What is this bike?? Yamaguchi sports frame

[jimmyringo]

Hi all,

Can you help me identify this bike?
- Full Shimano 600 arabesque
- Serial G2027
- "Mangalloy" sticker on frame
- Yamaguchi Sports Frame Sakai Japan
- Very light frame
- Ukai rims
- Chrome fork and chainstay so the black paint looks OG

I'd love to spray this and restore with new decals if I can work out the brand of the bike.















Thanks

[Roisin79]

I had a Yamaguchi "Hankook" once, nice frame, Tange Prestige. Should never have sold it actually. I did so because despite the paintwork being superb - the bike had hardly been ridden - the chrome plating was horrific, either rusty from underneath or full of strange blemishes as it they hadn't polished it properly. I've since noticed this in other Japanese things.

[jimmyringo]

Are my images coming up?

Is there an easy way to put in images?

[P!N20]

I don't think you can embed images on iCloud.

Here are the links people can click on:

https://share.icloud.com/photos/0f7HOZp ... kcsgJYqlow
https://share.icloud.com/photos/089O31g ... Jv3Psd7phg
https://share.icloud.com/photos/045tLZB ... 0_p6EG6SOQ
https://share.icloud.com/photos/064c3AJ ... t_Rxfhc7mQ

[jimmyringo]

Thanks P!n20

I will move them to google drive to see if that works.

Cheers, Jim

[case310]

There is a builder in the USA named Yamguichi. He is from Japan and learned to build frames at 3Rensho. At some point he moved to the US and located in Colorado. He built the USA team bikes for a while in the 1980's. He also runs a frame building school that has given many builders a start. He is highly respected and still in business. He has a website and could probably tell you if it one of his. If it is one of his it might be an earlier one from Japan. The seat lug doesn't look like his later eforts. His website has a lot of pictures of his bikes built in the USA.
They don't come up for sale vary often in the US, but I have one of his TT bikes

[Roisin79]

There is a builder in the USA named Yamguichi. He is from Japan and learned to build frames at 3Rensho. At some point he moved to the US and located in Colorado. He built the USA team bikes for a while in the 1980's. He also runs a frame building school that has given many builders a start. He is highly respected and still in business. He has a website and could probably tell you if it one of his. If it is one of his it might be an earlier one from Japan. The seat lug doesn't look like his later eforts. His website has a lot of pictures of his bikes built in the USA.
They don't come up for sale vary often in the US, but I have one of his TT bikes

Different Yamaguchi. The Jap ones were made by Miki I believe. When I had mine I made the same mistake and wrote to Yamaguchi...got a very, very long and stern reply from Yamaguchi-san..."not mine"

[SpeedDealer]

I had a Yamaguchi "Hankook" once, nice frame, Tange Prestige. Should never have sold it actually. I did so because despite the paintwork being superb - the bike had hardly been ridden - the chrome plating was horrific, either rusty from underneath or full of strange blemishes as it they hadn't polished it properly. I've since noticed this in other Japanese things.

I have a green Hankook Yamaguchi, you don't think Koichi Yamaguchi made this frame? I messaged him on Instagram but no reply yet. Can you tell me more about this frame? it is one of my favorite bikes.