New JL250P from Tejas!
 

Purchased a Jl250P/Roketa MC-113 about 2 weeks ago, and riding has brought about a TON of questions!! But glad to have found a forum with Chinese Motorbike riders like myself!! :hi:

Welcome to here! NSTMIKE just joined us recently, from Houston, Texas, with the same bike. I know Austin is not too far from Houston--you guys should try to get together and compare 'notes.' I think you two are the very few who have joined us with that same bike in the past few years!

http://chinariders.net/showthread.php?t=14459

Yes sir!

:thanks:

Hey BB250! I just bought my JL a few weeks ago, in Houston. Did you buy yours brand new or used? I'm assuming since you said 113 that you have the twin cylinder dual exhaust model? Mine is the second version, the single cylinder single exhaust version.

Welcome to the forums. I'm pretty sure we are the only recent JL owners here, the older ones do not seem to have stuck around very long.

POST SOME PICS and stay active!

:D

I bought it brand new! Its a 2011 but it had 0 miles on the clock so i consider it brand new! And yes indeed it is the dual cylinder, dual exhaust model! Quick question, does your speedometer seem to be off? Around highway speeds (60 ish) mine is wrong by 10+ mph.. It was actually your posts that made me decide to join! That and you have one helluva Spyder (spelling?)!! :)

Also thanks for the welcomes guys! Much appreciated!

I'll add another welcome! Thanks for joining us.

Welcome; we are glad you joined us. :hi:

https://scontent-lax.xx.fbcdn.net/hp...17&oe=5573FF9E

That's awesome, and yes it is spelled Spyder :tup:

I'm not exactly sure on the speedo, but you may be right... I let a friend take mine for a ride and he mentioned he thought it may be off a bit.

How are you liking yours so far? Any issues? Have you owned other bikes? Mine seems to be working well and I'm enjoying it... first bike I've ever owned.

Stick around and post some pics!

I've been dealing some kinks here and there, but nothing too major. Other than the fact that it leaks gas but only when I fill up. But it's probably because I comoletely top it off. One thing that really rustles my jimmies, is my gas tank rattles!!! But only loud enough for me to hear it! But overall, I really enjoy it! As far as previously owned bikes goes, I've mostly owned dirtbikes and a few mini crotch rockets! One thing I'm really considering is trying to swap a Cmx450 engine into this tiny thing! More power, but not an unbearable amount! Any other suggestions that could boost performance are greatly appreciated!! :tup:

Remove your tank and install some rubber washers at the fittings. Rattles and vibrations drive me crazy.


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That's what i was planning on doing, but I want to wait until I can dedicate a full day/weekend to removing all the bolts and applying locktight and rubber washers where needed. I also saw someone that had strips off rubber running down the bottom of the tank near the frame, I guess that'd work if it was thick enough! But thank you for your suggestion! Is it normal for some of these bolts to be finger tight? One of the bolts that holds the tank down, under the seat, was EXTREMELY loose and the other one was about finger tight. Same with the bolts on my battery terminals!

Yes loose bolts are very common on all China bikes. Like you said above take a day to remove, apply Loctite and tighten every bolt you can see. At the same time you should go over all your electrical connections as well to make sure they are tight.


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All really good suggestions. I've been meaning to do the same to mine. In fact, BB, my gas tank was missing a bolt entirely!

Best of luck with yours, and please keep posting as you make upgrades.

Well... Devoting a weekend to working on the bike almost went down the drain... The chain popped off while I was on the highway! Scary stuff!! But I at first thought the transmission was shredded, none of the gears worked and all I heard was metal on metal grinding, but it was a slight relief to find out that it was only the chain! I have from now until midday Sunday to take the bike apart and fix everything that I find wrong with it! I'm not sure if I should post pictures here or in a new thread? What do yall think?

LET THE COUNT DOWN BEGIN!!

WHOA! Not good. Hopefully you're safe and the bike is ok. How/why would a chain pop off?!

Maybe start a new "build thread" and post pics etc. I am thinking about doing the same to cover the things I've been doing and will do moving forward. I'm very interested in seeing your progress, as we share a very similar bike.

Best of luck :tup:

Heres a little teaser from my adventures today! ;)

Are these bikes' back wheels as easy to move forward or backwards as easy as the enduros? Was the chain stretched to beyond useful/need a new one?

The chain came off due to the adjusters not being tight, but yes it is fairly easy to adjust! It was almost the exact same as all my previous dirtbikes would've been adjusted. Most people use a rear axle stand to adjust it but I had no problem leaving it on the kick stand. Just checked the distance between the axle and swingarm mount on both sides!

There's hashmarks on both sides of the swingarm that help get the axle mostly lined up, but it's always a good idea to check by measuring!

The chain seems fine for now, but I will most likely replace it fairly soon so I have an excuse to buy a new sprocket! :yay:

Good info :thanks:

Does your bike have the EGR doodad? Since my bike has dual exhaust, I had 2 of them but they weren't hooked up to anything! The tubes from the egr units were just tucked up under my gas tank, there's also a connector near my seat that isn't hooked up to anything.. Still trying to figure out what it could possibly be! I definitely recommend taking off all the plastics and making sure EVERYTHING is hooked up!

And I also have the carbs running wide open, no airbox hooked up.. I've noticed a decrease in performance. And by "decrease" I mean at WOT it tops out at 7K rpms and it just feels really laggy. I'm assuming it's because it is now getting too much air and not enough fuel? I figured the jets were designed to be used with the restriction of the air box. Can anyone verify this for me?

I suspect you are correct. I suggest you install the next size larger main jet, and see if engine performance improves. If so, continue installing the next size larger main jet until the performance stops increasing. ;)

What are you using for air filters?

Well it seems to be better, I took the gas tank off and found I had a vacuum leak! Plugged the hole and it seems to be doing great now! But I did end up putting the box back on until I can get a couple Uni filters and bigger jets! But is there any size jets you could specifically suggest (main and pilot)?

I was just running the carbs with no filters just messing around, but I know it's not good for the engine so I went ahead and tossed the box back on!

You either need to install the original air box, or add external air filters. If you ride the bike without air filtration, you will add dirt to the fuel/air mixture entering the engine. This dirt will damage the intake valve and its valve seat, causing the valve to recede into the cylinder head. :ohno: You can only experiment with carburetor jets after you have installed a good air filtration system. ;)

Start with two sizes bigger than stock for starters.

Interesting. Was your EGR bolted up on your exhaust pipe, close to where it bolts up to the engine? That's where mine is and there's definitely a tube/hose attached to it. I'll be taking off the plastics soon to check on stuff, I'll let you know where the other end goes on mine.

Also, my bike has no air box. I do have a small filter attached to the end of my carb. Was yours different? Pics?

:tup: