|
Post by scootnewb on May 10, 2018 10:51:21 GMT -5
Well at 93 main 33 pilot, I had it idling a little high. I thought it was good and it rode without any back fires or stalling out at stops. Perhaps because the idle was so high? But I thought when I revved it on the stand it sounded like it was going to back fire. See video. So I thought I'd try a 96 it was the next biggest size I had. I also tried a different air filter.
Video of 93 / 33
Video of 96 / 33 ( I wasn't able to test ride this cause the seat broke)
|
|
|
Post by scooterted on May 10, 2018 11:32:41 GMT -5
They sound good to me. I do hear it think about dieing though. Idle sounds a little slow, expeciallh the 2nd vid. usually idle around 2000 rpm i think.
My scoot doesnt like low idles (my wifes otoh is just fine with them). It can idle slow, but It stalls when i let off the throttle with a low idle. In fact. When i bought it there was a very fine line between a running engine, and the rear wheel not spinning, new clutch springs solved that. My wifes scoot is totally happy with an 1800 rpm idle. Mine likes around 2300.
What parameters are you using to set your main? I use an app on my phone that can do 0-30mph acceleration tests.
|
|
|
Post by scootnewb on May 10, 2018 12:39:08 GMT -5
They sound good to me. I do hear it think about dieing though. Idle sounds a little slow, expeciallh the 2nd vid. usually idle around 2000 rpm i think. My scoot doesnt like low idles (my wifes otoh is just fine with them). It can idle slow, but It stalls when i let off the throttle with a low idle. In fact. When i bought it there was a very fine line between a running engine, and the rear wheel not spinning, new clutch springs solved that. My wifes scoot is totally happy with an 1800 rpm idle. Mine likes around 2300. What parameters are you using to set your main? I use an app on my phone that can do 0-30mph acceleration tests. The idle mixture screw is 1 1/2 turns out. The needle is in the stock position. I upped the idle speed screw a little. With 96 main and 33 pilot. the video is long and boring but you can get an idea of how the idle is still kind of off and there is some detonation type sound that comes from the exhaust when revved. I don't know what that indicates. Perhaps you might know. Unfortunately, after putting in the 96, the seat was too damaged to attach to the scoot. It is taking forever to upload this video....
|
|
|
Post by FrankenMech on May 10, 2018 15:16:49 GMT -5
|
|
|
Post by scootnewb on May 10, 2018 21:36:46 GMT -5
OMG. That is some crazy 'sick'level of modding.
Do you think my scoot is misfiring in those clips? I'm starting to wonder.
|
|
|
Post by scooterted on May 11, 2018 7:06:15 GMT -5
I listened to your clips yesterday several times. And just now in the car on the way to work. My observations of the 3 videos. 1. Slight distortion of videos sound while revving. Normal. 2. Individual pulses from the performance/loud exhaust. Normal. 3. Individual pulses from the performance/loud intake. Normal. 4. Valves clicking (possibly amplified by the audio, mechanical noises are easily distorted like that). Normal/have you checked valve lash? 5. Occasional idle droop when returning to idle. Normal on my scoot occasionally, expecially with low idle. If it were mine. 1. I would get a cheap tach. Set best idle anywhere under 2500 (may have to replace clutch springs) www.amazon.com/dp/B0049IFX56/ref=cm_sw_r_cp_apa_i_mDy9AbS37FVVA2. Download an acceleration app. Tune for best accel. play.google.com/store/apps/details?id=com.mtorres.racingtester 3. Ride. 4. Profit.
|
|
|
Post by FrankenMech on May 11, 2018 19:08:51 GMT -5
I am with ted on this one. But then we are both nuttier than squirrel poop!
My carb mods are based on many years of experience with carbs. The standard scoot carb configuration is totally asinine.
I usually build things for functionality.
|
|
|
Post by scootnewb on May 12, 2018 2:08:50 GMT -5
Thank you guys. I really appreciate you taking the time to listen and diagnose. I took a break from the scooter yesterday after realizing I was OCD-ing on it.
I ordered the tach and have the app installed. As soon as the plastic body parts arrive so I can mount the seat/bucket with full support I'll run some time trials. I haven't checked the valve lash since installing the bbk and it was good. I'm using the stock head so I used the clearance specs specified on the plate. Between .05mm - .03mm
I'm thinking about dropping in a cam too. Might as well right? I gotta take a look at the valves so I'll be in there anyway.
|
|
|
Post by scootnewb on May 13, 2018 7:12:56 GMT -5
I put back on the Uni Filter. When I went out to start it, it would back fire. I was like WTF. I thought it was flooded so i waited and tried to start it again without giving it any throttle. Still back fire. I removed the little air filter and pu back on the Uni, took the boot off the spark plug and put it back on. It started up. LOL It runs good. Not sure if it could run any better. Very happy.
|
|
|
Post by scootnewb on May 14, 2018 17:22:52 GMT -5
2nd day in a row started and rode no problem. Now that it cruises at 40mph, I have to work on the brakes.
Any suggestions on a good brake upgrade?
|
|
|
Post by FrankenMech on May 15, 2018 2:32:51 GMT -5
Front disc brakes and a rear drum seem to work OK for most scoots.
|
|
|
Post by scootnewb on May 16, 2018 7:25:45 GMT -5
Cool.It seems the front brake kind of rubs and the rear squeaks. I guess some adjustments along with a new drum and pads should resolve that and it will stop better. I Have never done brakes before time to binge watch/read tutorials.
|
|
|
Post by tocoo on May 16, 2018 10:27:48 GMT -5
I Have never done brakes before time to binge watch/read tutorials. Me neither, can you share the tutorials, especially the videos
|
|
|
Post by scootnewb on May 16, 2018 10:37:47 GMT -5
|
|
|
Post by jackrides on May 16, 2018 11:31:41 GMT -5
A couple drum brake tricks. Sand the drum lightly crossways, maybe 180 grit. Saw 2 or 3 diagonal grooves across the shoe linings - Not into the shoe itself. Try not to breathe the dust, wear a mask.Be sure there are No fingerprints on the brake surfaces! While the shoes are out, check that the pedal (lever) linkage works freely.
|
|