SZZS specific CEF50-main thread (initial builds and troubleshooting related only)
- Thread starter TCFlowClyde
- Start date
Stephen B
Member
Bummer
Did you already have another failure?
Did you already have another failure?
I don't think this is a warranty case. You have increased the stroke of the rear suspension. But if you change the part under warranty, then I will love this company even more. I bought a CEF49 frame and an M560 motor. I really like talking to Jean. She always responds to messages on time. Other companies communicate very poorly and may not respond for several weeks.So the good news is...I made it home with the DS chainstay cracked (just partially)...so lucky it didn't break in half on trail jumps. I lost the inboard bolt and washer too and must have come off before I was loading up my bike on my hitch rack. So yeah!But now I get to wait and warranty it. Probably a month. I might just patch it with my carbon kit so I can ride until the new chain stay arrives. I wonder if I overtorqued the inbound side bolt.
View attachment 124508
TCFlowClyde
Active member
- Thread starter
- #2,464
Don't tell anyone I overstroked it.
Plus, it's experimental. I still believe the 55 stroke is fine...at least with the MegNeg. Besides I don't think it mattered as much as the swingarm bolts for my weight.
I think I am going full custom Ti bolts for the whole triangle/swingarm. I'm a heavy rider and will probably benefit the most with heavy-duty upgrades at the pivots.
Don't tell anyone I overstroked it.
I think I am going full custom Ti bolts for the whole triangle/swingarm. I'm a heavy rider and will probably benefit the most with heavy-duty upgrades at the pivots.
Look on the bright side. Now you can justify an upgrade to UDH chainstay
TCFlowClyde
Active member
- Thread starter
- #2,466
True...except its the DS chainstay. The UDH goes on the seat stay...but future upgrade! Possibly....I want the Kindernay VII internally geared hub when they have electronic shifting(I think it needs UDH for install).Look on the bright side. Now you can justify an upgrade to UDH chainstay
temon10
Well-known member
what headset u put?
thaeber
Well-known member
Can You judge if the chatter is caused by something rattling inside the motor, or if it is caused by chain backslash rattling on the sprague bearing - same as M510?
Myalteregohamish
Active member
Did you recall what you were doing when it happened. Was there a big pop when it happened?So the good news is...I made it home with the DS chainstay cracked (just partially)...so lucky it didn't break in half on trail jumps. I lost the inboard bolt and washer too and must have come off before I was loading up my bike on my hitch rack. So yeah!
View attachment 124508
TCFlowClyde
Active member
- Thread starter
- #2,472
No. I didn't feel or hear until I got back to the trailhead and loaded up on my rack. Then I jiggled the rear triangle on the rack and heard squeaking and then noticed the crack (I think it's only a hairline fracture and will pull it apart soon to get a good look at the damage
) and the missing inboard mating bolt and washer. Honestly, I think I overtightened them ( left my torque wrench at home), because they were loose a few rides prior. I should've re-tightened it when I got back from my recent camping trip. Laziness on my part.
I'm now using a new orange gel thread locker 3x more lock-down power than blue, but still half of red apparently.
Also, kinda what I get for being sloppy on tailwhips when landing baby jumps.
i just don't trust the OEM mating bolts now, it's non-standard and think that might be my specific main issue, along with heavy rider load. So, going custom Ti the whole lot of 'em on the rear triangle. It should be more durable in the long run for my needs.
TCFlowClyde
Active member
- Thread starter
- #2,473
Well done and comprehensive!
I think I'm going for the Nukeproof headset top cap now that I've seen it in use...I got some water ingress last camping trip while driving my truck in the rain at 75 mph (was in my open truck bed standing and racheted down like a moto
). I forgot to put a piece of vinyl tape on it to cover it for the transport, so it got a long water blast unfortunately.🫣Chain chatter causes the clutch to bite repeatedly
Myalteregohamish
Active member
By clutch do you mean on the derailleur or something in the motor?
thaeber
Well-known member
The sprague bearing / one way clutch in the motor that engages when You start to pedal. Same functionality as the freewheel on Your cassette hub.
Edit: Looks like i misspelled it. Its sprag clutch. Sprag clutch - Wikipedia
Is it the weird metallic noise?
thaeber
Well-known member
Sorry I have no clue - I don’t have a M820 yet, and my M510 does not make such a noise when starting/stopping..
I don’t recognize py noise in your videos.
On my side, it’s each time the assistance starts and stops, there’s like a metallic noise, I guess this is the clutch engaging or something like this, but it’s a bit weird, I’ll try to record it
nice color you have there, what shock size are you using in order to get 157.5 travel. i am getting mine soon but unsure about the shock.
the shock is 210x52.5mm. The leverage ratio is 3x so 3x52.5= 157.5mm of travel
Cool. Have you try 200x55 on it. I just order my ohlin ttx m2 shock.
thaeber
Well-known member
Be careful. 200 x 55 does not work. 210 x 55 may work, see @TCFlowClyde posts. There are some reports here that coil shocks doesn’t fit due to interference with the seattube.
kimochi
Member
hey, what purple cranks are you using?Just got back from a week' s long riding trip. The trail-system (Phil's World, Cortez, CO, USA) has some fairly flowy tech with scary, rock slab drops on some lines that I survived...barely!
Before I left, I painted the rocker arm/linkage area with a thick coat of black paint pen. No marring, pitting, or chaffing after a week of hard riding.
Seems like the 55 mm stroke works with my 210x55 RS MegNeg.
View attachment 121944
I just painted my warranty front triangle before my trip. I'm now ready to disassemble my rear linkage and paint it. I'll inspect it further for any cracks, weakness etc. and report on it if something is questionable.
View attachment 121945
TCFlowClyde
Active member
- Thread starter
- #2,486
Hope cranks 155 standard offset, ISIS compatible.
kimochi
Member
nice. thank you. I'm also working on my build and I like the cranks you used.
Yap at the moment coil shock may not work but linda told me they are redesign it to make it work on coil. Sorry typing error, i am getting 210x55 not 200.
TCFlowClyde
Active member
- Thread starter
- #2,489
I'm satisfied that the 210 x 55 works...at least for me.
No paint flaking in the past 5+ weeks since the touch up paint with the correct custom Ti pivot bolt and the main pivot bolt issue The OEM bolt was 10 mm too short and the mating screw (2 of them) kept sheering off causing paint flaking at swingarm joints it appears) as I was able to ride it back lamed to my truck.
I interpret that as no friction points with my Megneg 210x55 mm!
Last edited:
Similar threads
EMTB Forums
Latest articles
-
Bosch-powered Merida is here – the eOne-Sixty SL and eOne-Eighty intro and test
Merida has used Bosch-motors for years, but not on the emtbs. The full...- Knut Nes
- 10 min read
- Views: 3K
- Reaction score: 5
- Comments: 9
-
Bosch ABS Pro and Trail Pro - an interview about the new ABS profiles
When testing the new Bosch Performance CX gen5, we were also introduced...- Knut Nes
- 2 min read
- Views: 5K
- Reaction score: 2
- Comments: 5