My Bafang Ultra Mountain Bike! Frey AM1000

Discussions related to motors other than hub motors.
This includes R/C motors, botttom bracket, roller and geared drives.
Stanleybb50   100 mW

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Re: Frey AM1000 Road Ride with my cycle club today

Post by Stanleybb50 » Jul 20 2019 2:19pm

Sinbord1981 wrote:
Jul 20 2019 1:06pm
Stanleybb50 wrote:
Jul 20 2019 11:49am
That's glorious! Snap a fresh pic of the bike as well? 😁
Did you see my video from the other day Stanleybb50?
Oh yes! I did see that. I'll likely watch it a few more times too. All the pics I need right in there. Great all around video. Well done and it makes me even more excited.

I might have mine in the next 2 weeks. 👍😁

jeron   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by jeron » Jul 20 2019 3:34pm

What tire pressures do you guys run?

Sinbord1981   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Sinbord1981 » Jul 20 2019 4:27pm

jeron wrote:
Jul 20 2019 3:34pm
What tire pressures do you guys run?
35psi on the road and gravel/bridleways. 25-ish off-road and boggy.

Hardcore   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Hardcore » Jul 20 2019 4:34pm

17 psi up front, 20 psi rear with tubes

cvin   10 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cvin » Jul 22 2019 12:02am

I started a bafang ultra programming thread since so much good info is scattered through this 59 page frey bike thread but is hard to find

If anyone can add their settings, links or tips to the programming thread that would be great

jeron   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by jeron » Jul 22 2019 2:57am

cvin wrote:
Jul 22 2019 12:02am
I started a bafang ultra programming thread since so much good info is scattered through this 59 page frey bike thread but is hard to find

If anyone can add their settings, links or tips to the programming thread that would be great
https://www.endless-sphere.com/forums/v ... 28&t=99669

cvin   10 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cvin » Jul 22 2019 3:35am

Thanks Jeron

Not much on that thread, except about battery cut off

but maybe it will get bigger

I am too busy with work the next 2 weeks but maybe after that i can copy some of those programming posts over into this thread or the one you referenced

arrowrod   10 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by arrowrod » Jul 22 2019 7:16pm

I have received my Frey AM1000. Replaced the tires with Schwalbe Moto-x 27.5x2.8. Failed at making them tubeless. The rims have a "slit" (where the rim is joined in a hoop) in the rim that leak. Frey insisted that their rims can't be made tubeless. Put a 53 tooth chainring on. Changed the handlebars and put an extended stem on.
I chug along at 25 mph (in Florida), with a smile on my face.
The battery charger has a fan, which charges in a couple of hours. It says its 2 amps.
I have a 52v battery.
Yellow...

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efMX Trials Electric Freeride   1 MW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by efMX Trials Electric Freeride » Jul 22 2019 7:48pm

arrowrod wrote:
Jul 22 2019 7:16pm
I have received my Frey AM1000. Replaced the tires with Schwalbe Moto-x 27.5x2.8. Failed at making them tubeless. The rims have a "slit" (where the rim is joined in a hoop) in the rim that leak. Frey insisted that their rims can't be made tubeless. Put a 53 tooth chainring on. Changed the handlebars and put an extended stem on.
I chug along at 25 mph (in Florida), with a smile on my face.
The battery charger has a fan, which charges in a couple of hours. It says its 2 amps.
I have a 52v battery.
Yellow...
you might be able to seal the rims join seam with epoxy, etc for another tubeless attempt..
post some pics..
some ride & sk8 videos:
metacafe.com/channels/NATAS666DAMIEN
http://www.youtube.com/natas666damien
i have nothing for sale.. :)

Razerr   1 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Razerr » Jul 23 2019 3:23am

arrowrod wrote:
Jul 22 2019 7:16pm
I have received my Frey AM1000. Replaced the tires with Schwalbe Moto-x 27.5x2.8. Failed at making them tubeless. The rims have a "slit" (where the rim is joined in a hoop) in the rim that leak. Frey insisted that their rims can't be made tubeless. Put a 53 tooth chainring on. Changed the handlebars and put an extended stem on.
I chug along at 25 mph (in Florida), with a smile on my face.
The battery charger has a fan, which charges in a couple of hours. It says its 2 amps.
I have a 52v battery.
Yellow...
53T chainring? Howly hell, what is the topspeed with this monster and did you make any modifications to it? Can you link the handlebars and stem you fitted?
My charger is 5 amps?? strange. bc my bike is 1 month old.

Enjoy, it's a beast!

Hardcore   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Hardcore » Jul 24 2019 1:47am

two new videos of the frey am1000, now on some rocky trails along the top of a mountain ridge.



cscscs   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cscscs » Jul 25 2019 12:26am

Hey all - I'm in the process of building an ultra-based bike using a frame sourced from Frey and having a heck of time finding a chainring+adapter designed for boost (148mm) spacing. Frey tells me they cannot provide this crucial missing link - anyone know of source for this part?

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El_Topo   1 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by El_Topo » Jul 25 2019 3:30am

cscscs wrote:
Jul 25 2019 12:26am
Hey all - I'm in the process of building an ultra-based bike using a frame sourced from Frey and having a heck of time finding a chainring+adapter designed for boost (148mm) spacing. Frey tells me they cannot provide this crucial missing link - anyone know of source for this part?
If I am not mistaken the adapter you are talking about is a "spider". I can't tell you where to get it but it seems we are basically faced with the same issue (this post and ff).

donnod   1 µW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by donnod » Jul 31 2019 3:38pm

What is the max width for tires on the HT1000?
On the website they seem to write something about 2.8". I wonder if more is possible...would be great.

Stanleybb50   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Stanleybb50 » Jul 31 2019 4:25pm

Isn't boost 148 becoming common lately?

cscscs   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cscscs » Aug 01 2019 2:36pm

HT1000.jpg
148mm
HT1000.jpg (272.66 KiB) Viewed 1194 times

cscscs   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cscscs » Aug 01 2019 2:59pm

You can double the life of your battery by charging at a lower rate and to 80%. I got an adjustable ("smart") charger from Luna cycle and charge my 17.5ah battery overnight at 1A to 80% (with occasional charge to full to trigger balancing) - e.g.:https://lunacycle.com/luna-charger-52v- ... e-charger/
charging rate considerations: https://www.electricbike.com/ebike-char ... t-or-slow/

Hardcore   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Hardcore » Aug 01 2019 3:47pm

won't the battery technology be outdated by the time these batteries will reach their end? I've got about nearly 500 cycles on mine and no noticable decrease.

john61ct   100 GW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by john61ct » Aug 01 2019 3:50pm

Actual 80% as in usable SoC is not needed to sacrifice that much range.

Charge **to** 4.05 or 4.10Vpc, no holding Absorb will give you your longevity, likely only sacrificing 6-8% actual range.

Another factor is are C-rates, for charging 0.2-.3C is gentle enough.

Discharge rate and not going too low DoD is usually not so much in our control, other than carrying heavier packs around and shorter trips.

Stanleybb50   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Stanleybb50 » Aug 01 2019 4:41pm

Hardcore wrote:
Aug 01 2019 3:47pm
won't the battery technology be outdated by the time these batteries will reach their end? I've got about nearly 500 cycles on mine and no noticable decrease.
Wow that's great to hear for a number of reasons. 👍

FlyingFinn   100 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by FlyingFinn » Aug 03 2019 3:20am

Just ordered the FAT1000 complete bike. Tried to order the bare frame but they wouldn’t sell it. In a way compared to the frame+bafang -combo the whole bike’s price is cheap. The price difference is less than when all the other parts would be bought separately.

Stanleybb50   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by Stanleybb50 » Aug 04 2019 4:08pm

My AM1000 should be here Wednesday according to FedEx. 👍

Couldn't figure out how to upload here... Unless I went with the old image sharing sites like with forums 15 year ago. Lol. So here's a Google Photos link.

https://photos.app.goo.gl/b76oUBNseC9K8XD69

cscscs   100 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by cscscs » Aug 04 2019 7:04pm

Just completed a conversion of my FLX Blade (hardtail) - swapped all the parts (G510 motor, of course, reention battery, Magura mt5e brakes, Pike RCT 160mm front end, EX1 drive train.
The good: I am very pleased with the handling - of course I expected improved comfort with the addition of rear suspension, but I wasn't sure what to expect in handling since the Frey frame has slightly higher CG and longer chain-stays, but I am happy to say that it handles great. I only ride singletrack, typical trails in my area are tight with lots of undulating ups and downs and lots of roots and the bike handles it all better than before and no sacrifice in stability so I am super pleased.
The bad: the frame arrived from Frey with a couple of pretty severe defects. 1) The head tube is out of round with the results that I could not insert the fork steerer. I thought this was a show stopper with no work-around. but I wanted to assemble as much as possible to see if there were any other issues I had not considered. For this revealed that the stock chainring spider from the Blade would not clear the heads of the fasteners for the new Bafang chain guard. The Blade has non-boost spacing whereas Frey's AM1000 is boost so in theory I need the chainring to be (148-142)/2 = 3mm more offset. Frey refuses to supply the adapter as they say it is part of the motor assembly and they don't want to break the kit and also they cannot get an extra adapter from Bafang.

2) The second defect was the drive side rear dropout is out of alignment with the results that the rear axle will not thread into the derailleur hanger. The only way I could make this work is to loosed the hanger, thread and tighten the axle and then retighten the hanger screws. I attached a pic showing the hanger at an angle to the dropout with the axle installed (that is with no wheel - with the wheel on, the dropout is force into near alignment). Also attached two pics showing the head tube diameter measurements (1.54 min, 1.59 max)

Frey refused to admit these were defects - my contact has been Grace Wang - and Grace's response was "It is not a problem, you can chamfer the inner and outer sides of rear axle right and left holes.Then it can be used as normal."

How messed up is that? Finally Frey agreed to provide a replacement frame at a discount (so I would have to pay them more to fix the issue). I did have the option to return everything but not sure who would pay for shipping ($370). But since I had assembled the frame, it looked like returning the frame might not be an option.
Then Grace stopped answering my messages (using the Alibaba message portal) - I could see she was reading my messages and it has been 5 days now that she has been ignoring my messages. I made sure to keep my messages professional and not be insulting, but I guess she just got tired of managing my order and it appears I have been tossed into the "not worth our time" category. Ironically, just after I paid for the original order, she replied thanking my for my trust.

So what is the status of the project now and how did I get it to work?

I put the head tube of the frame into my bench vice and cranked it down as hard as I could (probably around 100nm) until the fork steerer could be inserted. I assumed the steering action would be horrible and that the headset will suffer premature failure. To my surprise, the steering action seems smooth with no noticeable resistance of other anomalies.
Regarding the rear-dropout, it seems to have relaxed over time so that now I am able to thread the rear axle into the mech hanger without having to loosed the hanger first. I did have to purchase a hanger alignment tool and as expected the hanger was about 2.5 cm out of alignment.
So despite those issues, I was able to complete the assembly and test the bike. Give that I was able to work around the defects and given that Frey is offering zero support, I guess I am stuck with this frame.

During the discussion with Frey about getting a replacement frame, Grace made this comment "And this time ,we will take this frame to assemble the entire bike for QA testing. Then we will send it to you." and this confirms my suspicion that they did not perform any QA inspection of the frame they sent me. I ordered a size Large AM1000 v5.0 frame, and according to Frey's ads, the L and XL have an extra gusset where the top tube meets the seat tube, and mine did not have that, so I am not even sure they sent me a v5.0 - maybe it was a surplus v4.x?

To be fair, it seems like they support the sales of complete bikes much better than the treatment I got, and I saw a post by Frey that they will no longer offer to sell frame only, probably directly related to my experience. It's disappointing that I had to suffer for their mistakes and I think one lesson learned is that for something as expensive and complicated as an eMTB, it pays to do business with a local (or at least USA) company who is less likely to ignore me if there is a problem, or at least make sure they have a proven track record of providing good support, and also probably the language and cultural barriers may be a factor.

So in the end, the bike works and at least for now I can live with the work-arounds to the defects. The question now is, will the frame last? I was going to sell my hardtail frame but may hold on to it just in case the Frey frame cracks or develops new problems.

Caveat emptor!
Attachments
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RearDropOutGap.jpg
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NoFanBoiz   10 W

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by NoFanBoiz » Aug 04 2019 8:02pm

cscscs wrote:
Aug 04 2019 7:04pm

The bad: the frame arrived from Frey with a couple of pretty severe defects.

1) The head tube is out of round with the results that I could not insert the fork steerer.

2) The second defect was the drive side rear dropout is out of alignment with the results that the rear axle will not thread into the derailleur hanger.

Frey refused to admit these were defects - my contact has been Grace Wang - and Grace's response was "It is not a problem, you can chamfer the inner and outer sides of rear axle right and left holes.Then it can be used as normal."

Wow, that's typical from that country and I had though Frey were an exception until I read of your experience with them.

Makes you wonder if they also force all components in to make them "fit".

I was about to order, but will look elsewhere now. Thanks for sharing and sorry they stuffed you around.

rayebiker   10 mW

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Re: My Bafang Ultra Mountain Bike! Frey AM1000

Post by rayebiker » Aug 04 2019 10:38pm

mwesleyroper wrote:
Jul 04 2019 7:42pm
Map Paddy wrote:
Apr 11 2019 9:44pm
Does anyone know a suitable replacement for the crank arms I got pedal strike now I got a bad case of wobbly crank going on .I k ot its ISIS spline but if anyone has fitted one that works well or a link to somthing that works please local shop no help at all
I recall someone on reddit saying they were very satisfied by changing the Bafang arms on their Biktrix to Miranda 152mm length, 8mm offset crank arms.
I posted about Miranda 150 or 152 cranks. Work great. Search the blog for details...

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