what parts to get a smooth power band?
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Thread: what parts to get a smooth power band?

  1. #1
    Member evaneyeball's Avatar
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    what parts to get a smooth power band?

    im getting my motor built top and bottom. i want as smooth a power band as possible. before i broke my case and realized my motor was toast it ran super strong and felt like i was riding a 4 stroke. i dont like a crazy kick you in the gut power band i like it smooth and this is my first rebuild. so i think i have v force reeds (old so dont think theyre 3's) a 68 mm bore and a pro x piston. ct ported the cylinder and LED is relieving the exhaust bridge (dont know what that does so if you know can you tell me what that does) and has a small 23.5 cc dome. should this be a good setup for a smooth power band?

  2. #2
    Senior Member acecarlos's Avatar
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    Evaneyeball:

    "relieving the exhaust bridge"..."i want as smooth a power band as possible"..."should this be a good setup for a smooth power band"....???

    Really these are questions 'Best' answered by the person/shop doing the build. While you will get answers here, they won't reflect what your builder is doing, and the end results from his work.

    I suggest you call your Builder, tell him what you want & expect back on your build, and ask all the questions you need answered...that will give you a direct connection to your parts, build and builder.

    Carlos
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  3. #3
    Member evaneyeball's Avatar
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    Quote Originally Posted by acecarlos View Post
    Evaneyeball:

    "relieving the exhaust bridge"..."i want as smooth a power band as possible"..."should this be a good setup for a smooth power band"....???

    Really these are questions 'Best' answered by the person/shop doing the build. While you will get answers here, they won't reflect what your builder is doing, and the end results from his work.

    I suggest you call your Builder, tell him what you want & expect back on your build, and ask all the questions you need answered...that will give you a direct connection to your parts, build and builder.

    Carlos
    im just looking for another opinion by someone who has run some of these parts

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  5. #4
    Senior Member matuus's Avatar
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    smooth is setup. porting. pipe. no way 2 say what u got-get. listen to the man.


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  6. #5
    Senior Member 2ndmoto's Avatar
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    Generally speaking of you want smooth, you need torque. Good ways to increase torque is by increasing bore size, compression and/or stroke. Port layout and pipe also play a major role.

    A few ways to smooth things out is to increase intake tract length, gearing, flywheel weights, carb size, ignition. It has been a long time since I have rode a CT cylinder. The ones I did ride seemed a bit pipey.

    Arlan is a good choice. Talk with him about what you want and he will get you to your goals

    Best regards
    -Jason
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  7. #6
    Member evaneyeball's Avatar
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    Quote Originally Posted by 2ndmoto View Post
    Generally speaking of you want smooth, you need torque. Good ways to increase torque is by increasing bore size, compression and/or stroke. Port layout and pipe also play a major role.

    A few ways to smooth things out is to increase intake tract length, gearing, flywheel weights, carb size, ignition. It has been a long time since I have rode a CT cylinder. The ones I did ride seemed a bit pipey.

    Arlan is a good choice. Talk with him about what you want and he will get you to your goals

    Best regards
    -Jason
    thank you jason. this is my first two stroke and i rode a 250ex for a trip realised it didnt have enough power (i hadent ridden a lot in a while) got a 400ex rode it for about 6 months and got a 250r. first bike with any power at all. so i want my first two stroke to not scare me off of ever riding a two stroke.

  8. #7
    Senior Member The Norm's Avatar
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    My boys both ride mildly ported stock cylinders with a fmf fatty pipe and a 38mm airstriker carb. They are 12 and 13. They are able to control the power with no problem at all. Both cylinders are set up at 13.5-1 compression. They have a fairly smooth power band, but still pull very hard. This last summer they were drag racing each other when a Raptor 700 and Yfz450 pulled up to race. Those 4 stroke fellas were pretty embarrassed when they found out that two kids spanked them.
    What pipe do you have? The fmf fatty and ESR trx5 pipes are excellent "all around " pipes. They may not get you to max hp for your porting, but they will be smooth.
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  9. #8
    Member evaneyeball's Avatar
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    Quote Originally Posted by The Norm View Post
    My boys both ride mildly ported stock cylinders with a fmf fatty pipe and a 38mm airstriker carb. They are 12 and 13. They are able to control the power with no problem at all. Both cylinders are set up at 13.5-1 compression. They have a fairly smooth power band, but still pull very hard. This last summer they were drag racing each other when a Raptor 700 and Yfz450 pulled up to race. Those 4 stroke fellas were pretty embarrassed when they found out that two kids spanked them.
    What pipe do you have? The fmf fatty and ESR trx5 pipes are excellent "all around " pipes. They may not get you to max hp for your porting, but they will be smooth.
    i have pretty much the same set up i have a cr500 38mm carb, a fmf fatty and age is about right too. and if it has a crazy power band im not allowed to keep it

  10. #9
    Senior Member american opel's Avatar
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    smaller carb will give you more bottom end.rad valve reeds better low mid,esr5 is a good pipe porting and compression is a must.
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  11. #10
    Senior Member acecarlos's Avatar
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    It's actually a shame. With all the misinformation being posted by a couple, what I stated above and copied here applies even more; "While you will get answers here, they won't reflect what your builder is doing, and the end results from his work"...

    Carlos
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