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144 gearing?

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Just curiuos what gearng 144 guys run. I am assuming with the extra power and you are running a smaller rear sprocket allowing it to pull longer between shifts and the ned to shift every 2 seconds is sttretched out as well.

What go me thinking was the 4 strokes passing me on the berms and heading dow the straights and over the table top while staying in one gear. What the hell, how easy is that lol. I have to shift twice before that table top. So I wondered if the 144 made it more thumper like with taller gearing is all.

Thanks

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i built a 05 yz144. i didnt change the gearing. its still a 1/8th + liter motor. tiny. it pulled the stock gearing better, but i think you'll lose what you gained if you went down in sprocket size.

jmho.....

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Stock is 12/50 I run 12/51 but I prefer the 12/50.

KTM144 uses 14/49 gearing.

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KTM uses 14/49? Wow.... I thought their bikes were poweful.... but I didn't know they pulled that gearing.

13/51 might be better, I don't have experience gearing 125s but going from 12/49 to 13/49 on my 250 was well worth it at the track.

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I would think that you'll still be bangin 2 gears to hit the double. 2t's don't have that tractor like torque.

Now you know how I feel on race day. I am the only 250 in my class and the only 2T!

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im seeing more and more 2t's on the starting line lately.

i was at a race a few weeks back and a guy on a rm250 ran away from the rest of the experts and intermediates. 3 laps into the 5 lap race and he had 1/2 of the track on the next closest rider.

made my heart swell :ride: .

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Just shift up those 1 or 2 gears and feather that clutch till the cows come home. Don't worry it'll pull further, just use the clutch more and get her on the pipe.

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A guy in the YZ forum runs a 14/50 on his 144 and he says it pulls like stock. That is like a 12/42 or so.

Man, I am all about that!

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A guy in the YZ forum runs a 14/50 on his 144 and he says it pulls like stock. That is like a 12/42 or so.

Man, I am all about that!

Don't worry about what gearing a YZ runs, they are so different that its rediculous. YZ's have a lot more torque than a RM so they can pull lower gearing. And I like your sig.

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Ok good to know thanks for the insight Eric.

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Ok good to know thanks for the insight Eric.

If I were you I would run stock gearing on a 144, and get it ported for mid to top. The bigger piston is going to add bottom anyway, so with mid to top porting it should run real good.

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Don't worry about what gearing a YZ runs, they are so different that its rediculous. YZ's have a lot more torque than a RM so they can pull lower gearing. And I like your sig.

I bet the difference in torque between the 2 bikes isn't even a half ft/lb. I think internal gearing on the YZ is pretty much perfect and lets it be that much better in its final gearing. Just a thought:excuseme:

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I bet the difference in torque between the 2 bikes isn't even a half ft/lb. I think internal gearing on the YZ is pretty much perfect and lets it be that much better in its final gearing. Just a thought:excuseme:

Yea I totally agree, the YZ has the perfect gearing. I think the reason the YZ feels like it has more torque is because the better gearing. The YZ takes less clutch work than the RM, I bet a 144 RM has like the perfect power spread.

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Oh you mean gear box gearing right. I'll do the 144 and try a 13/51 combo. That is anbout the same as dropping 2 teeth from stock. EG says the RM is the bike that responds best to the 144. I don't know. A little longer pull would be nice though. Just a bit longer. RM has a 6 speed close ratio, lots of shifting going on.

The KTM uses a 14/49, heck RM copied the KTM motor in 04. I bet it will pull it.

I would do the mid top port though, that does make sense.

I burned my hand quite badly lastnight at the track helping some quadtards lift thier quad into a truck yesterday so I am down for about a month. Never got a thanks either. Freaking quadtards.

I was feeling good too, riding better than ever. Passing 450 flatbill posers. One of these days I'll be lapping like you two guys. :ride:

I lOVE north Carolina. Got a link to vids you you Eric?

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Oh you mean gear box gearing right. I'll do the 144 and try a 13/51 combo. That is anbout the same as dropping 2 teeth from stock. EG says the RM is the bike that responds best to the 144. I don't know. A little longer pull would be nice though. Just a bit longer. RM has a 6 speed close ratio, lots of shifting going on.

The KTM uses a 14/49, heck RM copied the KTM motor in 04. I bet it will pull it.

I would do the mid top port though, that does make sense.

I burned my hand quite badly lastnight at the track helping some quadtards lift thier quad into a truck yesterday so I am down for about a month. Never got a thanks either. Freaking quadtards.

I was feeling good too, riding better than ever. Passing 450 flatbill posers. One of these days I'll be lapping like you two guys. :ride:

I lOVE north Carolina. Got a link to vids you you Eric?

Yea I got a vid from a couple months ago.,http://www.trackactionvideo.com/video/, go on the page and click on video 4 on Tuscarora MX 5-18-08. My race starts 15 seconds into the video, I am the tall guy on the YZ250, with yellow gear.

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My son who is 15 , 145lbs pulls a 14/48 gearing on his yz144 , thats one tooth bigger on the front than STD. He Races against 250F and is always in the top 5 at the first turn.( On his 125 , he would be approx 10th against the same competition). I would have no hesitation dropping 2 teeth off the back sprocket if your rider is under 150lbs.

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