Honda CBR250R.

[Navin]

Was the chain out of spec as far as measurement between links?

Where do you believe the HP line is as far as when sprockets wear out?

Our XR80s used to destroy sprocket and chains as a set, not sure there is anything with less HP out there.

[larryboy]

When I look at a sprocket and decide it's not worn is when I say it doesn't need to be changed, case closed, next topic.

Still getting 50 mpg.

[Navin]

What miles were on those sprockets and how many chains do you fit to them without changing?

One of my brothers eyeballs his sprockets too, they always look great, even though his chains are bagged before 5k miles. He attributes that to "cheap" chains. He must be on his 4th chain on that set. He'll never admit the sprockets wear out.

Your MPG might go up if your sprockets weren't chewing thru a new chain!

[SilkMoneyLove]

I would say that alignment and proper lube and adjustment are the next biggest factor for chain life outside of new sprockets.
You can get chains fairly cheap now. Say you get 15,000 out of the first chain with new sprockets, then throw on another $30 chain and try to squeeze another 8-10 thousand miles out. You are still ahead as opposed to dropping $45 for new sprockets and $30 for a new chain as a matched set to get 15,000 miles every time.
Obviously if the sprockets look worn, it is time to toss them, but good looking steel sprockets should last a long time

[larryboy]

$30 chain?

Not gonna argue with you, Navin. Do what you like and I'll do what I like. BFF's?




Just did my first valve adjustment, what a pain in the ass!! 23,000 miles...intake were right in the middle of the range still, exhaust were just a tick out of spec to the tight side..moved them to the middle of the range. I'll check them in a couple of months at 30,000 miles.

I had told myself that I'd just pull the cams when I needed to swap shims, but noooo...won't listen to myself, dropped a shim and had to pull the cams anyways.


Edit, make sure you have calipers for a valve adjustment...the numbers were worn off of both shims, good thing I had my calipers at home or I'd have been screwed.

[TonyKZ1]

So what's it like doing a valve check/adjustment on the CBR250R? I've heard that you can remove a bolt and then slide the cam out of the way or something like that, then change out the shims. That sounds a lot easier than having to remove the cams as on some other shim adjusted bikes.
Thanks, Tony

[Navin]

[QUOTE=larryboy;20749772]$30 chain?

Not gonna argue with you, Navin. Do what you like and I'll do what I like. BFF's?



Agreed, totally VBFF

I haven't bought a $30 chain in the last 20 years! since my kids were racing a JR50! I didn't know you still could!

[sniper1rfa]

Originally Posted by TonyKZ1

So what's it like doing a valve check/adjustment on the CBR250R? I've heard that you can remove a bolt and then slide the cam out of the way or something like that, then change out the shims. That sounds a lot easier than having to remove the cams as on some other shim adjusted bikes.
Thanks, Tony

That bit is easy.

Getting to that bit is a pain. Especially for ABS bikes.

[larryboy]

Originally Posted by sniper1rfa

That bit is easy.

Getting to that bit is a pain. Especially for ABS bikes.

Here's how I do it, non-ABS bike.

Body side panels off, radiator with fan pulled to the left side, valve cover off, cam chain tensioner off, cam chain slapper over the cams off, cam caps off, rocker shafts out, lift cam and pull the rockers out and set aside, magnet the shims out, new shim stuck to finger with grease, hold cam up with chain in place, pop new shim in, repeat as needed, put back together.

Huge stressful pain in the ass!! I much prefer a large 29 mm valve shim like a KLR, something I can get my hands on.

Plus side? Only one adjustment in 23,000 miles.

[damasovi]

So a question to anybody here,

then this bike first came out a was all over it, and actually started saving my pesos, but now the the Ninja 300 is out, so, for you after owning the CBR250 are you thinking of selling it and moving to the Ninja 300? If so why?

Thanks

Damasovi

[larryboy]

I don't like Kawasakis, they aren't as well made as a Honda IMHO. I'd choose one of the Honda 500's over the 250 given the choice right now.

[sniper1rfa]

Originally Posted by damasovi

So a question to anybody here,

then this bike first came out a was all over it, and actually started saving my pesos, but now the the Ninja 300 is out, so, for you after owning the CBR250 are you thinking of selling it and moving to the Ninja 300? If so why?

Thanks

Damasovi

That would be pointless. It's not that much better.

I might have considered it to begin with though.

[TonyKZ1]

There's a guy over on the CBR250 forum that did just that, trading his CBR250 for a new Ninja 300. He's also posted his opinions/comparisons of the bikes.
Tony

Originally Posted by damasovi

So a question to anybody here,

then this bike first came out a was all over it, and actually started saving my pesos, but now the the Ninja 300 is out, so, for you after owning the CBR250 are you thinking of selling it and moving to the Ninja 300? If so why?

Thanks

Damasovi

[Bugz]

Originally Posted by larryboy

I don't like Kawasakis, they aren't as well made as a Honda IMHO. I'd choose one of the Honda 500's over the 250 given the choice right now.

Out of curiousity; why would you prefer the 500's over the NC 700?

I wouldn't be suprised if you'd get better milage with the 700 compared to your current 250. That bike should be more in it's element doing 75 - 85.

I havn't ridden on both of them though I think I'd go for the 700, especially for commuting.

*edit* is the whole adv website changed of format? All colours look...different to me oO?

*edit2* already figured it out. Somehow the adv website skin changed. Completly out of itself. Must be the smurfs.

[damasovi]

Thanks guys!

Damasovi