fergulious
Scoot Member
Posts: 59 
Location: Thomasville NC
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Post by fergulious on Nov 8, 2016 14:54:08 GMT -5
what would i expected to pay for a base model 2t i mean i alway liked riding 2t dirtbike which i know is different but correct me if im wrong ive heard they no longer make 2t scoots!? but yeah im game
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Post by humanshield on Nov 8, 2016 18:57:04 GMT -5
Well, they're in demand so prices are generally higher. But I've seen a few around here for under $400 Eventually I'll probably snag one to go along with my existing 2 stroke stable  |
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Post by tortoise2 on Nov 14, 2016 15:38:05 GMT -5
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Post by jaga4life on Jan 3, 2017 10:59:11 GMT -5
Just installed one after having a 50mm for about 100 miles. I felt more comfortable with a 47mm. Only a tiny difference in performance from what i can tell.
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Post by dachurchpcguy on Mar 3, 2017 19:17:53 GMT -5
I've done three as of this week. It's not about speed, it's all about the hill climbing torque.
1) My 2015 Taotao ATM50 has 770 miles on it. The PO put the 47mm kit in as soon as he got home and rode it for 500 miles until it stopped running. It turned out to be a simple valve adjustment, they were tight as a drum. I've had 270 trouble-free miles with it. I have buried the speedometer on this one going down hill, that's somewhere around 50mph. This is my daily driver.
2) My 2009 Veken hybrid has zero miles on it since the upgrade, I'm in the process of building it to suit my needs. This will become my daily driver.
3) I just put one on my daughter's 2014 Taotao. It's a HUGE torque improvement. I went up a hill during a test drive and didn't have to use WOT where I would have with the 49cc. She rides a lot more than I do, it's her only means of transportation.
All of these scoots use bone stock carbs and exhaust.
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Post by humanshield on Mar 3, 2017 19:28:35 GMT -5
I've done three as of this week. It's not about speed, it's all about the hill climbing torque. Bingo! However, everything equal, the 50mm kit begins to degrade in performance simply because the stock head, intake and carburetor simply cannot flow the air it wants to efficiently. Volumetric efficiency decreases if all you do is keep upping displacement without also upgrading the rest of the air flow path. A torque monster.....for only a few hundred rpm. Put a head capable of letting the 50mm kit breath, and a few other breathing improvements to accommodate the extra airflow and it will walk away from the 10cc smaller engine (naturally) Also in a headwind and launches are improved by displacement increases. My 50mm scoot has no problem maintaining 35+ even up relatively steep inclines. |
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Post by humanshield on Mar 3, 2017 19:32:45 GMT -5
Just installed one after having a 50mm for about 100 miles. I felt more comfortable with a 47mm. Only a tiny difference in performance from what i can tell. Being comfortable is worth a lot. I'm getting very close now to 5,000 miles with my 50mm kit and it's still going strong. I think the vast majority of 50mm BBK failures are not the fault of the piston size so much as the installers abilities. Especially related to tuning and jetting. Just an opinion. Albeit a very educated one  |
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Post by dachurchpcguy on Mar 3, 2017 20:40:16 GMT -5
I've done three as of this week. It's not about speed, it's all about the hill climbing torque. Bingo! However, everything equal, the 50mm kit begins to degrade in performance simply because the stock head, intake and carburetor simply cannot flow the air it wants to efficiently. Volumetric efficiency decreases if all you do is keep upping displacement without also upgrading the rest of the air flow path. A torque monster.....for only a few hundred rpm. Put a head capable of letting the 50mm kit breath, and a few other breathing improvements to accommodate the extra airflow and it will walk away from the 10cc smaller engine (naturally) Also in a headwind and launches are improved by displacement increases. My 50mm scoot has no problem maintaining 35+ even up relatively steep inclines. Every upgrade has come complete with matching head, rocker arms, and A9 camshaft. The local dealer tried to sell me the standard 47mm jug kit. I don't understand how they think that would work very well. I may end up with a 20mm carb on my Veken if I don't like the performance on hills. My short test drive felt like the improvement was good enough. Maybe a wide band O2 sensor could verify my mixture is alright. Ultimately EFI would be the best solution but the ROI is a bit whacked. They've recently started putting EFI on snow blower engines, perhaps that will drive the price down on some components, who knows. |
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Post by jaga4life on Mar 4, 2017 8:10:20 GMT -5
Just installed one after having a 50mm for about 100 miles. I felt more comfortable with a 47mm. Only a tiny difference in performance from what i can tell. Being comfortable is worth a lot. I'm getting very close now to 5,000 miles with my 50mm kit and it's still going strong. I think the vast majority of 50mm BBK failures are not the fault of the piston size so much as the installers abilities. Especially related to tuning and jetting. Just an opinion. Albeit a very educated one We have had a few nice days around 50 degrees so iv been able to ride the scoot alot more. The more i ride. The better it gets. I have been able to hold it wot and hit 46 on a flat road. I wish i was able to take a video. |
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Post by dan50 on May 13, 2017 1:55:00 GMT -5
I'm installing a 47mm BBK. I have a question. I've got the oil rings identified, but which is the top ring and the 2nd ring? One ring is black and one is silver. According to the engine manual, there is a difference in shape.
This is a Glixal 47mm BBK kit.
Note: It's easier than I thought to put a BBK on. Not too hard at all. As I took each assembly off, I put it in a freezer bag with the spacers and all nuts & bolts (so I don't lose anything and I can identify them easier when I put it back together).
I also used my variator locking tool to prevent the engine from moving while it's torn apart (that way everything is still timed correctly when I put the A-9 cam in).
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Post by 90GTVert on May 13, 2017 8:20:52 GMT -5
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Post by dan50 on May 17, 2017 22:48:18 GMT -5
I installed a Glixal 47mm BBK on my Dongfang 4t. Mechanically, it was really easy to do, and I took my time being careful (not to lose parts or mess something up). This scoot MOVES now! It's hard to keep it at slow speeds. That could also be because of the way I tuned my CVT last Summer. I kept tuning the CVT until I got the variator to reach full range at 24mph to 25mph. That way the engine could stay in it's powerband and accelerate smoother with no bogging. I didn't touch the CVT after installing the BBK. The reason I mention this is my previous top speed was 42mph. Now with the 47mm BBK installed, I got up to 46mph (GPS verified) with no wind, and flat road. Below is a pic of my GPS showing 46mph which I did for a while, not just a short burst.  4mph gain just from the BBK install. I have 5 gram rollers in the variator now, but I'm going to try 6 gram rollers and see if any change. |
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Post by tortoise2 on Jun 21, 2017 8:39:22 GMT -5
Kymco failure at around 3500km [2175 miles]. |
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Post by 90GTVert on Jun 23, 2017 7:51:17 GMT -5
Kymco failure at around 3500km [2175 miles]. From that thread : "Got a theory as to why she broke. There is a squeeling noise/noise of metal ringing which probably means that the bearings are dry, but the oil level always was and still is normal. So my guess is that the oil pump/oil delivery broke and the bearings quickly (She first made noises yesterday, driven about 10 kilometers with it since) gave up. Not the BBK`s fault in my opinion, but I will check the oil system soon. "IF the oil pump quit working, even a stock engine will fail. |
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Post by motoxracer98 on Jul 22, 2017 21:45:30 GMT -5
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