hello first time poster so i am gonna try to figure out how to attach photo but i have a 2006 f4I and i am having a problem with chain slap bad i know why but is there n e thing i can do to stop it or add to help the slack its all good under accel but when i let out of the throttle it slaps the swing arm and on the bottom i need some sort of guide too bc if i push the chain it can hit the tire so i need some sort of guide on a spring to take the slack out thanks for the help. . . this is the only pic i can get to upload but u will still see the general idea

 

have you tightened the chain?

 

yea its extended i think around 16" and if i tighten it n e more its way to tight on top but i know my sprockets are in line too

 

larger sprockets front an rear will help take some sag out of it ( and slap by default)
That's a pretty good stretch there Bud

Also I'd stiffen the rear shock to the max for less swingarm travel and tighten the chain
as much as possible without having it tight to the point where the countershaft bearing
gets trashed. You'll need to try a few different tension settings on it I reckon

 

yeah +1 what sprock said, go with bigger sprockets, just do the math for whatever final drive ratio you want and get those. So what made you want to stretch your bike that much? Looks/customization? Or do you just like to race it/bring it to the track?

 

I'm not real big on stretches myself but i gotta say that looks good in pics.

 

thanks for all the info i will strt looking for sprockets i think i am gonna go with a smaller chain too i am running a 630 right now i think i am gonna go down to a 520 and yea i did it mainly for the track but i like the looks of it too . . . any advice on the chain size a 520 will be ok wont it? thanks for all the help and comments

 

yeah i was gonna say im not a big fan of stretched bikes unless its someone doing it for the track but this actually looks good. I dont think ive seen any stretched f4i's so i dunno if its just yours or maybe f4i's look good stretched but i like how it looks too in this case.

 

I guess I am the only one that thinks that it looks stupid and boring to ride?

 

I forget who had/has the bike...but the transformers f4i has a stretched swingarm though a little more conservative than 16 I think.

To the OP...By taking that to the track I'm assuming for drag, because I would think that muchof a stretch would kill your cornering ability.