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Post by aeroxbud on Sept 27, 2020 15:08:24 GMT -5
I found the 35% springs were still not enough. And had a much better start with 55% springs.
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Post by oldgeek on Sept 27, 2020 16:01:22 GMT -5
I see upgraded variators in your future As do I! Lol! So I'm looking at the variator and the rear pulley. Now here's something interesting. Word of caution, I can really overthink a problem, so if the rambling gets too crazy, disregard. Lol. Do scooter companies restrict the rear pulley as well? Noticed when I was measuring up CVT that the belt does not want to go very far into rear pulley. Tried shoving belt into the open pulley to see if travel would reach outside of variator. It doesn't seem to so I also wonder if Adly used to short a belt to limit range of CVT. Of course I'm doing this by hand, so massive errors abound, I'm sure. That's what the sharpie trick is for right? 😉 Anyway, the possibilities have occured to me that I may have to change rear pulley as well, and perhaps the belt size as a result. For now, it takes the ever elusive 878. Got a couple of Naraku spares in case needed. Also, nearly every part on this bike is stamped JET-50. Hopefully that will help narrow a few things down while shopping. this looks a bit narrow. It is normal for the Minarelli style pulleys to have that ridge at the bottom. Springs, are you talking about clutch or contra?
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Post by Deleted on Sept 27, 2020 16:30:33 GMT -5
I found the 35% springs were still not enough. And had a much better start with 55% springs. Yep, I am headed there next. Wanted to see if the 35% would get it there, but I'm a give the 55% a shot.
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Post by Deleted on Sept 27, 2020 16:34:35 GMT -5
As do I! Lol! So I'm looking at the variator and the rear pulley. Now here's something interesting. Word of caution, I can really overthink a problem, so if the rambling gets too crazy, disregard. Lol. Do scooter companies restrict the rear pulley as well? Noticed when I was measuring up CVT that the belt does not want to go very far into rear pulley. Tried shoving belt into the open pulley to see if travel would reach outside of variator. It doesn't seem to so I also wonder if Adly used to short a belt to limit range of CVT. Of course I'm doing this by hand, so massive errors abound, I'm sure. That's what the sharpie trick is for right? 😉 Anyway, the possibilities have occured to me that I may have to change rear pulley as well, and perhaps the belt size as a result. For now, it takes the ever elusive 878. Got a couple of Naraku spares in case needed. Also, nearly every part on this bike is stamped JET-50. Hopefully that will help narrow a few things down while shopping. this looks a bit narrow. It is normal for the Minarelli style pulleys to have that ridge at the bottom. Springs, are you talking about clutch or contra? Yeah, I was asking about the pulley. Good to know that is normal. Didn't have anything for reference. Couldn't find a decent photo on good to compare to. Thank you for the assist! 👍 oh by springs, I meant clutch springs. As for contra, that is stock. I do have the Malossi torsion controller on the contra which seems to add just a touch more tension.
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Post by Deleted on Sept 27, 2020 16:37:04 GMT -5
Need to machine off that stupid restrictor nubbin or seek a straight sleeve of proper dimensions..What is its ID,OD and length?Perhaps we can find a replacement.. Oh yes! That variator boss is going bye bye. When I first pulled that thing apart, I only expected to find a washer. Surprised to see it was a solid piece. Debating on whether to just go ahead and grab a Multivar, or just order a new boss.
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Post by Steve B on Sept 28, 2020 9:58:24 GMT -5
If you add the multivar you will have to remove the electric starter clutch so you can get the deepest low gear other wise you will take off in second gear. Another option is you can keep the electric starter and add a spacer plate on the cvt cover. This would allow you to keep the electric start but the kick start will no longer work. It's one or the other deal.
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Post by Deleted on Sept 28, 2020 12:01:51 GMT -5
If you add the multivar you will have to remove the electric starter clutch so you can get the deepest low gear other wise you will take off in second gear. Another option is you can keep the electric starter and add a spacer plate on the cvt cover. This would allow you to keep the electric start but the kick start will no longer work. It's one or the other deal. Yeah, I'm seeing that from shopping around. What is really interesting is that the stock boss on this thing is 45mm which is the same length as the Malossi 2313052B drive hub. From what I can gather, Adly uses the same components for their 50cc and 90cc units. Measurements that I'm getting on stock parts seem to confirms this: Variator diameter ~95mm Dive Boss - 38mmx18mm OD Rear Pulley ~120mm Clutch - 113mm Its like the transmission was built to accommodate the models with 90CC motors. Some fairly weird part sizes compared to whats in the literature or on the net.
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Post by Deleted on Oct 3, 2020 17:08:15 GMT -5
Interesting thing to note. I was getting a weird hi-lo thing going on at take off even with the 50% clutch springs. Engine would rev high, clutch would engage, then there's a drop in rpm and slight bog followed by high rpm take off.
Turns out that the extra pressure exerted by the torsion controller wasn't allowing to belt to return to the top of the rear pulley. It was, as many here have said, like starting in 2nd gear. Took the controller out and no more bog. Accelerates perfectly now.
Gonna give it a week without the controller. I'm not sure if it will be much different, but I am curious to see what the effect on hills will be.
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Post by Deleted on Oct 17, 2020 14:36:16 GMT -5
Interesting thing to note. I was getting a weird hi-lo thing going on at take off even with the 50% clutch springs. Engine would rev high, clutch would engage, then there's a drop in rpm and slight bog followed by high rpm take off. Turns out that the extra pressure exerted by the torsion controller wasn't allowing to belt to return to the top of the rear pulley. It was, as many here have said, like starting in 2nd gear. Took the controller out and no more bog. Accelerates perfectly now. Gonna give it a week without the controller. I'm not sure if it will be much different, but I am curious to see what the effect on hills will be. Well I stand corrected. It was the restrictor on the variator boss after all. Added a Naraku speed variator boss @ 18x37mm to replace the stock restricted 18x38mm boss. Added just under 1mm in shims to make up the difference. Now this thing jumps off the line. Over the last two weeks also noted that I wasn't really able to hold speed on hills without the torsion controller. Put is back on the nick and now everything seems the be working and playing nicely together. Gonna get these rollers dialed in today and tomorrow, and that's it til I have time off around Xmas to consider BBK. Thanks again to everyone for all the helpful advice.
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Post by aeroxbud on Oct 17, 2020 17:22:39 GMT -5
Just ride it for a bit and enjoy it. Good plan. 👍
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Post by Deleted on Oct 17, 2020 18:12:09 GMT -5
Just ride it for a bit and enjoy it. Good plan. 👍 That is exactly the plan! She's running right, and I don't wanna be the guy that fixes stuff until it breaks.😉
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Post by Deleted on Oct 24, 2020 12:19:26 GMT -5
Okay, things are getting interesting. Pulled cover off today. Just making sure everything is happy a week on. Belt looks good. CVT box is hot, but not overly so. Not a ton of belt dust in there. Everything looks pretty happy.
The RT is absolutely flying along over the last week. Hit new speeds and am very happy with it. While doing my check, I noticed that I don't seem to be getting full travel with the belt. Pretty obvious ringwhere it's been riding at high speed. Makes me wonder what might be holding it back.
Variator boss is no longer the issue. Made sure when I was shimming that variator could close completely. I figure it could be the 5.5 weights are quite heavy enough, or perhaps my rear pulley sheaves don't completely open. That might mean the torsion controller is too much, or could be the grooves on the torque driver.
It also occurred to me that perhaps the Adly 878 belts are purposely a little too short, but I think If that were the case, I'd see a lot more wear and tear.
Well, here goes the sharpie trick on both the variator and rear pulley. Let's see where we end up. Will post some before and afters.
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Post by Deleted on Oct 24, 2020 12:24:00 GMT -5
Before
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Post by Deleted on Oct 24, 2020 13:13:40 GMT -5
Well, we certainly aren't getting full travel. Not sure if it's the weights or sheaves. Here's the variator: And not the greatest shot, but here's the sheaves. Marks are gone, so it looks like belt is traveling all the way down. Maybe it's the grooves. Hmm. Is it the most important thing in the world? Not really. I'd just like to know what's going on. That is likely a project for another weekend.
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Post by aeroxbud on Oct 24, 2020 15:20:30 GMT -5
Chuck a set off heavier weights in to see what they do. Perhaps about a one gram.
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