|
|
Post by oldgeek on Dec 10, 2023 19:06:39 GMT -5
I set out Saturday to do a few dragy runs. Power seemed to be down and temps were up a bit. I got it on the lift and found another snapped exhaust stud. I ended up spending the next couple hours replacing the stud and working with the pipe to get a better fit and matchup to the EX port. It involved using a torch to heat up the pipe header in order to tweak it just a bit.
Afterwards I decided to just go for a ride since it is likely to be our last warmish day for a while.
The dual curve CDI I ordered for the HPI iggy arrived in the mail. It is plug and play except for the curve selection switch. I will to wire a switch somewhere for the curve selection, maybe just one under the seat for now.
Ever since I installed the HPI ignition, I have a little difficulty starting the scoot, especially when it has not been running for a while. I have to let it turn over longer than I should have too. Any ideas on what is causing that?
|
|
|
|
Post by 190mech on Dec 11, 2023 5:15:56 GMT -5
May be a weaker spark at low RPM, try gapping the plug a bit closer (.018")..
|
|
|
|
Post by oldgeek on Dec 12, 2023 19:42:00 GMT -5
I tightened the plug gap up a bit, its even harder to start now LOL! Ill try a new plug tomorrow and if that does not help Ill try opening the gap up. It was 51°F here today, but it felt like sub zero to me. I did a few runs on the short test road and could tell it really likes colder weather. Decided to swap out the CDI with the new dual curve CDI that arrived from Treatland. I could not get it to start with the new CDI. I checked over everything several times and was about to hook up the timing light when I realized that I had bought the wrong CDI. I have the mini rotor setup, the CDI I bought is for the inner rotor  $75 shot to hell! No returns I am sure because I cut a couple wire ends off. |
|
|
|
Post by oldgeek on Jan 1, 2024 18:32:44 GMT -5
I ordered the correct two curve CDI from Treatland over the holidays, I had a chance to try it out today. It seems to pull off the line a bit harder but it is difficult to tell, I'll have to use the Dragy to know for sure. It will have to wait till the weather is a little better to do that.
|
|
|
|
Post by oldgeek on Feb 2, 2024 21:42:45 GMT -5
It is a bit cold today but I made a few laps on the longer test loop just to get out and ride. I have been needing to install a larger PJ because the air screw has to be all the way in or it starts to get hot. I went from a 50 to a 52 and the air screw is now out around a turn or so. There is still the slightly lean spot that sometimes shows up around 1/4 throttle.
I took it on a longer ride and had a blast. I got it just above 60mph coming down an overpass and it started cutting out, pretty sure it was seizing just a bit. I blipped the throttle a bit and it seemed fine so I went WOT for the 1/2 mile stretch back to the shop and it did it again. I rode down the short test road by the shop and everything seems fine, so not sure what was going on. currently using a 171 MJ so maybe need to go up a size?
|
|
|
|
Post by Lucass2T on Feb 5, 2024 10:52:20 GMT -5
It is a bit cold today but I made a few laps on the longer test loop just to get out and ride. I have been needing to install a larger PJ because the air screw has to be all the way in or it starts to get hot. I went from a 50 to a 52 and the air screw is now out around a turn or so. There is still the slightly lean spot that sometimes shows up around 1/4 throttle. I took it on a longer ride and had a blast. I got it just above 60mph coming down an overpass and it started cutting out, pretty sure it was seizing just a bit. I blipped the throttle a bit and it seemed fine so I went WOT for the 1/2 mile stretch back to the shop and it did it again. I rode down the short test road by the shop and everything seems fine, so not sure what was going on. currently using a 171 MJ so maybe need to go up a size? You can double check by taping off the air filter a little. |
|
|
|
Post by roxy on Feb 9, 2024 6:52:07 GMT -5
Hello, im trying to do something like this on my scooter. What did you use to mount the bracket onto the frame? Thoae clamps what are they called?
|
|
|
|
Post by oldgeek on Feb 9, 2024 7:13:31 GMT -5
Hello, im trying to do something like this on my scooter. What did you use to mount the bracket onto the frame? Thoae clamps what are they called? They are stage lighting clamps. I got them from Amazon, they come in different sizes. I think these are the ones I used |
|
|
|
Post by oldgeek on Feb 10, 2024 22:31:27 GMT -5
I took a couple rides today and played with the 2 curve CDI. From what I can tell I lose some power or low end pull when I switch to the 2nd curve that has more advance. I assume the first curve is best suited to my current setup?
I have also noticed the CVT does not downshift easily despite me having a stronger contra spring. I think it could be due to the very steep groove I have selected in the TD. The motor seems to stay locked up with the CVT when I let off the gas, could that be the reason it seems to seize slightly on a downhill if I get off of the throttle long? Standard procedure when I come off of a long WOT pull is to blip the throttle quite a bit but the seize feeling still happens on occasion anyway, thank goodness for cast iron cylinders!
Belt wear is way better with this current CVT setup, but I think it does not pull quite as hard now as it did with the CVT setup that does eat belts.
|
|
|
|
Post by oldgeek on Feb 11, 2024 20:06:00 GMT -5
 I guess I jinxed myself in the previous post! The belt let go on a ride today, I was headed to oldskool place for a visit, I made it to about 1/4 mile away from his place, did the push of shame the rest of the way there LOL. I looked at the belt before leaving the shop, I saw nothing wrong at the belt however something must have happened along the way. I cleaned everything up and it is ready for assembly. Time to make a few CVT changes. Resisting the urge to change multiple things at once I only serviced the CVT and moved the pins in the TD to the grooves that are not the steepest. I am hoping the TD will be willing to downshift easier using the different grooves. I am really pleased at the condition of the Malossi variator and associated parts, no damage or wear not even the ramp plate glide keys look worn. The Polini clutch looks great also. I can't seem to figure out how many miles I had on this new belt due to conflicting info in my notes. I am wondering if it would help the pipe breather a little better if I cut the stinger back to the weld, or is it a bad idea?  |
|
|
|
Post by 190mech on Feb 12, 2024 4:54:04 GMT -5
I went back to page 40 to look at the cut TWH pipe, if it is built like that cutting the outlet pipe off and enlarging it to a bigger one should make it run cooler. If it is a 3/4 ID, going to 7/8 or 1 will help..
|
|
|
|
Post by oldgeek on Feb 13, 2024 21:06:31 GMT -5
I put the CVT back together today. I went with the new belt, less steep TD grooves and lightened the rollers just a wee bit from 52.65tw to 52.41tw.
I only hit the short test road a few times to check it out. The difference is incredible. I guess as a fresh CVT wears in I loose performance slowly and dont really notice it much until I freshen everything up again. I really need to see what the draggy says because the butt dyno says wow! I gained about 4 MPH on the short test track and the front wheel comes up too easily again.
I noticed the motor mount bushings which were brand new on this build are now shot. I am looking into converting them to some type of urethane or something that will hold up better. Any ideas welcomed.
|
|
oldskool
Scoot Junior
125cc WC Dio/ZX50 Kit is here :) Now Honda or Kymco ??
Posts: 6 
|
Post by oldskool on Mar 9, 2024 20:07:16 GMT -5
So it is time to join the 120+ crew. Starting with a Kymco ZX50. Water cooled kit 125cc so it claims. Will do some math and get some pics of the start Moped and kit. Thanks oldgeek for the crazy idea to do this one  |
|
|
|
Post by aeroxbud on Mar 10, 2024 8:07:27 GMT -5
So it is time to join the 120+ crew. Starting with a Kymco ZX50. Water cooled kit 125cc so it claims. Will do some math and get some pics of the start Moped and kit. Thanks oldgeek for the crazy idea to do this one He is a bad influence. It didn't take long to plant that seed of big capacity craziness. 😉 |
|
|
|
Post by oldgeek on Mar 10, 2024 21:17:03 GMT -5
So it is time to join the 120+ crew. Starting with a Kymco ZX50. Water cooled kit 125cc so it claims. Will do some math and get some pics of the start Moped and kit. Thanks oldgeek for the crazy idea to do this one He is a bad influence. It didn't take long to plant that seed of big capacity craziness. 😉 Its Scooter crack, all I had to do is get him to ride it and he's hooked! |
|
$75 shot to hell! No returns I am sure because I cut a couple wire ends off. 
