Blog
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Mr. Rando's talk on "Geometry"
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Geometry refers to the overall dimensions and angles of each part of a frame. It's the foundation that determines how a bike feels to ride and wha... -
We're adding four new standard colors to Sig.Rando!
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We are adding four new standard colors for Sig.Rando.You can choose your favorite color from a total of eight options, with no change in the frames... -
[Held in Ehime] Sig. Rando Test Ride Event at Branch Coffee on July 16 (Sat) & 17 (Sun)
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![[Held in Ehime] Sig. Rando Test Ride Event at Branch Coffee on July 16 (Sat) & 17 (Sun)](//ride.grumpy.jp/cdn/shop/articles/dsc06951_720_455x300@2x.jpg?v=1657007295)
The Sig. Rando Test Ride Event will be held at Branch Coffee in Saijo City, Ehime Prefecture, for two days on Saturday, July 16th, and Sunday, Jul... -
[Updated July 1st] Main complete bike and frame stock information
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![[Updated July 1st] Main complete bike and frame stock information](//ride.grumpy.jp/cdn/shop/articles/DSC06509_455x300@2x.jpg?v=1656677078)
The Sig.Rando owner's meeting was held the other day.Owners of Sig.Rando bikes gathered, and I was glad to see them interacting.We interviewed ... -
[Sig. Rando Bike Custom]
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![[Sig. Rando Bike Custom]](//ride.grumpy.jp/cdn/shop/articles/IMG_6148_455x300@2x.jpg?v=1656395606)
One of the great things about the Sig.Rando is how easy it is to transfer parts from your old bike.The frameset uses common standards, so you can ... -
Sunday, June 26: Sig.Rando Meeting!
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Titled: "Show us your Sig.Rando"This Sunday, the 26th, Sig. Rando bikes and their owners will gather at Grumpy. We will be displaying Sig.Rando ... -
[Sig.Rando Bike Custom]
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![[Sig.Rando Bike Custom]](//ride.grumpy.jp/cdn/shop/articles/BF81371F-76EC-48C2-AB2C-1066CDBA31C0_455x300@2x.jpg?v=1655724524)
A custom-built bicycle, one of a kind, always looks cool, no matter when you see it. This time, we'd like to introduce another stunning creation th... -
No water, no time. How to wash your bike in 10 minutes
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A well-maintained bicycle feels good to ride. If you wash it yourself, you'll feel even more attached to it. However, for various reasons, such as ... -
Customized into a cool steamroller by adding eyelets with welding and repainting!
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This Steamroller was borrowed from senior staff member Enomoto-san and I've been using it ever since. I customized it to be even cooler by adding ... -
[Regarding our Bicycle Parts Trade-in/Purchase Service]
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![[Regarding our Bicycle Parts Trade-in/Purchase Service]](//ride.grumpy.jp/cdn/shop/articles/contact_used_455x300@2x.jpg?v=1651312003)
"We want to deliver products that can be cherished and used for a long time." With this in mind, Grumpy proposes bicycle products every day. ... -
Update 10/23: Grumpy presents gravel road bikes and touring bikes available for immediate purchase.
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Thinking of starting cycling to get more exercise or for a change of pace? Then a gravel road bike is for you! It's a versatile model that's fast ... -
Key considerations when choosing a pannier bag for city riding or commuting
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Pannier bags, which allow you to carry a large amount of luggage next to the wheels.
You might associate them mainly with bicycle touring,
but they are actually very useful for commuting and daily outings.
![[Held in Ehime] Sig. Rando Test Ride Event at Branch Coffee on July 16 (Sat) & 17 (Sun)](http://ride.grumpy.jp/cdn/shop/articles/dsc06951_720_455x300@2x.jpg?v=1657007295)
![[Updated July 1st] Main complete bike and frame stock information](http://ride.grumpy.jp/cdn/shop/articles/DSC06509_455x300@2x.jpg?v=1656677078)
![[Sig. Rando Bike Custom]](http://ride.grumpy.jp/cdn/shop/articles/IMG_6148_455x300@2x.jpg?v=1656395606)
![[Sig.Rando Bike Custom]](http://ride.grumpy.jp/cdn/shop/articles/BF81371F-76EC-48C2-AB2C-1066CDBA31C0_455x300@2x.jpg?v=1655724524)
![[Regarding our Bicycle Parts Trade-in/Purchase Service]](http://ride.grumpy.jp/cdn/shop/articles/contact_used_455x300@2x.jpg?v=1651312003)
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