Search found 460 matches

by SafeDiscDancing
Feb 27 2022 9:25pm
Forum: Bike Mechanical & Structural
Topic: Thai drag bike tires.
Replies: 26
Views: 1070

Re: Thai drag bike tires.

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Pretty cool stuff.
by SafeDiscDancing
Feb 27 2022 7:02pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

Bike Rack Shock Mount Supports.jpg Okay so today was very tedious. I added a bunch of supporting braces to make the rack have "rack like features" like things you can hook a bungee cord to. The tubing is really, really, really thin... probably 1/32" rather than 1/16" used elsewh...
by SafeDiscDancing
Feb 27 2022 6:55pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

https://endless-sphere.com/forums/download/file.php?id=312384 If you put one hand on the headtube, one hand on the seat tube, and shake bike does it wag like a fish? No, the swingarm is a monster. It will do fine. The shock has been disappointing because the spring is soft but it is usable. But you...
by SafeDiscDancing
Feb 27 2022 12:50pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

Morning Sunshine.jpg Just a picture from a different angle. More Views.jpg With battery. LIGHT WEIGHT I can say I achieved my goals of it being light weight. Not sure of the exact weight but under 60 lbs seems realistic... only need to add a few more things which might get it to 60 lbs but overall ...
by SafeDiscDancing
Feb 27 2022 12:02pm
Forum: Battery Technology
Topic: Max charge current to have balance on?
Replies: 52
Views: 1398

Re: Max charge current to have balance on?

Problems arise with DIY [inferior] pack builds due to faulty workmanship and/or Grade B cells. Quality control and getting different batches are a problem. Unless you buy all the cells out of the same batch made at the same time you will have some differences. Then if you spot weld your cells (not ...
by SafeDiscDancing
Feb 27 2022 11:52am
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

1645980436-picsay.jpg Has anyone done something like this? Basically a recumbent trike with side pods for cargo. Something like that would handle really well. Maybe have the seat a little more upright and taller cargo pods compared to the image. I know they have cargo bikes with the driver pushed a...
by SafeDiscDancing
Feb 27 2022 11:36am
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

The worst such layout that has been widely adopted is the mid-steering Mexican cargo trike. Those trikes really want to ruin your day. My "guess" is that you would want a neutral middle pivot location to steer the cargo area. That bike locates the pivot too far back... it is naturally goi...
by SafeDiscDancing
Feb 27 2022 11:26am
Forum: Battery Technology
Topic: Max charge current to have balance on?
Replies: 52
Views: 1398

Re: Max charge current to have balance on?

On either end if you try to balance all cell groups to be even it will then do the OPPOSITE when the pack gets to the other end. So the whole thing becomes a kind of absurd comedy where energy is being either bled away or shuttled back and forth with no real benefit and actually it probably means mo...
by SafeDiscDancing
Feb 27 2022 11:10am
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

Probably wouldn't give it 5-stars for handling, though. In America I wonder what laws apply to four wheels compared to three? Seems that with three you flow into the ebike rules and once you hit four everyone freaks out and calls it an automobile that will require a billion regulations to be follow...
by SafeDiscDancing
Feb 27 2022 10:27am
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

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I have admired this cargo bike concept.

Has anyone ridden one?

It would be interesting to hear how they handled.

As far as bigger loads going up to 100 lbs this seems more realistic.
by SafeDiscDancing
Feb 26 2022 10:45pm
Forum: Motor Technology
Topic: Tesla carbon wrap rotor teardown
Replies: 6
Views: 577

Re: Tesla carbon wrap rotor teardown

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So they went with this design huh?

Interesting... very interesting...
by SafeDiscDancing
Feb 26 2022 9:40pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

You already saved $$$ by buying the shock so cheap! :D It's at the point of "good enough". The front forks are really soft so having soft suspension in the rear isn't bad. I'm guessing that front and rear bottom out equally now. But in a perfect world both front and rear would be stiffer....
by SafeDiscDancing
Feb 26 2022 8:49pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

At least keep our posts up. To remove them is alter the outcome what should have happened. Get back to the thread topic. https://endless-sphere.com/forums/download/file.php?id=312239 Is this a good design or not? In my view based on my understanding of bicycle physics this is a GOOD DESIGN. Address...
by SafeDiscDancing
Feb 26 2022 8:38pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

But does anyone care about this place anymore? Chalo can be a real bastard at times... but should we destroy free speech because a guy has opinions that are different? I say let's just all get along. Chalo has demonstrated some good knowledge about a lot of things so let's be open to that. https://...
by SafeDiscDancing
Feb 26 2022 7:55pm
Forum: Battery Technology
Topic: Max charge current to have balance on?
Replies: 52
Views: 1398

Re: Max charge current to have balance on?

The entire concept of giving a robot total control over your battery is one issue few people even consider. At the most simple level you really only have a limited number of cell groups and for anyone with a reasonable intelligence it's pretty easy to manage everything manually. After all if you kno...
by SafeDiscDancing
Feb 26 2022 5:24pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

Bike Rack Shock Mount Done.jpg Okay... overall five hours to get to here. The Shock is STILL a little weak despite it being pushed out to 17". With a lot of preload it should work okay, but definitely not ideal. On the positive side the front and rear suspension actually seem better matched be...
by SafeDiscDancing
Feb 26 2022 1:46pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

Spinal Tap.jpg
Spinal Tap.jpg (1.82 MiB) Viewed 296 times
Spine is in place.

Next step will be to tie all the pieces together and in as near perfect alignment as I can get.

One hour to do this step.
by SafeDiscDancing
Feb 26 2022 11:48am
Forum: EBike Technical
Topic: When is a transmission /reduction gearing appropriate?
Replies: 14
Views: 321

Re: When is a transmission /reduction gearing appropriate?

#219 go kart chains. They are very strong and you can buy the Sprockets as large as 96 teeth very easily for $20. The front sprockets are more difficult to find and for me I took a #35 sprocket and simply ground it down until it fit the #219 because they are pretty close. So maybe a 14 tooth front a...
by SafeDiscDancing
Feb 26 2022 11:32am
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

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So it did come from a classic design.

Proven by history we might say.

Traditional. Well established. Trusted. Like Mom and Apple Pie.
by SafeDiscDancing
Feb 26 2022 11:06am
Forum: EBike Technical
Topic: Vibrations because of BEMF Harmonics?
Replies: 20
Views: 552

Re: Vibrations because of BEMF Harmonics?

I think the aether and elastic properties could be placed in the same spot as hobbits and trolls when it comes to your issue. Let me bring you up to speed on what ACTUALLY happened to Tesla and his fellow real scientists of the late 1800's. First you need to know the larger picture where the "...
by SafeDiscDancing
Feb 25 2022 9:42pm
Forum: EBike Technical
Topic: Vibrations because of BEMF Harmonics?
Replies: 20
Views: 552

Re: Vibrations because of BEMF Harmonics?

On the very high level you need to comprehend what is going on. We tend to think of electricity as particles which are electrons and on some level that works in that in absolute numbers we can say a certain amount of energy passes at any point in time. But in reality the actual way things works is c...
by SafeDiscDancing
Feb 25 2022 8:28pm
Forum: EBike General Discussion
Topic: Want suggestions for cargobike with large mid-mount motor
Replies: 136
Views: 4061

Re: Want suggestions for cargobike with large mid-mount motor

https://endless-sphere.com/forums/download/file.php?id=312239 We might also remember that Chalo is rather tall and big. So adjust the distribution of his weight to this bicycle. Someone who was 5' 5" and 125 lbs might have troubles with the height of this bike. This is an example of a bike tha...
by SafeDiscDancing
Feb 25 2022 5:20pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

https://endless-sphere.com/forums/download/file.php?id=312148 So more prep work... had to grind off some stuff then sand these tubes clean. Spine Cleanup.jpg The DEFINITIVE ANSWER on the braking question seems to be "let's test it". If the real Hill Climbing Motorcycles do NOT need a rear...
by SafeDiscDancing
Feb 25 2022 4:20pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

You probably know this, but no rear brakes is not uncommon on dedicated hill climb MCs. I did not know that. It kind of makes sense because on a steep downhill 90% of the braking is with the front wheel and 10% is on the back so I can see not even having one. I find that the rear brake on a downhil...
by SafeDiscDancing
Feb 25 2022 4:02pm
Forum: EBike Build Threads
Topic: Hill Climbing eBike
Replies: 182
Views: 6363

Re: Hill Climbing eBike

I'm glad you're hill climbing not descending lets put it like that, but i can not believe your taking brakes so lightly. Or "making the rear brake so light weight". :wink: Well, I am thinking rather than weld in a bolt for this I'll build a clamp to make it temporary. Another factor is &q...