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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Reduce Vibration at highway speeds /cgi-bin/YaBB.pl?num=1534182176 Message started by mtstorm on 08/13/18 at 10:42:56 |
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Title: Reduce Vibration at highway speeds Post by mtstorm on 08/13/18 at 10:42:56 I couldn't find a thread on this topic, so if there is one feel free to point me there. How can I reduce vibration when traveling at 75-80 mph? After 5+ miles I feel like Jell-O and after 20 miles I can barely walk. I switched to iso grips with end weights, which helps with my hands. But my floorboards and seat make me feel like I'm getting a rigerous power massage. :-/ I don't do a lot of highway riding but it would be nice to pop on the interstate to get to nearby towns occasionally. I'm 125 lbs, so not much to weight it down. Thanks! |
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Title: Re: Reduce Vibration at highway speeds Post by hotrod on 08/13/18 at 10:52:08 Check your engine to frame mounting bolts. Use a torque wrench. I think some have to be 60 ft. lbs. ( I think ) Large boots with gel insoles also help. |
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Title: Re: Reduce Vibration at highway speeds Post by Dave on 08/13/18 at 10:55:52 Kawasaki front pulley to reduce engine rpm.....150/90-15 rear tire for the same reason. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1490012095 If the bolts on the top motor mount above the head are loose - that has been reported to make for excess vibration. |
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Title: Re: Reduce Vibration at highway speeds Post by justin_o_guy2 on 08/13/18 at 11:27:07 Kawasaki front pulley to reduce engine rpm.. Little town nearby has a radar/speed you're going thing. With the front pulley swap, and a Metzler on, it's got the speedometer calibrated, and it is more relaxed. |
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Title: Re: Reduce Vibration at highway speeds Post by GOF on 08/13/18 at 11:36:43 42797463727E656378707D62110 wrote:
I was wondering if the 150/90 15 would fit. Any clearance issues? |
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Title: Re: Reduce Vibration at highway speeds Post by justin_o_guy2 on 08/13/18 at 11:56:04 Depends on who made it. Dunlop fits, but Metzler is so meaty that the stock size fills up the fender. You Might get a size taller in it, but the bolts would have to be changed, and that might not be enough. I'd hate to own a $100.00ish tire I couldn't use.. But I have 5,000 miles on the metzler and it's not even almost squared off. No other tire has made 5k and not been looking like it was time to start thinking about when to get a new one. |
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Title: Re: Reduce Vibration at highway speeds Post by Dave on 08/13/18 at 13:39:34 The problem I have with the 150/90....is the tire is incredibly heavy. All that rotating weight slows the bike down - in acceleration, braking and turning, and it also adds unsprung weight that affects handling in a negative way. |
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Title: Re: Reduce Vibration at highway speeds Post by Gary_in_NJ on 08/13/18 at 14:04:09 First off, this is a BIG single, so it's gonna buzz, rattle, shake and vibrate. There ain't no stopping it. There are things you can do to lesson the annoyance of it all: - HAVE THE TIRES BALANCED. This is the number-one reason for vibration over 60 mph. Old tires get hard and make for a poor ride. How old are your tires? - Set up the suspension for your weight and riding style. In stock form, the Savage suspension is about the lowest spec suspension available. Proper springs and fresh oil with the sag correctly set will do wonders for ride and handling. The shocks are garbage...not much you can do with them other then replace them. - Service (grease) the swing arm and axles. - make sure that the bike is in proper tune. A clean airfilter, properly adjusted valves, a properly jetted carb and a fresh sparkplug can go a long way in smoothing out unwanted vibes. - New handgrips and foot pegs can help. So will a custom gel seat. - Head porting, especially on the exhaust side will help. |
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Title: Re: Reduce Vibration at highway speeds Post by mtstorm on 08/13/18 at 15:55:56 Thanks! I'm going to start with checking the engine to frame mounting bolts and getting gel insoles for my boots. :) The tires are oem and 4 years old. I planned to replace them in the spring, so I'll look into the 150/90-15 rear tire. It just got a tune up, new spark plug, and jetted about a month ago. It's pretty much stock. I added iso grips and floorboards. I don't notice the vibration for short 1-2 mile blips up to 85, but once I get on the freeway and hit 75 for 5+ miles, my goodness. The Kawasaki front pulley sounds like a good switch. |
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Title: Re: Reduce Vibration at highway speeds Post by hotrod on 08/13/18 at 17:32:27 After about 4 beers.....Man that bike is smooth. :o |
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Title: Re: Reduce Vibration at highway speeds Post by mtstorm on 08/13/18 at 18:14:36 6F464A4A425516270 wrote:
After 4 beers I'd be feeling the world turning. No need to worry about the bike vibrating. ;D ;D ;D |
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Title: Re: Reduce Vibration at highway speeds Post by Dave on 08/13/18 at 18:15:49 0220213B2E212E4F0 wrote:
I would strongly suggest moving from the stock 140/80 to the 140/90.....rather than the 150/90. I know the 140/90-15 Michelin Commander will work with the Kawasaki front pulley - but it just barely misses the cross member on the swing arm......I doubt if you can use the Kawasaki pulley if you go to the 150/90 tire. A 140/90 tire is approved for use on the stock 2.75" wide rim - a 150/90 is not recommended for anything less than 3" wide. http://i61.tinypic.com/291nvvt.jpg |
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Title: Re: Reduce Vibration at highway speeds Post by GOF on 08/14/18 at 13:11:32 6C575A4D5C504B4D565E534C3F0 wrote:
I would strongly suggest moving from the stock 140/80 to the 140/90.....rather than the 150/90. I know the 140/90-15 Michelin Commander will work with the Kawasaki front pulley - but it just barely misses the cross member on the swing arm......I doubt if you can use the Kawasaki pulley if you go to the 150/90 tire. A 140/90 tire is approved for use on the stock 2.75" wide rim - a 150/90 is not recommended for anything less than 3" wide. http://i61.tinypic.com/291nvvt.jpg[/quote] Thanks Dave. Useful information! |
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Title: Re: Reduce Vibration at highway speeds Post by batman on 08/16/18 at 08:50:40 Or you could slow down to a more reasonable speed (legal) of 65-70 ,steady cruise at 75-80 is pushing the bike rather hard ,88 to 94% of it's stock rated speed. 70 mph gives you a nearly 20% reserve for passing, or hazard avoidance ( 80 mph will give nearly zero as the bike will gain speed very slowly). |
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Title: Re: Reduce Vibration at highway speeds Post by justin_o_guy2 on 08/16/18 at 11:10:36 Without some rpm lowering change your engine will blow oil at those speeds. Keep an eye that. |
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Title: Re: Reduce Vibration at highway speeds Post by mtstorm on 08/17/18 at 08:59:40 2B343235282F1E2E1E26343873410 wrote:
75 is the legal speed limit on that road. Everyone does 80-90 on it, so if I'm going 65-70 it's dangerous with traffic. It's safer to keep moving with traffic then having cars fly up behind me, slam on their brakes, and ride my butt until they can left lane pass. I don't ride the interstate much, most everywhere I can get via 55mph roads except a couple places. |
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Title: Re: Reduce Vibration at highway speeds Post by Gary_in_NJ on 08/17/18 at 12:10:44 The Savage just isn't a good highway machine. It's lovely to ride at 50-60, but beyond that it's punishing. |
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Title: Re: Reduce Vibration at highway speeds Post by Dave on 08/17/18 at 12:22:44 694B4A50454A45240 wrote:
75 is the legal speed limit on that road. their brakes, and ride my butt until they can left lane pass. [/quote] I have been on those kind of highways before - once I rode my little Ninja 250 down to Bowling Green, KY and I was on the Bluegrass Parkway.....and I had to go 75mph just to keep up with the traffic in the slow lane and not get pushed off the road. (Thankfully the 250 Ninja can go 75mph when needed). I just drove my car on I-75 down to Florida and the legal speed limit is 70mph - few folks are actually driving that speed....some RV's and trucks and us old folks do. Most folks were driving 75mph - quite a few were driving much faster. When I got into Florida I started to see quite a few Police Cars sitting in the median and a lot sitting at the top of the ramps.....and I saw several drivers pulled over - only in those areas did traffic drop down below 75mph. When I get into those situations I try and get behind a driver that is going a speed I can live with, and then follow them. The only downside is that when following semis the wind buffeting is a bit irritating. |
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Title: Re: Reduce Vibration at highway speeds Post by mtstorm on 08/17/18 at 15:38:14 UPDATE: [ch10003] Tires Gel Balanced [ch10003] Tires inflated to the correct air pressure. :-X Apparently I did not know how to read my tire pressure valve stem caps. I do now! ;) [ch10003] Engine is/was securely bolted down. [ch10003] Seat is now securely bolted down. Sometime in the last two weeks I managed to lose a bolt holding the seat and the other was loose. That may explain a lot of booty shaking. ;D [ch10003] Boots now have gel insoles. :) I have a 260 mile ride tomorrow. I plan to pop onto the interstate for 5 miles on my way home from the ride and give it a test. Thanks everyone for the suggestions! |
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Title: Re: Reduce Vibration at highway speeds Post by hotrod on 08/17/18 at 20:59:37 Have fun. Watch out for the idiots. ;) |
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Title: Re: Reduce Vibration at highway speeds Post by mtstorm on 08/18/18 at 18:47:37 UPDATE 2 One or the combination of fixes solved the issue. There is now the expected and tolerable level of vibration at speeds 75-80 mph. I don't plan to take the bike on any long distances on the interstate, but jumping on the 20-30 miles to the next town over is very doable. Thank you everyone for your suggestions and help!!! :) edited for spelling :-[ |
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