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/diy/ - Do It Yourself

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569920 No.569920 [Reply] [Original]

Hello /diy/!

Despite my ridiculous diagram I have a serious idea and the means to execute it.

I want to make an in-home bike trainer so I can ride my bike inside and if possible I want to make it generate electricity. I have no experience with electronics but I have the resources to build the structure and I really want to make it.

so...

>what kind of materials would be best to make this?

I initially thought I'd buy some wooden cylinders and attach them to a metal scaffold but I'm really not sure.

what do you think?

>> No.569925

Your diagram is indeed retarded. Have you googled 'stationary bike stand' and 'bicycle generator' ? Because once you do, you'll have a much better idea of what is involved and what you're trying to do.

>> No.569927

Why not get an exercise bike and attach a generator to the flywheel?

>> No.569940

the correct question is: why, OP?

>> No.569943

>>569940
I go to an art school as a sculpture major and I want to try my hand at something kinetic that requires a lot of craftsmanship. I also want to explore using electronics but I have a feeling it's way over my head.

>> No.569954
File: 18 KB, 635x357, 1387420204563.jpg [View same] [iqdb] [saucenao] [google]
569954

>>569943
I know this isn't as faggy as your art school sculpture but this is some kind of bicycle-generator used by a prison. Also, isn't kinetic art kind of 2006?

>> No.569964

>>569920
lets get serious op.
do not support the bike by its wheels, you cannot balance on it for long unless you are secretly a gymnast.

support the bike on its rear axle stubs, this should be part of a rigid frame. Possibly grinding posts (like on a bxm) will help you out here.

to recover energy from the bike you need a roller as you say, the roller should be part of a lever system with either a weight or a spring at the other end to keep the roller pressed against the wheel.

the fact that you have the front wheel on the bike in your diagram is so stupid i don't know where to begin.

if you fancy doing it that way just buy a treadmill and cycle on it. rip out the electronics and connect the motor to whatever you want to power via some kind of rectifier

>> No.569966

>>569920
My brother built the roller thing you describe. You can't possibly get it up to high enough speed to give you stability without a motor driving the rollers.

>> No.570033

What is making the front wheel spin?

>> No.570054
File: 484 KB, 200x149, 1387431941259.gif [View same] [iqdb] [saucenao] [google]
570054

>>569964
>the fact that you have the front wheel on the bike in your diagram is so stupid i don't know where to begin.
>Your diagram is indeed retarded.
Hahaha. Man reading these kind of comments makes me crack up. For some reason people pointing out the retardedness of something which is so obviously retarded is hilarious

>> No.570060

/n/ here. your design is indeed ridiculous...but you're trying to make art so I'm not sure if you want something functional/efficient or not?

>> No.570082

>get bike, drive belt and an alternator
>attach the belt to the back wheel and alternator
>raise bike up using steel rods from the back axle
If you bike 20 min a day you can probably pay off the alternator in a year since you don't generate a lot of electricity.

>> No.570086

>>569920
OK OP, this is not the first time this sort of thread has been posted here..

1. Rollers are used all the time for training and for warmups by competitive cyclists and any cyclist who needs/wants to train indoors. Ignore those in this thread who are saying they don't work or can't be built. That being said rollers are much more difficult to use than the other type of stationary trainer, which clamps onto the rear axle on it's ends and holds the bike in position.

2. Yes, you can generate electricity with your bike. However if you think that you're going to significantly reduce your electric bill by doing this then I'm sorry to inform you that you will not Please, don't make me type out all the math proving this, just take my word for it: Even if you rode for an hour a day several days a week, you would only save about $1 on your electric bill. It's just not practical. The exception here is if you're somewhere where there is NO electricity whatsoever, and you can't use solar panels, which are much more efficient.

All that having been said: Do as you please, but as always you're better off riding your bike outdoors whenever possible.

>> No.570230
File: 10 KB, 250x246, 1387460772442.jpg [View same] [iqdb] [saucenao] [google]
570230

>>570033

>> No.570469
File: 146 KB, 2312x1288, Stationary Bike Generator Power Diagram 01.png [View same] [iqdb] [saucenao] [google]
570469

>>569920

>> No.570478

>>569964
Dammit, I'm sad this guy beat me to it. I wanted to rip OP a new one for putting the front wheel onto a roller too.

>> No.570482

>>569920
The front wheel would not move, there is no point in putting 4 cylinders.

>> No.570484

>>570086
It looks like you're the only person here other than OP that has ever heard of rollers.

>>569964
>>570478
If strictly using this for generating electricity, you would not have the front wheel because you wouldn't use rollers. Since OP wants rollers, you would have the front wheel on cylinders that are attached to the back rollers with a belt. This forces the rider to focus on balance in addition to the workout.

>> No.570524

>>569964
>>569966
>talking out of your ass

>> No.570915

>>569964
>if you fancy doing it that way just buy a treadmill and cycle on it. rip out the electronics and connect the motor to whatever you want to power via some kind of rectifier

I'm not sure OP realizes you can ride a bike on a treadmill.

>> No.570917
File: 22 KB, 300x224, 1387595405295.jpg [View same] [iqdb] [saucenao] [google]
570917

op is this you

>> No.570919

>WHAT IF THE OP MADE THE BICYCLE 2-WHEEL-POWER, BY ADDED A SPROCKET AND CHAIN TO THE FRONT WHEEL TOO?

>> No.571263
File: 150 KB, 2312x1288, SameThingEasierToUnderstandandBuild.png [View same] [iqdb] [saucenao] [google]
571263

>>570469
Same thing,. but easier to understand and build. Looks like a fucking autist made that lol.

>> No.571267
File: 42 KB, 200x213, iron giant godot dean mccoppin coffee.jpg [View same] [iqdb] [saucenao] [google]
571267

>>570469
>>571263

Did whoever drew this consider that it's going to be putting 12V on the "motor/generator" all the time?

>> No.571301

Aren't the cylinders spinning the wrong way?

>> No.571304

Take off the wheels and mount it on something sturdy, put a magnet on the gear and a coil of wire next to it.

>> No.571315

>>571267
>>571263
In no way does that put 12V on the motor. Check your self before you wreck yourself.

>> No.571373

>>569920
why the fuck is the front wheel on rollers lol

Also have fun falling down instantly because you have no forward momentum.

This looks like something a 9 year old would dream up.

>> No.571374

>>571373

You can cycle perfectly fine while standing still, as long as your wheels are turning..

>> No.571380

>>571263
That's horrible. You should be ashamed of yourself.

>> No.572581

>>569943
>artschool

That stupid drawing makes sense now.
idiot

>> No.572587

>>569920
All these plebs don't know that there are bike tracks like that, you can ride inside on.

IIRC the front rollers are connected to the back so that the front wheel turns to. Rotation of the wheels keeps you balanced.

But you wouldn't want a generator on one of those. If you want to use it for generation then definitely don't have the front wheel on and also have it solid in place so no balancing is involved.

You shouldn't combine the two concepts.

>> No.572741

you'll also notice from the diagram that op has decided that the wheels will spin backwards.