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I just read this in an atricle from the 39th Annual Dealernews International Powersports Dealer Expo here in Indianapolis from the past week.


Ever wonder what would replace mercury in traditional carb sticks? According to tool-masters Motion Pro, it's "secret sauce''--meaning they're not saying. But this non-mercury Sync Pro goes for $99.

www.amadirectlink.com/news/2007/Indy/MP_SyncPro.jpg

mariozappa wrote:

....Ever wonder what would replace mercury in traditional carb sticks? www.amadirectlink.com/news/2007/Indy/MP_SyncPro.jpg

Why, pray tell, would I want to use mercury in the first place? I feel that, even if it were safe to handle, mercury has so much more mass, that it can not be as responsive as a lighter fluid.
The one I built, for free using stuff from under the kitchen sink depends on a _very_ good damper scheme to regulate both flutter and large vacuum differences, like what may be present when first starting the procedure. Even though I am responding before using mine, I know that with total shut off at my damper point, then the laws of hydraulics/pneumatics won't allow the bar-oil/diesel mix in my tube to be sucked into the carb.
Go ahead, flame me. I can take it!

The Carbtune uses metal rods - no "secret sauce"- works great, costs about the same or less and came to me inside a week from the UK.

www.carbtune.com/

I'd rather not handle mercury.

JR wrote:

The Carbtune uses metal rods - no "secret sauce"- works great, costs about the same or less and came to me inside a week from the UK.

www.carbtune.com/

I'd rather not handle mercury.

You are right JR. That really does look like a good system, but a hundred bucks? Did I read correctly? A HUNDRED BUCKS for something I am going to use a lot that is one thing, but I don't know about a hundred bucks for this. I sort of like free, even if it is, by design, a bit fiddly.

Good stuff aint cheap

JimatMilkyWay wrote:

mariozappa wrote:

....Ever wonder what would replace mercury in traditional carb sticks? www.amadirectlink.com/news/2007/Indy/MP_SyncPro.jpg

Why, pray tell, would I want to use mercury in the first place? I feel that, even if it were safe to handle, mercury has so much more mass, that it can not be as responsive as a lighter fluid.
The one I built, for free using stuff from under the kitchen sink depends on a _very_ good damper scheme to regulate both flutter and large vacuum differences, like what may be present when first starting the procedure. Even though I am responding before using mine, I know that with total shut off at my damper point, then the laws of hydraulics/pneumatics won't allow the bar-oil/diesel mix in my tube to be sucked into the carb.
Go ahead, flame me. I can take it!

No flame, but I am puzzled about something.

It seems to me that you can't adjust the dampers without affecting the reading, so I don't see any advantage to them.

I think water with a dye added (for visibility) would work better because it is heavier than oil and diesel fuel.

Mercury works best because it's the heaviest.

how about just biting the bullet and buy some cheap vacuam gauges?