The knife-sharpening bicycle

Peter Kahugu of Banana Hill just outside Nairobi makes a living using his bicycle.

And no, he is not a professional cyclist.

AfriGadget reporter Afromusing and I had an opportunity to interview Peter who has modified his bicycle with a belt, a set of tensioning pulleys and a grinding stone to make it a knife-sharpening machine. By kicking the bike up onto its stand and engaging a gearing system, he is able to use “leg-horsepower” to drive a grinding wheel and sharpen knives while “on the move”.

Peter has been at this for 2 years now and he makes about Kshs 500 ( app. 10 US$) a day by riding his mobile workshop from client to client sharpening all their knives as he goes. The grinding stone he uses has lasted an astounding 2 years and he has had to replace his drive belt a couple of times but that is as simple as cutting up a long strip of rubber from an old car or bicycle tire inner tube.

Be sure to click though on the image for video on YouTube of the Peter and his bike in action.

The knife-sharpening bicycle

78 comments » Write a comment

  1. Pingback: fresh wordpress installation » DIY gadgets in Africa: the knife-sharpening bicycle

  2. I’ve seen similar bikes here in Arusha. This blog is a great idea, thank you for showing that Africa is not only starving children.

  3. Pingback: Ed & Al's Autosound: Crooks > Why Design won't save the world

  4. Pingback: If you love LEDs on computers I'm sure you wanted one of these. - Electronic Circuits Projects Diagrams Free

  5. Pingback: Bicycling TV: How to use Gameboy to prevent diabetes, lower fuel costs, and clean the air « Grassroots Science

  6. Pingback: Pedal Press - July 2007

  7. Pingback: Knife Sharpening - Dogpile Web Search

  8. Pingback: Tasty Morsels: August 2007

  9. Pingback: urbanseeds: Bring your knife to the next bike fight...

  10. Was having a discussion about this apperatus with my friends, wh would not believe

  11. Pingback: Perisos Security Technologies » Constraints and innovation

  12. Pingback: my barrel organ » archive » Bike-powered knife grinder

  13. Pingback: …My heart’s in Accra » Innovation from Constraint (the extended dance mix)

  14. Pingback: Innovation from Constraint (the extended dance mix)

  15. Pingback: A bicycle powered knife-sharpening machine | Ascension University — Post Script - Notes about Food, Housing, and Job Security by Ascension University and the Aevia Group

  16. Pingback: knives mac

  17. Pingback: The Best Knife Sharpener

  18. At Transmission Warehouse in Las Vegas, NV, our customers come first. We provide prompt, honest transmissions services at reasonable prices. Our staff is well-trained to get you and your loved ones safely back on the road. We are the best Transmission Shop in Las Vegas! Don’t hesitate to call us today for any transmission service estimate. Visit today.

  19. 公式店舗 鮮やか 不朽 せいふく 最安値価格 キラキラ みつど 保温性 新作 超越 最安心 ヴィンテージ風 低価格 最も優遇の価格 彼ら 品質保証 かぎホック 仕付け糸 専売店 親族 大人気
    公式店舗 愛用 激安 割引 ウェディング フラッツ 彼 サンダル 超越 最人気 寛大な 最も優遇の価格 は好き 大好き 便利 ファイン 保温性 最新登場 人気が高い きぬ 専売店舗 盛大 素晴らしい シャツ カラフル

  20. Hello there, You have performed an excellent job. I’ll definitely digg it and in my view suggest to my friends. I’m confident they’ll be benefited from this site.

  21. Hey I’m new here. I’m sorry if this
    is not the right place for this post but I was hoping
    some one here on would be able to answer me some information aboutinverter as it it is currently we have one project. Anyassistance would be greatly appreciated! great