Yamaha WR250R Mega Thread

[trizzo]

planning on mounting a new 47T rear sprocket tomorrow night... anything special about removing the stock sprocket and adding the new? is it as easy as unbolting, putting on the new and bolting it back up and tightening to proper torque? should i be using new bolts or can i re-use?

[EnderTheX]

Originally Posted by trizzo

planning on mounting a new 47T rear sprocket tomorrow night... anything special about removing the stock sprocket and adding the new? is it as easy as unbolting, putting on the new and bolting it back up and tightening to proper torque? should i be using new bolts or can i re-use?

If you have never removed the stock rear sprocket be very careful not to strip the bolts. They are on very tight with thread locker and lock nuts. You will want to let some penetrating fluid (or WD40) work it's magic before attempting to remove.

I would advise using new lock nuts when re-assembling... most lock nuts are one time use only (not as effective after you install and remove them once). You can use the same bolts if you have been careful during removal.

I used blue loctite and new lock nuts when I changed my sprocket... I am about to change it again soon so I will see how well that held up.

[trizzo]

Originally Posted by EnderTheX

If you have never removed the stock rear sprocket be very careful not to strip the bolts. They are on very tight with thread locker and lock nuts. You will want to let some penetrating fluid (or WD40) work it's magic before attempting to remove.

I would advise using new lock nuts when re-assembling... most lock nuts are one time use only (not as effective after you install and remove them once). You can use the same bolts if you have been careful during removal.

I used blue loctite and new lock nuts when I changed my sprocket... I am about to change it again soon so I will see how well that held up.

new chain and sprocket has arrived. sprocket has different bolt holes than the stock sprocket. do i need to find the bolts with heads to fit this sprocket, or can i just turn it around and use the back side that is flat?

heres a pic of the sprocket :



also, the chain is covered in this sticky compound. does that need to be cleaned off with chain cleaner and properly lubed, or is it safe to be on the chain during normal riding?

(sorry for my ignorance, this is my first chain/sprocket swap!)

[RichardU]

Originally Posted by trizzo

do i need to find the bolts with heads to fit this sprocket, or can i just turn it around and use the back side that is flat?
...

Find the right bolts. I typically order them with the sprocket. I'm cringing at the thought of flat bolts on the backside.

Also, I don't clean off the chain lube right away, but just add to it. Others may vary.

Nice picture BTW.

[bigdon]

MT 43 before and after.

Before



After 970 miles high speed highway, gravel roads, and four wheeler roads.



I think it did OK. Ran 22 psi on highway and 10psi dirt and gravel.

Ran loaded with camping gear!

[HardWorkingDog]

Originally Posted by trizzo

new chain and sprocket has arrived. sprocket has different bolt holes than the stock sprocket...also, the chain is covered in this sticky compound...

You'll need new bolts to match the beveled holes--same as for a YZ or WRF.

I always clean off that sticky stuff with kerosene and a toothbrush and start fresh with some good chain lube. Don't really know what that stuff is but it sure is a dirt magnet.

Good luck!

[Crawdaddy]

Originally Posted by bigdon

MT 43 before and after.

I think it did OK. Ran 22 psi on highway and 10psi dirt and gravel.

Ran loaded with camping gear!

You have ~2K miles left on that tire.......careful with that 22PSI on the highway though......center knobs may separate/rip at that pressure....

[bigdon]

Originally Posted by Crawdaddy

You have ~2K miles left on thar tire.......careful with that 22PSI on the highway though......center knobs may separate/rip at that pressure....

What do you recommend on the Highway? The tire got pretty hot on the highway at low pressure!

[Crawdaddy]

Originally Posted by bigdon

What do you recommend on the Highway? The tire got pretty hot on the highway at low pressure!

I wouldn't take'em over 15.....lower pressure hasn't been an issue for me.....

[Serevince]

So can someone please educate me on why the stock tires are called "Deathwings"?

What are the go to tire options for short folk who are not doing hard core trails?

Thanks

Vince

Sent from my DROIDX using Tapatalk

[SkidMarx]

Originally Posted by Serevince

So can someone please educate me on why the stock tires are called "Deathwings"?

What are the go to tire options for short folk who are not doing hard core trails?

Thanks

Vince

Sent from my DROIDX using Tapatalk

Dirt tires they are not.
The front washes out on anything loose and the rear doesn't hook up.

They are actually pretty good on dry pavement(not sure about wet) and hard pack dirt. Everything else...not so much.

[DougZ73]

Originally Posted by Serevince

So can someone please educate me on why the stock tires are called "Deathwings"?

What are the go to tire options for short folk who are not doing hard core trails?

Thanks

Vince

Sent from my DROIDX using Tapatalk

They slip something terrible in any slippery type terrain, like sand or mud. They also have inconsistent predictability. I took off my Trailwings after one 29 mile ride.

The Dunlop D606 is a good all around tire..jack of all trades tire, master of none.

I like 90/10 tires for the riding I do, and use either Kenda Track Master II's or Pirelli XCMH's. Both are great in the slippery type stuff I mentioned above, and have good predictabilty.

[HardWorkingDog]

Originally Posted by Serevince

So can someone please educate me on why the stock tires are called "Deathwings"?

Don't get me started...

It's an unwarranted meme that people have latched onto when they find a 50/50 tire like the Trailwing isn't as good as a D756 knobby in mud, or a Michelin Pilot Sport on pavement.

I've actually found it to be a very good 50/50 tire, exactly what it was designed for. I've ridden it in mud, sand, gravel, rocks and pavement and has performed decently everywhere, with the understanding that it's a compromise tire. Last weekend I rode 160 miles of all pavement, mostly narrow twisty single lane roads and I managed to get all the way to the edge on the front tire (no "chicken strip" ) but still had a ways to go on the rear...

I'll replace it with a more dirt-oriented tire, but that's because I ride it 90/10 dirt to pavement.

[DougZ73]

I know some people like them, but they do not get a bad wrap from out of thin air. It comes from people having a bad experience with them. I had full intentions on leaving mine on, and not buying new tires right away, as seeing that I just bought a whole new bike.

That one ride, that I went on, before I took them off, was enough for me to decide they were hazardous. I slid out, and went to the ground, a couple times on that ride...on trails I ride every weekend. The tire did not do what I wanted or needed it to do. That is why I took mine off, and not because of anything I read on the internet.

I decided to check the durometer of the compound. Sure enough, it was 10 duro higher than the Kenda or Pirelli's. Harder compound, less grip. Plain and simple.

[madisonreid]

Originally Posted by DougZ73

I know some people like them, but they do not get a bad wrap from out of thin air. It comes from people having a bad experience with them. I had full intentions on leaving mine on, and not buying new tires right away, as seeing that I just bought a whole new bike.

That one ride, that I went on, before I took them off, was enough for me to decide they were hazardous. I slid out, and went to the ground, a couple times on that ride...on trails I ride every weekend. The tire did not do what I wanted or needed it to do. That is why I took mine off, and not because of anything I read on the internet.

I decided to check the durometer of the compound. Sure enough, it was 10 duro higher than the Kenda or Pirelli's. Harder compound, less grip. Plain and simple.

I think they are a very good 50/50 tire and easy off roads. The guys who demand more off road capacity.....they are throw aways. They work for me just fine.