theoretical question with IDTs

[Friedpiggy]

So I recently watched a movie on Netflix - "The boy who harnessed the wind" and it got me thinking. Remember those old school dynamo lights for your bike as a kid? The ones where you had a thingy mounted on your frame with a wheel rubbing against the tyre that generated the electricity for your front light.

Why dont IDTs like the Kickr that need to be plugged in use that tech to remove the plug in need? I mean you are pedaling away and the flywheel has a dynamo connected to it that generates the electricity to power the thing.

[Johnny82]

It exists, the Tacx Bushido does not require external power

[warick_wrx]

Olympic Cyclist Vs. Toaster

 

https://www.youtube.com/watch?v=S4O5voOCqAQ

[thisismyotherbike]

Tacx Neo functions 100% without external power using power you generate. It's the only major criticism Shane Miller leveled against Kickr. Engineers...

 

By the way, extreme endurance riders use dynamo hubs on the front wheel to charge lights, head units and phones. Beats carrying brick-sized batteries with you for the duration of the Munga!

[The Ouzo]

Tacx Neo functions 100% without external power using power you generate. It's the only major criticism Shane Miller leveled against Kickr. Engineers...

 

By the way, extreme endurance riders use dynamo hubs on the front wheel to charge lights, head units and phones. Beats carrying brick-sized batteries with you for the duration of the Munga!

Its funny that this thread popped up and this post in particular.

 

I was having one of those sleepless nights last night and one of the thoughts going through my head is why we are not harvesting power from the bike to power all the latest electronics we now carry with us.

With the advancement in tech, LED lights dont consume that much power, so would not require to much regeneration, but the rest of the power can then be fed to GPS, smartphone, the array of sensors we are strapping to the bikes etc.

[fanievb]

Its funny that this thread popped up and this post in particular.

 

I was having one of those sleepless nights last night and one of the thoughts going through my head is why we are not harvesting power from the bike to power all the latest electronics we now carry with us.

With the advancement in tech, LED lights dont consume that much power, so would not require to much regeneration, but the rest of the power can then be fed to GPS, smartphone, the array of sensors we are strapping to the bikes etc.

 

you mean a dynamo hub?

 

 

[The Ouzo]

you mean a dynamo hub?

 

 

well I did not know such a thing existed until it was mentioned in this thread. In my mind I had a more modern and efficient version of the old dynamo from the past. The one that you would push up against your tyre and the faster you rode the brighter the light would get.

[dannygirl]

made me think about Stanley's lamp in Ladismith...

 

http://blog.sa-venues.com/attractions/stanleys-light/

[Karman de Lange]

Most IDT uses magnets and aluminium (think called lenz effect) to generate load. In the Wahoo kickr the magnets are electronic magnets (if I do quick google).  So to create power, they will have to add a dynamo  generate enough power to power the magnets and the rest of the electronics, this creates more complexity and more cost.

 

Maybe the other IDT's have permanent magnets rather than electro magnets and then you can use those as dynamo .. 

[fanievb]

well I did not know such a thing existed until it was mentioned in this thread. In my mind I had a more modern and efficient version of the old dynamo from the past. The one that you would push up against your tyre and the faster you rode the brighter the light would get.

 

https://gravelandtour.co.za/product-category/dyna-hubs/

[The Ouzo]

you mean a dynamo hub?

 

 

I have done some googling. Consider me informed. Wow.

[FirstV8]

well I did not know such a thing existed until it was mentioned in this thread. In my mind I had a more modern and efficient version of the old dynamo from the past. The one that you would push up against your tyre and the faster you rode the brighter the light would get.

I still have two of them . They work a treat especially on down hills at speed . I used to carry a spare globe with me as i would often blow it at high speed and be riding in the dark  .Its pumps out 6 volts .

[DieselnDust]

So I recently watched a movie on Netflix - "The boy who harnessed the wind" and it got me thinking. Remember those old school dynamo lights for your bike as a kid? The ones where you had a thingy mounted on your frame with a wheel rubbing against the tyre that generated the electricity for your front light.

 

Why dont IDTs like the Kickr that need to be plugged in use that tech to remove the plug in need? I mean you are pedaling away and the flywheel has a dynamo connected to it that generates the electricity to power the thing.

 

 

TACX NEO generates its own electricity for powering itself when used unplugged