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#1 | Wobbly at high speeds datum

Thu Jun 28, 2018 5:49 pm (Last edited: Thu Jun 28, 2018 5:53 pm)

Just an observation, was doing some freeway yesterday. Slowing down and accelerating to about 180km/h full throttle. The front gets wobbly at higher speeds, suspension was set in road mode, engine in dynamic.

No paniers or topbox involved, screen in lower holes and upper position. I must say I have a machineartmoto avant guard engine protector. Maybe a combination of all these made it wobbly.

Thinking screen low, suspension on dynamic will give more stability at high speeds but haven't tried it out.

You guys felt it too, someone with avantguard or similar engine protection? Any thoughts?

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#2 | RE: Wobbly at high speeds datum

Thu Jun 28, 2018 5:59 pm

I have ridden both my RS's past 200 kph (130 mph) with no stability problems. Avant Guard on both, stock windshield. Consider outside forces like crosswind, buffeting from other traffic, tires or anything else.

Frank

2017 R1200RS- 13,000 mi. 10 mos.
2003 R1100S Boxer Cup Replika #6/200
1985 K100/1100RS- 326,000 mi. 33 yrs.
2016 R1200RS- 28,322 mi. 18 mo. (gone)
2011 R1200RT- 30,000 mi. 2 yr. (gone)
2005 R1200ST- 58,000 mi. 8 yr. 3rd deer killed it.
1999 R1100S- 15,000 mi. 2 yr. (gone)
1996 Ducati 900SS/SP- 89,000 mi. 12 yr. (gone)

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#3 | RE: Wobbly at high speeds datum

Thu Jun 28, 2018 6:05 pm (Last edited: Thu Jun 28, 2018 6:07 pm)

Maybe,

I'm normally always in dynamic and windshield down, so maybe because of road and up it felt different.

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#4 | RE: Wobbly at high speeds datum

Thu Jun 28, 2018 7:25 pm

when I tested the last year on the highway was 200 km/h no problem. After 180 km/h I stopped and put the windshield up, then could drive as if on rails.

Regards,
Holger
Moderator and Admin

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#5 | RE: Wobbly at high speeds datum

Thu Jun 28, 2018 9:19 pm (Last edited: Thu Jun 28, 2018 9:20 pm)

I presume you have checked your steering damper is working correctly ? And head bearings ?

Ged

2017 RS grey/white/red.

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#6 | RE: Wobbly at high speeds datum

Thu Jun 28, 2018 11:15 pm

Front tire condition, as well. Though the RS doesn't seem as sensitive as other brands I've ridden

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#7 | RE: Wobbly at high speeds datum

Tue Jul 03, 2018 3:34 am

I didn't think that much of the stock steering damper. Put an Ohlins on right away and noticed a big improvement, especially on aggressive cornering.

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#8 | RE: Wobbly at high speeds datum

Tue Jul 10, 2018 8:59 pm (Last edited: Tue Jul 10, 2018 9:00 pm)

Yet again on my current Germany trip I find the bike goes a little �light� on the front end with fully loaded panniers & top box.

My GPS shows 193 kph max. I�m sure 200 would�ve been ok if traffic had allowed, but I don�t think I�d push it over 200 comfortably.

A bit of wind has a serious negative effect on maximum speed.

BTW - 200 is only 124

Carpe Diem!

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#9 | RE: Wobbly at high speeds datum

Tue Jul 10, 2018 9:13 pm

Zitat von Boxerboy55 im Beitrag #8
Yet again on my current Germany trip I find the bike goes a little �light� on the front end with fully loaded panniers & top box.

My GPS shows 193 kph max. I�m sure 200 would�ve been ok if traffic had allowed, but I don�t think I�d push it over 200 comfortably.

A bit of wind has a serious negative effect on maximum speed.

BTW - 200 is only 124

I saw 140mph on the speedo when on an autobahn, chasing a mate on his Trophy 1200 after getting stuck behind a truck overtaking another truck. Satnav says it was 126.5mph.

I tried getting to that speed on the way home but a crosswind made the handling wobbly. Topboxes make the handling horrible in windy conditions, especially sidewinds.

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#10 | RE: Wobbly at high speeds datum

Tue Jul 10, 2018 11:01 pm

Details of the damper please!

I would like to apologize to anyone I have NOT offended. Please be patient. I will get to you shortly.

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#11 | RE: Wobbly at high speeds datum

Sat Jul 14, 2018 10:14 am

Sounds interesting, any link?

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#12 | RE: Wobbly at high speeds datum

Sun Jul 15, 2018 7:08 am (Last edited: Sun Jul 15, 2018 7:14 am)

Check tires , check tires ,did I say check tires . As already mentioned try again on a different road. Spin tires off the ground carefully and run your hand over them to check for unevenness that is most common cause for that symptom . Of course it could be many other things a lost wheel weight or whatever .
Steering damper , I guess a bad one could cause the old tank slapper too.

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