Whitlow Posted September 28, 2009 Share #1 Posted September 28, 2009 So I noticed today that when in a right hand turn at around 55 mph I got a slight wobble but not in a left hand turn. Any remakes on this? Thanks Link to comment Share on other sites More sharing options...
Squidley Posted September 28, 2009 Share #2 Posted September 28, 2009 What is the air pressure in your front forks set at? There is a filler schrader for each side and should be no more than 7 psi. Link to comment Share on other sites More sharing options...
Freebird Posted September 28, 2009 Share #3 Posted September 28, 2009 Yes, and it is hard to get them equal unless you have a progressive pump with the 0 loss chuck. You might put them both at 0 then you'll know they are equal. Also, check for cupping on one side of the tire but not the other. Link to comment Share on other sites More sharing options...
Whitlow Posted September 28, 2009 Author Share #4 Posted September 28, 2009 I checked the tires they look good and I have no idea about the psi in the shocks. Is that the cause of this in most cases? Link to comment Share on other sites More sharing options...
Squidley Posted September 28, 2009 Share #5 Posted September 28, 2009 I checked the tires they look good and I have no idea about the psi in the shocks. Is that the cause of this in most cases? It can be, just ask Black Owl about going into a curve with a bad fork seal Seriously though, it will absolutely affect the handling of the bike if they are not the same. I usually kept my front shocks at about 5 psi and the rear at about 35 psi. Make sure the tires are properly inflated, you would be amazed at just a few simple things will make the bike respond well. The zero loss hand air pump is a must for all G2 owners. NEVER try to fill the front forks with an air compressor, always with a hand pump http://www.onestopmoto.com/product_p/gp-ns-00.htm Link to comment Share on other sites More sharing options...
frogmaster Posted September 28, 2009 Share #6 Posted September 28, 2009 (edited) Steering Head Bearing tight? YES zero in both is equal and many of us run zero PSI in front shock, me included Edited September 28, 2009 by frogmaster spelling Link to comment Share on other sites More sharing options...
V7Goose Posted September 29, 2009 Share #7 Posted September 29, 2009 There are lots of possible issues that will cause that problem. One easy item to check is the forks, as other have said. Just let all the air out of both. In over 90,000 miles I have noted that both my RSVs have been very sensitive to proper tire pressure. BOTH over inflation AND under inflation can cause this problem. Although each tire combination is different, generally I find that 48 lbs is max acceptable pressure on the 80H rear tires that have a max pressure of 50 lbs. For the 74H tires with max pressure of 40 lbs, keep them at 40. Front tires should generally be about 36 lbs. I must admit that I do not check my tire pressure as often as I really should. After letting the bike sit for about 3 weeks while I was off doing other things, I noted several times that it seemed to wallow a bit in long sweepers, and slow speed handling was a bit heavy. Before taking off on a long weekend run I checked the tires - both front and rear were about 5 lbs low. After putting them back where I normally keep them, all handling issues were back to normal. After the simple issues of fork pressure and tire pressure, then tire wear is the next primary culprit. Worn front tires that are no longer shaped with a smoothly rounded profile often cause this problem. Worn square profile rear tires with a flat center cause really nasty handling issues, but not often a head shake. Finally, steering head bearings and swing arm bearings are the other major things to check. Goose Link to comment Share on other sites More sharing options...
SilvrT Posted September 29, 2009 Share #8 Posted September 29, 2009 I don't know about "wobble" but mine sure seems to have some kind of "flexing" going on when I take a corner fairly "hot" and there's some bumps or dipping in the road. Gets a little unnerving to say the least. Link to comment Share on other sites More sharing options...
Yammer Dan Posted September 29, 2009 Share #9 Posted September 29, 2009 I don't know about "wobble" but mine sure seems to have some kind of "flexing" going on when I take a corner fairly "hot" and there's some bumps or dipping in the road. Gets a little unnerving to say the least. Checked steering head. That sounds like it could be tire too. How is it wearing?? Link to comment Share on other sites More sharing options...
SilvrT Posted September 29, 2009 Share #10 Posted September 29, 2009 Checked steering head. That sounds like it could be tire too. How is it wearing?? dunno... haven't tried it on yet but I think the waist is a bit too big for me... Actually, it was showing signs of cupping and when I talked to the dealer's mechanic he suggested putting 2 more lbs of air above factory spec. Interestingly enuf, the front is wearing faster than the rear. (these are the stock tires). I've got appx 18,000 kilometers on them and the front is almost worn out. The rear looks pretty good still. I'll be checking the steering head this winter. I only have 2 more weeks of insurance left so ain't gonna worry about it until after then. Link to comment Share on other sites More sharing options...
camos Posted September 29, 2009 Share #11 Posted September 29, 2009 Isn't cupping caused by an out of balance wheel? Link to comment Share on other sites More sharing options...
SilvrT Posted September 29, 2009 Share #12 Posted September 29, 2009 Isn't cupping caused by an out of balance wheel? Not necessarilly .. low air pressure will also. Link to comment Share on other sites More sharing options...
camos Posted September 29, 2009 Share #13 Posted September 29, 2009 I googled tire cupping and found a variety of responses, mostly relating to tire pressure but also found this comprehensive explanation which also mostly blames tire air pressure. http://w6rec.com/duane/bmw/cupping/index.htm Link to comment Share on other sites More sharing options...
Whitlow Posted September 29, 2009 Author Share #14 Posted September 29, 2009 Thanks you all for some GREAT post I will check tire pressure and psi n forks. I'll let you know what I find and results. Link to comment Share on other sites More sharing options...
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