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  1. C

    Cyclone now have a 20kw kit!?

    i have this frame and the rear swing arm is 2.7kg and the triangle dropouts are larger than some motorcycles. it also has bolt holes on the dropouts that support scooter torque arm plates that come with china hub motors. the motor is 8kw continous 20kw peak. frame is avaiiblle in both 150mm...
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    Steel Ebike Frame EASTGEM ~600$

    i personally think the weight of those carbon swing arms are a bit light for a heavy hub motor rear wheel and maybe not strong enough with thin drop outs and it might break. THe swing carbon swing arm is 980 grams on the gross frame and the dropouts are very thin at the end . thats not much...
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    Who has bought EM3EV's bicycle frames and how do you like it

    I had a problem with the swing arm on my frame the pivot holes did not line up the swing arm straight with the frame bearing but when tightening up the swing arm pivot hole nut area it bened them into place. i'm still not sure if was machined like this deliberately and desinged to bend into...
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    Kuberg Free Rider

    Are standard motor cycle/dirt bike/ go karts sprockets bolt circle diametre compatible with this bikes rear wheel hub and motor shaft front sprocket when they require replacing when teeth become worn? If not i would be concerned that spare sprockets might not be availible to buy in 5-10 years
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    new cyclone 3000 w mid-drive kit?

    regarldess how tight the bottom bracket mount is the motor force is so strong it slips and gets pulled upwards into the frame downwtube underneath. what it really needs is a heavy duty frame with welded motor attachment points into the design of the frame. on a frame with decent quality...
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    new cyclone 3000 w mid-drive kit?

    Problem i have found with the cyclone motor is the bottom bracket shell mount just doesn't work well or grip the motor mount plate tightly enough and it slips as the force of the motor is so powerful and under load it pulls the motor upwards into the frame downtube. it left a dent mark on my...
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    ENDUROEBIKE.COM

    what is the maximum safe continuous and peak current you would reccomend on this frames dropouts and swing arms in regards to the gyroscopic motor forces imposed on the drop outs and the flexing on the swing arm pivot and shock absorber flex. leilie ebike says 5kw continuous 8kw peak. do...
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    ENDUROEBIKE.COM

    ITs a good idea for safety to increase the thottle acceleration rate delay on the controlller software like kelly controllers have. that increases the dealy time and means you can wind the thorttle quickly without being jerked or the front wheel suddenly lifting up.
  9. C

    ENDUROEBIKE.COM

    I have this frame also. IT seems ok but the welding around the headtube does not seem very thick. ALso there is visible oxidation on the the steel inside the headtube. The welding seems a little thin in certain areas. The metal around the headtube is quite thin. A video on youtube shows...
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    Steel Ebike Frame EASTGEM ~600$

    I contacted eastgem and asked them if they could make a heavier carbon swing arm than 980grams for frame with more multiple layers of carbon 20k or 50k carbon to make it 3kg weight and they said they will calculate this so hopefully they will do this. this will make it the weight of a motorcycle...
  11. C

    Steel Ebike Frame EASTGEM ~600$

    seller said 16kg no problem and can support upto 300nm torque. A 1kg carbon swing arm is really the same weight as a full suspension downhill carbon mountain bike swingarm. I had hoped for something with heavier layers of carbon for a heavy hub motor ebike swingarm.
  12. C

    Steel Ebike Frame EASTGEM ~600$

    Im worried about putting a heavy hub motor on a 1kg carbon swing arm on the denzel frame? A 13-16kg hub motor on a 1kg swing arm doesn't seem a safe idea. my motor is 5kw continous a 8kw peak with motorcycle rim and is nearly 16kg. DO you think its safe?
  13. C

    First build and using an aluminium frame

    I would reccomend instead using a heavy duty strong ebike frame with strong thick dropouts. SOmething like the denzel ebike or leili ebike enduro frame or cyclone ebike frame. THose frames come with reasonably good strong torque arms. The denzel frame has padded motorcycle seat option...
  14. C

    Steel Ebike Frame EASTGEM ~600$

    THe new rear swing arm is carbon fibre and swing arm weight is 1kg so pretty light for a heavy hub motor to be mounted to.
  15. C

    Steel Ebike Frame EASTGEM ~600$

    I'll post some pics on here of the frame when it arrives and see if the painwork finish on the rear swing arm has been improved. It looks like it has been on the new dropout version photo. I asked East gem and they said the dropouts can handle Max torque 300 Nm. I'm hoping they make a centre...
  16. C

    Steel Ebike Frame EASTGEM ~600$

    http://www.eastgem.net/gross-frame.html https://www.facebook.com/denzelbike/photos/pcb.1486599891643997/1486597644977555/?type=3&theater I emailed supplier and they informed me they sent the wrong tracking number by mistake so disregard last comment
  17. C

    Steel Ebike Frame EASTGEM ~600$

    Yes. I emailed them and they said i would be sent the frame with the new dropouts design. the frame is being shipped from china to the uk via the united states which seems a bit unusual as the distance is longer. i checked the tracker and it say item has been delivered at front door in the...
  18. C

    Steel Ebike Frame EASTGEM ~600$

    [/img] new rear dropout design and looks way better and stronger than the original dropouts. .
  19. C

    Steel Ebike Frame EASTGEM ~600$

    What formula do you use to calculate the battery space volume of a ebike frame with the dimensions of the frame battery area? 18650 cells are 18mm diameter. ive ordered the gross xl frame. rather use prismatic nmc 3.7v cells than 18650 cells as they are availible in higher capacity so using...
  20. C

    Steel Ebike Frame EASTGEM ~600$

    I've ordered one of these frames so hoping it is reasonable. I noticed on the photos the finish on the rear swing arm doesn't look very smooth and it looks a bit rough and sombody else mentioned about the paintwork finish. the dropouts look quite thin. the website says the rear swing arm is made...
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    ENDUROEBIKE.COM

    I have this frame. I'm wondering what is the largest capacity battery you could fit in the battery case if using 3.7v nmc cells or perhaps not using the case to use the extra room I'm worried about using 18650 cells as if a cell failed spot welded cells are hard to fix on a battery with...
  22. C

    deleted

    I have this frame also. COUld you tell me the exact dimensions of the 72v battery you have in the battery case as i was considering sending the battery case or frame to a battery factory when i buy a battery for custom sizing. I opted for the motorcycle rim with 5kw torque motor 700rpm...
  23. C

    ENDUROEBIKE.COM

    i have the enduro frame and with the new model dnm usd8 tapered fork. the dnm usd8 tapered forks have twin brake caliper mount points also if dual front mtb kits brakes are ever released. on a heavy 50kg ebike that would be good. enduro frame has 56mm id headtube. leili ebike suply the...
  24. C

    Panasonic NCR18650B 2.7kWhr pack for my Stealth Bomber

    I saw a battery company on alibaba that sells cell joiners for 3.7v 18650 cells that does not require welding and just clamps them together on the ends meaning quick connect and disconnect unlike spot welding. it looked like a cell holder bracket with terminal joiners built in. company says...
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    Roadrash's Enduro ebike build

    http://www.enduroebike.com/sale-5909962-black-steel-electric-enduro-bike-battery-case-with-spray-painting.html I'm not keen on the idea of using 18650 cells on a large 72v 35ah battery. say a cell failed imagine the hassle of taking apart 100s of cells and also not owning a spot welder...
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