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#46 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Thanx mt77, very useful advice. I'll get on it.
BTW what is that red connector that is not connected to anything?
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#47 |
Join Date: Jun 2007
Location: Reno, NV
Posts: 89
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Probably the 'make it run right' connection ;-)
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#48 |
Join Date: May 2021
Location: Central Florida
Posts: 80
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TominMO: The red connector is the diagnostic port. You can get a Honda 6-pin to OBD2 adapter cable to interface with the ECU (not to be confused with other 6-pin adapters like the KTM’s use). I use an ELM327 clone WiFi adapter with Car Scanner app on my iPhone and it works pretty well so far. I haven’t had as much time to fiddle with it as I’d like, but I’ve been able to do things like verify that the throttle position sensor was zeroed, etc.
Braindead0: Man, I wish that were true! LOL
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2021 Lifan Xpect EFI 2012 DF250rtc 1982 Yamaha Virago XV750 1982 Honda Twinstar CM200 |
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#49 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Wow, thanks again mt77!
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#50 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Well, long story short, it was apparently removing the evap canister that caused my issues. When I reinstalled it, it started up immediately, no more cranking or giving it gas. Changed the oil, started the bike up to circulate said oil; immediate starting again.
Besides draining from the bottom plug (17mm socket), I also drained the left side where the screen is (24mm or 15/16" socket). I wanted to check blockage. The screen was fine. (Never did drain the gas BTW; always do the cheap and easy troubleshooting first.) Went for a short ride (immediate startup again) and it performed perfectly. Even took it up to 8K RPM for a second to check fuel delivery. Also no popping on decel, which it did just a little, after removing the canister.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#51 |
Join Date: Jun 2007
Location: Reno, NV
Posts: 89
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Typically evap cans have a vacuum line connected to them, this is so they can 'regurgitate' the collected fuel into the intake... If you removed the evap and didn't cap off the vacuum line, that might explain the issue.
Good that you found the cause! And good job on the troubleshooting... |
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#52 |
Join Date: May 2021
Location: Central Florida
Posts: 80
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Great to hear the positive results! Sure beats having to mess with the fuel tank.
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2021 Lifan Xpect EFI 2012 DF250rtc 1982 Yamaha Virago XV750 1982 Honda Twinstar CM200 |
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#53 | |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Quote:
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#54 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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17-tooth front sprocket on its way. Already have a better chain for it, and a chainbreaker.
Just bought this box for it: https://www.amazon.com/Yescom-Motorc...318428&sr=8-12 It has a quick release that just leaves the mounting plate on the bike.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#55 |
Join Date: May 2021
Location: Central Florida
Posts: 80
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Nice box. I like the mounting tray setup.
When you put on the 17-tooth sprocket the front cover will be a little tricky to get back on. Will help if you can get it up on a stand and rotate the rear wheel a little to rotate the sprocket and chain to where it will clear. There are rear sprockets available for these bikes too if you want to gear up even higher. It is a bit more involved, but was worth the trouble for me.
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2021 Lifan Xpect EFI 2012 DF250rtc 1982 Yamaha Virago XV750 1982 Honda Twinstar CM200 |
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#56 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Thanks again mt. Helpful info.
Lifan Xpect sprockets available on Amazon below. Do not know about fitment on other brands, but if they are CG motors, I would think they would work. Front 15 and 17 tooth available: https://www.amazon.com/JT-Sprockets-...78&sr=8-1&th=1 Rear Lots of options: https://www.amazon.com/JT-Sprockets-...09&sr=8-1&th=1 I suspect any available aftermarket chain is gonna be better than the stock one. Just to be safe, I would not order one that was a lot cheaper than the average. I go with brand names I recognize.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself Last edited by TominMO; 10-16-2021 at 11:12 AM. |
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#57 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Sprocket ratios
........15..........17 34....2.27.......2.00 35....2.33.......2.06 36....2.40.......2.12 38....2.53.......2.24 39....2.60.......2.29 40....2.67.......2.35 41....2.73.......2.41 42....2.80.......2.47 43....2.87.......2.53 44....2.93.......2.59 45....3.00.......2.65 46....3.07.......2.71 stock 47....3.13.......2.76 50....3.33.......2.94
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself Last edited by TominMO; 05-17-2022 at 04:18 PM. |
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#58 |
Join Date: May 2021
Location: Central Florida
Posts: 80
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The JTR810 series fit the rear hub. Add a decimal for the tooth number. I installed a JTR810.38 and have the original 15t on the front. Initially I had the 17 and 38 installed but the gearing was too tall for the engine’s power band. I’m pretty happy with the 15/38 (2.533), but I may try to go just slightly taller with a 17/41 or 17/42 down the line.
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2021 Lifan Xpect EFI 2012 DF250rtc 1982 Yamaha Virago XV750 1982 Honda Twinstar CM200 |
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#59 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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Thanks for straightening me out on the rear hub! I amended my two posts, and the one in the Lifan sprocket sticky too.
My rear sprocket is a 46, and if the front is a 15, that gives a pretty low ratio. The 17 should be an improvement for street. Once riding it, I will decide if I want higher; better top end with a slightly higher 1st gear would be great.
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2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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#60 |
Join Date: Sep 2021
Location: De Soto, MO
Posts: 1,925
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1. How is the durability of the stock sprockets?
2. How long would you expect the JTs to last?
__________________
2021 Lifan Xpect--sold 2022 Lifan KPX 1972 Honda CT90--The Carrot 1969 Honda CT90--The Tomahto Cheesy is the WDK (workplace drama king). Now retired. Nope, back in the saddle. Climate: The Movie https://www.youtube.com/watch?v=A24fWmNA6lM How our government really works https://www.youtube.com/watch?v=QjadCd0VRBw Question all authority.....think for yourself |
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