My Bafang Ultra Mountain Bike! Frey AM1000

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FREYebikes   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by FREYebikes » May 01 2018 9:17pm

Hi,

As you purchased only the frame with motor system and battery. We can't built the whole bike, adjust details and test in our side. Could you please help to build the whole bike and adjust it in the best condition to see how it works then? if there is any issue or problem. We will support you promptly. Please don't worry. We are always available!

Ivanovitch_k wrote:
May 01 2018 12:26pm
Hi guys,

i just got my am1000 frame and it appears the swingarm got banged up during transit.

am1000dmg - 5.jpg
am1000dmg - 4.jpg

An offset like that seems pretty strange.

When disassembled, I noticed the rocker/link has to be compressed & pushed to the left pretty hard in order for it to fit back in the seat stay anchors. Compared to other FS frames it does not feel right at all to me :?

am1000dmg2 - 1.jpg


Also, there is a bearing screw that protudes out of the frame even when screwed correctly, wtf ?

edit: checked it thoroughly, this is by design, can't do nothing about it.
Grit will accumulate here, even if the bearing is sealed this is meh.

am1000dmg2 - 3.jpg


Could you guys look at your frames to see wether or not this is *normal* ?

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by dalysea » May 02 2018 12:57pm

Ivanovitch_k wrote:
May 01 2018 12:26pm
Could you guys look at your frames to see whether or not this is *normal* ?
Here is a photo of the bearing screw from an AM1000 that was assembled by someone from Frey, so it appears you have assembled it correctly. In other words, if it is a flaw, it is a design flaw, not a build flaw.
am1000_bearing.jpg
am1000_bearing.jpg (96.79 KiB) Viewed 885 times
edit: oops, sorry, just saw your edit that you already figured out it was by design


-Sean
SF Bay Area, California
Last edited by dalysea on May 02 2018 1:07pm, edited 1 time in total.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by dalysea » May 02 2018 1:07pm

Hardcore wrote:
May 01 2018 9:30am
Also, what rim width does the bike come with?
No label on the rims, but I measured as best I could without removing the tire and they appear to be 40mm width outer edge.

-Sean
SF Bay Area, California

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by dalysea » May 02 2018 1:49pm

Since Frey intends to begin ramping up production on the fat tire version of this bike, I'm wondering if there is any value in providing feedback on potential options to mitigate the so-called "self-steer" when riding on asphalt? I realize I'm not using the fat tires on the riding surface for which they were intended, but in other forums I've heard some people suggest that rim width and tire selection can almost eliminate the issue. And yet other people say it could just depend on the weight of the bike and the person riding it.

When I ride the Frey fat tire bike with the Maxxis fat tires on the road, I find that I'm fighting to keep the handlebar straight, the bike has a mind of its own. So does anyone have any suggestions we could provide to Frey, anything that has worked for people in this forum? Would changing to a longer stem reduce the issue? Some quotes below just from me doing a search:

"Vee Rubber Mission 4.0 - bad self steer"
"VeeRubber H-Billie 4.0 - moderate self steer"
"Schwalbe Jumbo Jim Snakeskin 4.0 - moderate self steer (this was the gen one JJ, not the new addix)"
"45Nrth Vanhelga 4.0 120 tpi - virtually no self steer"

"Maxxis Mammoths ... horrible for self-steer"

"Jumbo jims ... some of the lowest self steer Ive ever dealt with. Only fat tires I have been able to ride no hands"

"You want a demo of self steer, mount up some original Surly Endomorphs. they go everywhere you are not aiming. horrifying"

"My Barbagazzi's have zero self steer down on pavement down to 4 psi - haven't ridden them below that."



Thanks,
Sean
SF Bay Area, California

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fechter   100 GW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by fechter » May 02 2018 2:56pm

To get a real comparison between different tires, you need the same bike and same rider to evaluate. The frame geometry and tire pressure has an effect on self steer also.

That said, I have some Kenda Juggernauts on my fat bike and they seem fine on pavement but do self steer a bit on dirt. I just chalk it up to riding skill. A really skillful rider can probably deal with any amount of self steer.
"One test is worth a thousand opinions"

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Ivanovitch_k » May 02 2018 4:03pm

FREYebikes wrote:
May 01 2018 9:17pm
As you purchased only the frame with motor system and battery. We can't built the whole bike, adjust details and test in our side. Could you please help to build the whole bike and adjust it in the best condition to see how it works then? if there is any issue or problem. We will support you promptly. Please don't worry. We are always available!
I will give you the benefit of the doubt. For now, I'm waiting a Rohloff IGH* to start lacing the wheels, then I will see how the frame behaves.

Though, can you make sure the swing arm to seat stay offset/bending is normal on other frames ?

dalysea wrote:
May 02 2018 12:57pm
Here is a photo of the bearing screw from an AM1000 that was assembled by someone from Frey, so it appears you have assembled it correctly. In other words, if it is a flaw, it is a design flaw, not a build flaw.
yes, this protuding screw design is unfortunate indeed :|

But I'm more concerned about the swing arm look. Never saw something like that to be honest :shock:

I reckon I would probably have overlooked it on a complete bike, but the fact that it scratched the seat tube only on one side during transit made me look into it...

Image

Image

Image


Will probably make a build thread here for other interested. The AM1000 frame will be outfitted with premium stuff:
a Rohloff Speedhub laced on 35mm-wide DT-swiss e-bike hardened rims + e-bike hardened version of the fox 36 fork + fox DHX2 coil shock
should be sweet :D !
BBS'ed Radon ZR Team 8:
BBS02B 750W - DPC750C - 48V 17.5Ah GA shark - 11 spd 11-40 Shimano XT, 42T N-W Precialps CW, KMC X11e chain, Gearsensor, XT RD, XTR Shifter, F Saint Brake, R XT Brake, RT99 200/160 Discs, magnetic shutoff, DT Swiss X1900 QR9 wheels, Manitou M30 air fork, 2.4" slick balloon schwalbe Super Moto X tires @2 bars, Suntour NCX suspension seatpost, ergon SFC3 saddle, ergon GP3 grips, Supernova M99 Pro + E12 Taillight

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by FREYebikes » May 03 2018 2:08am

I see. Will pay more attention in this point following.
Ivanovitch_k wrote:
May 02 2018 4:03pm
FREYebikes wrote:
May 01 2018 9:17pm
As you purchased only the frame with motor system and battery. We can't built the whole bike, adjust details and test in our side. Could you please help to build the whole bike and adjust it in the best condition to see how it works then? if there is any issue or problem. We will support you promptly. Please don't worry. We are always available!
I will give you the benefit of the doubt. For now, I'm waiting a Rohloff IGH* to start lacing the wheels, then I will see how the frame behaves.

Though, can you make sure the swing arm to seat stay offset/bending is normal on other frames ?

dalysea wrote:
May 02 2018 12:57pm
Here is a photo of the bearing screw from an AM1000 that was assembled by someone from Frey, so it appears you have assembled it correctly. In other words, if it is a flaw, it is a design flaw, not a build flaw.
yes, this protuding screw design is unfortunate indeed :|

But I'm more concerned about the swing arm look. Never saw something like that to be honest :shock:

I reckon I would probably have overlooked it on a complete bike, but the fact that it scratched the seat tube only on one side during transit made me look into it...

Image

Image

Image


Will probably make a build thread here for other interested. The AM1000 frame will be outfitted with premium stuff:
a Rohloff Speedhub laced on 35mm-wide DT-swiss e-bike hardened rims + e-bike hardened version of the fox 36 fork + fox DHX2 coil shock
should be sweet :D !

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by FREYebikes » May 03 2018 2:14am

We are having a "sister model" with AM1000 in same Geometry buy different outlook design, would like to share with friends here. some photos following, how do you think about it?
IMG_20180503_143408.jpg
IMG_20180503_143301.jpg
IMG_20180503_143339.jpg
IMG_20180503_143332.jpg
IMG_20180503_143624.jpg
IMG_20180503_143634.jpg

Rube   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Rube » May 03 2018 2:25am

Very nice but battery in the same colour would make it look better.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by nieles » May 03 2018 4:00am

so what's the difference exactly? the only difference i see is in the corner of the frame at Top tube / seat tube. there is a small triangle created on the yellow frame i didn't see on the previous pictures.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Jebu » May 03 2018 3:09pm

The original cassette after a week of use.

Image

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by qqquent » May 03 2018 5:11pm

Jebu, do you know what caused this?

I'm also having issues with my AM1000 and think a worn out cassette is to blame. I did a rather thorough alignment of the derailleur last night and still have issues this morning. Hard to believe the cassette is already bad as this is only the third time I've ridden the bike. The chain skips on the two highest gears (the smallest cogs) when pedaled hard. It's bad enough that I can't use the highest gear.

Did you order a new cassette? If so, what did you get?

Hope this issue isn't ongoing.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Jebu » May 03 2018 5:29pm

I'm testing somethings. I don't think the cassette is the problem.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Animalector » May 03 2018 5:45pm

check the hubs for loose bearings, we bought some ebikes with Novatec hubs, and they were not particularly high-end, anyway, the slack in the hubs' bearings would deform the cassete alignment and result in chain jumping issues. New quality hub and cassette and problem is gone, with all of the identical drive train.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by qqquent » May 03 2018 7:09pm

Thanks for the reply. How would you check the hub for loose bearings?

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by FREYebikes » May 03 2018 7:18pm

Very strange, we have never sold any of our AM1000 come with this kind of black cassette. All we sold out earlier is SHIMANO in silver color.
If you got the bike from some distributor, please check with the distributor.
Thank you for all friends' attention here!
Jebu wrote:
May 03 2018 3:09pm
The original cassette after a week of use.

Image

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Drop Dead Fred » May 04 2018 12:03am

Hey q,

I believe you probably have an adjustment problem. While I prefer SRAM and it is mainly because I seem to knock Shimano out of adjustment regularly as they seem to be a bit finicky. Did you have a bike shop set your bike up? You might want to take it down to a shop and get a tune just to be sure and they will let you know if something is having an issue.

Fred
qqquent wrote:
May 03 2018 5:11pm
Jebu, do you know what caused this?

I'm also having issues with my AM1000 and think a worn out cassette is to blame. I did a rather thorough alignment of the derailleur last night and still have issues this morning. Hard to believe the cassette is already bad as this is only the third time I've ridden the bike. The chain skips on the two highest gears (the smallest cogs) when pedaled hard. It's bad enough that I can't use the highest gear.

Did you order a new cassette? If so, what did you get?

Hope this issue isn't ongoing.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Drop Dead Fred » May 04 2018 12:06am

Mine's silver, also looks like the number 1 gear is smaller too?
FREYebikes wrote:
May 03 2018 7:18pm
Very strange, we have never sold any of our AM1000 come with this kind of black cassette. All we sold out earlier is SHIMANO in silver color.
If you got the bike from some distributor, please check with the distributor.
Thank you for all friends' attention here!
Jebu wrote:
May 03 2018 3:09pm
The original cassette after a week of use.

Image
Attachments
IMG_20180405_115651.jpg
IMG_20180405_115651.jpg (217.53 KiB) Viewed 792 times

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Jebu » May 04 2018 1:24am

It's silver, the smartphone camera turned it black. It's the shimano 11-36 v10 original.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by agedashidofu » May 04 2018 2:48am

Drop Dead Fred wrote:
May 04 2018 12:03am
Hey q,

I believe you probably have an adjustment problem. While I prefer SRAM and it is mainly because I seem to knock Shimano out of adjustment regularly as they seem to be a bit finicky. Did you have a bike shop set your bike up? You might want to take it down to a shop and get a tune just to be sure and they will let you know if something is having an issue.

Fred
qqquent wrote:
May 03 2018 5:11pm
Jebu, do you know what caused this?

I'm also having issues with my AM1000 and think a worn out cassette is to blame. I did a rather thorough alignment of the derailleur last night and still have issues this morning. Hard to believe the cassette is already bad as this is only the third time I've ridden the bike. The chain skips on the two highest gears (the smallest cogs) when pedaled hard. It's bad enough that I can't use the highest gear.

Did you order a new cassette? If so, what did you get?

Hope this issue isn't ongoing.
Would it help to go easier on the power when changing gears? This motor has like 160nm torque - so with that kind of power, it would be really punishing on the cassettes i would imagine.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Jebu » May 04 2018 3:21am

The problem is that the swingarm does not support the force of the motor and it flexes. This causes the cassette to receive a lateral force for which it is not prepared.

You can test it locking the front wheel, the rear with a lot of grip and use the throttle. You can see how the swingarm flexes.

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fechter   100 GW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by fechter » May 04 2018 7:51am

Jebu wrote:
May 04 2018 3:21am
The problem is that the swingarm does not support the force of the motor and it flexes. This causes the cassette to receive a lateral force for which it is not prepared.

You can test it locking the front wheel, the rear with a lot of grip and use the throttle. You can see how the swingarm flexes.
You could get a lot of lateral force if the chain line was extreme. Probably a lot more than frame flex would cause.
"One test is worth a thousand opinions"

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by qqquent » May 04 2018 10:02am

agedashidofu wrote:
May 04 2018 2:48am
Drop Dead Fred wrote:
May 04 2018 12:03am
Hey q,

I believe you probably have an adjustment problem. While I prefer SRAM and it is mainly because I seem to knock Shimano out of adjustment regularly as they seem to be a bit finicky. Did you have a bike shop set your bike up? You might want to take it down to a shop and get a tune just to be sure and they will let you know if something is having an issue.

Fred
qqquent wrote:
May 03 2018 5:11pm
Jebu, do you know what caused this?

I'm also having issues with my AM1000 and think a worn out cassette is to blame. I did a rather thorough alignment of the derailleur last night and still have issues this morning. Hard to believe the cassette is already bad as this is only the third time I've ridden the bike. The chain skips on the two highest gears (the smallest cogs) when pedaled hard. It's bad enough that I can't use the highest gear.

Did you order a new cassette? If so, what did you get?

Hope this issue isn't ongoing.
Would it help to go easier on the power when changing gears? This motor has like 160nm torque - so with that kind of power, it would be really punishing on the cassettes i would imagine.
You’re probably right. Time to take it to a shop. I’ll let everyone know what I find out.

The issue is happening once I’m already in gear, pedaling with some resistance, the chain skips regularly. Especially bad on the highest gear but has started happening on the second highest as well.

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Jebu » May 04 2018 10:24am

fechter wrote:
May 04 2018 7:51am
Jebu wrote:
May 04 2018 3:21am
The problem is that the swingarm does not support the force of the motor and it flexes. This causes the cassette to receive a lateral force for which it is not prepared.

You can test it locking the front wheel, the rear with a lot of grip and use the throttle. You can see how the swingarm flexes.
You could get a lot of lateral force if the chain line was extreme. Probably a lot more than frame flex would cause.
The forces are added at that moment. The chain line isn't always perfect

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Ambient2010 » May 04 2018 10:43am

I had problems with the XT and the 11er cassette to adjust it clean. Meanwhile, I have found a good attitude. At first I also had 2 times that the chain jumped under a lot of load. Now that the show has been readjusted and better adjusted, I no longer have skipping.
Also very important after delivery of the bike is to check all screws also from the rear of the suspension that they are tightened with the right force. Because they are sometimes quite loose and the backbone strongly entwined. After properly tightening all screws, this is only minimal.
I drove a Haibike 7.0 in which the rear has also slightly warped when accelerating.

LG Daniel

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