Total Backlash?

[Kross Kountry]

No I don't mean road rage or Anti-Government speech.

 

I just changed out my Final drive (aka pumpkin) to a set of V-max gears from Sportmax. Its been raining since I finished so I haven't had a chance for a test ride. But one thing that I have noticed is that the new Pumpkin seems to have about twice the backlash as the factory gears. When I ordered the part I did ask John, the owner of Sportmax, about the backlash and he stated that it would be set to factory spec. I felt like my factory set had a little to much, wasn't sure thought. Now I know that there are several parts of the drive train that contribute to the total amout backlash, and too little backlash is a recipe for problems (heat, gearwear, gearwhine and owner whine). So here's my questions to those who know?

 

1 - Can you measure the total amount of lash at the tire? ie Mark the tire tread, in gear, measure the total free play.

 

2 - If so how much free play should there be? Mine measure about two inches with the V-max setup.

 

3 - Could my factory set of gears been too tight and causing some of the gear whine? I have had the clutch basket changed once with no real good results.

 

I should add that John at Sportmax was very nice and went out of his way to get me the parts quickly. So far he gets an A+ for service.

[Whitlow]

I'm interested in know just how you like the different set up I was thinking about doing this myself.

[dingy]

What kind of bike you got?

 

Gary

[Kross Kountry]

What kind of bike you got?

 

Gary

 

 

2008 RSV, I changed my user cp once, maybe it'll stick this time.

[dingy]

2008 RSV, I changed my user cp once, maybe it'll stick this time.

 

This is going to be an apples to oranges comparison then.

 

I have a 2004 FJR rear end, very similar to Vmax rear end.

 

1988 engine.

 

I measured right at 1 3/4" at outer edge of rear tire, with bike up on center stand.

 

Gary

[Kross Kountry]

Thanks, Dingy

 

Thats close enough for a town this size. I would be interested in what the other members come up with on their bikes. Most especially those with a lot of gear whine or chirp.

[Squeeze]

You should pick a one Gear to check that Amount.

 

This "total" Backlash is different in each Gear.

[dingy]

This is going to be an apples to oranges comparison then.

 

I have a 2004 FJR rear end, very similar to Vmax rear end.

 

1988 engine.

 

I measured right at 1 3/4" at outer edge of rear tire, with bike up on center stand.

 

Gary

 

You should pick a one Gear to check that Amount.

 

This "total" Backlash is different in each Gear.

 

 

1 3/4" was in 2nd gear

 

Closer to 2" in 1st gear

 

Gary