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Post by motoxracer98 on Aug 4, 2017 13:17:04 GMT -5
I made a post a while back maybe some of you saw it I bought 2016 Dongfang RACER SST 50 . I had some issues when I bought with the bill of sale etc. (Refer to my other post for all that...)
Anyway it hasnt been driven AT ALL the entire month I've had it nor have I done anything to the motor despite me having a 100cc kit sitting here I bought for it 3 weeks ago I finally got the bike straight and in my name legally. I took it for the initial ride today and OH-MY-GOD 😮 this thing will really go. It smokes my tao tao 50 with 80cc Bbk with exhaust filter variator redone etc ...
I can't figure out why I mean its suppose to be the same engine is it possible this may be bored out bigger by accident? You can tell Bunche exhaust note and the vibration the motor seems a little bigger and more powerful than my little tao tao scoot,Even with the BBk.
Today I got it up to 52 mph on a straight stretch GPS off two different sources and my wife behind me on a vehicle and it pulls very steep hills at 37-40mph no problem the same hills on my tao tao I would only be at 25-27 mph if I'm lucky .
Someone please explain. Engine code on the SST is(JL-139QMB) my tao tao thunder with bbk is a 1p39qmb
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Post by ryan_ott on Aug 4, 2017 13:21:38 GMT -5
Someone stuck a 2T in there when you weren't looking...
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Post by motoxracer98 on Aug 4, 2017 13:28:51 GMT -5
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Post by 90GTVert on Aug 4, 2017 13:48:15 GMT -5
The P or lack of doesn't mean much with these engines. Technically means it's horizontal, but some include it and some don't. Some people come up with sort of conspiracy theories that P motors all are this or that (69mm valves, big bore), but it's not true. Many are, many aren't. The first couple of letters before the 1 is usually a manufacturer initial or code.
If it's going 50+MPH GPS on flat ground and pulling hills at 30-40MPH stock, it's hard to believe it's a standard 39mm bore. That's what the 39 is for in the engine code, but I think most of the stuff with 44 and 47mm bores that have been found didn't have 44 or 47 in their engine codes. Prob won't know for sure without pulling it apart enough to measure the bore.
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Post by tortoise2 on Aug 4, 2017 14:03:20 GMT -5
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Post by motoxracer98 on Aug 4, 2017 15:05:10 GMT -5
So theres no difference at all in the motors or cases? I don't understand it myself I'm not complaining. I'm going to have to have to pull the head to find out what's going on I'm curious it just runs too good. I remember being able to tell a HUGE difference when I first took off it caught me off guard and kind of scared me a little because I was on gravel I could tell this was definitely something a lot now powerful than what I've been riding it . I wish you guys didn't live so far away is like for someone else to ride it to see what they think
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Post by lostforawhile on Aug 4, 2017 20:20:31 GMT -5
Mine is the same way, not quite as fast, but the only thing I changed was to go to 5 gram rollers and the glixal variator, which shouldn't affect it that much. Now I can keep up with 45 mph traffic in town, My guess is it has something to do with compression, I know mine had dire warnings about only using high octane gas
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Post by motoxracer98 on Aug 20, 2017 20:04:31 GMT -5
For those who thought i was stupid i think i figured out why the bike is faster . tonight i went to put on my 50mm bbk and look what i discovered ....   |
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Post by motoxracer98 on Aug 20, 2017 20:16:36 GMT -5
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Post by motoxracer98 on Aug 20, 2017 20:35:54 GMT -5
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Post by AtariGuy on Aug 20, 2017 21:36:12 GMT -5
Merry christmas, you had a bbk already!
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Post by 90GTVert on Aug 21, 2017 8:32:12 GMT -5
Unfortunately, it's really tough to know the story since you got it used from a private party. Could be something they did. Could be something a dealer did. Could have came out of the factory/crate that way. Would be interesting to know exactly what the case is.
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Post by gsx600racer on Aug 21, 2017 8:52:24 GMT -5
Unfortunately, it's really tough to know the story since you got it used from a private party. Could be something they did. Could be something a dealer did. Could have came out of the factory/crate that way. Would be interesting to know exactly what the case is. I agree. |
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Post by aeroxbud on Aug 21, 2017 8:53:25 GMT -5
That's a bonus  |
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Post by diynuke on Aug 21, 2017 11:52:13 GMT -5
well that bbk is great for in the netherlands xD markings on it that says it's 49cc ;D
here sometimes they check the cylinder if the scoot goes too fast so this is a bit less obvious ;D
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