Yamaha WR250R Mega Thread - Page 1507

10Cup · 06-20-2011, 08:21 AM

Quote:

Originally Posted by Machtig

I just replaced mine just over 1000 miles ago. I start the TAT and the darn thing is already toast. I don't know what to do at this point. I don't think its too tight? I don't think its too loose. I might be able to make it home but I'm gonna need a new one at any rate.

The only cure is to run the chain tighter than you like it and never run a 12T on the front. Sad but true.

Machtig · 06-20-2011, 08:23 AM

one respected member says run it loose, another run it tight. I need a consensus here folks

I got 3000 more miles to go till I get home.

DougZ73 · 06-20-2011, 08:25 AM

Yamaha changed their spec from 25 mm to 8 mm of slack in chain..IIRC. I suspect that was their response to this issue...chains eating the slider and then the swingarm.

10Cup · 06-20-2011, 08:31 AM

Quote:

Originally Posted by Machtig

one respected member says run it loose, another run it tight. I need a consensus here folks

I got 3000 more miles to go till I get home.

Well I have 31,000 miles on mine and I don't eat up chain guards. Do with it as you will.

Machtig · 06-20-2011, 08:34 AM

Quote:

Originally Posted by 10Cup

Well I have 31,000 miles on mine and I don't eat up chain guards. Do with it as you will.

Mine is on the tight side right now and it ate the chain slider in 1000 miles. How tight is tight?

kawagumby · 06-20-2011, 08:37 AM

Quote:

Originally Posted by 10Cup

Well I have 31,000 miles on mine and I don't eat up chain guards. Do with it as you will.

LOL, and almost all of my miles are off-road....so there you go....

I'd go with 10Cup if I were a slab rider.

trav72 · 06-20-2011, 08:38 AM

Quote:

Originally Posted by kawagumby

Assuming the swingarm buffer is made of similar plastic as the others (very likely) if there is excessive wear it is likely due to too tight chain adjustment and/or too small sprocket (if changed). I always run my chains on the loose side and never have any swingarm buffer problems, which includes my WRR.

Yes, I'm in agreement that this is caused by a chain that's to tight, the weight on the rear suspension and the terrain that's normally ridden. I tend to run my chain fairly loose and I've also had a heavier spring installed for my weight. I think because of those two changes, I was spared more damage than I have. If your chain is tight and the rear suspension is compressed more than it should be, your chain is going to wear the bottom of the slider very fast and eat into your swingarm.

kawagumby · 06-20-2011, 08:43 AM

Quote:

Originally Posted by Machtig

Mine is on the tight side right now and it ate the chain slider in 1000 miles. How tight is tight?

Push down on the suspension as hard as you can - get some help from someone else...is the chain getting tight? Then it needs to be loosened some - when my chains are too loose I hear them - they are noisy way before they skip.

This may sound silly, but are you lubing the chains enough? I would imagine for long hauls a bit of chain lube on the surface of the chain would help keep the heat and wear down on the swingarm buffer. It is only plastic, after all, and subject to heat deformation at lower temperatures easily attained by friction.

One thing about off-road riding - the chain is probably lubed fairly often compared to road trips and it probably stays a bit cooler with the stop and go. On the hiway, you can go many, many more wheel revolutions in the same amount of time and more so on longer trips.

scottmac · 06-20-2011, 10:21 AM

I just sent a new chain slider I'd ordered a while back Brian's way
overnight UPS. It should be there by the end of the business day
tomorrow.

zora · 06-20-2011, 10:24 AM

Well, I did the hillclimb yesterday. I gave it my best shot.

There are three runs back to back shown in this video, I am the second one.

This was my first attempt.

You can get an idea of the steepness of the hill when after the first guy goes down, you see the helpers on the side of the hill having to walk over practically on all fours, like gorillas

There were about 125 riders in total and I was the only chick except one other girl who was in the Pro Class with an actual hillclimbing bike.

I did end up making it higher than several other riders though!

My husband took this video and sadly you don't get to see my actual wipeout as it happens...I think he was a little more concerned about me than filming the action.

GotMojo? · 06-20-2011, 10:29 AM

Quote:

Originally Posted by Machtig

one respected member says run it loose, another run it tight. I need a consensus here folks

I got 3000 more miles to go till I get home.

BigDog from BigDogAdventures.com has a lot of off-road miles (nearly 20,000) on his WRR and he says on his website:

"If you are checking you guide for wear and the bottom of the guide doesn't come all the way to the front of the swingarm----it is worn out and you may be digging into your swingarm---probably are. I've been running my chain looser than the manual says and so far the chain is not wearing on my guide at all."

mcwbyu82 · 06-20-2011, 10:29 AM

Nice job! Any damage or does the hay make for a pretty soft landing?

zora · 06-20-2011, 10:46 AM

Quote:

Originally Posted by mcwbyu82

Nice job! Any damage or does the hay make for a pretty soft landing?

My knee is pretty messed up today. It got caught under my bike on the first run, but all in all I am in one piece - just sore as hell cuz of my second run. I'll post that in a bit.

zora · 06-20-2011, 10:57 AM

There were about 250 runs total and I won "Best In Show" for my dismount.

My second run.

A little breakdown:

What you can't see cuz of the grass.....

I ended up doing a front flip, but OFF OF MY HEAD instead of my hands. I was bent backwards in half like some sort of circus contortionist. Ouch. Luckily I didn't snap my back or neck in two.

vintagespeed · 06-20-2011, 11:00 AM

Quote:

Originally Posted by zora

Well, I did the hillclimb yesterday. I gave it my best shot.

awesome, good job! those 2 stroke guys need to get on the pipe and how come nobody was standing up on this climb?

get on the pipe, get over the bars and pin it.

06-20-2011, 08:25 AM	#22593
DougZ73 Lacks Freetime Joined: Oct 2009 Location: NJ Oddometer: 4,978	Yamaha changed their spec from 25 mm to 8 mm of slack in chain..IIRC. I suspect that was their response to this issue...chains eating the slider and then the swingarm. __________________ Skyline Drive 11/2010 , Catskills 2010 trip, Catskills 2011 , Southern TNJT, 2011 WRR/X rear shock adjustment , DZ Moto Photo Bloggin' , Learning photography thread - Ryder Joseph Z. , Born 11/26/12-- the next Adventure begins.

06-20-2011, 10:21 AM	#22599
scottmac Beastly Adventurer Joined: May 2008 Location: La Selva Beach, CA. Oddometer: 1,290	I just sent a new chain slider I'd ordered a while back Brian's way overnight UPS. It should be there by the end of the business day tomorrow. __________________ The Hills have Eyes A Small Boring Ride

06-20-2011, 10:24 AM	#22600
zora the explora Joined: Mar 2009 Location: WI Oddometer: 1,703	Well, I did the hillclimb yesterday. I gave it my best shot. There are three runs back to back shown in this video, I am the second one. This was my first attempt. You can get an idea of the steepness of the hill when after the first guy goes down, you see the helpers on the side of the hill having to walk over practically on all fours, like gorillas There were about 125 riders in total and I was the only chick except one other girl who was in the Pro Class with an actual hillclimbing bike. I did end up making it higher than several other riders though! My husband took this video and sadly you don't get to see my actual wipeout as it happens...I think he was a little more concerned about me than filming the action. __________________ Who is Zora? "That's hard to explain... Have you ever stood on the edge of an active volcano, with a tornado in it, during an earthquake? A lot like that... But with whiskey... And bunnies." -Benron

06-20-2011, 10:57 AM	#22604
zora the explora Joined: Mar 2009 Location: WI Oddometer: 1,703	There were about 250 runs total and I won "Best In Show" for my dismount. My second run. A little breakdown: What you can't see cuz of the grass..... I ended up doing a front flip, but OFF OF MY HEAD instead of my hands. I was bent backwards in half like some sort of circus contortionist. Ouch. Luckily I didn't snap my back or neck in two. __________________ Who is Zora? "That's hard to explain... Have you ever stood on the edge of an active volcano, with a tornado in it, during an earthquake? A lot like that... But with whiskey... And bunnies." -Benron

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06-20-2011, 08:23 AM	#22592
Machtig Gnarly Adventurer Joined: Aug 2008 Location: Monterey, CA Oddometer: 369	one respected member says run it loose, another run it tight. I need a consensus here folks I got 3000 more miles to go till I get home.

06-20-2011, 10:29 AM	#22602
mcwbyu82 WRR'er Joined: Mar 2010 Location: Utah Valley Oddometer: 158	Nice job! Any damage or does the hay make for a pretty soft landing?