparable to a downhill ebike.
I feel like there's some sort of current limit set a little low. If you look at the screenshot Frey provided of their programming software, it shows a current limit of 18A. If it is indeed limited to 18A, that would explain it. Frey says they're testing the software, so they should have it available soon.
Having said that, it feels like it has plenty of power for trail use. Once I go on an actual trail, I'll have a better impression.
I agree about the weight. Unless you're planning to jump the bike or race it, the extra weight really shouldn't have much of an impact on your riding. Its weight is comparable to a downhill ebike.
oleaiz said:
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