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Today I made it out for my annual Earth Day 2-stroke ride. Met a friend for breakfast in Newport Beach and then rode through Huntington Beach and Seal Beach. It was a little cool and foggy with some drizzle.

Stop for breakfast in Newport Harbor.


Overlooking Corona Del Mar State Beach


The little 50cc performed flawlessly on the 42 mile ride.

  congrats

bummer! Sorry to hear the news Tim, but like you said it's better to happen near home than on a trip in another state.

And a few seconds later, holy smokes, they moved Julians bike just left of center in a really cool spot. I was thrilled to see it out of the previous spot. Sent Julain a text right away.

After that excitement wore off and a few seconds more walking, holy smokes again, they moved the 500 front and center about 50 feet into the building. Yes, I was elated.

Looks like a great show. Thanks for sharing your photos and story.
Congrats on the revised placement! 

It's the shift cam stopper. (see parts 28-31)

A 2T boxer mower. That's cool!

From the Cycle News Archives (July 1974):
CN Archives: Katzenjammer! Yamaha's Moto-Bike

Looks like a lot of fun! Was the race well attended?

Also, what are your thoughts on the Liberty Media acquisition?

Seemed to be pretty good crowds this year, maybe slightly larger than the past few years.

Not sure the Liberty Media takeover is such a good thing but we'll see. They claim that they're not going to change things. I doubt that's the truth. I don't follow F1 but from news feeds I see it sure sounds like a media and political circus instead of a racing series.

In the Moto 3 race something happened that I don't remember ever seeing before. A racer trying to take somebody else's bike.

That was hilarious. Ortola thought he was still riding for Level Up, his team from last year.

BRING THE RACETRACK HOME
Enjoy the smell and sound of Yamaha's 2-Stroke engine from anywhere in your home, office or garage.

Announcing Yamaha's two-stroke white noise machine and aromatherapy diffuser

https://yamahamotorsports.com/yz25he


(too bad this product was posted April 1)

Wow that's a lot of ratchet straps! A unique and very useful gift.

.... do those have that plastic housing that runs up the side of the carb body? can't see it on the pic. they are NOTORIOUS for warping and leaking air.  would be on the opposite side of the cable wheel. there was a TTR225 i worked on years ago that had one that would leak like just enough to completely fuck the idle and transition circuit. IF i remember correctly, has an o-ring at either end and it screws to the side of the carb body.

Yes, it has the air cut-off valve on the side. The TTR225 and XT225 share a lot of parts including the carb. The cut-off cover was replaced with a brand new one because it had a crack in it. (The O-ring, diaphragm, and spring were reused.)


When I was installing it, I was thinking that it would be an easy spot to develop a leak because of the design. Who knows, maybe I got a cover that doesn't fit well?
I'm planning a trip to Sudco to get some Mikuni parts, so I'll just add that O-ring to the list.
And when I get the bike out to do my leak testing I'll check that cover too.

Happy Birthday Mark!    

 

[2001-07 Yamaha XT225, Mikuni BST34 specs -- stock:]

My carb is currently all stock with brand new genuine Mikuni jets. Below are the factory specs and what I've changed. Because these bikes are notorious for being on the lean side from the factory, it's a pretty common mod to increase the pilot one size. So, I'll be installing a #42.5 to see if that helps at all but I kind of doubt it. And on advice from another long time XT owner, the fuel screw has been changed from 2 turns out to 3, but no effect on performance or the idle issue.

2001-07 Yamaha XT225, Mikuni BST34 specs -- stock:
Main jet: #125
Pilot jet: #40  (to be increased to #42.5)
Pilot air jet 1: #70
Pilot screw: 2 turns out  (increased to 3 turns out)
Needle jet: 0-1
Needle: 5DL27-1
Valve seat: 2.0
Float level: 14.1-15.1 mm  (14.7mm)

A new diaphragm slide is on the way so I can see if that improves anything. I will be also be leak testing the rubber carb joint again to see if I can find any air leaks. Unlike the joints on RDs the XT part uses an O-ring between the cylinder, so I have one of those on order as well.

[1975 Yamaha rd 250]

Any other links on this that might be visible without facial book

I don't have FB either. Never will.
Even without an account that listing was visible to all while it was available and I did save it. I think it sold in less than 24hrs. Someone got a pretty good deal. In any case here ya go:

1975 Yamaha rd 250
$2,800
Salem, OR

Driven 3,290 miles
Manual transmission
Exterior color: White · Interior color:

Description
This bike is a survivor and was purchased from a private collection out of Ohio, it has an Oregon title in my name. It runs out strong and please view the pictures of the tank and the braces by the head light. From what I can tell the paint is original. Call or message me with any questions or to set up a time to look at it. If it's posted it's available.