Random pics (that you took) thread...

[Wolverine]

Hey fellas, anyone have any experience with the Yamaha R1's? I have a 2003 Yamaha RX10 sled with the R1 engine, it's got some blow-by on two cylinders. Hate to tear it out if there's some tricks to figuring out what I needs

I heard that the rings are known to carbon up in these sleds because of colder temperatures and people not letting them warm up before riding. Maybe some seafoam in the cylinders and do a compression test before/after as a baseline?

I bought this sled cheap, it's really nice and only has 5k in the odometer....

Do a compression check. If that left cylinder is down at all, suspect that stator (they call it a rotor) may have gone. The magnets are held in with plastic and that starts breaking, releasing particals of magnet throughout. It’s right under cyl one. I’ll show pics later.

 

[Dub11]

Almost got it.
And how you set up a tree stand in western Kansas

 

[Steve]

Almost got it. View attachment 152513
And how you set up a tree stand in western Kansas
View attachment 152514

I hear you can stand on a 5 gallon bucket and see for 10 miles out there!

 

[Dub11]

I hear you can stand on a 5 gallon bucket and see for 10 miles out there!

Pretty close. It's not as flat as some think, it just flipping treeless.

 

[Steve]

Pretty close. It's not as flat as some think, it just flipping treeless.

My brother used to live in Wichita. There are many rolling hills but about a tree every 100 acres. Dont think i could live there. I like the woods.

 

[Scotty Overkill]

@Wolverine is probably your best bet here.
I am not familiar with those. Do you have the ability to do a leakdown test, and see if it is coming from the bottom end and not a valve issue?

I found a guy at work who used to work on stuff like this, I'm gonna see if he'll give it a look. I don't have the tools and stuff to do that myself.....

 

[Scotty Overkill]

Scotty, I do have some with that motor. It ain’t good though. When I get home to my laptop, I’ll share pics. The stator/generators are known to explode and my nephews did last year. Is it the two left side (as on the bike)?
If you feel it’s a ring issue, buy some of this.
View attachment 152492
Boss uses it on occasion. It’s real thick so watch the directions.

I think its one on the left and one on the right. I gotta delve into it next week. I finally put the old Grabber into storage, so I now have room on my side of the garage to tinker with it.

 

[Dub11]

My brother used to live in Wichita. There are many rolling hills but about a tree every 100 acres. Dont think i could live there. I like the woods.

There is no way in hell I'd live out there unless I was a farmer with 1000 some odd acres.


Had to fix this, I live in town with 1/3 an acre lot lol.

 

[Steve]

Unless I was farming a 1000 acres I couldn't live out there either.

I get what you're sa...... Wait a minute!

 

[Dub11]

I get what you're sa...... Wait a minute!

I went back and fixed it for accuracy lol.

 

[Dub11]

So my cuzin posted these on Facebook.


There at hus dads place that 15 minutes from me
I feel like being a dick and go out and do some target shooting tomorrow lol

 

[ajschainsaws]

Work went well
View attachment 152386
View attachment 152387
View attachment 152381 View attachment 152384

Damm it I used too like your posts now seeing your construction going on at that beautiful spot speechless

 

[Wolverine]

I think its one on the left and one on the right. I gotta delve into it next week. I finally put the old Grabber into storage, so I now have room on my side of the garage to tinker with it.

Scotty, I'm not sure if the sled motor is identical. If you spend any time searching R1 stator failure, you'll see a lot of people experienced this. The rotor is behind this cover on the left side.


Remove that and you see this.

Cylinder #1 is right there. That large gear is part of the crank, it drives the rotor. Which is connected to that cover:

Just being held by magnetic pull. So with the rotor (or flywheel on most all other bikes) off you see the next series of pics.

 

[Wolverine]

@Scotty Overkill
The stator is connected by screws to the cover and the rotor goes over top.

You can see pieces of magnet and the failed plastic shroud. On the inside of the rotor, they should all be evenly spaced, and attached by pressed metal material, but some brilliant Yamaha engineer thought plastic would suffice.


Not so much.
If your sled has this motor, you may want to replace that rotor with the updated part, which does not use plastic. Those shredded pieces of magnet will stick to... the crank, cams, oil pick up screen etc. Not the aluminium block. They clog one small passage and you're fooked.

New part:

Old part:

 

[Bigmac]

Got a kfx450r to work on, the guy just bought it an was having major issues, the way he explained the issue I thought he was losing the big end crank bearing! But when I stated tearing it down, first drained the coolant, and there wasn’t any, less than a 1/2 pint! So I was starting to think it was just over heating from blow head gasket and no coolant! After taking off the top end....it had a 13.8-1 comp piston and he didn’t know it needed race gas!

 

[Steve]

Got a kfx450r to work on, the guy just bought it an was having major issues, the way he explained the issue I thought he was losing the big end crank bearing! But when I stated tearing it down, first drained the coolant, and there wasn’t any, less than a 1/2 pint! So I was starting to think it was just over heating from blow head gasket and no coolant! After taking off the top end....it had a 13.8-1 comp piston and he didn’t know it needed race gas!View attachment 152610View attachment 152611 View attachment 152612View attachment 152614 View attachment 152613

Holy detonation Batman!

 

[Bigmac]

Holy detonation Batman!

Exactly! It was bad! Worst detonation I have seen! Piston wasn’t that bad, but it was a forged JE, only looked sandblasted, the pits are 1/8 of an inch deep in places! It going to need a new head!

 

[Scotty Overkill]

@Scotty Overkill
The stator is connected by screws to the cover and the rotor goes over top.
View attachment 152560
You can see pieces of magnet and the failed plastic shroud. On the inside of the rotor, they should all be evenly spaced, and attached by pressed metal material, but some brilliant Yamaha engineer thought plastic would suffice.
View attachment 152558 View attachment 152559

Not so much.
If your sled has this motor, you may want to replace that rotor with the updated part, which does not use plastic. Those shredded pieces of magnet will stick to... the crank, cams, oil pick up screen etc. Not the aluminium block. They clog one small passage and you're fooked.

New part:

Old part:

According to people I've talked to, they aren't identical to the bike engine, but I'm not sure what differences they have. Gearbox being one major difference.....

I really appreciate all the info, I'll dig into it more hopefully in a week or so.

I certainly hope this isn't what's going on, because there ain't no way I'm buying a whole engine for this sled. It ain't worth that much to me.

 

[Nighthunter]

Starting to hunt well for a young dog

 

[bigbadbob]

Valve check on boss’s 250.
View attachment 152459
View attachment 152460

Just fixed a broken decomp thing on the end of the cam,,,