jumping spyder

[chipshotin]

just recently while in 4th gear approaching 40mph i get a wicked shimmy with the front wheels ...braking quites it down so does shifting to 5th gear...checked lugs and air pressure and all is well ....not a daily thing..( I ride everyday ) have just over 6k miles on my girl..anyone else get this
pps:

 

[Pennyrick]

just recently while in 4th gear approaching 40mph i get a wicked shimmy with the front wheels ...braking quites it down so does shifting to 5th gear...checked lugs and air pressure and all is well ....not a daily thing..( I ride everyday ) have just over 6k miles on my girl..anyone else get this
pps:

Helps to tell us what you are riding. Some RT owners have had this problem ('11 & '12's) at the same 41-44 mph speeds but usually in 2nd or 3rd gear (you should not be in 4th gear @ 40mph) and traced it to tires. Either broken or slipping belts, lost wheel weights or improper alignment.

You just have to experiment with wheels and tires with your dealer to find the solution.

 

[Bob Denman]

If 40 in 4th gear does it; but it stops if you try 40 in 5th; it's not lugging...
A balance issue for the tires would continue to shake at 40; regardless of the gear...
I don't know... :shocked:
What would Scotty say??? :dontknow:

 

[Chupaca]

Little checking..!!

on your profile and see you have an RT S. Really lugging if you are playing with 4th and 5th gear at 40 mph. I don't get out of 2nd at 40 mph. Regardless, have you had any work done lately..? You could have the balance checked but not likely the problem. If it only does it occasionally it is hard to tell. Harmonics or road condition could cause it. If it gets more constant or worse have it checked for alignment, balance and tires. If your is a se5 you need to get your rpms up to get full engagement on the clutch...

 

[NancysToy]

A drivetrain or tire problem will occur at the same speed no matter what gear you are in. If the problem only occurs in higher gears at this speed, perhaps only under load, check your tach. Your rpm is probably too low and the engine is protesting. That is a classic sign of lugging the engine. It seems like tire shake but it is really the engine shaking.

 

[Firefly]

40 in 4th??? I'm usually still in 1st.... or 2nd if I'm riding slow.....:doorag:

 

[Highwayman2013]

Yes, keep those RPMs up above 4000. 40 MPH should be second or third.

 

[SNOOPY]

40 in 4th??? I'm usually still in 1st.... or 2nd if I'm riding slow.....:doorag:

I usually shift to 2nd at about 29 miles per hour, 3rd at about 44 mph.

I imagine the thing screams in 1st gear at 40 mph? :yikes: