i am building a rear wheel with a 9c "3kw" rear hub motor. i tried to buy the exact rim twice, but it wasnt the exact rim, twice now, sun ringle mtx39 36 spoke, fine so i have extra rims now lol.
i ordered custom custom spokes at about $100 for the spokes, they are 12g usa made spokes, they are 150mm. they are not the correct length.
i pulled this motor out of a 3kw rear hub so i could upgrade it to a qs205 v3 4t and the qs was a drop in on that wheel, the spokes were perfectly sized and it was super easy to build that wheel.
now i have an extra motor, and tried to buy the same rim and spokes and just built another wheel, but the wheels are different. this rim is hard to get and i am stuck with it, and can use the extra spokes in the future i guess.
so tonight i decided its time i learn how to actually measure the motor and the wheel so i get the right spokes. i created a custom wheel and rim in their calculator, using a single cross pattern their calculator says i need 157.7mm for one side and 156.6. the spokes i have are 155mm spokes and they just wont work. i get to about the 6th spoke, on just one side mind you, and it just isnt long enough to reach the nipple, it wont even touch it. i played around with loosening and tightening the 5 spokes to try to get the spoke closer to the nipple but it wont reach.
so my question is this, am i doing something wrong like usual or do i really need to get 157.7mm spokes? i thought for sure i had a little wiggle room with these numbers, but it appears not. seems like if my spokes were too short i could at least be able to get a couple threads on each nipple, but nope. this situation makes me feel kinda dumb
any advice would be appreciated.
btw, if you didnt already extrapolate it, the qs205 v3 4t has the same dimension as my old motor i am now trying to build, its the dang variations on the mtx wheel that is throwing all my work into the gutter, i would have thought they would all be the same, they have the same model number but nope they are different.
i am super tempted to buy the tool and just make my own spokes in the future, if that matters
i ordered custom custom spokes at about $100 for the spokes, they are 12g usa made spokes, they are 150mm. they are not the correct length.
i pulled this motor out of a 3kw rear hub so i could upgrade it to a qs205 v3 4t and the qs was a drop in on that wheel, the spokes were perfectly sized and it was super easy to build that wheel.
now i have an extra motor, and tried to buy the same rim and spokes and just built another wheel, but the wheels are different. this rim is hard to get and i am stuck with it, and can use the extra spokes in the future i guess.
so tonight i decided its time i learn how to actually measure the motor and the wheel so i get the right spokes. i created a custom wheel and rim in their calculator, using a single cross pattern their calculator says i need 157.7mm for one side and 156.6. the spokes i have are 155mm spokes and they just wont work. i get to about the 6th spoke, on just one side mind you, and it just isnt long enough to reach the nipple, it wont even touch it. i played around with loosening and tightening the 5 spokes to try to get the spoke closer to the nipple but it wont reach.
so my question is this, am i doing something wrong like usual or do i really need to get 157.7mm spokes? i thought for sure i had a little wiggle room with these numbers, but it appears not. seems like if my spokes were too short i could at least be able to get a couple threads on each nipple, but nope. this situation makes me feel kinda dumb
any advice would be appreciated.
btw, if you didnt already extrapolate it, the qs205 v3 4t has the same dimension as my old motor i am now trying to build, its the dang variations on the mtx wheel that is throwing all my work into the gutter, i would have thought they would all be the same, they have the same model number but nope they are different.
i am super tempted to buy the tool and just make my own spokes in the future, if that matters