Recent Posts

1

General Two Stroke Talk / Draining carbs

« Last post by msambuco on January 31, 2023, 04:34:42 PM »

I don't know if this will be seen by anyone as the site seems quiet but I'll post anyway. We have a toyhauler camper and always drain the gas from the bikes by laying them over on both sides so no gas drips smell up the garage area. This also keeps the ethanol from f&*king up the carbs. Or so I thought. Out bikes sat for a few years and while I got both YZ 250's running good the YZ 125 was messed up. Long story short is rather than melt the piston by running too lean I replaced the carb. Fixed it. This was last season.

Get to our first ride this year and all is good. But decide to add extra measure of starting the bikes after draining to make sure carb is dry. The 250's pop off a few RPM's on the fumes left. Empty. But the 125 idled for a few minutes. So that must be why it got messed up. There was still gas somewhere in it.

Point of my post is to recommend drain and start to make sure all the evil ethanol is out of your carb for storage. I live in FL and have a place I can pull camper into to fill up with 90 octane ethanol free so we are running that now. But will still drain and start to keep carbs clean.

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General Two Stroke Talk / Re: I'm a damn liar

« Last post by msambuco on May 16, 2022, 05:11:15 PM »

So after riding at Durhamtown It is apparent I am feeling my age. Turned 59 and it is harder to keep the 125 in the powerband by feathering the clutch. So against my opposition to a big bore kit I am seriously thinking about doing that. Want to stay on the light weight 125 but could use a little more bottom end power for my riding ability which is slipping. Thinking about sending whole engine to Eric Gorr and then back into bike. Thoughts??

Glad to still be able to fly through the woods at my ripe old age!

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General Two Stroke Talk / I'm a damn liar

« Last post by msambuco on April 26, 2022, 06:24:12 PM »

But not intentional. I posted about a 125 build that never happened. Life and work got in the way.

But, as life would have it we now have 2 250's and a 125 that run great. Many bike bucks and effort spent correcting the ills of sitting so many years. My boys both have the 250's. I am in the 125. 59 tomorrow. And I can still hold the throttle open and feather the clutch. Arriving at Durhamtown GA tomorrow for 4 days of riding. The 250's are 2013 and 2015 Yamahas. Both stock basically.

The 2012 125 Yamaha is now my personal ride. It has Boysen reeds and cage, pro circuit pipe and silencer, but is otherwise stock. Had to replace the carb! F**k ethanol! Replaced fenders, outer clutch cover, flywheel cover, etc> Needs to look nice. New Pro circuit pipe on order to replace the one my kid lumped up.

Any ideas on true performance upgrades would be appreciated. 125 is now a started ongoing upgrade project. Price is no object but only if there is a performance gain. Going to concentrate on suspension settings as that is where most bikes suffer.

Anyway no longer a filthy damn liar. Project underway!

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General Two Stroke Talk / 2STROKE STUFFING

« Last post by DESERTFOX19 on February 12, 2022, 06:57:03 PM »

https://www.youtube.com/channel/UCHRXYmO1vdp-Bi1-w11R7WQ

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General Two Stroke Talk / Re: Rotary Valve EFI 360.

« Last post by Flettner on September 26, 2021, 11:07:14 PM »

https://youtu.be/sO-3ukNQW04

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General Two Stroke Talk / Triumph To Develop Motocross Motorcycle: Ricky Carmichael Recruited

« Last post by DESERTFOX19 on August 20, 2021, 11:38:56 AM »

https://ultimatemotorcycling.com/2021/07/22/triumph-motocross-ricky-carmichael/


 Be nice if they would make a two stroke.

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General Two Stroke Talk / Re: Rotary Valve EFI 360.

« Last post by Flettner on July 10, 2021, 01:32:18 AM »

running it around the yard now, crisp throttle response.

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General Two Stroke Talk / Re: Rotary Valve EFI 360.

« Last post by rsmith on July 01, 2021, 02:54:58 PM »

"Life gets in the way,"


Oh doesn't it! Thanks for posting!

--Ron.

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General Two Stroke Talk / Re: Rotary Valve EFI 360.

« Last post by Flettner on March 15, 2021, 03:56:42 PM »

Life gets in the way, sorry the video upside down, but here running at last. Only on the water brake dyno at the moment. You can see the sliding Gibs throttle at work. They overlay the rotary disc valve, Its just running two of the four TPI injectors at the moment, i.e. standard TPI. At some point when I learn more about this ecu Ill start blending in the A port injectors. They will come on as the pipe starts working. Autolube is connected to the power valve so only opens as the power valve does, on load. Oil is feed direct through to the bigend. I am running 80 to one pre mix as well in the E85 fuel.
https://youtu.be/977BWjCMC8E
https://youtu.be/bhKrRlZxomc

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Vintage Two Strokes / The _X_ Blog

« Last post by _X_ on November 13, 2020, 01:24:52 PM »

The _X_ Blog
Well, it went as soon as it came. The season was meant to culminate with a trip up the road to the track I hate to love, central village cycle club, but that didn't happen due to rain fall the two days prior. Although the club still held OP, I am too far along this motocourse to have anything to do with that crap. Its time to do my winter thing, music and training. I will be refreshing the old girls for what next season brings and will provide updates on the progress. It was for what it was, a good season. I just hope next season is as it should be.
_X_