Anyone else experienced this Thumping noise when turning? Ideas on Cause and/or cure?

[cruisinTX]

I have a friend with a '22 RTL that has a very noticeable thumping noise during a sharp turn in either direction. We listened to it carefully yesterday both on and off the RT. It is difficult to even tell where it is coming from and does seem louder during aggressive turns and quieter during very slow turns but is always there and always during full lock (stop?) turns. We did search around the sway bar connections and at the back using a flashlight but could not see anything obvious such as loose lock nuts, etc. to no avail. Has anyone else experienced this? If so, what was the cause and cure? Planning to put it up on stands in the next day or so to get a better look.

 

[Elwood58]

Make sure and check all lug nuts and caliper bolts.

 

[cruisinTX]

I stumbled on a thread in the General Discussion section about the sway bar causing a clunking noise.

https://www.spyderlovers.com/forums...solution-to-the-Bajaron-Ultra-sway-bar-clunk-!

I didn't use the term "clunk" in my search but am thinking the problem addressed there is exactly what we are hearing in the one here. None-the-less, I will still look at those things you mentioned. Thanks.

 

[BajaRon]

If it is a sway bar issue, this is easily identified. Just rock the Spyder left and right vigorously. If you don't get the sound, it isn't the sway bar. In a turn, the sway bar would make a single clunk per turn. It would not repeat until you turned again.

 

[Lee0123]

Did you check for stuff rolling around in your cases? Like the forgotten aluminum water bottle my wife didn't tell me about but I could hear?

 

[Two2Three]

Has he upgraded tires recently? When I switched to car tires, I got a rubbing sound in sharp turns. Fixed it by adding washers to the fender.