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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> hand-numbing vibration /cgi-bin/YaBB.pl?num=1251129790 Message started by drums1 on 08/24/09 at 09:03:09 |
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Title: hand-numbing vibration Post by drums1 on 08/24/09 at 09:03:09 Ever since last summers head replacement fiasco, I've had a vibration. Figured it was normal for a 1-lunger. Not so much around town, but at 40mph and up it literally makes my throttle hand go numb. While cruising, when I pull clutch in and throttle off, it's smooth, but with clutch in and rev throttle to match cruising rpm, it vibrates. And I can feel it in the footpegs at highway speeds--almost feels like metal on metal, like a bad bearing. But only under load, when throttling. It really sucks stopping every 5 miles or so on a road trip, to regain feeling in my hand. Any idea's? I've checked motor mounts--seem ok. I just changed oil and spark plug--no difference. |
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Title: Re: hand-numbing vibration Post by Serowbot on 08/24/09 at 10:42:25 Just a possibility,... but check your front drive pulley... |
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Title: Re: hand-numbing vibration Post by matt on 08/24/09 at 10:45:22 For me, i noticed that i am in too low of a gear and/or i was giving the bars a death grip. When both are applied serious hand and feet vibs a coming my way. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 08/24/09 at 11:51:37 What all you had done to it? top end work? parts replaced? It's possible it could be one tooth out of time and still go. But the last guy to do so said poor performance. |
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Title: Re: hand-numbing vibration Post by mornhm on 08/24/09 at 12:13:31 In addition to what others have said, I would double check those motor mounts. Often engine vibrations are caused by the engine mounts being too loose, tight or cracked. Cracks in the frame are basically the same as cracks in the motor mounts. |
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Title: Re: hand-numbing vibration Post by serenity3743 on 08/24/09 at 12:56:06 797B667A7C79140 wrote:
One time I left the top motor mount off and got extra vibration like you're describing. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 08/24/09 at 14:28:20 392F382F24233E33797D7E794A0 wrote:
One time I left the top motor mount off and got extra vibration like you're describing.[/quote] Now that you mension it... I've been having an odd vibe on decel. Kinda hard like something hitting something. Had the tank off to do some work and noticed that the top mount bolts were loose. Was abit busy enjoying my "work" this morn. I'll have to pointedly check for the vibe. But I think it's gone now that the bolts are tight. ;D |
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Title: Re: hand-numbing vibration Post by justin_o_guy2 on 08/24/09 at 16:46:24 You wearing gloves? Padded? Are you holding it too tight? Odd its just that side thats going numb.. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 08/24/09 at 17:42:56 2C3335322F2819291921333F74460 wrote:
Throttle side is hard to let go. get one of those wrist rest thingys. But, confirmed, vibration is gone with top engine bracket torque down. |
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Title: Re: hand-numbing vibration Post by justin_o_guy2 on 08/24/09 at 21:05:57 I find myself gripping the throttle too tight sometimes. Using the glove to keep it gassed works, pretty well. Its hard to make myself release the throttle a bit, but with practice, the grip can be relaxed quite a bit. |
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Title: Re: hand-numbing vibration Post by drums1 on 08/25/09 at 10:45:48 I have a loose grip, and even looser once the hand starts going numb. No glove 'till winter time. Not sure why the throttle side is worse but it definately is. I'm gonna check the motor mounts again and the head bolts. The upper half was replaced last summer so maybe they didn't torque them properly. |
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Title: Re: hand-numbing vibration Post by JohnBoy on 08/25/09 at 19:58:01 My 2004 had bar end weights added, my replacement Harley bars did not. I made some on the cheap. two plastic cigar tubes and a cup of bird shot fill the tubes with shot, epoxy the end caps back on and wrap enough tape around the tube to give a nice fit in the bars. The loose shot helps to kill the vibration....night and day on mine! |
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Title: Re: hand-numbing vibration Post by drums1 on 08/26/09 at 08:30:40 I never heard of this one before, but I'll give it a shot.We have at least another month or 2 of riding left here in Wisconsin, and I'd hate to waste it because of a numb hand. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 08/26/09 at 08:57:28 We've never talked ergonomics, so... arms straight or bent? should be bent can you let go of the bars and not adjust your riding position 1 muscle? Weight on your hands will make them go numb in my experience. Also, do you have stock grips? I had a set of metal and rubber grips, 3 months later I trashed them. The metal transfers the vibes easily to your hands. And check out grip puppies. |
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Title: Re: hand-numbing vibration Post by Phelonius on 08/26/09 at 09:54:31 Just let go the bars and the vibration in the hands will stop. Phelonus |
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Title: Re: hand-numbing vibration Post by Stimpy on 08/27/09 at 21:35:45 maybe, just maaaybe your front wheel is busted (oval or needs balancing) maybe you hit a pothole or sidewalk too hard and its no longer perfectly round or maybe a few of your spokes are loose, just push bike to the left on it's sidestand till the front wheel spins freely, then visually inspect it; or just remove it and take it to a balancing center, good luck ...front forks need oil? engine brackets loose? there are about 6-7 of them, under engine, under battery box, under gas tank, etc |
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Title: Re: hand-numbing vibration Post by drums1 on 08/28/09 at 03:46:50 OE grips yes. It's not that. Definately in the motor. It's not the wheel either--rolls smooth at any speed. Rev engine in neutral or anytime I throttle it vibes. Engine mounts seem tight. I think it's something more internal, like a crank bearing or loose clutch assembly, or loose head bolts. |
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Title: Re: hand-numbing vibration Post by justin_o_guy2 on 08/28/09 at 06:59:28 Has anyone ever been inside that engine? I wonder if maybe they got the swinging counterbalance out of time. Wooden that suk? |
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Title: Re: hand-numbing vibration Post by drums1 on 08/30/09 at 12:18:24 Yes they have. The idiots that messed up the clutch last summer--it went to dealer--he found all the stuff idiots did wrong--no oil to engine for 60 miles--had upper 1/2 of motor replaced by the idiots--have had slight vibration ever since--has gotten much worse this summer--have put on about 2000 miles since I got it back end of last summer. I don't remember it vibrating this bad before all the clutch and everything was done. While at dealer--he replaced the timing chain tensioner adjuster with the new updated version. I doubt seriously if they would honor any kind of warranty now, as I was given nothing when I picked it up. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 08/30/09 at 12:23:43 4E585F47591B2A0 wrote:
Seems tight, or did you torque them? Cause the one I tighten seemed tight until I torqued it. |
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Title: Re: hand-numbing vibration Post by drums1 on 09/05/09 at 08:41:51 justin_o_guy2, tell me more about that swinging counterbalance thing. Location? Might it have been boogered when the clutch was done or when upper 1/2 of motor was replaced? |
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Title: Re: hand-numbing vibration Post by Routy on 09/05/09 at 09:38:05 Quote: Ever since last summers head replacement fiasco, I've had a vibration. Figured it was normal for a 1-lunger. ------------------------------------------------------------------- Hold it,.... If this didn't start till after the head work, how would you think it mite just be normal for a thumper ? I know, you're not on trial here, but just curious when the vibration really did start, as that could make a big difference. :o |
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Title: Re: hand-numbing vibration Post by drums1 on 09/05/09 at 10:54:51 It did vibrate some before the clutch and head work last year--normal vibe for this bike. When I got it back, it seemed a little worse, but I hadn't rode it in 3 months, so I thought maybe it was normal. This summer, it has slowly but steadily gotten worse, to the point where I cannot ride the highways without hand numbing vibration. In town, ( 30-35 mph ) seems ok, although I can feel it in the footpegs, almost like a bad wheel bearing on a car. Still seems to run ok, doesn't burn oil, just vibrates a lot. :-/ |
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Title: Re: hand-numbing vibration Post by Oldnewguy on 09/05/09 at 15:11:36 No oil to the engine for 60 miles could be a clue. Bearing? |
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Title: Re: hand-numbing vibration Post by sluggo on 09/05/09 at 15:52:22 hold the bars like your holding an unboiled egg. that or instead of holding thumb on bottom put it on top with the rest of the fingers. |
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Title: Re: hand-numbing vibration Post by Charon on 09/05/09 at 18:02:07 I have never tried it, but some have reported that filling the bars with birdshot will help. Use something like a winebottle cork in one end, lean the bike to that side, pour the handlebar full of birdshot, and cork the other end. Note that if you are one of the fanatics who want to eliminate every possible bit of "unnecessary" weight this might run contrary to your desires. |
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Title: Re: hand-numbing vibration Post by JustPassinThru on 09/14/09 at 22:46:09 This is my second thumper...the first being an SR500 Yamaha, twenty years ago. The same numbing vibration-caused tingling. FWIW, I find it's speed-related...had a bad case of it on a 50-mile speed run (had an appointment) today where I was ramming the Interstate at 80-82...wide open, top speed. Hands were buzzing for ten minutes afterward. Three hours of more reasonable cruising at 55-70, couple of hours later...no issue. |
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Title: Re: hand-numbing vibration Post by verslagen1 on 09/14/09 at 23:25:43 Bird shot in the bar is like a dead blow hammer. Rather than rebound, it goes thud, absorbing the blow. fill half to 3/4 full. |
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Title: Re: hand-numbing vibration Post by Max_Morley on 09/15/09 at 09:28:42 Why not find and fix the cause rather than cover it up. As I recollect they would not have been into the counter balancer area unless they pulled the engine and split the cases. Max |
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Title: Re: hand-numbing vibration Post by mornhm on 09/15/09 at 10:40:05 Trying to read what exactly has happened, it sounds like this has gotten worse over time. Have you adjusted the valves lately? Valve clearances out of spec can make an engine run like it's out of balance/ out of time or in other words it'll vibrate. Never did see where you have torqued the engine mounts, to be sure of the proper torque, they should be loosened, and then tightened to spec. |
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Title: Re: hand-numbing vibration Post by Oldnewguy on 09/15/09 at 11:18:48 I still think that running it 60 miles with no oil has done some damage! |
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Title: Re: hand-numbing vibration Post by Max_Morley on 09/15/09 at 19:27:42 3 on the head stay under the tank, 2 on the lower front and 2 in the lower back of the engine all need to be torqued correctly. They would have loosened and removed the 3 upper one and 2 front ones to do the work you had done. Max |
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