Well as the title says I'm probably going to want to change the gearing in my bike since it never sees the road, except for little half mile sprints. The stock gearing is 16/43 and that's what is on it now. At this ratio it's supposed to top out around 85 which is way too much for what I'll ever need. I doubt I ever get the thing above 70 in any situation and when it does get up to those speeds it's only their for a few seconds, then back down to lower speeds on the trails. I was going to drop the front sprocket to at least 14 and maybe 13. The back sprocket I was going to leave alone because it's pretty new. If I were to change it I'd probably bump it up to a 45t or so but I don't think I will for now since it's in good shape and I have better things to spend 20+ dollars on. The chain was replaced recently since the old rusty one snapped on me. I'm leaning more towards a 13t since I really don't need all the speed this bike can deliver with stock gearing. I don't think I've touched 5th gear other than to test it to make sure it was there when I got it. First gear could definitely be lower because I'm often slipping the clutch and I feel there are alot of places where I'm in between gears either lugging in 3rd or revving to much in 2nd. And the same with lugging in 2nd and revving too much in 1st especially on steep hills. I'd love to just put it second and have a controlled climb.

What are your opinons/suggestions?

the 13t would drop the top speed to 70 according to my math.

Edited by 79yamdt, 13 April 2012 - 11:14 AM.

Front sprockets are pretty inexpensive, I'd buy a 13 and a 14 tooth and see which one feels best for the conditions I would be riding in.

jonboat, on 13 April 2012 - 02:21 PM, said:

I think I might. I might get a larger rear also. I know my DT 250 had like a 51 or 53 tooth rear, freaking massive. I'm not around my bike right now do you think I'll have any chain rub problems with a smaller sprocket? You have a DT400 also don't you?

Edited by 79yamdt, 13 April 2012 - 03:05 PM.

Yes I have a 78 400 also, its new to me and pretty much stock. I've only put about 25 miles on it so I can't give  you much advice about the gearing or possible chain rub.

Well thanks for the suggestion anyways. I have an account over at yamaha enduro but i'm having problems with it and have been for the last month or so, I can't post anymore and can only access the site on my phone. The admins are trying to figure it out. I'd ask over there because I'm sure people there have. I'll just have to resort browsing on my phone. I've seen some of your posts over there too. Unless someone just randomly has the same username haha.

I've been having problems with that site also. Something about not being able to send me emails. I'll figure it out soon because that site has a bunch of useful info and I want to get my 400 on the road soon.

Well I just decided to buy both the 13 and 14 tooth sprockets. As long as the 13 tooth doesn't cause any chain rub that'll be the one I'll start with. It's gonna be a big jump from a 16 but I have no need for all the speed the bike can deliver.

Edited by 79yamdt, 15 April 2012 - 10:53 AM.