What exactly do you want to know about the frame? Please be specific and if you are asking for something quite difficult to measure, please provide a link or something, so I can see the procedure on how to make the measurement.
I'd just like to say something about the frame we offer. Firstly, I wouldn't sell it if I thought it was second rate and we've sold quite a few (maybe 40 plus) and there have been no serious problems reported, almost nothing really, they go out and we don't hear much (no news is good news, they say). I am a little surprised that it isn't selling better as I do believe it is a nice product and for the cost (and assuming the style of bike works for you), it seems a bit of a no-brainer (IMPO) for a fairly high power, big battery hub motor ebike, compared to buying a new (mid-range or above) regular bike, to convert into an ebike. There is huge space for a battery, if you really wanted to. 2KWhr is absolutely nothing in this frame, I reckon we could squeeze 4 or even 5KWhr in there, if we tried.
I don't claim to be a suspension expert and I don't ride up or down mountains, but i do know the bike rides very well (on the road, or over rough ground) and is very plush with the DNM rear shock (standard 650lb spring is a bit soft if you're a bit heavy, the 750lb stiffens it up nicely). It feels very stable at speed (had mine up to, close to 50mph) and the dropouts still look like new (despite running 6KW and at 1 stage closer to 10KW into a Big DD Motor). The bike feels absolutely solid. To be calling this out as if it will fall apart when it hits the first pot-hole, when people are going round on 200USD frames with big batteries strapped to them and several KW of large DD motor on the back of a spindly hard back alloy frame.
I'm sorry, but I think people should get a little perspective. The frame is a substantial lump of steel and the full suspension reduces the impacts/shock experienced by the frame when it hits hard. The weight figures are very comparable to other, similar frames out there, it isn't a weight weenie, but it's no heavier than other frames and frankly, by the time you've added everything to the bike, and put a few KW through the back wheel, I don't think many would notice a couple or 3kg of extra weight. The bike is more of a MTX bike with pedals, than an Ebike you'd use as a pedal assist. IMPO, the seat position that feels stable for a high power bike like this (low as possible), is not great for pedaling and if you set the seat higher, to suit pedaling, it doesn't feel stable.
The style of suspension used on the frame, looks remarkably similar to pretty much everything out there (of a similar ilk). So, yes it isn't a top of the range design, but it doesn't cost several K USD either (before you add the electrical bits). I've no doubt, that with the right skills and the time to do it, you could convert a second hand full suspension frame and buy good, used suspension parts that would be lighter and better, but is that really a fair comparison? We could fit out 1 of these frames with a very powerful setup, bigger, more powerful and lighter battery (custom and with fusible links on every cell in the pack) than what you could find on a complete bike. Hell you could spring for an Adappto Controller and still come in WAY under what you'd need to pay for a finished bike with not as good electrical parts used. If I'm not mistaken the same DNM parts we offer are used in much more expensive, finished bikes.
It is unfortunate that the factory wants to plaster them all over Alibaba, and I did advise my friends that were involved in the design and realization of the frame, that it was a very bad idea and that it seriously affected the image, but it is what it is. The factory are hungry for the scraps, rather than taking the time to develop dealers in a slower and smarter way. A big name US ebike brand are manufactured in a factory in Ningbo China, and Iphones are made in China too. Just saying.
I do not believe the frames (single piece samples) can be purchased cheaper from the factory (that was the agreement between us), rather than from EM3ev and for info, we supply the factory with a few of our controllers (18 fet 4110), throttles and V2 CAs which they sell onto their customers (which is why they show a V2 CA in some pics). We also build our own batteries and can do a custom battery, for these (we do not provide any batteries to the factory, I think they get some LiFePO4 packs from somewhere).
If you'd rather buy from the frame factory rather than us, and discuss the finer details of motors, batteries etc. with them, go for it. The factory may be quite happy to field lots of questions on a complete bike, but I don't think they are particularly keen on selling single frames, as they are a factory, not a retail outlet, plus their depth of engineering knowledge and English skills may not be up to the high standards, of some of the more picky ES aficionados.
We are also happy to supply dealers and can offer some discount for quantity purchases. The reality, is that by the time, the finished bike with a decent and high power battery, kit, and all the components, the frame is a pretty small proportion of the total cost. If you think in 2 years time, that you want to use a different frame, then you should be able to transfer most of the parts over to it (but you'd have to be careful with the battery, as most other frames out there, have nowhere near as big a battery compartment, as this frame). I'm happy to hear constructive thoughts or recommendations, so fire them over
Cheers
Paul, AKA Cell_Man
)...and some of that will be the law.