Vintage Project - Yamaha DS7 - 250

Our rides evolve - keep track of yours here.
User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Vintage Project - Yamaha DS7 - 250

Post by extrememarine » Wed Jan 24, 2018 10:31 pm

Vintage Yamaha Project…

Image

So another journey begins. This bike landed in my garage mid 2017. There are a couple connections here that make this more than just another project for me. I’ve shared a couple pictures here and there of this, but I figured I’d get a build thread going to keep track of the project.

Official “Before” picture.

Image

Image


Background. This bike belonged to the father of one of my very good childhood friend. Shawn’s dad, Ray, purchased this bike to use a farm runabout. The story goes that it stopped running one day – sometime in 1976 based on the license plate on it. Ray tinkered with it a bit, then parked it. It has been bounced around in the family the past 40 years, landing eventually in the tool shed on the family farm property that Shawn built his current home on. Ray passed away last year.

Shawn and I had talked about the bike a couple of times, and eventually it ended up on my trailer and in the garage here. It’s a 1972 Yamaha RD250. It has 3614 miles on it. So on top of the sentimental value, it’s my ‘birthday’ bike – it was born the same year as me – 1972. So there you go – birthday bike, that happens to be a Yamaha, that I know (or knew) the owner.

Winter set in here in Michigan and focus turns to projects like this. The bike is amazing complete and unmolested. There is rust. There is dust and dirt, as well as some rot. With a battery booster pack connected, the lights work. The tires hold air for about 10 days before going flat. The switches all seem to work, the motor will turn over with the kicker and the transmission will cycle through the gears up and down.

Image

Image


My first goal is to see if it will fire and run. The motor internals look pretty good – there’s fairly clean oil in the gear case, the oil tank was half full of oil. I’ll order some parts and see where it goes.

Current progress.

Box of parts from EconomyCycle.com arrived with new points, condensers, coils, hose. A battery and spark plugs from Amazon and a throttle / oil pump cable assembly from Ebay. The carbs have been off and gone through a cleaning cycle in an ultrasonic cleaning tank.

I put the carbs back on and have the gas tank filled with vinegar to clean the rust out of it. Curiosity got the best of me the other night. I checked spark in each cylinder and the tester lit up when connected to each spark plug. I grabbed a can of starter fluid and gave it a puff of go juice down each carb with the throttle opened up. Switches on and kicked it over.

It coughed and burned the ether. Holy Shit! Repeated it and same result. I know not to do this anymore without some pre-mixed fuel in it (it is a 2 stroke). I realize this does not guarantee by any means that it will be a runner, but it sure does provide the motivation to press on with it…

Image

More to follow…
fontanaman, PhilJet09, Madmudder and 4 others loved this
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

Festus
Veteran
Posts: 653
Joined: Tue Mar 28, 2017 3:40 pm
FJRModel: 2013 - Eleanor (bite me, gixxerjasen)
x 399
x 1010

Re: Vintage Project - RD250

Post by Festus » Wed Jan 24, 2018 10:41 pm

Great project! Can’t wait to follow this one. Good luck!
extrememarine loved this

User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Re: Vintage Project - RD250

Post by extrememarine » Wed Jan 24, 2018 11:15 pm

January 24th, 2018 – update 2 – more progress pictures.

Seat, tank, airbox, battery box, rear fender removed.
Image

Rear fender clean up.
Image

Gas tank clean up. The tank had some rust inside it; most was pretty light. I let it soak with 2 gallons of plain vinegar in it for 2 days. Then rinsed the tank out with a baking soda mix to neutralize the vinegar. Here’s what it looks like now.

Image
PhilJet09 and wheatonFJR loved this
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

BkerChuck
Veteran
Posts: 843
Joined: Mon Oct 31, 2016 7:02 am
FJRModel: 2007 FJR1300
x 510
x 833

Re: Vintage Project - RD250

Post by BkerChuck » Thu Jan 25, 2018 8:05 am

Inside of that tank is impressive. Amazing it wasn't far worse than that after sitting all those years. Vintage stuff can be a lot of fun to tinker with. Best of luck o the project!
ImageImageImage

IBA #50866

User avatar
raYzerman
Contributor
Veteran
Posts: 3427
Joined: Mon Mar 18, 2013 10:49 am
FJRModel: 2014 A Root Beer, 2009 CBF1000A
Location: Millgrove, Ontario, CA
x 842
x 2150

Re: Vintage Project - RD250

Post by raYzerman » Thu Jan 25, 2018 8:27 am

Coupla nights work, she'll shine right up like new!!
Keep yer stick on the ice........... (Red Green)
Duct tape can't fix stupid, but it can sure muffle the sound.

User avatar
blrfjr
Veteran
Posts: 602
Joined: Sun Jan 20, 2013 1:48 am
FJRModel: 2016 Honda Africa Twin
Location: Frankfort, In
x 22
x 80

Re: Vintage Project - RD250

Post by blrfjr » Thu Jan 25, 2018 8:34 am

My best friend's dad has an old honda dream 305 in his shed. It needs restored but is all there. Including the factory hard bags and windshield. If i ever get time for a project I'll be asking him about it. Looks like a fun thing to do.
Btw Wayne my friend Dennis (you met him at fods)is an awesome painter dude!

Sent from my SAMSUNG-SM-G870A using Tapatalk

Lifes to short, lets go for a ride!

Bryan

User avatar
Viper_Dad
Member
Posts: 159
Joined: Fri Jan 19, 2018 4:35 pm
FJRModel: 2013
Location: Virginia, USA
x 180
x 197

Re: Vintage Project - RD250

Post by Viper_Dad » Thu Jan 25, 2018 10:05 am

This is turning out to be a great story! I'm glad you started a build thread so we can follow along with your progress.
2013 - "Jolene"
Peter

User avatar
Uncle Hud
Veteran
Posts: 2353
Joined: Thu Dec 08, 2016 1:52 pm
FJRModel: 2015 ES, scratched and gouged
Location: Smyrna, metro Atlanta
x 2901
x 1122

Re: Vintage Project - RD250

Post by Uncle Hud » Thu Jan 25, 2018 10:48 am

Wow! My first bike was an RD400, so I can tell you the two-stroke RD engines are tough as nails. They also propel you and your machine to Mach 1 in about 30 seconds.

Will be following this with great interest!
_________________ You can't get into trouble in second gear. _________________

User avatar
FJRfarrier
Contributor
Veteran
Posts: 426
Joined: Thu Apr 03, 2014 1:57 pm
FJRModel: 2012
Location: NW Ohio
x 631
x 811

Re: Vintage Project - RD250

Post by FJRfarrier » Thu Jan 25, 2018 9:41 pm

extrememarine wrote:
Wed Jan 24, 2018 10:31 pm
It’s a 1972 Yamaha RD250. It has 3614 miles on it. So on top of the sentimental value, it’s my ‘birthday’ bike – it was born the same year as me – 1972. So there you go – birthday bike, that happens to be a Yamaha, that I know (or knew) the owner.
Dang. That's an old bike. :stickpoke: ;) :P :lol:
BikerGeek loved this
I haven’t made any really bad decisions lately... I’m getting bored.

IBA #60909

User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Re: Vintage Project - RD250

Post by extrememarine » Thu Jan 25, 2018 9:53 pm

Thanks for following along and the encouragement.

"Honey, why do I smell gas in the laundry room?"

Got ahead of myself tonight. Assembled gas tank and ran fuel lines. dumped a gallon of mixed gas in the tank. 40 year old gaskets do not re-seal once they've been cracked open. Petcock looked like a lawn sprinkler. Red-neck speedy-dry deployed (cat littler) and tank draining in bucket out back.

Petcock gaskets ordered...
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Re: Vintage Project - RD250

Post by extrememarine » Thu Jan 25, 2018 9:54 pm

Captain Obvious is in the room...
FJRfarrier wrote:
Thu Jan 25, 2018 9:41 pm
extrememarine wrote:
Wed Jan 24, 2018 10:31 pm
It’s a 1972 Yamaha RD250. It has 3614 miles on it. So on top of the sentimental value, it’s my ‘birthday’ bike – it was born the same year as me – 1972. So there you go – birthday bike, that happens to be a Yamaha, that I know (or knew) the owner.
Dang. That's an old bike. :stickpoke: ;) :P :lol:
FJRfarrier loved this
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

User avatar
wheatonFJR
Contributor
I post more than I ride
Posts: 9842
Joined: Wed Jan 16, 2013 6:10 pm
FJRModel: 2013 -"Lucky13" -motoman break-in by jwilly...
Location: Travelers Rest, SC
x 11079
x 5411

Re: Vintage Project - RD250

Post by wheatonFJR » Thu Jan 25, 2018 9:54 pm

FJRfarrier wrote:
Thu Jan 25, 2018 9:41 pm
extrememarine wrote:
Wed Jan 24, 2018 10:31 pm
It’s a 1972 Yamaha RD250. It has 3614 miles on it. So on top of the sentimental value, it’s my ‘birthday’ bike – it was born the same year as me – 1972. So there you go – birthday bike, that happens to be a Yamaha, that I know (or knew) the owner.
Dang. That's an old bike. :stickpoke: ;) :P :lol:

Says the young pup. :stickpoke:
:lol:
FJRfarrier loved this
Hoping to save the world, one post at a time...

User avatar
FJRfarrier
Contributor
Veteran
Posts: 426
Joined: Thu Apr 03, 2014 1:57 pm
FJRModel: 2012
Location: NW Ohio
x 631
x 811

Re: Vintage Project - RD250

Post by FJRfarrier » Thu Jan 25, 2018 10:04 pm

Image
BkerChuck loved this
I haven’t made any really bad decisions lately... I’m getting bored.

IBA #60909

User avatar
Uncle Hud
Veteran
Posts: 2353
Joined: Thu Dec 08, 2016 1:52 pm
FJRModel: 2015 ES, scratched and gouged
Location: Smyrna, metro Atlanta
x 2901
x 1122

Re: Vintage Project - RD250

Post by Uncle Hud » Fri Jan 26, 2018 10:51 am

extrememarine wrote:
Thu Jan 25, 2018 9:53 pm
<snip> Petcock gaskets ordered...
Ancient history! You can tell an antique bike because it has an honest-to-goodness RESERVE gas tank.
_________________ You can't get into trouble in second gear. _________________

User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Re: RE: Re: Vintage Project - RD250

Post by extrememarine » Fri Jan 26, 2018 11:02 am

Uncle Hud wrote:
extrememarine wrote:
Thu Jan 25, 2018 9:53 pm
<snip> Petcock gaskets ordered...
Ancient history! You can tell an antique bike because it has an honest-to-goodness RESERVE gas tank.
Even older, this is a non vacuum petcock, so it has "on", "reserve", AND "off" !

Sent from my SM-G930P using Tapatalk

Uncle Hud loved this
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

BkerChuck
Veteran
Posts: 843
Joined: Mon Oct 31, 2016 7:02 am
FJRModel: 2007 FJR1300
x 510
x 833

Re: Vintage Project - RD250

Post by BkerChuck » Fri Jan 26, 2018 11:08 am

One must keep in mind, Julie's dad probably wasn't driving yet when this bike was built. She is a youngster among us! :lol:
ImageImageImage

IBA #50866

User avatar
wheatonFJR
Contributor
I post more than I ride
Posts: 9842
Joined: Wed Jan 16, 2013 6:10 pm
FJRModel: 2013 -"Lucky13" -motoman break-in by jwilly...
Location: Travelers Rest, SC
x 11079
x 5411

Re: RE: Re: Vintage Project - RD250

Post by wheatonFJR » Fri Jan 26, 2018 11:29 am

extrememarine wrote:
Fri Jan 26, 2018 11:02 am
Uncle Hud wrote:
extrememarine wrote:
Thu Jan 25, 2018 9:53 pm
<snip> Petcock gaskets ordered...
Ancient history! You can tell an antique bike because it has an honest-to-goodness RESERVE gas tank.
Even older, this is a non vacuum petcock, so it has "on", "reserve", AND "off" !

Sent from my SM-G930P using Tapatalk
Is there any other kind? I always hated to walk out to the garage when the petcock hadn't been turned off after the last ride. I also hated to have to turn the petcock to reserve when the CB550 coughed and quit at a 4 way stop...but I guess it's better than having it on reserve the whole time!

I also had to explain to my 17 year old GF in 1977 what a petcock was.
Madmudder, Bust, and Uncle Hud loved this
Hoping to save the world, one post at a time...

User avatar
extrememarine
HMFIC
Veteran
Posts: 3498
Joined: Sun Jan 13, 2013 12:17 pm
FJRModel: 2009 FJR
Location: SE Michigan
x 257
x 2342

Re: RE: Re: Vintage Project - RD250

Post by extrememarine » Fri Jan 26, 2018 10:53 pm

DRZ has a vacuum petcock - has "on", "reserve", and "prime" - prime bypasses the vacuum shut off.

It's especially great when you set out taking back roads to techday with half a tank of fuel, planning to fill up when you hit reserve. Fast forward to middle of nowhere farm country and bike coughs and stalls; reach down, roll petcock to what should be reserve and nothing happens as you coast to a stop. Further investigation reveals that the last time you filled up, you didn't roll the petcock off reserve. Pushed that thing just a little over a mile to the gas station...
wheatonFJR wrote:
Fri Jan 26, 2018 11:29 am
Is there any other kind? I always hated to walk out to the garage when the petcock hadn't been turned off after the last ride. I also hated to have to turn the petcock to reserve when the CB550 coughed and quit at a 4 way stop...but I guess it's better than having it on reserve the whole time!

I also had to explain to my 17 year old GF in 1977 what a petcock was.
Cav47 loved this
Ride There!
-Wayne aka asphalt surfer...

IBA#60836

#Peteyismyhero

User avatar
John d
Veteran
Posts: 360
Joined: Sat Jan 19, 2013 1:01 pm
FJRModel: 2008A
Location: Normandale ON
x 341
x 220

Re: Vintage Project - RD250

Post by John d » Sat Jan 27, 2018 1:46 am

Back in the day we would back up into the ditch to fill the float bowls. Sometimes leaning the bike to the reserve side got where you needed to go.

User avatar
Bust
Veteran
Posts: 1684
Joined: Sat Jan 19, 2013 12:08 am
FJRModel: 68' Schwinn Stingray
Location: Owosso Mi
x 2390
x 423
Contact:

Re: Vintage Project - RD250

Post by Bust » Sat Jan 27, 2018 12:05 pm

Wayne I found this link that may be helpful with this project. :mrgreen: In fact, I think everyone here could learn a few things from it.

fontanaman, John d, and wheatonFJR loved this
You ever see a grown man naked Billy?

Post Reply