Endless Sphere

The internal gearbox is 6:1 (I have only gearbox). Without gearbox and 72/11= 6.5 (he has only chain). The 4kw motor will net you about 35mph and loads of torque with 8-9x total reduction, for offroad 30mph and 10x reduction is well enough. So after the 6 or 6.5 you only need a 30/32t front chainrin...

You could do what this guy did and forget the whole gearbox. I have a similar setup with the coaxial, single stage is fine on the 4kw.

viewtopic.php?f=28&t=69867&p=1490202#p1490193

Very good, I guess the cooling gets better too that way. I will go as far as saying this is the way the cyclones should have been sold from the start. You don't need 2 stages for this motor at all.

Well, to be honest with you, I planned to do that and what I actually wanted to have is a "secret" switch to flip just in case I am being pulled over and they test the bike on a dynamometer but I wasn't sure if I am allowed to ask that... Envoyé de mon ONEPLUS A5010 en utilisant Tapatalk And anothe...

3 speed switch, sab should have them. You might be able to program it to a very low power output, just enough to reach 25kmh.

Why are you buying the crapest bike fork in the world then putting an enourmous effort to make it half usable, just get a used/clearance good one for same price or cheaper.

Yes, and he made some measurements, cannondale were the most off on average, total crap brand.

Terrible idea to mix and match cells in the same pack, even if the actual stats (not the advertised ones) match, they will still age differently. If you can't afford it to go out in a blaze, just don't do it. Make another pack with the same voltage (doesn't have to be the same capacity), and paralle...

Bigwheel wrote: ↑

Aug 15 2019 1:00pm

Any word on how much the CYC X-1 weighs?

Similar to a bbs02 (including outer reduction), both including cranks/display/throttle.

The original cyclone controller (yuyangking) has a joke for pas. It is either off or full throttle(!). So you don't want it anyway.

SteelWolf wrote: ↑

Aug 10 2019 3:05pm

That is great news! Did they tell you that? Is there any info posted anywhere online? Thanks so much!

https://www.facebook.com/groups/4075764 ... 9002141025

They will be coming out with bb92 in a month or so. Or use adapter. But for you it is better to wait. I have bb107 and that will only be out in 2-3 months so I will be using that adapter in the meantime.

Yes, its Nucular controller with display. Installed few day ago. Very nice peace of russian tech. :) On my bike going with 18s lipo, 73,7V full charge, 150A battery and 250A phase setting. And less than 30kg weight. With bike chain and derailleur. Chain on this is OK for cca 2000-3000km. So I can c...

One rule for me, another for thee.


These bikes look like bafang ultras or clones. They might be limited to 50mph, but will only get close to it on a big downhill.

Brazilian talking to the automatic translator, strange things may appear. You may need to look not for the maximum power of the motor, but for voltage, and especially the maximum current. Since power is the relationship between voltage and current. First it is interesting to find the maximum voltag...

Never knew those existed but my new build is definitely going to use one of those. Do you have any experience using one of those motors built into the swingarm? Yes, I have the 4(4.8)kw coaxial, it spins 750 at 72v, about 90kmh(55mph) with a 1:1 ratio to the rear which is a bit tall. You need to pa...

That looks like the 4kw motor, not a 3kw one, the specs on it say so. The 4kw motor can take at least 6kw peak with 72v, but cyclones in general are not great shedding built up heat. Not sure about the thread but you could try some bolt sizes into the bottom holes, then order the long versions. Afai...

2.8 under load (56v), 3.0 resting (60v).

DH is a totally different ballgame. Building an EMTB just as a "self shuttling" DH bike is very tempting I must admit and could be much lighter than one you'd expect to blast uphill at 30mph+. However I prefer to have the power even though I'm now on a +65# bike. You can have both, exactly what I'm...

Who cares about times. If I can have more fun on trails going 20mph than 30mph, I will be going 20mph all day.

My friend, the noise comes from the square wave controller and the chain drive.
If you use chain drive from your hub, it will be louder and heavier than a belt drive sur ron.

https://www.ebikeparts.at/catalogue/24- ... -turbo_140

They have stock or backorder every T count motor. You have to write them.

CYC wrote me field weakening might come as a software update to the 72v controller, no idea if there is any intent or truth to it...

flat tire wrote: ↑

Jul 28 2019 3:35am

To upgrade you throw those things in the trash.

Hahaha.

If you want to upgrade, ask on here BEFORE you buy something.

I am considering adding "Spark Nano 7, 4G Micro GPS Tracker" to my e-bike. There will be a recurring cost for the SIM card. Cheapest I found works out to $4.00 a month for text and data on 4G network. It is small, but what is the battery life? It is strange it is not there in the listing. If it is ...