Author Topic: 1971 Yamaha DT1 Gravel Tracker  (Read 7800 times)

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Offline Makotosun

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1971 Yamaha DT1 Gravel Tracker
« on: April 11, 2014, 05:24:28 pm »
HI Folks - Long time Yamaha enduro fan from the US. I thought I would toss out a few pictures and the back story for my 1971 Yamaha DT1 Suntanker Gravel Tracker.


The short story is I got the bike as part of a trade - three old bikes for an old aluminum boat. I only wanted one of the bikes, but the other two got tossed on the trailer before I could get out of the driveway.


The one I wanted was an XR70 for my son, but this old vintaged MX Enduro also intrigued me.





So the Black bike went to the storage for awhile, and parts sourcing began over a couple of years. last year I decided to get the darned thing done for a trip to Utah I had planned.


The tank was kind of rough, so I decided a full re-paint was necessary. I used Urethane primer, then water based color coat applied via a cheap air brush followed by a catalyzed clear. My first attempt at such a graphic job.

















The bike had a lot of neat parts that came with it, so a lot of what I was doing was just replacing rubber bits, cables, and a lot of elbow grease. The seat I completely rebuilt with new foam, refinished the pan, and a seat cover from Ryder in Canada. The motor is fairly stock with a fresh top end and still running autolube.


The wheels are vintage shouldered Akront rims, and they are wrapped with Dunlop D606 Road approved knobbies. The front suspension is 72 or so MX with the aluminum triple tree and the rear shocks are NOS Redwing hammerhead units.





Fly front bars and a custom painted NOS front fork brace finishes things out. The rear fender is a one off and the rack, though it started as a vintage aftermarket has been modified (lowered a bit) to more closely hug the rear fender.








Vintage aluminum K&N Desert foot pegs were discovered on Ebay late one night!











I am running an aftermarket aluminum sprocket in a 44 tooth version on a non-dampered MX rear hub. The size of this sprocket off the MX required a bit of massaging the lower chain guard to fit.








The use of MX hubs left me with no provision to run a stock speedo, and this bike is intended to be a streetable rider. The result was the need for a modern electronic gauge setup from Trailtech featuring a Speedo, Tach and several other features. It is mounted to the original triple tree mounts for the factory gauges, and uses a magnetic pickup on the front wheel for the speedo.





I built the bike to be my interpretation of what a Yamaha "Works" enduro might have looked like back in the day. I built it to be a looker, but not to be a garage or trailer queen. In May of 2013, the bike accompanied me to Moab, UTAH and spent a few hours enjoying the dust and views of the desert Southwest!











Thanks for following along! I will post up some of the other recent builds as soon as I get some more free time.


Offline Davey Crocket

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #1 on: April 11, 2014, 05:56:29 pm »
That's pretty cool.
QVMX.....Australia's #1 VMX club......leading the way.

oldfart

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #2 on: April 11, 2014, 06:02:05 pm »
My first bike was a DT 250  many moons ago and yours brought back many good memories.

Offline yamaico

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #3 on: April 11, 2014, 06:13:30 pm »
Nice job, with a personal touch. You'll fit in well on this site with all the other DT/YZ tragics.

Offline Mick D

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #4 on: April 11, 2014, 06:27:37 pm »
Good on ya,
What a little beauty 8) I hope you get out on it and enjoy it.
Welcome aboard.
"light weight, and it works great"  :)

Offline Iain Cameron

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #5 on: April 11, 2014, 06:51:32 pm »
Nice job, with a personal touch. You'll fit in well on this site with all the other DT/YZ tragics.
MMMM very nice RT you have , well thought out for a practical use bike . Iain (Im one of the Tragics )
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club

Offline Makotosun

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #6 on: April 14, 2014, 12:49:45 am »
I hadn't heard the term "tragics" before  :D - we call ourselves "Enduroholics". I think it means about the same!

Thanks for the welcome!

Offline vandy010

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #7 on: April 14, 2014, 05:43:03 am »
Yes, very nice indeed... 8)
what kickstart lever have you used?
As this seems to be an ongoing point of discussion/interest...
« Last Edit: April 14, 2014, 06:15:22 pm by vandy010 »
"flat bickie"

Offline Makotosun

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #8 on: April 14, 2014, 11:52:14 am »
I can't tell you for sure the kicker. It is the one out of a box that fit  :)


It is likely off an RT1 but I can't say for sure.

Offline pancho

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #9 on: April 14, 2014, 03:32:17 pm »
 Nice work, looks great!.
I have a first model RT1 which is not pretty and doesn't have any road gear with it and I occasionly race it at Nepean Raceway.

  It doesn't look pretty but My goden rule is to not do anything like cutting bits off the frame or such, so that someday it will still be restorable by someone.
 Cheers pancho.
dont follow me i'm probably off line!

Offline Makotosun

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #10 on: April 14, 2014, 04:38:57 pm »
Thanks! Pancho.


I try never to modify them in ways that are not returnable to stock unless they have been hacked before I got them. I have one DT400 that will get changed a bit, as it is destined to be a bit of a street tracker which may result in a few frame mods.


When I get that far I will post up some photos!

Offline Iain Cameron

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Re: 1971 Yamaha DT1 Gravel Tracker
« Reply #11 on: April 25, 2014, 05:47:30 pm »
Kick starter looks like a MX 250 , 360 . 73 or 74 also  75\76 YZ and MX . Iain
Yamaha tragic ; dt1, rt1, dt2, rt2, dt2mx , rt2mx , mx250, mx360,sc500, 74dt125, yzx125, yzc250, yzc400, yzd250, yzd400, yzh250, yzh80 , dt100 , xr75 ko xr80 03 , it175 82 . Not a member of any club