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03-18-2022, 10:50 PM | #1 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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Late 2021 TBR7 manufacturing problems
OK. There is no sugar-coating this. Maybe some people have gotten good crates from Tao. We did not. The list is not long, but the problems are bad.
The airbox snorkel and battery/airbox fitment seem like a good place to start. We discovered the snorkel problem immediately because we needed access to the carb for rejetting. That will be the first post. At first I thought it was the wrong snorkel or airbox. But the person that glued the snorkel to the airbox misaligned it badly. Here it is with lines to show the misalignment, causing the kinks in the snorkel when connected to the carb It is pretty obvous inside the airbox Next post is devoted to the battery install problems (airbox?) |
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03-18-2022, 10:56 PM | #2 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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Later on in the build, we tried to install the battery. We had no idea what we were going to encounter. The orange arrow points to the inadequate clearance. The red arrow points to the airbox screw that goes past the height of the battery. The green arrow points to a rogue green wire with no male connector to connect it to (presumably a ground wire, especially since it is near the - post on the battery).
Buying a new battery didn't make sense. So we cut some space. This means removing the airbox screw since it is long enough to hit the battery when reinstalled. |
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03-19-2022, 01:41 AM | #5 |
Join Date: Apr 2017
Location: Omaha, NE
Posts: 8,100
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This I do understand. Trying to video or take pictures of stuff while also working really does add a ton of time. That is why I didn't do videos of every single mod I did step by step. I showed some, and talked about the rest in detail simply because it took way less time.
That intake tube is by far the worst one I have ever seen. I thought my current Hawks was bad, but not any more.
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Hawk Information and Resource guide: http://www.chinariders.net/showthread.php?t=20331 2018 Hawk 250 - Full Mod list here. http://www.chinariders.net/showpost....62&postcount=1 2024 Royal Enfield Shotgun 650 https://chinariders.net/showthread.php?t=34124 |
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03-19-2022, 08:52 AM | #6 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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My son and I decided not to do anything about the snorkel for now. We assume it is choking the flow somewhat, but our rejetting and needle height adjustment was modest since we hadn't even started it and don't really know at this point what it needs. I posted the numbers somewhere here.
That rogue green wire with female plug connector must be a ground lead for something. And yet there is a small chance that connecting it to the battery negative post, or to the frame could fry something. Unlikely, but possible I guess. I think it must be connected to something on the other end, wherever that might be. Any ideas? |
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07-05-2022, 05:28 PM | #7 |
Join Date: Jul 2022
Location: Detroit, Michigan
Posts: 10
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Hello, first post. Just got a TBR7 from Tx Powersports, labeled as a 2021 model according to the plaque on swingarm...
Mine also has the "rogue green ground wire", anyone ever figure out where it goes? My bike has rear turn signals, horn, etc. But front turn signals and starter switch wont work The starter switch is "soft" ie, no feedback, click etc. I suspect these issues trace back to this ground wire needing a home |
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03-19-2022, 10:04 AM | #8 |
Join Date: Oct 2020
Location: Flower Mound Texas
Posts: 904
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That snorkel can be removed and repositioned pretty easy. Mine wasn't messed up but I've had it out and resealled. I have no idea with the battery. About the only minor issue with mine was a brake lever washer that didn't fit right.
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2021 Tao Tbr7 - "Lucille" Mods so far- Brozz swingarm, 21" front rim (Bridgestone Tw302 rear/Dunlop D606 front tires), Digital gauge cluster, pz30b pumper carb, after market hand guards, aftermarket brake and clutch levers, round fold away mirrors, Fly handlebars shortened slightly, 13t front sprocket 2009 Q-link Legacy 250 1982 Suzuki GS1100ES - "Jolene" |
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03-20-2022, 07:38 PM | #9 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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We will try cutting out the snorkel with a razor on the caulk/glue bead and clean it up for reinstalling. I hope we can get the kink out of it!
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03-20-2022, 07:44 PM | #10 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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brake light switch!
The brake light switch has a spring that should connect through a hole in the lever. Oh, there is a hole on the other side! I wonder what that it for!?
It is easy to drill a hole. Fixed. Gee. This isn't rocket science. I can't believe for a second that the people crating this stuff don't know how embarassing this must be for the manufacturer! |
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03-20-2022, 09:33 PM | #11 |
Join Date: Jan 2020
Posts: 277
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I guarantee you that even if they knew, they do not care. They already have your money. The notion of potentially affecting future sales does not occur to these types, or indeed a lot of similar types. Everything is about making that fast buck right now -- for as little as possible.
Us Chinese bike owners are just trained to expect it in advance, is all. |
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03-21-2022, 08:14 AM | #12 |
Join Date: Jan 2022
Location: Milwaukee, WI
Posts: 167
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Thumper you're making me feel like I won the lottery with my TBR7. The intake was kinked more than I liked. I softened it with a heat gun manipulated it into shape and held it there 'til it cooled. It worked well. What I did could never correct the severity of what you're dealing with on yours. I saw a video of a guy who used the sleeve of an empty plastic caulk tube and inserted into the intake to force it to open up and stay that way.
Embarrassed to say I couldn't get my battery out. I figured because it was of a no maintenance flavor, I just put the trickle charger on it and told myself worry about it when I have to replace it. I'm at 600 ft. I put a 38 and 110 in the carb. When I goose the throttle from idle in neutral it bogs. I'm thinking the 38 might be too much and try a 35?
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2021 TBR7D 17 front, 42 rear PZ30 Clone Milwaukee, WI |
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03-21-2022, 08:43 AM | #13 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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Quote:
We put a 38 in the TBR7. Not much time on it, so not sure if that's enough, but we shimmed the needle to...You can shim you needle by a couple mm with washer. That will probably fix the bogging issue. The retaining clip doesn't go back into the recess at the bottom of the slide after shimming, but the slide spring holds it in place, no problem. You just need a little richer off idle for that initial bogging. |
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03-21-2022, 01:01 PM | #14 |
Join Date: Jan 2022
Location: Milwaukee, WI
Posts: 167
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I have adjustableneedle set 4th notch down out of 5. I can move it down to last notch.
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2021 TBR7D 17 front, 42 rear PZ30 Clone Milwaukee, WI |
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03-21-2022, 01:42 PM | #15 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,613
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OH! Already on the 4th position and still stumbling off idle. Maybe the 38 isn't enough for your setup. Worth a try, but you will probably end up increasing pilot jet size to solve this. I don't think the main jet can be involved until maybe 3/4 throttle. Is the fuel screw out to ~3 turns? You are working with OEM PZ carb right?
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