Yamaha Balancer Mod Tech Papers
Moderator: rztom
- jackson.40
- *****
- Posts: 2328
- Joined: Fri Dec 30, 2005 7:01 pm
- Location: Cambridge,UK
Yamaha Balancer Mod Tech Papers
I came across these the other day,not sure if these papers have been posted up on this site before .
[url=http://s19.photobucket.com/user/jackson ... x.jpg.html]
[url=http://s19.photobucket.com/user/jackson ... x.jpg.html]
Last edited by jackson.40 on Mon Jun 11, 2018 6:12 pm, edited 3 times in total.
Luther,Luther wrote:Left crank last pic keyway is out 180 degrees i'm pretty sure.
You are right. When I redid all that back in 02 I got that picture wrong. Man that thing has made the rounds. last I checked it was translated into like three different tongues.
Regards,
Bill Wilson
Wilson Performance
Lee's Summit, MO
Member RZ500 Owners Group #573
www.wilsonperformance.net
In the report it states that the 84 model was driven off the lower crank while the 85 was driven off the upper. Mine is an 85 1GE and it is driven off the lower????????
I questioned this mod back when I did my engine and elected not to do it after reading the pros and cons.
http://www.rzrd500.com/500phpBB3/viewto ... highlight=
Just my .02
Dave
I questioned this mod back when I did my engine and elected not to do it after reading the pros and cons.
http://www.rzrd500.com/500phpBB3/viewto ... highlight=
Just my .02
Dave
-
- - - - - -
- Posts: 22
- Joined: Sun Aug 13, 2006 9:00 pm
- Location: Austria / Hong Kong
first off glad to see Mr. Wilson back and I am convinced Yamaha never drove off the rear crank, a pic was posted not to long ago by Steve ( the professor) and it was the 86 model and even that showed the lower crank driving the balancer, I believe
we have 3 Steve's that qualify as professors, Smurph, Jackson 40 and RGV Steve, I am referring to Jackson 40.
we have 3 Steve's that qualify as professors, Smurph, Jackson 40 and RGV Steve, I am referring to Jackson 40.
Last edited by gus on Wed Mar 25, 2009 11:16 am, edited 2 times in total.
Ok, I've finally had the chance to pull the clutch cover off my engine to put the balancer back to standard and take some pictures.
First picture is the rear crank. When the mark is lined up to the case, #4 cylinder is at TDC - thats right.
Next pic is of the front crank.
The picture didn't come out well, so I had to edit it. If I line the dot on the gear up with the case, #2 is at TDC.. WRONG!
Now when you look closely at the dot on the gear, you can see that there is a cross through it (I have enhanced it in this pic). Someone has crossed it off, and on the other side of the pulley, there is a circle and a "D" shape.
When the circle is lined up with the mark on the case, #1 is at TDC - CORRECT!
So I've lined the balancer circle up with the circle on the front gear.
Anyone else seen this on their bikes?
It may have been these differences that caused the balancer mod to go wrong on my bike.
I will find out how the balance is now once I get some sealant to put the pipes back on and finish it off.
First picture is the rear crank. When the mark is lined up to the case, #4 cylinder is at TDC - thats right.
Next pic is of the front crank.
The picture didn't come out well, so I had to edit it. If I line the dot on the gear up with the case, #2 is at TDC.. WRONG!
Now when you look closely at the dot on the gear, you can see that there is a cross through it (I have enhanced it in this pic). Someone has crossed it off, and on the other side of the pulley, there is a circle and a "D" shape.
When the circle is lined up with the mark on the case, #1 is at TDC - CORRECT!
So I've lined the balancer circle up with the circle on the front gear.
Anyone else seen this on their bikes?
It may have been these differences that caused the balancer mod to go wrong on my bike.
I will find out how the balance is now once I get some sealant to put the pipes back on and finish it off.
Last edited by hybrid on Mon Jun 07, 2010 8:30 am, edited 1 time in total.