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Castrol oil is da best |
I use that blue/green poly grease from park tools. It's really Good. |
Yup yup |
Also sometimes hammering or corrosion can lead to physical pits in the race that lead to repeative 'notches', like a headset bearing that has a noticable 'detent' for straight forward |
True day |
YES THATS what im asking. Do you remember an illustration of the locations of where these pits form on the headset bearings? |
Wait but then its not just the repeated motion of the bars moving just in the center but also impacts? Does this mean that theres pits on both sides of the bearing? |
https://www.sheldonbrown.com/brandt/indexed-steering.html |
*shrugs* |
Lol |
Typically the outer race and inner race in headset bearings both wear out, but don't necessarily form easily identifiable pits like on axle cones. |
Bicycle ball bearings tend not to dent easily, unlike carbon-steel ball bearings typically used in automotive. |
If one were to use carbon-steel ball bearings on a bicycle, the mere overtightening of the cones (or headset, or axle of any sort), would put permanent dents into the ball bearings. |
Bicycle ball bearings on the other hand are very squishy. They will return to the shape of a ball if you were to squeeze them. |
wtf? |
But what do you say about the other methods of causing pits? The ones in the link too? |
It's simply going to pit wherever you'll expect there to be more force on the races than the other parts. |
my friend cannot keep his bike stable at speeds above 20mph, it tends to want to wobble and not want to stand straight, 20inch fat tires on a lectric xp1, any idea why this might be happening. I figured it wasn't enough fork rake but i'm not an expert in geometry |
It's a lectric xp what you expect |
Small , stumpy, fat tyre folding ebike |
What tire pressure are they running. Fat tires suffer from self steer, which gets worse the less air there is in the tire |
I think he was running about 30 |
I’ll have to ask him though |
Is this true on motorcycles as well? |
I run a fat tire for mud bogging and transporting science equipment in rough areas |
Never had this issue with low pressure but I also don’t go 30 on it lol |
30 is actually decently high pressure for fat tires. What his tire profile. Is it rounded or more flat. Shape affects selfSteer and tracking |
Motorcycles tend to have properly shaped tires etc. |
Has absolutely nothing to do with his question. |
They are good bikes |
At least I had a rustic chain on my bike instead of newer rims and a 42t chainring. LOL |
they're knobbies, he and I work together in the forest, its just his only form of transportation. The front tire is actually very similar to my buddies harley believe it or not. |
No I meant the actual. Shape. Of the tire. If u look at it from the front. Is it more rounded or flat. And not surprised, fat tires are just shitty moto tires. |
they're round |
I can cut the plastic on my shifter triggers with my thumbnail??? Dafuq??? |
CHeap copy or something lmao? |
my deore shifters be solid af |
There is NO way. Unless someone stole my originals without me noticing |
lol |
Would be an accomplishment that tho hahaha] |
Look at this fucming shit |
How has this not snapped off already if its like this |
lol |
I had some cheapy altus shifter, Coulda been a clone, It stopped working properly at one point, A few bits fell out of it, Then started working mint again lmao |
I have another shifter near me that seems to be the same plastic. Squishy. Smooth. |
And this shifter. This one isnt being scratched by my fingernails. It feels rougher and harder. |
Reminds me of the valve controller plastics |
Why buy grip tape for shifters if you can just rough it up on the spot with your finger? |
lmao |
Plastic can degrade when exposed to things. Such as uv, cleaners, and other chems |
I doubt its seen much of those. Northern xountry lol |
We get a decent amount of UV even in the north. Ud be surprised |
I REFUSE to believe |
OK. I refuse to refuse u to believe |
NOOOOOOO |
So, my basic conclusion is that this plastic is probably somewhere between the likeness of rubber and plastic. |
If they put on a really tough, strong polymer that were scratch-resistant, the fingers would slip away very easily. |
So, they put on a squishy polymer instead. |
that's probably a coating that's degrading |
not the actual plastic |
can confirm a 1500w hub does not like 4000 watts |
Well yeah, I could have told you that lol |
@KopaZ could have |
he burned out two hubs on 3kw |
üòÇ |
anyway to revive it or is she gone for good |
500aud for a 3kw wheel ugh |
Well it was... way more than 3kw. 3kw is what i run at peak with field weakening on the 9c hubs on amz |
4kw even with cooling is where it dies real quick... but i think you can do like max 10s peak and let it cool if you have enough cooling |
3kw i would definitely not pull continuously over hills even with good cooling |
You should be able to get away with 3kw if its actually 1.5kw rated hub |
If you got ferrofluid and heatsink on it |
possible |
I thought about this too |
yeah well the setup is a 72v 60a so like 4kw most of the time, after 7km the motor was gone. i wasnt even abusing it tho just going up and down the road with very regular breaks. the thing is my mate who runs the same setup has a different brand (but also rated at 1500w) and it lasted him 800kms. maybe his brand is better with taking more watts or something |
nah didnt have anything on it tho |
i was planing to install it soon but yeah too late now |
So no heatsink/fluid mods? |
nah man |
Yeah i think because your surface area isnt matching the heat output i think you need to have prereq mods |
Maybe the other person could measure how thick windings are and compare to yours.. if you still have that and they want to open it up. |
Very dobtful people will do that |
he offered to give me his motor for free since his controller on his bike bunrt out |
so ill see then yeah |
wow |
Lol |
its a very clapped out motor tho but yeah free is free |
So you have burnt motor, he has dead controller |
haha yep |
What controller did he use? Any pics? |
72v 60a sine wave, same one im running atm |
Has to be dead mosfets |
Is it like sabvoton ones or vesc |
Or some amazon off the shelf ones |
https://www.ebikepartsau.com/product-page/60a-ebike-smart-controller-1500w-2000w-3000w-5000w |
it looks like the amazon ones but sine wave is proper |
idk for sure but thats what ive been told ^ |
would hate to find out theyre the exact same as the cheap amazon ones haha |
yeah thats exact same as cheap amazon controller lol |
oh boy |
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