DR650 turned into SM, now has a problem

Rider · 05-20-2009, 02:49 PM

One of my coworkers has a Suzuki DR650 that he turned into a SM. He took off the 21" front wheel and put a 17" front wheel on it. Now he is experiencing what he is calling a "tank slapper" like condition when he gets to about 70mph. He cant figure out why. I'm guessing that by going to the smaller wheel, he essentially lowered the front of the bike 2 inches and has fucked up the steering geometry. Anyone have any thoughts on what is wrong? Forks are bad? Wheel is bent? It doesn't have any problems below 70mph.

05-20-2009, 02:49 PM	#1
Rider Moto GP Star Join Date: Feb 2008 Posts: 12,156	DR650 turned into SM, now has a problem One of my coworkers has a Suzuki DR650 that he turned into a SM. He took off the 21" front wheel and put a 17" front wheel on it. Now he is experiencing what he is calling a "tank slapper" like condition when he gets to about 70mph. He cant figure out why. I'm guessing that by going to the smaller wheel, he essentially lowered the front of the bike 2 inches and has fucked up the steering geometry. Anyone have any thoughts on what is wrong? Forks are bad? Wheel is bent? It doesn't have any problems below 70mph.