I rode my new 3 stroke for the first time today.

vanillaice782
Edited Date/Time 3/9/2013 7:03am
I put a 9 oz flywheel weight on my 250 two stroke and it was magical. It basically cured my arm pump and it was still just as fast. It made it feel like a four stroke. I weigh 170 so the 250 is a little bit too much bike for me but it made it so much easier to ride. I recommend it to anyone. Only downside was that it did make it a little bit harder to slow down going into corners. But we all need to carry more speed in corners anyway, right? (sorry this thread isn't about yellow flags)

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exsarg
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exsarg 3/6/2013 9:22pm
3/6/2013 9:22pm
had the same one on my 08 yz 250. best 120 bucks i ever spent
zehn
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zehn 3/6/2013 9:25pm
3/6/2013 9:25pm
I've been thinking about putting a weight on my YZ125. Does anybody have any experience doing that?
SwapperMX
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SwapperMX 3/6/2013 9:41pm
3/6/2013 9:41pm
zehn wrote:
I've been thinking about putting a weight on my YZ125. Does anybody have any experience doing that?
Dude, you crazy !! Put it towards a big bore kit or a pipe if you dont already have one.
zehn
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zehn 3/6/2013 9:53pm
3/6/2013 9:53pm Edited Date/Time 3/6/2013 9:54pm
Got a pipe and silencer, and don't really want a big bore kit. The tracks up here tend to be really dry and silty. I'm hoping the flywheel weight will help with wheelspin.

The Shop

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observer
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observer 3/6/2013 9:54pm
3/6/2013 9:54pm
Very common addition to 250s motocrossers being made "woods built". Helps take some of the angry hit away.
Try a G2 throttle cam assy w/ the 400 lobe it comes with for even more controllabilty out of corners/techncial areas, & play with the c/shaft sprocket.
SwapperMX
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SwapperMX 3/6/2013 10:00pm
3/6/2013 10:00pm
zehn wrote:
Got a pipe and silencer, and don't really want a big bore kit. The tracks up here tend to be really dry and silty. I'm hoping...
Got a pipe and silencer, and don't really want a big bore kit. The tracks up here tend to be really dry and silty. I'm hoping the flywheel weight will help with wheelspin.
Use the clutch lever instead !!
vanillaice782 3/6/2013 10:06pm
3/6/2013 10:06pm
I wouldn't put one on a 125. A 250 is a completely different animal. You have to fight to keep your bike in the power and I have no shortage of power. I would get a big bore kit. I rode a ktm 144 and loved it.
Ross_Miller
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Ross_Miller 3/7/2013 6:17am
3/7/2013 6:17am
you can put steel plates in your 125 clutch and it will help and works like a light flywheel weight.
You will notice a difference if you aren't running steels today.
I have the KTM 150 with steel plates and it is so much more fun to ride than all the 450's i have owned put together.
Frodad78
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Frodad78 3/7/2013 7:11am
3/7/2013 7:11am
this is good to see, I have thought about getting a 250 smoker and doing the same since i'm only 165lbs. There was an MXA article a while back where Jody did the same to his YZ and sent his jug to PC for Mid Range porting. He too said it was like riding a 3 stroke. Awesome work man.
Knobbyjake
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Knobbyjake 3/7/2013 7:13am
3/7/2013 7:13am
I put a Steahly on my KX500 and it really helped. Great for hare scrambles and trail riding. Cool
IceMan446
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IceMan446 3/7/2013 7:44am
3/7/2013 7:44am
vanillaice782 wrote:
I put a 9 oz flywheel weight on my 250 two stroke and it was magical. It basically cured my arm pump and it was still...
I put a 9 oz flywheel weight on my 250 two stroke and it was magical. It basically cured my arm pump and it was still just as fast. It made it feel like a four stroke. I weigh 170 so the 250 is a little bit too much bike for me but it made it so much easier to ride. I recommend it to anyone. Only downside was that it did make it a little bit harder to slow down going into corners. But we all need to carry more speed in corners anyway, right? (sorry this thread isn't about yellow flags)

Did you have to run the spacer in between the cover with that one?
jmx411
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jmx411 3/7/2013 7:46am
3/7/2013 7:46am
I just say throw in a dip and have at it
vanillaice782 3/7/2013 9:14am
3/7/2013 9:14am
IceMan446 wrote:
Did you have to run the spacer in between the cover with that one?
No I didn't. The directions said as long as you have a stock cover you don't have to use the spacer and I didn't have any clearance issues. The install was really easy. You just need an engine lock up tool that you can get really cheap on ebay to prevent the piston from moving while you crank on the flywheel. I think next I'll try one of those throttle cams to smooth it out even more.
enketchum
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enketchum 3/7/2013 5:11pm
3/7/2013 5:11pm
I ride a lot of desert and used to race grand prix. I got my head decked instead of running a fly wheel weight. I love the power of a 250 but don't like the top end. Varner did the work. I have been interested in flywheel weights though.
jgilps617
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jgilps617 3/7/2013 5:14pm
3/7/2013 5:14pm
i always thought about getting one,but i like my angry snap when i crack the throttle to much.
vanillaice782 3/7/2013 7:34pm
3/7/2013 7:34pm
I love the snap too but it usually ended with me having horrible arm pump and jumping front end high looking like the squid that I am. I'm just trying to get as close as I can to the four stroke feel on a budget!
FGR01
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FGR01 3/7/2013 8:06pm
3/7/2013 8:06pm
Ross_Miller wrote:
you can put steel plates in your 125 clutch and it will help and works like a light flywheel weight. You will notice a difference if...
you can put steel plates in your 125 clutch and it will help and works like a light flywheel weight.
You will notice a difference if you aren't running steels today.
I have the KTM 150 with steel plates and it is so much more fun to ride than all the 450's i have owned put together.
YZ125 comes stock with steel plates.
dedi684
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dedi684 3/7/2013 8:08pm
3/7/2013 8:08pm
Awesome. I've had an 02,06 and now I have 2 09 yz 250's. Had a weight on the 06 but not the newer ones. Now I think I know why they beat me up. Gonna order one up.

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malachi177
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malachi177 3/7/2013 10:13pm
3/7/2013 10:13pm Edited Date/Time 3/7/2013 10:15pm
vanillaice782 wrote:
I put a 9 oz flywheel weight on my 250 two stroke and it was magical. It basically cured my arm pump and it was still...
I put a 9 oz flywheel weight on my 250 two stroke and it was magical. It basically cured my arm pump and it was still just as fast. It made it feel like a four stroke. I weigh 170 so the 250 is a little bit too much bike for me but it made it so much easier to ride. I recommend it to anyone. Only downside was that it did make it a little bit harder to slow down going into corners. But we all need to carry more speed in corners anyway, right? (sorry this thread isn't about yellow flags)

Great job vanillaice!!! Another one that's converted. Flywheel weights make a big difference. I have the Stealthy on both my 08 RM125 and 08 RM250. Anyone who says use a clutch instead is missing the point. The reason four strokes are so popular is because they're easier to ride, but also more tractable coming out of corners. Two strokes are notorious for major wheel spin when on the pipe, whereas with four strokes you can roll the throttle on and limit wheel spin. Flywheel weights make the bike more tractable, which helps make the bike hook up better. If you're spinning you're not moving forward as quickly as you could be.

You used blue loctite right???
vanillaice782 3/7/2013 10:29pm
3/7/2013 10:29pm
malachi177 wrote:
Great job vanillaice!!! Another one that's converted. Flywheel weights make a big difference. I have the Stealthy on both my 08 RM125 and 08 RM250. Anyone...
Great job vanillaice!!! Another one that's converted. Flywheel weights make a big difference. I have the Stealthy on both my 08 RM125 and 08 RM250. Anyone who says use a clutch instead is missing the point. The reason four strokes are so popular is because they're easier to ride, but also more tractable coming out of corners. Two strokes are notorious for major wheel spin when on the pipe, whereas with four strokes you can roll the throttle on and limit wheel spin. Flywheel weights make the bike more tractable, which helps make the bike hook up better. If you're spinning you're not moving forward as quickly as you could be.

You used blue loctite right???
That makes sense. When he asked about using it on a 125 I thought it sounded kinda silly because the power is manageable but even if that's the case it still smooths the power out for you and makes for better traction. I'm probably going to end up experimenting with bigger weights just to see how it changes the power characteristics.

When I was researching them I read some rumors that Tim Ferry used one on his YZ 250. Maybe I'll call into Pulp one night and ask Mathes (haha).

I didn't use loctite. I thought the directions had said not to use it so I've just been checking it religiously. I should have worked out an endorsement deal with Steahly because I would think now that two strokes are making somewhat of a resurgence and everyone has been spoiled by four strokes lately these flywheel weights are going to sell like hot cakes!
SwapperMX
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SwapperMX 3/7/2013 10:35pm
3/7/2013 10:35pm
malachi177 wrote:
Great job vanillaice!!! Another one that's converted. Flywheel weights make a big difference. I have the Stealthy on both my 08 RM125 and 08 RM250. Anyone...
Great job vanillaice!!! Another one that's converted. Flywheel weights make a big difference. I have the Stealthy on both my 08 RM125 and 08 RM250. Anyone who says use a clutch instead is missing the point. The reason four strokes are so popular is because they're easier to ride, but also more tractable coming out of corners. Two strokes are notorious for major wheel spin when on the pipe, whereas with four strokes you can roll the throttle on and limit wheel spin. Flywheel weights make the bike more tractable, which helps make the bike hook up better. If you're spinning you're not moving forward as quickly as you could be.

You used blue loctite right???
You also have to ask yourself what you are doing by putting extra weight on the end of your crank, and how that affects the power characteristics of your motor. 250 two stroke, for the average guy on a motocross track, great investment. A 125, whose power is seriously limited when comparing it to other bikes in it's class, I think you are mad to put one on. Keep new tyres on the back of it and hold it on.
GeorgiePorgie 3/8/2013 1:40am
3/8/2013 1:40am Edited Date/Time 3/8/2013 1:46am
Not to hi jack. But I have a boyesen ignition cover. There is no clearance between the weight and the cover so i have to use the stock plastic cover.

Bike won't turn over and the flywheel has a nice circular groove etching into the inside of that cover with one kick. 1/8 distance to the peg of a kick.

Is there a spacer kit to make clearance and have enough clearance between the shifter and cover ?
dedi684
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dedi684 3/8/2013 8:31am
3/8/2013 8:31am
Yes there are plastic spacers, just use longer bolts.
vanillaice782 3/8/2013 8:38am
3/8/2013 8:38am
GeorgiePorgie wrote:
Not to hi jack. But I have a boyesen ignition cover. There is no clearance between the weight and the cover so i have to use...
Not to hi jack. But I have a boyesen ignition cover. There is no clearance between the weight and the cover so i have to use the stock plastic cover.

Bike won't turn over and the flywheel has a nice circular groove etching into the inside of that cover with one kick. 1/8 distance to the peg of a kick.

Is there a spacer kit to make clearance and have enough clearance between the shifter and cover ?
This should take care of it. I guess the aftermarket ignition covers are a little tighter so you have to get a spacer.

Steahly Offroad Ignition Cover Spacer
dedi684
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dedi684 3/8/2013 8:46am
3/8/2013 8:46am Edited Date/Time 3/8/2013 8:51am
Exactly, that's the one I had on my 06. Actually I may have it still out in the shop. I had to use it on the bike with a boyesen cover, stock worked fine. Now i can't decide between a 9oz or 11oz. I believe dowdy ran real heavy weights on his rm's. I've got two 2009 yz 250's, think I might try the 11oz.
WhKnuckle
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WhKnuckle 3/8/2013 10:31am
3/8/2013 10:31am
I ran one for a while on my CR500AF and liked the way it made the bike hook up, but mine made the bike vibrate more (and it already vibrates some). I probably should have sent it back and gotten a replacement, that was my mistake. But it definitely made the bike less tiring to ride and more fun.
twosmoke30 3/8/2013 1:08pm
3/8/2013 1:08pm
WhKnuckle wrote:
I ran one for a while on my CR500AF and liked the way it made the bike hook up, but mine made the bike vibrate more...
I ran one for a while on my CR500AF and liked the way it made the bike hook up, but mine made the bike vibrate more (and it already vibrates some). I probably should have sent it back and gotten a replacement, that was my mistake. But it definitely made the bike less tiring to ride and more fun.
probably because its a big piston, there's less vibration on 250's
chump6784
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chump6784 3/8/2013 1:30pm
3/8/2013 1:30pm
zehn wrote:
I've been thinking about putting a weight on my YZ125. Does anybody have any experience doing that?
Last time my wife's rm 125 was at the mechanics he lathed down the flywheel. Don't know how much but it pulls harder out of corners now, there is no way I would add weight on a 125
LappedU
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LappedU 3/8/2013 1:55pm
3/8/2013 1:55pm
You can always gear taller that will take the hit out go up one tooth on the counter sprocket cheapest way to go!
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Spartacus 3/8/2013 2:04pm
3/8/2013 2:04pm
How do bikes turn with a heavier flywheel?

I found my CR500 aluminum conversion turned much better with a lighter 250 flywheel. Easier to lay over and wanting less to stand back up.

Post a reply to: I rode my new 3 stroke for the first time today.