E-nduroRider
New Member
- May 2, 2026
- 3
- 1
Hey everyone,
I’d like to share my emtb build, specs and few issues I had with solutions. I wanted a long travel endure emtb that could handle chunky terrain and long descents and cheap
. I have built several analog bikes before and this is my first emtb.
Frame & motor
When I was inspecting the rear triangle linkage pivot bearings I noticed that the main pivot (lower pivot near the motor) does not have spacer between the two bearings, and when I tighten the bolt, the chainstay almost seizes and stops moving. I contacted the dealer and they were responsive and agreed to send me the part from Kunlun (later it did not work as it is wrong size). but I could not wait so I measured the space between the bearings to be 34.5mm, so I made a spacer out of a scrap tube that I cut to 34.5mm with ID of 13mm (it was close to 12mm of the bearing and it worked). this unfortunately might been catastrophic if I did not find out the spacer is missing, it might lead to frame failure due to riding or torqueing the bolt, at least it will cause pre-mature bearing failure.
Second issue was with rear tire, when I installed the 2.6 one it rubs with the seatstay. I tried a 2.4 and it worked. but I decided to file some of the seatstay frame material to make fit, I used a file and sand paper until it fits. However, I contacted the seller and they also agreed to send me a longer seatstay for 2.6 tire.
Ride impressions
I really like this bike it handles everything from tech descents and climbs well also it is very powerful. However, it is heavy 28KG ! . I used heavy parts as I had durability in-mind while building it
Koozer 550 12x148 DH/e-bike rear hub
I like this hub it is hefty and seems well built. However, I was disappointed because it slips on high torque . I might switch to RaceFace Vault J424 32H rear, It can handle 130 Nm on spec
Questions
I’d like to share my emtb build, specs and few issues I had with solutions. I wanted a long travel endure emtb that could handle chunky terrain and long descents and cheap
. I have built several analog bikes before and this is my first emtb.Frame & motor
- Frame: Markhor Rocket (size L)
- Motor: Bafang M560
- Battery: 48v 840Wh
- Fork: Fox 38 Rhythm, 180mm, 29”
- Shock: 2021 Fox DHX2 250 x 75 (sent for service)
- Wheels:
– Front: SUNringle Duroc SD37 Rim 29”, Koozer 550 15x110 DH/e-bike hub, Maxxis Minion DHF 2.6 EXO TR
– Rear: SUNringle Duroc SD37 Rim 29”, Koozer 550 12x148 DH/e-bike hub, Maxxis Minion DHR II 2.6 3CT EXO TR
- Cassette: Shimano LinkGlide CS-LG400-10 10S 11-48T
- Derailleur: Shimano DEORE RD-M5130-GS 10S
- Chainring: 36T steel chainring
- Crank arms: 155mm bafang crank arms
- Brakes: Frog Wake V4 with TRP RS05E 2.3mm 220mm front rotor / IIIPro 2.3mm 203mm rear rotor
- Dropper: KS 900i EXA FORM 170mm (with hope knockoff lever, hope knockoff seatpost clamp)
- Handlebar: Wake 780mm 50mm riser (I bent one in a crash before but I got this one for cheap)
- Stem: 31.8 Title ST1 knockoff 31mm stem
- Headset: Cane Creek 40 ZS44/28.6 - ZS56/40
When I was inspecting the rear triangle linkage pivot bearings I noticed that the main pivot (lower pivot near the motor) does not have spacer between the two bearings, and when I tighten the bolt, the chainstay almost seizes and stops moving. I contacted the dealer and they were responsive and agreed to send me the part from Kunlun (later it did not work as it is wrong size). but I could not wait so I measured the space between the bearings to be 34.5mm, so I made a spacer out of a scrap tube that I cut to 34.5mm with ID of 13mm (it was close to 12mm of the bearing and it worked). this unfortunately might been catastrophic if I did not find out the spacer is missing, it might lead to frame failure due to riding or torqueing the bolt, at least it will cause pre-mature bearing failure.
Second issue was with rear tire, when I installed the 2.6 one it rubs with the seatstay. I tried a 2.4 and it worked. but I decided to file some of the seatstay frame material to make fit, I used a file and sand paper until it fits. However, I contacted the seller and they also agreed to send me a longer seatstay for 2.6 tire.
Ride impressions
I really like this bike it handles everything from tech descents and climbs well also it is very powerful. However, it is heavy 28KG ! . I used heavy parts as I had durability in-mind while building it
Koozer 550 12x148 DH/e-bike rear hub
I like this hub it is hefty and seems well built. However, I was disappointed because it slips on high torque . I might switch to RaceFace Vault J424 32H rear, It can handle 130 Nm on spec
Questions
- Anyone else having same issue with the main pivot spacer missing ?
- Is what i did to grind the seat stays frame link wrong? (to make 2.6 tire fit)
- Any rear Hub suggestions that can handle 120 - 150 Nm?
- Any tips for lowering the weight down? maybe to 25-24KG?
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