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Post by Goosey on Jul 26, 2010 21:26:23 GMT -5
I got some other valve settings to try from someone with the A9, that fits what you suggested, I'll give that a try when I get another feeler guage tommorow, if I can find one that small. Mine doesn't go low enough.
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Post by Goosey on Jul 27, 2010 21:34:59 GMT -5
Hehe, ok without any other modifications from stock besides the 12 gram sliders, with the A9, I adjusted the valves to .002-.0015 and the clack was reduced to a click. I took her out for a little ride, remember starting point of 55-57 top end, I hit 63 before the light ahead of me turned red and I had to stop and head back. Granted I was on a 45mph section of highway, :paranoid: and I am pretty sure it had a little more to give  . It sounds smoother after warming up. I think I will thicken the oil aqnd see how she rolls. Next up, CVT. |
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Post by 90GTVert on Jul 28, 2010 8:48:09 GMT -5
Sweet! Wasn't the initial goal 60MPH after everything or am I mistaken?
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Post by Goosey on Jul 28, 2010 9:36:33 GMT -5
Yes, the initial goal was 60mph, lol. And I still have that clutch, with the kidNme pulley, and the variator to put in. Now that is designed to run the belt higher on the variator, so more power at lower RPM? I could use a little less take off, so may get some 15g sliders instead of the 12's. Tempting to pull the cam again to see what that pulley can do on it's own, hmm.
My daughter asked me yesterday " So you guys, like, break perfectly good scooters just so you can fix them?"
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Post by stepthrutuner on Jul 28, 2010 10:29:50 GMT -5
I certainly hope that valve clearance works out for you. Those speed numbers are most impressive. The clatter is good news now. If it goes away (the clearances close up) it's time to recheck the clearances before you lose power or burn a valve. Caution you don't develop a speed addiction, Goosey. ;D
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Post by 90GTVert on Jul 28, 2010 14:04:25 GMT -5
Not really more power at lower RPM but more speed capability at the same revs if the belt gets more travel. You'll have to experiment with weights once it's all installed to get the best speed and acceleration. I think I'd just leave the cam in and keep it tuned to rev a little more. I tried going back to my stock cam in the 50 and it more or less just made me mad that I wasted my time. lol These GY6 engines just seem to die out on power up top without a bigger cam and it's not worth the power loss to keep the revs down a little IMO.
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Post by Goosey on Jul 28, 2010 22:15:14 GMT -5
:rant: So I'm almost to work today, finaly hit the one stretch to check my speed, check for police ;D Give her some throttle, and I here a ping, :censored: the valve noise gets louder and scary right? and I'm going 55 but no faster. So it's still running so I get to work and worry all day, it fires right up, which I wasn't expecting if the valves were screwed up right? Get home, seemed to run good, just sounded like, that big motorcycle, PapPap thing. :scared:
I took it apart again everything looked good, clearance was still good, changed out to the stock cam, and realize, the bolt I had screwed into the end of the emission control tube was gone :lol: Apparently the A9 blew it out and down the road.
I went to the hardware store and found a bracket that fit the thing and removed the stupid tube. As long as It's out, I put in the new clutch and variator setup, without the A9 to see what that does on it's own. I did manage to take my scooter apart, replace the cam, and instal the CVT parts in 3 hours though. PITA That includes undoing and redoing the trunk lighting, I think that is the most putsy part of the whole thing :tongue: I think I am getting a system down. I can compare results anyway, A9, CVT, and combined to see if they compliment each other.
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Post by stepthrutuner on Jul 28, 2010 22:39:10 GMT -5
Gosh, wish you could have found the missing plug sooner. You're getting that wrench twisting down pretty good. :clap: ;D
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Post by 90GTVert on Jul 28, 2010 22:44:29 GMT -5
Kudos for all the testing and experimenting. It takes lots more work, but it is pretty interesting to see what results you get with each mod.
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Post by Goosey on Jul 29, 2010 18:37:50 GMT -5
Update on the CVT change's. Kindof dissapointing but some improvement. This is with the longer bando belt, 115mm variator, and the kidnme pulley, 1500 springs in the clutch. Usual top end varies 55-57, with 55 holding steady, I did get to 58 holding steady with no drop. Has an interesting hummm to it. The 12 gram sliders are good with this settup, I will see if I feel the same when I get the A9 back in.
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Post by 90GTVert on Jul 29, 2010 21:25:59 GMT -5
That's really not bad. +3MPH criuse. Considering it sounded like you didn't get a full run before, and the results with the A9... you should see 65-70MPH now! Not 70MPH cruising, but still it's fun to get those top speed numbers. ;D
:rockon:
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Post by Goosey on Jul 29, 2010 22:50:25 GMT -5
I think I was still gaining speed when I had to stop, so we shall see what the combination does, ...to be continued
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Post by 90GTVert on Oct 13, 2010 18:42:57 GMT -5
Any updates after more use? New top speeds? ;D
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Post by scooterrebel on Oct 14, 2010 12:11:17 GMT -5
I'm very interested in knowing too. I have a guru friend that is not sold on a cam without a stroker crank installed. Sounds to me like you had great success with it. Knowing how the rest of it goes would be nice.
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Post by 90GTVert on Oct 14, 2010 12:36:38 GMT -5
Not sure why you would need a stroker crank to make use of a "bigger" cam. Stroker motors do have different characteristics that can make different cam profiles work better for them, but that doesn't mean cams ONLY work with them.
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. It sounds smoother after warming up. I think I will thicken the oil aqnd see how she rolls. Next up, CVT.
