1974 Yamaha RD60 barn find

Recently acquired a 1974 Yamaha RD60 with 344 on the odometer. Missing some parts, but had nasty mouse nests as a bonus. Just got it home yesterday, and thought I would start a progress listing.

What’s missing?

Turn signals, plastics, sections of wires, key, battery, and the petcock is shot and leaking.

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Re: 1974 Yamaha RD60 barn find

Is that a moped?

Re: 1974 Yamaha RD60 barn find

Congrats! What a find... I've been looking for one for a while. They don't seem to surface so much.

Re: 1974 Yamaha RD60 barn find

Probably Fred /

Those are nice very cool almost Moped like bikes with beautiful gas tank seat look but don’t let the speedometer fool you for they’re not very fast/hard to keep up with traffic, The claimed low 50s mph is if you weigh about 120 pounds, ridin when there’s no wind/drafting a truck or going slightly downhill, still a good find tho

Re: 1974 Yamaha RD60 barn find

Sweet bike... why are the tail lights so awful on these bikes tho. I can't ever see that to have been a style. Have fun on the resto!

Re: 1974 Yamaha RD60 barn find

Dirty30 Dillon /

> Jay Rivett Wrote:

> -------------------------------------------------------

> Sweet bike... why are the tail lights so awful on these bikes tho. I

> can't ever see that to have been a style. Have fun on the resto!

Standard UJM Stanley lights. Thats justwhat was spec'd.

Re: 1974 Yamaha RD60 barn find

Question;

Anyone know if you NEED a battery to start er up? The battery was cracked, so I will need a new one, but I want to try to rev it up to test.

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Re: 1974 Yamaha RD60 barn find

It shouldn't need the battery.

Re: 1974 Yamaha RD60 barn find

> Joel P Wrote:

> -------------------------------------------------------

> It shouldn't need the battery.

Are you sure? All my old yamis had to have a battery for them to run. The latest one I had was a 72 so not sure if things changed?

Re: 1974 Yamaha RD60 barn find

Yep.

Most old bikes like these the ignition side would be independent of the charging circuit.

Follow the source coil circuit, it in no way follows any of the lighting/rectifying circuit. The only place where they mingle is the start stop switch, but they don't interconnect.

Re: 1974 Yamaha RD60 barn find

Dirty30 Dillon /

That excludes the whole era of 60's-70's Hondas that were DC-only systems, so they would not throw spark at all w/o a charged battery.

Re: 1974 Yamaha RD60 barn find

> Dirty30 Dillon Wrote:

> -------------------------------------------------------

> That excludes the whole era of 60's-70's Hondas that were DC-only

> systems, so they would not throw spark at all w/o a charged battery.

And , early 80s on some big Hondas .

Re: 1974 Yamaha RD60 barn find

For sure, any DC CDI or DC fired iggy, you need a battery.

But most of these small bore DT, RS, RD's of this era were of this design. Not sure about the electric start ones as those are rare and also dumb.

You may also come across some odd ones that use a DC switched relay to break the kill switch for the AC fired CDI/points circuit. 2000's Piaggio/derbi scooters were like this. (edited)

Re: 1974 Yamaha RD60 barn find

Probably Fred /

> Agus Hartono Wrote:

> -------------------------------------------------------

> Love what you're doing here guys, it's kinda nice information for all

> bikers out there. ~ Vendor Jual Brankas ~

Spam post ^

Re: 1974 Yamaha RD60 barn find

Well, here we are...

As well as...

https://www.facebook.com/Stinks75RD60Yamaha

Re: 1974 Yamaha RD60 barn find

My main switch has 5 wires.. There is also a BLUE wire not shown in this diagram.. UGH

Re: 1974 Yamaha RD60 barn find

Re: 1974 Yamaha RD60 barn find

clean them points change the condenser and plug , basically mopeds from here.

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