New CEF69 bafang m510 and bafang m560 and cef50 bafang m820 frames

[sk0t]

Looks Great, Did you use Carbon Specific Grease?

Typo above^
I still need to do it. And yeah I’ll use the right stuff.

 

[nvcheeko]

Typo above^
I still need to do it. And yeah I’ll use the right stuff.

Maybe that stop the squeaking

 

[Nitro]

Maybe that stop the squ

Yes

@Charley. I see that the CEF69 can run a 27.5 rear wheel. What specific items are you recommending to change so as to not mess up the geometry (shock length?) I do not see a flip chip on the frame. I would like to run this in mullet setup as close a 160/160 as possible. TIA.

 

[WK0]

Shakedown ride went well. Suspension feels good. Needed to go back through applying grease, carbon paste, then retorque everything. The carbon creaking was loud. Sure you can definitely hear the m560 but it didn’t bother me or my friends I was riding with. Overall very happy with it. 53% battery left after 2k ft elevation and 14 miles of riding in mostly sport+.View attachment 170538View attachment 170539View attachment 170540
160mm 36 performance, 205x60 float x factory, hunt wheels, slx brakes and shifter, pnw dropper.

Looks amazing. I just ordered mine and plan to put on a 170mm zeb fork I have from another bike. Would you be able to measure the head angle with your 160mm? I'm seeing 64.5 degrees in the chart but it looks slacker based on measuring from the photos I can find

 

[Charly]

@Charley. I see that the CEF69 can run a 27.5 rear wheel. What specific items are you recommending to change so as to not mess up the geometry (shock length?) I do not see a flip chip on the frame. I would like to run this in mullet setup as close a 160/160 as possible. TIA.

weight and measure

 

[Nitro]

weight and measure

I do not understand. If you put a 27.5 rear wheel on this frame it will slacken the HT angle, steepen the seat tube and most importantly lower the bottom bracket. Normally a bike that can take a 27.5 rear wheel would have a flip chip or something you need to change in order to keep the same geometry from the 29" wheel. I do not understand "weight and measure" you would need to physically change some component to not have the geometry change from one wheel to another. I do appreciate the help.

 

[nvcheeko]

@Charley. I see that the CEF69 can run a 27.5 rear wheel. What specific items are you recommending to change so as to not mess up the geometry (shock length?) I do not see a flip chip on the frame. I would like to run this in mullet setup as close a 160/160 as possible. TIA.

Hit mate im going to be running same mullet with Fox 38 170mm x2 with 160mm fox float x2 on rear with. Think thats perfect size for me.

 

[Nitro]

Hit mate im going to be running same mullet with Fox 38 170mm x2 with 160mm fox float x2 on rear with. Think thats perfect size for me.

Very cool. There is no information about the geo settings online if you go mullet except that the frame "can take a 27.5". I'm worried about how jacked the geometry will be. Basically we are running the same ratio. 160/150 is the same as 170/160. The 27.5 will lower the BB by 12-14 or so mm. That is a ton. The ST and HT angles will also get messed with so at what point does the 27.5 benefits get scrubbed because you slowed down the handling of the bike by raking it out even more.

 

[Freda]

Shakedown ride went well. Suspension feels good. Needed to go back through applying grease, carbon paste, then retorque everything. The carbon creaking was loud. Sure you can definitely hear the m560 but it didn’t bother me or my friends I was riding with. Overall very happy with it. 53% battery left after 2k ft elevation and 14 miles of riding in mostly sport+.View attachment 170538View attachment 170539View attachment 170540
160mm 36 performance, 205x60 float x factory, hunt wheels, slx brakes and shifter, pnw dropper.

Looks great! You should check that rear brake alignment though, your adapter is not correct size.

 

[nvcheeko]

Hi Wonderfull people

My Bike arrived today but wont be posting pics till it builds but i did take photo of motor if anyone interesed as its version 4.0

 

[sk0t]

Looks great! You should check that rear brake alignment though, your adapter is not correct size.

View attachment 170622

Yeah I know I didn’t have long enough m6 bolts so I put this together where only half the pad was touching. The correct 180-203 adapter is installed now.

 

[sk0t]

Looks amazing. I just ordered mine and plan to put on a 170mm zeb fork I have from another bike. Would you be able to measure the head angle with your 160mm? I'm seeing 64.5 degrees in the chart but it looks slacker based on measuring from the photos I can find

Looks amazing. I just ordered mine and plan to put on a 170mm zeb fork I have from another bike. Would you be able to measure the head angle with your 160mm? I'm seeing 64.5 degrees in the chart but it looks slacker based on measuring from the photos I can find

I am running a 2mm offset bushing on the shock to lower and slacken it just a bit. I used a phone app and measured the HTA at 64 degrees

 

[NickQ]

I have ordered my CEF69 frame today! I'm looking forward to its arrival

 

[Ndanger]

From new orders to Szzsbike, they will come in version 4.0

Hello Charly, I have a question. Is it possible for you to PM me. Thanks

 

[Green Leopard Print]

I find this frame very interesting too. I tried to analyze it in the Linkage X3 software and even with 65mm stroke I don’t get more than 165mm travel. It would be nice to see some charts from the manufacturer.

Late response, but I when I overlaid the geometry and pivot points in CAD (trying to eyeball the pixels as best I could), I also got 165 mm travel in vertical wheel travel with a 65 mm stroke. There doesn't seem to be much progression on this frame, (around 15%, if I calced it right?).

Very cool. There is no information about the geo settings online if you go mullet except that the frame "can take a 27.5". I'm worried about how jacked the geometry will be. Basically we are running the same ratio. 160/150 is the same as 170/160. The 27.5 will lower the BB by 12-14 or so mm. That is a ton. The ST and HT angles will also get messed with so at what point does the 27.5 benefits get scrubbed because you slowed down the handling of the bike by raking it out even more.

I was also wondering about this because I thinking of doing something similar and mulleting and there is no kinematic information. I think you need to jack the eye to eye up to about 6 mm to get a mullet back to stock geo, but that's not possible with a trunnion unless you can machine a custom yoke.

You could maybe fit in a 210x55 shock with a trunnion adapter, but I calced the wheel travel to be about ~147 mm at most. However, I would think increasing the eye to eye of the bottom of the 205 shock with a 2mm offset bushing, and the static geo wouldn't be affected as much. Roughly, (-6mm reach , +5 mm stack, -8mm bb height, -0.6 deg HT/ST Angle). If you can make something like what GuitsBoy in the "new cef55 frame" thread did with a custom 3mm offset bushing, even better. Roughly, (-5mm reach , +3 mm stack, -6mm bb height, -0.45 deg HT/ST Angle).

A 160 fork would probably be even less slack.

 

[sk0t]

Late response, but I when I overlaid the geometry and pivot points in CAD (trying to eyeball the pixels as best I could), I also got 165 mm travel in vertical wheel travel with a 65 mm stroke. There doesn't seem to be much progression on this frame, (around 15%, if I calced it right?).


I was also wondering about this because I thinking of doing something similar and mulleting and there is no kinematic information. I think you need to jack the eye to eye up to about 6 mm to get a mullet back to stock geo, but that's not possible with a trunnion unless you can machine a custom yoke.

You could maybe fit in a 210x55 shock with a trunnion adapter, but I calced the wheel travel to be about ~147 mm at most. However, I would think increasing the eye to eye of the bottom of the 205 shock with a 2mm offset bushing, and the static geo wouldn't be affected as much. Roughly, (-6mm reach , +5 mm stack, -8mm bb height, -0.6 deg HT/ST Angle). If you can make something like what GuitsBoy in the "new cef55 frame" thread did with a custom 3mm offset bushing, even better. Roughly, (-5mm reach , +3 mm stack, -6mm bb height, -0.45 deg HT/ST Angle).

A 160 fork would probably be even less slack.

If you going off my photos with the fall leaves, I want to reiterate that I am using a 160 fork and a 2mm offset bushing in the shorter eye to eye direction. I’d be careful about extending the eye to eye which could cause the yoke to contact the seat tube.

 

[Green Leopard Print]

If you going off my photos with the fall leaves, I want it reiterated that I am using a 160 fork and a 2mm offset bushing in the shorter eye to eye direction. I’d be careful about extending the eye to eye which could cause the yoke to contact the seat tube.

True doesn't seem to be a whole lot of space, would have to remove material from the yoke. Seems like best case to run a mullet is just to take the geo hit, which doesn't seem to be that bad.

 

[nvcheeko]

Chat GPT This on 170mm Fork 205 x 65mm Shock (also said dont recommend using bushing of 2mm wouldnt be worth damaging shock, So i guess ill ride it see how bad it is (this isnt taking into account the sag you set i guess too)

 

[Radolf]

Does anyone know what rev. 4.0 is for the M510 engine? Rev. 3.0 hasn't gotten old yet... I want to order a CEF69 with the M510, and if the changes are significant, I'll insist on the latest version.

 

[Chili Shen]

I have already verified with Bafang. The difference between M510 3.0 and 4.0 is that 4.0 can be matched with non-Bafang displays; everything else is the same.

 

[RAW76]

Does anyone know what aftermarket crankarm is out there for the CEF69?

 

[Chili Shen]

请问有人知道市面上有哪些适用于 CEF69 的改装曲柄臂吗？

 

[Chili Shen]

152毫米/160毫米/165毫米/170毫米曲柄

 

[borysgo2]

I think that 160毫米 crank will be the most popular

 

[WK0]

I received my frame size L

View attachment 167651 View attachment 167652 View attachment 167653 View attachment 167661 View attachment 167662

Hi, I had a few questions when you have a chance:
- how do you like the frame now that you've had it for a while?
- can you confirm the seat post diameter? Manuf says 31.6 but I'm seeing a 34.9 seat post clamp in your photo
- can you confirm the headset diameter? Manuf says 52mm top and bottom but that's not really a standard size, do they mean 56mm?

 

[nvcheeko]

That red one looks sweet and i'm glad that one is mine, Building it up now

 

[sk0t]

Hi, I had a few questions when you have a chance:
- how do you like the frame now that you've had it for a while?
- can you confirm the seat post diameter? Manuf says 31.6 but I'm seeing a 34.9 seat post clamp in your photo
- can you confirm the headset diameter? Manuf says 52mm top and bottom but that's not really a standard size, do they mean 56mm?

- loving the frame. I’m just under 5’ 10” and the medium feels great. Suspension with the float x is really good too.
- 31.6 is the seat tube ID or post size. 34.9 is the seat tube OD or clamp size.
- the listed headset size is accurate. It is indeed unusual and uncommon but I think that’s because of the optional headset routing.

 

[WK0]

- loving the frame. I’m just under 5’ 10” and the medium feels great. Suspension with the float x is really good too.
- 31.6 is the seat tube ID or post size. 34.9 is the seat tube OD or clamp size.
- the listed headset size is accurate. It is indeed unusual and uncommon but I think that’s because of the optional headset routing.

Got it, thanks dude! I'm stoked. Hopefully I can find an angle adjust headset that will work with 52mm since I plan to slacken it out a bit. Gonna be a long wait

 

[WK0]

- loving the frame. I’m just under 5’ 10” and the medium feels great. Suspension with the float x is really good too.
- 31.6 is the seat tube ID or post size. 34.9 is the seat tube OD or clamp size.
- the listed headset size is accurate. It is indeed unusual and uncommon but I think that’s because of the optional headset routing.

Does the frame suspension feel very linear like some other people were saying? I'm planning to throw a coil shock on it

 

[sk0t]

Does the frame suspension feel very linear like some other people were saying? I'm planning to throw a coil shock on it

That’s really hard to say in my opinion and just based on a couple rides. That being said, I don’t think it blows through the travel at all and has a nice ramp up at the end. I’ve hit some big drops and don’t bottom out hard or anything.