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Post by jareeb on Feb 21, 2015 0:47:51 GMT -5
40s sound so good right now!! Lol
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Post by oldgeek on Feb 23, 2015 7:49:41 GMT -5
I worked most of the day Saturday and Sunday fitting a Overrange setup (more info about that here) and then tuning it. My best speed so far is just under 55mph. I am beginning to think that if I want to hit the 60mph mark, I will need taller gearing. With the 100/60-12" tires I am using, I currently have about 11.2:1 at the wheel. This thing is a blast to ride, and handles better than the 10" wheel scooters do IMO. The 10" wheel scooters are a bit twitchy to me at high speeds.  |
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Post by oldgeek on Feb 25, 2015 22:46:24 GMT -5
Current setup, and best so far:
1500 Short contra spring on a ball bearing base, steepest groove/3x5.5 & 3x10 rollers = 46.5 grams/9K @ 58.16
My next setup uses the same weights, but a heavier contra spring. I am using a Malossi red spring, It is the heaviest spring I have on hand. I am also using a BB base along with it. Even though it is a long spring, it fits with the BB base, and does not bind like some other long springs do. The rear pulley is now very hard to open by hand, as a matter of fact if I didn't have a trick I use to get the belt on I would never be able to get it installed.
I was running the scoot on the stand, and noticed the CVT was still shifting a bit before the wheel started turning, despite the heavy contra spring I have on there. I have been using a performance clutch with blue springs since I put this scoot together. I took it off and installed a bone stock clutch I had laying around. I am hoping a stock clutch will engage quicker, and take advantage of the torque this motor has on the low end.
I got it all back together, but it is pouring rain and way too cold to do any test runs tonight, so I did the only thing I could do.... I did some test launches in the warehouse! The launch is now scary powerful, at least for the first 10' that I can check. I cant wait to see what the rest is like tomorrow, I hope I didn't kill the top speed with the changes I have made.
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Post by iwannascoot on Feb 26, 2015 8:41:01 GMT -5
Hey, Oldgeek share:
"The rear pulley is now very hard to open by hand, as a matter of fact if I didn't have a trick I use to get the belt on I would never be able to get it installed."
I had a hard time getting my CVT back together because I couldn't keep the rear pulley open to get the belt on.
Billy
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Post by oldgeek on Feb 26, 2015 9:32:13 GMT -5
Hey, Oldgeek share: "The rear pulley is now very hard to open by hand, as a matter of fact if I didn't have a trick I use to get the belt on I would never be able to get it installed." I had a hard time getting my CVT back together because I couldn't keep the rear pulley open to get the belt on. Billy I do the cvt differently than most people do. First I tighten up the variator and make sure that it is tight and installed right. Then I put the belt over the front variator pulley and then I put the rear clutch pulley assembly on the belt and while simultaneously squeezing the pulley and pulling the clutch assembly to the rear using the belt to open it up. Once you get it open it's easy to hold it open then I carefully put it on the rear shaft taking care not to damage the needle bearing in the rear pulley which is easy to do. Sent from my SGH-T999 using proboards |
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Post by oldgeek on Mar 3, 2015 10:45:53 GMT -5
I am really struggling for some reason with this stock CVT setup. I cannot seem to get this scooter above 52 - 53 mph. I moved back to the short stock contra spring on a BB base to stiffen it up just a bit. And various weight rollers but it is just not helping much.
I also noticed there is side to side play in the crank, which is expected I guess because I polished the crank journals to a slip fit. But I also noticed there is the slightest play on the other axis that has me concerned. I don't remember what crank bearings I used on this build, but I hope they are not krapping out already.
I recently ordered a new shock for this scoot from RP. When will it get here? Who knows! I had a hard time finding one long enough to use on this build. The shock I ordered from RP has different length adapters you can buy for it. I also picked up a 40mm mount extender to go with it, for a total length of about 345mm. The long shock is needed because the case set I used has the shock mount moved to the rear and down from the original case set. I put a used, long shock from a 150 on for temporary, but it is already shot because it was meant for a dual shock setup.
I got tired of screwing with the CVT last night, and went for a 16 mile ride. This scoot is a pretty fun ride, although a little cramped because for now at least I have to sit on the front half of the seat so the shock does not bottom out completely. I am hoping when the new shock comes I will be able to slide all the way back on the seat so I will have more room, otherwise this scooter will feel cramped like the vino, and the zuma.
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Post by nelson on Mar 3, 2015 20:39:14 GMT -5
I have had issues tuning the cvt also on the 90. You have a hoca 43.5 crank and hoca 54mm cylinder? If so we have very similar set up. I am running v3 reeds and a 24mm carb with rs2 exhaust. I saw my best results thus far with the hoca vari. And smaller of the clutch bells. I think I was around 68 mph. The stock vari never did much for me. The or is great up to about 55 so far. All that was done wi th the 52mm. Just got the 54mm running. My gears are real tall through , you wpuld think would equal higher top speed. How does yours pull up to top speed? My 54 seems dead till 6k and then it rips. Haven't got to do top speed run yet. Just wonder what you have maybe we can compare notes. my exhaust timing is close to 190 and transfers at 130. That was using the base gasket that came with the cylinder. The compression colud be a bit higher as its around 165psi. but plenty of room as my squish is 1mm. I did sand the head down a bit and might need to take some more off. Can you give a run down on what you are running? I have a 100 main
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Post by oldgeek on Mar 3, 2015 22:08:17 GMT -5
I have had issues tuning the cvt also on the 90. You have a hoca 43.5 crank and hoca 54mm cylinder? If so we have very similar set up. I am running v3 reeds and a 24mm carb with rs2 exhaust. I saw my best results thus far with the hoca vari. And smaller of the clutch bells. I think I was around 68 mph. The stock vari never did much for me. The or is great up to about 55 so far. All that was done with the 52mm. Just got the 54mm running. My gears are real tall through , you wpuld think would equal higher top speed. How does yours pull up to top speed? My 54 seems dead till 6k and then it rips. Haven't got to do top speed run yet. Just wonder what you have maybe we can compare notes. my exhaust timing is close to 190 and transfers at 130. That was using the base gasket that came with the cylinder. The compression colud be a bit higher as its around 165psi. but plenty of room as my squish is 1mm. I did sand the head down a bit and might need to take some more off. Can you give a run down on what you are running? I have a 100 main Wow! We do have very similar setups. Same crank, same cylinder, same pipe, same vari. I have a hoca? reed cage with one .30 CF reed and one .35 CF reed, a spacer and a rear facing intake. The carb is a Dell PHBG 21mm with a 91 MJ. My clutch is stock. Ex duration is 183 xfers 130, squish is just under 1mm. I did a good bit of trenching the cases, and some port matching. Compression is around 165-170psi. I also noticed the best performance up to about 50mph was with the OR, it was very good actually. I have currently switched back to the Hoca vari and the stock pulley, and I still have not been able to get the same performance out of it that I had before I started testing the OR stuff. |
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Post by oldgeek on Mar 3, 2015 22:40:08 GMT -5
I found something strange tonight as I was changing the exhaust pipe. Gear oil all over the of the rear rim. The only place I can see that it could have come from is the gearbox vent tube. It looks just like the gearbox was overfilled, but I remember putting only 110cc of gear oil in it. I have not seen a drop anywhere until now. I did ride fairly hard today for a bit, but it is not like that is the first time I did that with this build. I guess tomorrow I will drain the remaining gear oil and refill it.
I decided that since I was having such a hard time with the CVT, that I should try something different, so I put the MHR team rep pipe on the scoot. It fit like a glove until I noticed the center stand would not fold up all the way so I took the center stand off. It sounds pretty nice, just slightly mx. I cant see the krappy tach in the dark, but it deff revs better with this pipe. I didn't take it far because of the gear oil thing, and I still don't have a CHT gauge either. I did notice the MHR pipe runs hotter than the RSII pipe, which never seemed to get very hot at all.
Tomorrow is supposed to be nice weather, but we have a full day at work, so I don't know if I will have time to fix, and ride it much.
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Post by niz76 on Mar 3, 2015 22:46:25 GMT -5
I know Sitticuss mentioned to me that even a little over 100cc and the gear oil may come out the vent tube? I had what proved to be a "freak occurance" on my 90cc when the gear oil came out all over the rear rim just like you described. I used a pyrex measuring cup to put exactly 100cc in and it hasn't happened again...
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Post by 90GTVert on Mar 3, 2015 22:56:39 GMT -5
I also noticed there is side to side play in the crank, which is expected I guess because I polished the crank journals to a slip fit. But I also noticed there is the slightest play on the other axis that has me concerned. I don't remember what crank bearings I used on this build, but I hope they are not krapping out already. Mine has axial play because of the slip fit setup. No radial play that I've noticed even after quite a few miles. |
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Post by oldgeek on Mar 3, 2015 23:09:36 GMT -5
I know Sitticuss mentioned to me that even a little over 100cc and the gear oil may come out the vent tube? I had what proved to be a "freak occurance" on my 90cc when the gear oil came out all over the rear rim just like you described. I used a pyrex measuring cup to put exactly 100cc in and it hasn't happened again... For some reason I thought it took 110cc, looks like about 10cc all over the rim! |
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Post by oldgeek on Mar 3, 2015 23:12:46 GMT -5
I also noticed there is side to side play in the crank, which is expected I guess because I polished the crank journals to a slip fit. But I also noticed there is the slightest play on the other axis that has me concerned. I don't remember what crank bearings I used on this build, but I hope they are not krapping out already. Mine has axial play because of the slip fit setup. No radial play that I've noticed even after quite a few miles. I will keep an eye on it I guess. If it gets bad enough I will change the bearings. |
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Post by nelson on Mar 4, 2015 18:28:36 GMT -5
I have had issues tuning the cvt also on the 90. You have a hoca 43.5 crank and hoca 54mm cylinder? If so we have very similar set up. I am running v3 reeds and a 24mm carb with rs2 exhaust. I saw my best results thus far with the hoca vari. And smaller of the clutch bells. I think I was around 68 mph. The stock vari never did much for me. The or is great up to about 55 so far. All that was done with the 52mm. Just got the 54mm running. My gears are real tall through , you wpuld think would equal higher top speed. How does yours pull up to top speed? My 54 seems dead till 6k and then it rips. Haven't got to do top speed run yet. Just wonder what you have maybe we can compare notes. my exhaust timing is close to 190 and transfers at 130. That was using the base gasket that came with the cylinder. The compression colud be a bit higher as its around 165psi. but plenty of room as my squish is 1mm. I did sand the head down a bit and might need to take some more off. Can you give a run down on what you are running? I have a 100 main Wow! We do have very similar setups. Same crank, same cylinder, same pipe, same vari. I have a hoca? reed cage with one .30 CF reed and one .35 CF reed, a spacer and a rear facing intake. The carb is a Dell PHBG 21mm with a 91 MJ. My clutch is stock. Ex duration is 183 xfers 130, squish is just under 1mm. I did a good bit of trenching the cases, and some port matching. Compression is around 165-170psi. I also noticed the best performance up to about 50mph was with the OR, it was very good actually. I have currently switched back to the Hoca vari and the stock pulley, and I still have not been able to get the same performance out of it that I had before I started testing the OR stuff. I assume you did not use a base gasket? I had best performance with the hoca using 6g sliders. Iirc I was in the upper 60mph range with my 52mm. Guess I will just have to build a hi rev 70 to use with the or now! what was the heaviest roller combo u used with the or? I have 8s in now. Did you get full travel out of your belt on front pulley? I did and was still around 55 |
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Post by oldgeek on Mar 4, 2015 19:34:20 GMT -5
Wow! We do have very similar setups. Same crank, same cylinder, same pipe, same vari. I have a hoca? reed cage with one .30 CF reed and one .35 CF reed, a spacer and a rear facing intake. The carb is a Dell PHBG 21mm with a 91 MJ. My clutch is stock. Ex duration is 183 xfers 130, squish is just under 1mm. I did a good bit of trenching the cases, and some port matching. Compression is around 165-170psi. I also noticed the best performance up to about 50mph was with the OR, it was very good actually. I have currently switched back to the Hoca vari and the stock pulley, and I still have not been able to get the same performance out of it that I had before I started testing the OR stuff. I assume you did not use a base gasket? I had best performance with the hoca using 6g sliders. Iirc I was in the upper 60mph range with my 52mm. Guess I will just have to build a hi rev 70 to use with the or now! what was the heaviest roller combo u used with the or? I have 8s in now. Did you get full travel out of your belt on front pulley? I did and was still around 55 I used a thin base gasket coated with copper spray. Below are some of the combos I tried and their results. I never did get full travel on the front pulley, there was always about 3-4mm left. The front pulley even fully closed would not push the belt any further so possibly a wider belt was needed? White Malossi contra spring, stock style groove/6x10 rollers = 60 grams/7000rpm @ 50.45 mph White Malossi contra spring, stock style groove/6x9 rollers = 54 grams/8400rpm @ 54.8 mph White Malossi contra spring, stock style groove/3x10 & 3x5.5 rollers = 46.5 grams/8400rpm @ 54.8 mph Yellow 1500 contra spring from autotech, stock style groove/3x9 & 3x5.5 rollers = 43.5 grams/8700rpm @ 55.92 mph Yellow 1500 contra spring from autotech, steep groove/6x5.5 rollers = 33 grams/9400rpm @ 50.9 mph Yellow 1500 contra spring from autotech, middle groove/3x5.5 & 3x7.5 rollers = 39 grams/9000rpm @ 53.13 mph White Malossi contra spring, middle groove/3x5.5 & 3x7.5 rollers = 31.5 grams/8800rpm @ 53.7 mph Yellow 1500 contra spring from autotech, middle groove/3x5 & 3x9 rollers = 42 grams/ RPM?? @ 55 - 57.5 mph 1500 Short contra spring on a ball bearing base, steepest groove/3x5.5 & 3x10 rollers = 46.5 grams/9K @ 58.16 |
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