Will two extra chain links work with -1/+2 spockets?

bjay51d · 12-01-2007, 3:03 PM

I ran across a great deal on a DID vm530 xring chain but the chain is longer that stock (108 vs 110)Im gonna changing sprockets also -1/+2 so maybe the extra two links would be cool.What do you guys think?

slickwill · 12-01-2007, 5:09 PM

It's easy to cut out the two extra links. Very few chains are actually cut to exact length.

slickwill · 12-01-2007, 5:17 PM

Just ran the numbers. It will add .44" to your overall wheelbase if you also change the sprokets. You should have that much adjustment without problems but you will have to decide if you would rather have your wheelbase slightly shorter or slightly longer.

Putting on the -1/+2 sprockets will subtract .19" from your wheel base the extra links add .63" so net change .44"

HondaGalToo · 12-01-2007, 5:32 PM

Yah, what he said. The stock chain should fit with the -1, +2 combo. I did -1, +1, it's awesome!

bjay51d · 12-01-2007, 5:57 PM

thanks slick & hondagal....

hondagal, Do you think -1/+2 is to aggressive?I really dont mind the stock setup.But wouldnt mind a little myore takeoff grunt.I dont want to run through a tank of gas in 35 miles either.

segiano · 12-01-2007, 6:44 PM

I have heard that reducing the front sprocket size puts an increased load on the output shaft of the transmission. I recall reading this on sites discussing modifications to stunt bikes where they make significant changes to the the sprocket sizes. Does anyone have any experience with this? Thanks

bjay51d · 12-01-2007, 6:55 PM

Quote:

Originally Posted by segiano

I have heard that reducing the front sprocket size puts an increased load on the output shaft of the transmission. I recall reading this on sites discussing modifications to stunt bikes where they make significant changes to the the sprocket sizes. Does anyone have any experience with this? Thanks

come to think of it i heard something like that before.I also heard the tigher radius of the sprocket messes up the chain quicker...

HondaGalToo · 12-01-2007, 6:56 PM

Going -1 on the front, at least for the 929/954 is no problem at all. No more than that, though.

bjay, the -1, +2 probably won't be too aggressive, although if you do a lot of highway it'll be revving higher. Some guys think it should've come -1, +2 stock. For the tracks I ride (well, used to with the 9er) the -1, +1 combo was perfect, including the tracks with the long (3000 ft) straights.

slickwill · 12-01-2007, 7:00 PM

It should reduce the load on the output shaft since it is effectively lowering the gear ratio.

Just think about a bicycle. Little gear in the front. Easier to pedal. Reduced load on your legs (the output). Bigger in back same effect.

Bigger up front or smaller in back...harder to pedal, increased load.

But the increased angles due to the reduce number of teeth can cause more chain and spocket wear.

moultensoul · 12-05-2007, 10:34 AM

Going with the smaller front sprocket has a tendency to put a strain on the chain and will wear the sprocket faster due to the reduced rdius of the sprocket. I've seen guys who don't pay very much attention to their chains, let them dry up and run real loose, and the chain can really mess things up so keep up on your chain maintenance. I installed a chain oiler on one of my bikes this summer to see how it worked, and after about 2500 miles all I have had to do is clean my rear wheel. I haven't even had to tighten the chain. It sure saves on the messing with my chain time. Oh well good luck, and that should give you quite a little more grunt!