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02 Sep 2019
Your admin has not been on the site much as of late as my main computer apparently seized up :( I have had limited access, but will be back soon. Thanks. Mako

TOPIC: 1973 Yamaha RT3 Restoration

1973 Yamaha RT3 Restoration 22 Jul 2019 12:21 #1

  • Flip
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So I got hold of a 1973 Yamaha RT3 Enduro model in Baja Brown from D&K motorcycles in the UK. This bike was recently imported from Cannon Falls in Minnesota, Miesville to be precise!

Anyone interested can follow the renovation of this little beauty. I’ll stick pictures and videos from my YouTube channel as I get time :)

[URL] https://youtu.be/O8p-z2kvbG4[/URL]


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1973 RT-3 Baja Brown U.K

Re:1973 Yamaha RT3 Restoration 22 Jul 2019 12:29 #2

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Let’s see how long the strip and build takes shall we :)




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1973 RT-3 Baja Brown U.K

Re:1973 Yamaha RT3 Restoration 22 Jul 2019 12:53 #3

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Looks like it's all there bar the indicators.

Are you going back to original spec or restoring what you've got? I only ask because it looks like an aftermarket or later model front mudguard.

Is the headlight working? Let me know if you want details of a replacement that isn't sealed beam.

Alan
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Re:1973 Yamaha RT3 Restoration 22 Jul 2019 12:56 #4

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Hi Alan, going back to original spec, that front guard is a real bad bodge as you’ll see in the next video. Just got to source the proper part but they are quite rare and the ones I’ve found so far are quite expensive!

Deffo need a headlight unit, I was looking for a bulb conversion if you can help?

Thanks


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1973 RT-3 Baja Brown U.K

1973 Yamaha RT3 Restoration 22 Jul 2019 18:39 #5

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It looks pretty nice as is. Looking forward to seeing it finished. :likey
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71 Z50 Minitrail
72 RT2
74 250A
78 XT500E
06 F650GS Dakar

1973 Yamaha RT3 Restoration 22 Jul 2019 18:47 #6

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On the front fender, the DT2, DT3, and RT2 are the same...

Other years and models fenders probably fit too... just not exactly correct in the details although most people would never know...
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1963 YG1-T, 1965 MG1-T, Allstate 250, 1970 CT1b, 1971 R5, 1973 AT3MX, 1974 TS400L, 1975 RD350, 1976 DT175C, 1976 Husqvarna 250CR, 1981 DT175G, 1988 DT50, 1990 "Super" DT50, 1991 RT180, 2017 XT250

Re:1973 Yamaha RT3 Restoration 23 Jul 2019 00:35 #7

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Flip wrote: Hi Alan, going back to original spec, that front guard is a real bad bodge as you’ll see in the next video. Just got to source the proper part but they are quite rare and the ones I’ve found so far are quite expensive!

Deffo need a headlight unit, I was looking for a bulb conversion if you can help?

Thanks


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Do you know if the headlight it came with is the original (what is the Koito ref?) and is all of the gubbins related to the beam adjustment intact?

I'll amble out to the garage later and double check what I replaced mine with (original Koito/Yamaha).

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Re:1973 Yamaha RT3 Restoration 23 Jul 2019 11:59 #8

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Here’s a couple of pics of what’s present if that helps....




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1973 RT-3 Baja Brown U.K

Re:1973 Yamaha RT3 Restoration 24 Jul 2019 00:04 #9

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No offence meant here(!), but are you sure it's not working? The headlight only works with the engine running. Try testing it directly from a 6v battery.

Really, really sorry if you've done all that already!!

Headlight looks original and all parts look present and correct.

How practical are you? I ask because, in theory, you can replace the bulb. I got as far as getting mine apart, but found a replacement unit before I seriously looked into fitting a new bulb.

Those 6 tabs on the retaining ring will prise up. As I recall, the bulb sits in a rubber ring that can be prised out. You will need to smash the bulb with some implement in order to remove it from the back, but this is quite straightforward. The shards of glass should come out quite readily.

The interesting bit is trying to find a replacement 6v bulb that is narrow enough to fit through the aperture at the back, but has a wide enough rim to sit in the rubber ring. Alternatively, you could probably make your own new ring with a sharp knife, a piece of suitable rubber and a good eye.

I'll edit this post later on today to post photos of the constituent parts of the sealed beam unit, together with what I replaced mine with.

Regards.

Alan
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Last Edit: by Gr8uncleal. Reason: spelling

Re:1973 Yamaha RT3 Restoration 24 Jul 2019 00:37 #10

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Thanks Alan, deffo not working, both filaments are fubar :)


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1973 RT-3 Baja Brown U.K
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