custom made bracket, see picture

The orginal XM Carbon Speed has matured and had a child.

There is a second XM Carbon Speed full suspension and it has gown up to be like its daddy with a Cyclone 3000w.
http://www.xmcarbonspeed.com/Productinfo.asp?f=1402 (FYI, Peter at XM Carbon Speed is a very good person do work with)

IMHO, a carbon full suspension bike with Cyclone 3000w very close to being the ultimate woods bike and here are some of the reasons.

1. Versatile mounting options: Relatively speaking it was easy to make longer/stronger brackets to facilitate inside the frame mounting for improved ground clearance
2. Good power to weight ratio: The BBS-HD feels like it is broken or has dead batteries when compared to the Cyclone 3000w
3. Reasonable noise levels: Few people have noticed or commented on the sound.... the mini cyclone was obnoxious and not useable on public areas
4. Low Cost: When compared to the cost of carbon components, Lipo batteries, BBS-HD the Cyclone 3000w is a bargain
5. Dependable: Maybe it because the mounts are well made, but nothing has broken during deliberate nasty thrashing rides in the woods... that not to say something won't break, but it was surprising that efforts to ride hard and break something... nothing broke

Bottomline, the Cyclone 3000 is awesome, but don't let anyone tell you that weight doesn't matter on ebikes... A full suspension carbon ebike in the woods using a battery backpack is another world when compared to the weight and mass of an aluminum BBS-HD ebike... Bafang is now boring...

I bulk charge them, but watch for heat or swelling...  individual cells are monitored periodically and bad ones are removed.

I have not notice that cell matching is critical as some profess and swelling or heat usually predicts that a cell internal resistance is too high

IMHO, not over discharging HobbyKing lipos is the key to safety. I found little benefit building packs with BMS units so I stopped using BMS.

Commercial packs have one BMS lead monitord 6 to 8 welded cells in series they call one cell. So the BMS can only tell when the larger group is failing, not each individual cell

With HobbyKing packs, generally 6 cells pack have 6 cells and each single cell can be monitor with a cell tester. 

I have some commercial packs, but but for my high performer ebikes I use HobbyKing Lipo's. The cost to performance ration has been excellent

Hobbyking batteries are cheap, light, powerful and work good... been using them for many years....
I don't recommend them for the inexperienced novice because they have very high current that can be dangerous
Bottomline, this ain't rocket science but basic electrical and workshop skills are required

58.8v/52v Hobbyking Lipo picture

It is a good idea to safety wire the rear axle nut on the rear 12mm axle... if it get loose it could destroy the cassette freehub

See attached picture of the 48# wheelie monster. 

Just finished making the custom brackets and installing a Cyclone 3000 inside the frame

The only testing was in the shop using 34t to 11/36 cassette and a backpack battery holding Hobbyking 1600M ampHr lipo's

eCarbon wheelies very easily at 48v and gets wild with 52v... feels like it could climb a tree

Can't imagine 72v... concerned the huge torque could break something

Bike is surprisingly light at 48# ... when compared to my other ebikes,..

IMHO, This Full Suspension eCarbon fattie with carbon wheels, 4.7' tubeless tires, 3000 watt cyclone motor and a high amperage Lipo backpack has all the right elements to be the ultimate woods bike...

As it now stands, nobody can keep up with the now "old and obsolete" PMM (Purple Mountain Majesty) so the eCarbon will be like a Star Wars in the woods... but it needs a name ...

Very impressed with XM, Peter and Bells

As noted in previous replies the frame is amazing, but the 80mm x 35mm Club Carbon 80 wheels are the best

Yes they are light and the excellent tolerance relating to rim dimensions made tubeless setup a breeze.

One layer of 75mm Orange Seal Fat Bike Tubeless Tape, 46mm American Classic Bicycle Tubeless Wheels Valve Stems and and 4 oz of sealant... done

NOTE: Only use one layer of thin Orange Seal Tape, Gorilla Tape would be too thick and the valve stems must be 46mm or longer

Bottomline,

For a large size frame FULL SUSPENSION FAT BIKE... this is a light fattie thanks to Peter and Bella

21" frame
4.7" Sno Tires
120mm Bluto forks
200mm Rear Shock (120mm RW travel)
SUSPENSION SEAT
Front and rear fenders
heavy duty aluminum handle bars
120mm high-rise stem
many headset spacers

only weighs 32#

... change the seat and bars it would be around 30#...  But with rider weight of 255# light handle bars are risky

Motor in transit, stay tuned

Wow, really fast shipping from Bella and Peter

Frame was packed very well and what you see in the picture only took one hour to assemble

very-very please with the frame, I can recommend it 100%

Using Aluminum Rims until the Carbon wheels ship, the Aluminium wheels will be used for muddy trails

The Carbon wheels will have a less knobby tires for summer dry tail riding, the carbon wheels are being built by team Peter

The knobby mud tires are not mounted on the aluminum wheels because the Orange 75mm Tubeless rim tape has not arrived

You are correct, XM has good service.

They shipped the frame and gave a tracking number the same day as receiving payment. 

I also ordered seat tube, headset and a spare derailleur hanger, to avoid fitment problems

I did not order XM wheels because of their long lead times, but little did I know wheels would not be the problem... see below

Now the bad news...

I cannot find any bike local shops that stocks a 37mm seat tube clamp so I needed to order from Ebay

Unfortunately that means the eCarbon project stops until late August when the clamp is scheduled to arrive from China

This is the same lesson as posted before on this forum.  It is the little stuff that can makes building a Carbon bike more difficult. 

I never guessed a $12.00 part would halt this expensive $$$ project. I assume that is why some carbon frame builders include the seat tube clamp 

Found a cool Stainless Steel clamp

Why carbon, attached are better pictures of an Aluminum Full Suspension Fattie. 

Consider those the BEFORE pictures

The Purple Mountain Majesty (BikeDirect Sniper) is an awesome bike and the attached pictures show the small LiPo batteries next to a dollar bill... carried in a hydration backpack.

These batteries when connected to the Bafang HD gives a 10 to 20 mile woods ride that is best described as silent Motor Cross or a very exciting mountain bike ride!

Ok, so where the the XM carbon come in?...

1. I liked riding the eSniper but they are no longer available and it's a fairly heavy bike
2. Because I carry the LiPo batteries in a backpack, means any real weight reduction of the fat bike improves it handling dynamics

Bottom Line, going from an alloy bike to a carbon bike that weighs nothing when compared to the Sniper

eCarbon...  It is going to be hard to take the smile off my face

Thanks, and now I am excited about building my eCarbon....I sent an email to Bella ask for a quote.
Another question.... should I consider xm carbon wheels for my Pennsylvania woods and trails or will aluminum be more durable?
Either way I will need a rear wheel because I don't have any 177x12 stuff
FYI, I will be using 120mm Bluto...

I am looking at carbon because I can't find another full suspension Fattie that meets my motor mounting configuration.  I like the sniper and after riding it, my hard tail Fatties feel like log trucks. 
I only trail ride and having a second full suspension Fattie is my only excuse... and I never owned a carbon bike before. 
Logic has not been part of the thought process

I am looking to upgrade my Aluminum full suspension eFat Bike to a carbon Full Suspension using the CS-001 newest full suspension fat bike frame 26er for 177*12mm axle.

My current E-ride is the 19" BikesDirect Sniper with a Bafang BBS-HD pulling 52v from HobbyKing LiPo's... SEE ATTACHED

The plan is to build a 21" Xiamen  CS-001 full suspension fat bike frame 26er for 177*12mm axle using a 3000 watt electric motor

http://xmcarbonspeed.com/Productinfo.asp?f=1402

If someone has experience with this new frame, it would be nice to hear comments