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-   -   1968 Yamaha DT1 Treasure/Trash? (http://www.advrider.com/forums/showthread.php?t=557469)

Valleyrider 03-08-2010 08:02 PM

1968 Yamaha DT1 Treasure/Trash?
 
Found this on Craigslist. Kinda suffering from PMS (Parked Motorcycle Syndrome). Raced a 1969 Suzuki TS250 back in the late '60s.
Moment of weakness and I brought this home...
Plan is to build a period type shorttracker. Keep it as much '60s as possible.

http://farm5.static.flickr.com/4036/...e5430c19_b.jpg

http://farm3.static.flickr.com/2786/...94ee5daa_b.jpg
It had been repainted and also had an special shock damper on the kickstart lever for the dreaded kick back..:rofl
http://farm3.static.flickr.com/2500/...cc54830c_b.jpg
Someone made sure that the mag cover was on and sealed to keep moisture out...:eek1
http://farm5.static.flickr.com/4022/...c0e5a3b5_b.jpg

More to come...

Jimmy the Heater 03-08-2010 08:20 PM

Not too shabby considering. Tho the mag/points scare me! Good luck!!!!

Valleyrider 03-08-2010 08:25 PM

Quote:

Originally Posted by Jimmy the Heater
Not too shabby considering. Tho the mag/points scare me! Good luck!!!!

This will be a real "Old School" shorttracker.
Coils will go away and the point cam will be punched out of the flywheel.
I'm going to do a total loss ignition system where a 12 volt battery, points and ignition coil are all that's there.

Valleyrider 03-08-2010 08:43 PM

The light of day has done nothing for the looks of this one...

http://farm5.static.flickr.com/4014/...6b445733_b.jpg
http://farm5.static.flickr.com/4029/...b4aea1e3_b.jpg

Some of the finer points that the light of day revealed...

http://farm5.static.flickr.com/4023/...f4765f56_b.jpg
http://farm5.static.flickr.com/4004/...bee72787_b.jpg

It has a compression release!! After looking at the head, it seemed different than the DT's I remember from those days. The spark plug threaded into the head from the left side. This one is straight in from the top...
More on this a little later.

http://farm3.static.flickr.com/2792/...69f2502b_b.jpg

bsbiker 03-08-2010 08:52 PM

DTs ?
 
Wow you are in for a lot of work! I remember back in the day the hot trick for those old DT1s was to cut the down tubes on the frame and put in a 2" spacer. It lowered the engine and made it handle a lot better.

Valleyrider 03-08-2010 09:00 PM

Starting to get stuff taken off. Getting ready to clean and paint...

http://farm5.static.flickr.com/4028/...d4991473_b.jpg

Looking at the head and cylinder, there is something different here.
Time to take a look...

http://farm5.static.flickr.com/4034/...0fd01ba7_b.jpg

Single ring piston...

http://farm3.static.flickr.com/2746/...7f87960c_b.jpg

Looking at the cylinder bore, there are marks on the cylinder wall,
but not normal seizure marks...?? A magnet confirms my hunch.
It's a chrome lined GYT cylinder and GYT head!!

http://farm3.static.flickr.com/2794/...3d713c6d_b.jpg

Valleyrider 03-08-2010 09:04 PM

Quote:

Originally Posted by bsbiker
Wow you are in for a lot of work! I remember back in the day the hot trick for those old DT1s was to cut the down tubes on the frame and put in a 2" spacer. It lowered the engine and made it handle a lot better.

Work.... HA... Yea your right!
I thought about lowering/adding to the frame, but I think I may wait on that at this point. Maybe in the future.

Valleyrider 03-08-2010 09:16 PM

Some degreasing and scrapping to get the heavy crap off the frame.

http://farm3.static.flickr.com/2782/...b02221cb_b.jpg

Simple Green won't even cut some of this stuff, and the pressure washer failed to get the heavy caked on guck.

http://farm3.static.flickr.com/2731/...3beeab95_b.jpg

Time to visit my local sandblaster...

http://farm3.static.flickr.com/2765/...201a50b9_b.jpg

And in keeping with my cheap@$$ motto for this project, I rattlecan it...

http://farm3.static.flickr.com/2721/...429f4425_b.jpg

Barebow 03-08-2010 09:23 PM

Go to YAMAHAENDURO.COM and you'll get all the info you could ever need. Great bunch of guys and a wealth of knowledge on the DT.

Valleyrider 03-08-2010 09:25 PM

Quote:

Originally Posted by Barebow
Go to YAMAHAENDURO.COM and you'll get all the info you could ever need. Great bunch of guys and a wealth of knowledge on the DT.

Thanks, went there and registered 2 weeks ago... bout time I got the bike/project.

Foot dragger 03-08-2010 09:33 PM

I rode a stock 72 DT-1 back in the day,ill handling would be a polite way to say it. Heavy ft end plowing tank slapping also come to mind.
I used it as a practice bike, when I jumped on my 200 Bultaco off the DT1 it was easy to go fast on the Bul. They do look neat now a days when their all shined up.

Valleyrider 03-08-2010 09:46 PM

Quote:

Originally Posted by Foot dragger
I rode a stock 72 DT-1 back in the day,ill handling would be a polite way to say it. Heavy ft end plowing tank slapping also come to mind.
I used it as a practice bike, when I jumped on my 200 Bultaco off the DT1 it was easy to go fast on the Bul. They do look neat now a days when their all shined up.

The '69 TS250 I rode was about.. no, worse than a DT1 in handling, weight, and power.
If you check my flickr link in my signature, the TS185 I rode gave the 200 Sherpas a bad time back then.. and it handled great!!
Hope to get the DT1 shining soon!

bk brkr baker 03-08-2010 10:01 PM

Whatever you do with the bike, its a good deed you're doing by saving it. But, before you get in too deep ,try to find a copy of Little Fauss and Big Halsy. Cool bike movie and you're Yamaha was one of the STARS.

Valleyrider 03-08-2010 10:18 PM

Quote:

Originally Posted by bk brkr baker
Whatever you do with the bike, its a good deed you're doing by saving it. But, before you get in too deep ,try to find a copy of Little Fauss and Big Halsy. Cool bike movie and you're Yamaha was one of the STARS.

If you remember that movie, you gotta be old..:lol3
It was a great promo for Yamaha. They had some roadracers in the movie as well.

vanrooster 03-08-2010 10:51 PM

That's a nice project you've got going there. :clap In regards to Little Fauss and Big Halsy, a quick Google video search finds the entire film available for free streaming. Quality's a little low, but the Johnny Cash song over the intro is awesome if nothing else... back to the bike, anyways :1drink


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