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Where are you located in the world? Are you looking for new or used?
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need the cover and emblem for right side of gs500e
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General GS500 Discussion / Re: An awesome read for carb tuning
« Last post by mr72 on May 19, 2022, 01:15:07 PM »
Back to the original point, one thing (which we can't really do) that was brilliant in this post was about determining if it is rich or lean, which can be pretty tricky in transient conditions, is to turn off the petcock and if the problem gets worse, it was lean, and if it gets better, it was rich. That's worth the time to read that article right there.

I guess I just appreciate someone who is logical and takes time to explain how things work.
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General GS500 Discussion / Re: An awesome read for carb tuning
« Last post by herennow on May 19, 2022, 11:23:21 AM »

He is a long time contributor to Cycle World. He is a tottal engineering, aviation, and motorcycle nerd who writes a lot of slightly self indulgent articles that attempt to add romance to complex engineering concepts.
Mr72 is like our own personal store-brand version of Kevin Cameron. Maybe James Cameron too. They all give off similar vibes.
[/quote]

Thats all true but Irrelevant  :laugh:, what really makes him famous is all the two stroke Superbike racing he did in the 70's. He prepared some amazing bikes.
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Projects / Builds, Racing and Tech / Re: mr72's '92 project - "Renegade"
« Last post by mr72 on May 19, 2022, 06:58:55 AM »
Went out today and put another washer under the needle e-clip. It is now up to 3. These are #4 brass washers. I think 3 washers is probably just over one e-clip position if you had multi-position needles.

Also checked the mechanical operation of the choke, which seems to be working as expected. But it's not working to start the bike. Maybe the problem is using the manual petcock, the float bowls are not full enough on cold start.

 have oddball mods, so this is basically useless information. Things that affect jetting and needle position: chopped down Yoshimura muffler, header wrap, Uni drop-in air filter. I am running 40/125 jets and now three washers.

Test ride today confirmed that the third washer indeed fixed it. Well, let's say it moved the problem almost completely out of the way. Now there is the occasional hesitation when going from engine-braking deceleration to acceleration. But it's not all the time, and it is pretty easy to live with. Still, I think a fourth washer might eliminate that too. So next time I have the tank (mostly) off, I may add another washer.

Side note: it is surprisingly tricky to put the needle back into the slide with three washers.

There are still a litany of issues with this bike. The choke doesn't really work much. It doesn't do the fast-warmup thing when on choke. I think something inside the carb is clogged. Odd that it seems to affect both carbs. But I can confirm the plunger is functioning correctly. The new fork seals weep, one badly enough that I had to install a sort of sponge on it to keep it from leaking onto the brake caliper while parked. But no matter. It runs great, the manual petcock fixed 90% of what was wrong with it, it didn't go south over the winter, and it's ready to ride.
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General GS500 Discussion / Re: About jets
« Last post by Grimm on May 19, 2022, 12:13:18 AM »
We never use mph here. All bikes, cars has km/h indicators. Thats why i dont know about mph. I told you all what i see on my bikes indicator. I think nobody tampering with the indicator. Because i know history of bike. (Owner before me).
I will make a video soon ,upload youtube and share here the link.
Thanks you all again.
Ride safe. 🙏
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General GS500 Discussion / Re: About jets
« Last post by Grimm on May 19, 2022, 12:12:21 AM »
We never use mph here. All bikes, cars has km/h indicators. Thats why i dont know about mph. I told you all what i see on my bikes indicator. I think nobody tampering with the indicator. Because i know history of bike. (Owner before me).
I will make a video soon ,upload youtube and share here the link.
Thanks you all again.
Ride safe. 🙏
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General GS500 Discussion / Re: An awesome read for carb tuning
« Last post by The Buddha on May 18, 2022, 03:20:46 PM »
He's store brand of James Cameron !! Gotcha. A 3d GS500 hits an iceberg in its maiden voyage while carrying 5000 hollywood celebrities, and blue haired old ladies jump out and attack with harpoon guns then get on GS500 powered jetski's and Leonardo Di Caprio and fat chick cant fit on GS500 and he falls off and sinks.

Mr72, now make that movie, it will beat all the woke a$$ garbage out there. I'll pay $20 to see and even buy crappy popcorn wait a sec, the popcorn is the best part.

Cool.
Buddha.
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General GS500 Discussion / Re: An awesome read for carb tuning
« Last post by mr72 on May 18, 2022, 02:15:40 PM »
Store brand!! I love it!!

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General GS500 Discussion / Re: An awesome read for carb tuning
« Last post by Bluesmudge on May 18, 2022, 01:22:21 PM »
In my head, mr72 is Kevin Cameron

James Cameron ? Who is Kevin Cameron ??? No idea.
Cool.
Buddha.

He is a long time contributor to Cycle World. He is a tottal engineering, aviation, and motorcycle nerd who writes a lot of slightly self indulgent articles that attempt to add romance to complex engineering concepts.
Mr72 is like our own personal store-brand version of Kevin Cameron. Maybe James Cameron too. They all give off similar vibes.
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