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jwawhite
RS Fahrer
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Haven't found this topic under Search so,
I have some Mercury Sticks at this time, there should be no problem with balancing injectors, right? Just not as accurate (?) that's fine for now until I get/borrow a Twin Max.
Who has used Mercury Sticks and the results?
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John R1150RS
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Total Posts: 63 | Joined Aug. 2002 | Posted on: 1:12 pm on May 24, 2004 | IP
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beemerich
RS Fan
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Hi there,
Unfortunately I haven't any experience with mercury sticks, but there are some comments here
http://www.employees.org/~tw/rrs/ib219/cgi-bin//topic.cgi?forum=1&topic=629
which might be useful.
I suspect that while the mercury option may not be the best (as much to do with the health risks as anything else) as far as the motor is concerned anything is better than nothing!
Good luck and have fun(!)
Rich
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'02 RS plus 2002tii, 3.0Si, 3.0S, the list goes on. Me, too far gone to help...
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Total Posts: 34 | Joined Nov. 2003 | Posted on: 1:57 pm on May 24, 2004 | IP
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baddean
RS Fahrer
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Hey John,
I have used mercury sticks on various bikes for a number of years with excellent results. Just remember to be meticulous and double and triple check your readings. Unless this is a highly tuned engine that only operates well in a narrow power band the mercury sticks will be close enough.
As for a health risk, you should be tuning your carb/injectors, not drinking the stuff. Don't turn the mercury sticks upside down or lay them on their side, EVER. The mercury will leak out. As long as the mercury stays inside of the stick it is not a risk. If a little ball of mercury does get out immediately call for a federal haz-mat team to come with trucks, helicopters, bulldozers and men in space suits. Your neighbors will love you for it. Especially the kids.
Good luck, and let us know how it goes,
Dean
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DeanO
'94 R1100RS, '96 Ducati 916
Cincinnati, Ohio
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Total Posts: 87 | Joined Oct. 2002 | Posted on: 3:28 pm on May 24, 2004 | IP
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acasa520
RS Fan
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i have always used mercury sticks to do my throttle syncs. i believe that the mercury sticks are the most accurate way to do this. i don't know exactly how a twinmax works, but i understand it is some sort of differential pressure sensing insturment that displays results electronically. to me that says that something could fail or not be working 100%. however, with mercury sticks you are looking at two columns of mecury pulled from the same pool of mercury. there is no chance that one column will repsond to pressure (or vacuum) differently than the other. reading pressure with a column of liquid is the most pure and basic way to measure pressure. there is no electronic (or any other) signal processing to potentially go wrong. the method is so basic it is nearly foolproof. yes, it is true that you do have to be careful not to spill the mercury, but i don't see this as a difficult thing to control.
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Total Posts: 21 | Joined Jan. 2004 | Posted on: 11:05 am on May 25, 2004 | IP
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jimstinnett
RS Neophyte
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Well I use both.
I get the basic low RPM set by using the Motion Pro brand stix, then hook up the Twinmax to synch the higher RPM ranges. I guess this sounds excessive but hell, it's fun!
I started using this method on my VTR ( a big twin with carbs) and I seemded to get good results, so when I got the RS I thought I would give it a try on it. It works well.
The best thing about the Twinmax though is that you can bungee it to the tank and do an "on road" version of a throttle synch, and people who see you riding around with all those hoses and stuff think you're a geek.
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Jim Stinnett
'94 R1100RS, '98 VTR1000
http://moto-rama.com
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Total Posts: 10 | Joined Sep. 2003 | Posted on: 3:37 pm on May 25, 2004 | IP
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itsian
RS Fan
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Hi
I saw a design using one 12foot length of 1/4 inch clear pvc tube filled with dark oil and made one,never looked back!!!
I hang it from my garage roof like a giamt 'M'with the middle two feet holding the oil. and just plug the ends in as needed.I think this is more sensitive as the density of oil is lower than mercury.As the bike is tuned the oil is pulled one way or the other until a ballance is obtained
Its never given me any trouble.Make sure there are no air bubbles in the oil.My one took a little while to clear when I first made it.This will allow you to easily adjust the throttle cables and the big brass screw setup.
Good Luck
Ian
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Total Posts: 44 | Joined Aug. 2003 | Posted on: 12:36 am on May 26, 2004 | IP
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BMW R1150RS and R1100RS
Injector Balancing
