Reflections echo reflexions
- Thread starter flathill
- Start date
SlowCo
1 MW
Those look great!
Please post more photo's if you have them of the builds.
Please post more photo's if you have them of the builds.
Grantmac
10 kW
Is that a combination sprocket and brake rotor?
+1 on pictures and specs....
+1 on pictures and specs....
Chalo
100 TW
Grantmac said:
Yep. Horrible, horrible idea. Chains need lube but brake pads need absence of lube.
liveforphysics
100 TW
It seems like a horrible idea, but for a rear brake its not so bad in practice. I rode that bike many times and never felt like the rear brake was inadequate.
Chalo
100 TW
liveforphysics said:
I'll take your word for it, but my experience with bicycle disc brakes includes a whole lot of throwing away pads that got a tiny bit of oil or grease on them. Heat makes it seep in so it can't even be sanded away.
liveforphysics
100 TW
The pads were totally saturated with lube, but the caliper ratio was still plenty. Motorcycle brakes can squeeze pretty hard. It does make non-linear braking force feel as the pads heat and boil oil vapors out, but for a rear brake I personally only use them for little blips to adjust the attitude of the bike or for honing, so the non-linearity wasn't so bad, as the front brake had great power and was linear.
I had a friend who used an "O-ring chain" on a Honda 750 where each link had an ostensibly life-time amount of synthetic lube trapped around each chain pin.
It was his only means of transportation. He never lubed it, and it lasted years. He stated that if it ever failed, he would get another of the same.
I'm not saying it's a good idea, but...they do exist.
It was his only means of transportation. He never lubed it, and it lasted years. He stated that if it ever failed, he would get another of the same.
I'm not saying it's a good idea, but...they do exist.
liveforphysics
100 TW
spinningmagnets said:
Dry outside surface on an Oring or Xring chain is often the longest life for sprocket and chain. This is due to not trapping sand and abrasive grit into the lube.
I only mentioned that because when someone is building a custom E-moto, there are dozens of design issues that must be compromised and a decision made. Choosing a sprocket-rotor / sprotor can be very helpful to know about to help certain builds.
Knowing about an O-ring chain might make a sprotor a viable option. The same friend used a plastic wheel-sprocket and it ran very quietly. I suspect it wore out easily and needed frequent replacement, but he liked the quiet.
Knowing about an O-ring chain might make a sprotor a viable option. The same friend used a plastic wheel-sprocket and it ran very quietly. I suspect it wore out easily and needed frequent replacement, but he liked the quiet.
Grantmac
10 kW
If designing custom parts perhaps a caliper running on the inside of the srotor?
SlowCo
1 MW
:?
Funny how this thread derailed immediately to discus the use of a "sprotor" instead of focusing on the really interesting parts...
I want to learn more about the design of the frames, which motors, controllers and battery packs are used. :wink:
Funny how this thread derailed immediately to discus the use of a "sprotor" instead of focusing on the really interesting parts...
I want to learn more about the design of the frames, which motors, controllers and battery packs are used. :wink:
jonescg
100 MW
SlowCo said:
Ask Farfle
SlowCo
1 MW
flathill said:
That's just rude. You drop these gorgeous pornEgrafic images and don't give us any more info nor extra photo's...
Don't keep these naked beauties to yourself. At least drop a link or be more generous with info :wink:
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