electric _ nz ,
Wait to install it as there are things to check before and things that need to be done just a certain way in order for the motor and cranks to align up properly.
I am going to make a new thread on improvements that need to be made on it , and what to check for before you install it .
Since you just got it and probably want to install it right away here are a few points to follow for you to make your life easier , I had to correct some things that took hours/ days to figure out.
1) Mine was sent with the outer chainring put on backwards, the chainrings are cheep not like Shimano where you can look at the teeth angle and see how to correctly install onto the crank.
Look at the video's and pictures on GNG website closely . the chainrings should be on the crank with the indent of the chainring/chainwheel facing outwards , there is dish to the chainring so if your's is installed not right like mine was , ( a mistake at the Factory that cost me days to figure out ) , The chain will be at an angle that will have the chain jump off the motor sprocket . Between that mistake by the factory and my not screwing in the BB not quite enough from the drive side to non drive side make the chain always jump off when testing / turning the cranks by hand.
2) Be careful with the Chainring Bolts as they are Aluminium and will strip the heads at the hex wrench , unless you are very careful.
Note there there are no standard chainring bolts for bicycles that are the right length. ( I spent a month trying to find Steel Chainring Bolts / Nuts that would work , no one makes 16 mm outter/female steel nuts , add to that there are different thread pitches for Chainring Bolts/Nuts ) not even Sick Bike Parts sells such chainring bolts .
GNG needs to make those Chainring Bolts/Nuts with steel and make the female/outer ones longer like 16 mm instead of 12 mm !
3) You have to put in the BB just right , if you do not thread it in from the drive side enough then the left/non drive side crank arm will not clear a bolt on the motor, if you thread it in too much then the drive side crank arm will rub / not clear a bolt that holds the chain tensioner .
4 ) Notice how the spring direction goes on the Chain Tensioner , wrong way and the chain will be too tight .
There are other improvements that need to be done but I will list them later when I have time in a New Thread .
electric_nz said:
I have received one of these to install, it arrived fast and all looks fantastic. The aluminium mounting brackets are works of art, main downside is they are so good they make the motor look a little cheap really. It's a little on the heavy side all up; but that's probably the motor, BB, steel sprockets etc. The 12 FET controller is very light but not exactly stylish. It has 4110z FETs in it.