I have acquired a 1970 yamaha h3d, well that's what yamaha told me from the vin number. It has been sitting for 20+ years. The restoration is slow but is going fine parts are hard to find for that exact model but have been sourcing parts off various other similar models. Just wondering if anyone knows where these bikes were released and if there many made or if they are called another model because all the parts websites I have found do not list this model any info would be great

I'm not that familiar with the H3D is that the one that looks like a C50?

Would this be the type of thing your talking about ? This is an HD3 according to the WEB. It does look like a C50 tho.

Thats not the one I was thinking of!

I'll have a look on the web..

This what thought?

https://www.google.co.uk/search?q=yamaha+h3d&espv=2&biw=1206&bih=559&tbm=isch&imgil=8Q6cHVtONYgC1M%253A%253Bhttps%253A%252F%252Fencrypted-tbn0.gstatic.com%252Fimages%253Fq%253Dtbn%253AANd9GcSZ671Z-Q4cJoitxXg-FlTRZMUOTTW9N4KiUHg4mNuSwVTUYgfRjg%253B351%253B326%253BhycgEDwVFKiOiM%253Bhttp%25253A%25252F%25252Fwww.ebay.com%25252Fitm%25252FYamaha-AT90-FS1-G6-G7-L5T-YG1-YG5-YGS1-YJ1-YJ2-YL1-YL2-Rear-Brake-Stop-Switch-JP-%25252F250863916756%25253Fforcev4exp%2525253Dtrue%25252526item%2525253D250863916756%25252526vxp%2525253Dmtr&source=iu&usg=__G6-EPtiwXlX9dqHJzJBobRNaB-A%3D&sa=X&ei=4paJU_eUOYasO8bEgbgL&ved=0CFsQ9QEwAg#facrc=_&imgdii=_&imgrc=8Q6cHVtONYgC1M%253A%3BhycgEDwVFKiOiM%3Bhttp%253A%252F%252Fi86.photobucket.com%252Falbums%252Fk83%252Fcreaterseed%252FMotor%252520Bike%252FYamaha%252F1967YamahaU5D.jpg%3Bhttp%253A%252F%252Fwww.ebay.com%252Fitm%252FYamaha-AT90-FS1-G6-G7-L5T-YG1-YG5-YGS1-YJ1-YJ2-YL1-YL2-Rear-Brake-Stop-Switch-JP-%252F250863916756%253Fforcev4exp%253Dtrue%2526item%253D250863916756%2526vxp%253Dmtr%3B351%3B326

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Look for late YA parts, early YB parts and Santa Barbara parts. Some should be common. Remember that later bike parts would also be used as many bikes shared parts over many years.

I'm unfamiliar with the c50. that picture is the exact sort of thing as mine yes, thanks for the advice