New purchase questions -2006 Roketa 200cc DB-06

[Landsvw]

Thanks! I will add, these bikes are kind of still being produced and sold - in Asia! The CG100 and CG125 is essentially this bike! So, for example, my left side cover is a brand new CG125 side cover and I got the set for 19$ from China (the other side doesn’t fit as the CL100 has that high exhaust, so I repaired the old side cover for the right side). And, many of the other parts can be gotten from China and Indonesia especially, and they are either OEM Honda parts or knockoffs. My guess is that, there are also Chinese knock off bikes of this bike too, over there. Probably can’t be sold over here due to emissions etc; same old story... but it’s at least a tie in to the Chinese bike forum and all the cool things you guys do too!

[humanbeing]

Originally Posted by Landsvw

... many of the other parts can be gotten from China and Indonesia especially...

Sanyang (SYM) used https://zh.wikipedia.org/wiki/%E9%87%8E%E7%8B%BC125
to build a model that exactly as CB125. U may add Taiwan to parts list. https://family.saycoo.com/thread-249380-1-1.html

[Landsvw]

Here’s wiki info:

In Pakistan it is still in production by Atlas Honda Ltd. The Pakistani version resembles most of shape of original CG125. Two other variants, CG 125 Dream and CG125 Deluxe are also available with some improvements, the later one has 5 speed gearbox, front disc brake and wider rear wheel.

In the UK, the CG125 is popular with learners due to licensing laws which allow a rider to operate a 125 cc motorbike with L plates by completing a Compulsory Basic Training (CBT) course.[1]

Due to its design success, several direct copies of the CG125 have sprung up (mostly from Taiwanese and Korean manufacturers), such as the Sym Wolf Classic, Kymco Pulsar 125, Hongdou CG125, Champ Commuter, Warrior Dispatch.

In Brazil, due to emission laws from 2009, the engine has been redesigned with an overhead camshaft (bore and stroke also changed from 56.5mm x 49.5mm to 52.4mm x 57.8mm). Due to Euro 3 emission laws the Honda CG125 has been replaced by the fuel injected CBF125 in UK and Europe since 2009. Other manufacturers made overhead camshaft versions of CG125 engine with same piston bore and stroke (56.5mm x 49.5mm) to comply with Euro 3 emission laws and they are widely available.

[Landsvw]

Also, guys, if this thread needs to be moved to the ‘non Chinese’ forum, feel free to do so. Maybe name it something else too? Anyway if it’s ok here, I’m ok with it ��

[NzBrakelathes]

Did it originally have the OHC engine?

[Landsvw]

It did originally (and still does) have the overhead cam engine. If I remember correctly, some time in the 1970’s Honda’s engineering department sat down and sketched out a pushrod engine specifically to be used in 3rd world countries where maintenance was going to be an issue. So, evidently the pushrod engines, at least after Honda became successful, are a retro design and came after the ohc engines with the timing chain and etc.

[Landsvw]

Here’s a link for Sanyang. Looks like the 150 is essentially the Honda 125/100 CB, CL, etc from way back. Also their history is really interesting. Definite tie-ins to Honda. Thank you for the info!

https://www.alliancepowersports.com/...torcycles.html

[Landsvw]

Hi Weldangrind,
I actually can see that button, but again, it limits my file sizes to 19.5 whereas before they could be really large. It actually reduces them when I try it. I dunno...

[Weldangrind]

Originally Posted by Landsvw

Hi Weldangrind,
I actually can see that button, but again, it limits my file sizes to 19.5 whereas before they could be really large. It actually reduces them when I try it. I dunno...

I've asked the Admin for his opinion; I'll let you know what I learn.

[JerryHawk250]

Originally Posted by Landsvw

Hi Weldangrind,
I actually can see that button, but again, it limits my file sizes to 19.5 whereas before they could be really large. It actually reduces them when I try it. I dunno...

That's strange. I post most of my pictures as attachments and find they are large. I post jpg files though. 97.7 KB

[Landsvw]

The weather warmed up today and so took the bike for a pretty good ride. Has a top end bog... will figure that out, maybe needle needs raised or dropped. Has a small oil leak from right behind the cylinder. Shoot darn. Will have to remove the engine, or lift the cylinder up a bit or take it off and regasket, and/or get some Indian Head shellac gasket maker in there. Let’s see, actually ran pretty darn good! Enjoyed the ride and really like the little booger.

Also, talked with my local Ace Hardware store. They can computer scan my tank, or a shock or another part that has the original blue, then mix me a can of spray paint for about 15$. I can then get the side covers looking very close to original. Won’t be that fancy 2 layer metallic but will be fine. Then maybe spray them with some clear coat and will be looking pretty good! Won’t touch the other parts that are original paint.

Also this is what my screen looks like when I go to make attachments, which are JPEGs.

[quadz]

Originally Posted by Landsvw

The weather warmed up today and so took the bike for a pretty good ride. Has a top end bog... will figure that out, maybe needle needs raised or dropped. Has a small oil leak from right behind the cylinder. Shoot darn. Will have to remove the engine, or lift the cylinder up a bit or take it off and regasket, and/or get some Indian Head shellac gasket maker in there. Let’s see, actually ran pretty darn good! Enjoyed the ride and really like the little booger.

Also, talked with my local Ace Hardware store. They can computer scan my tank, or a shock or another part that has the original blue, then mix me a can of spray paint for about 15$. I can then get the side covers looking very close to original. Won’t be that fancy 2 layer metallic but will be fine. Then maybe spray them with some clear coat and will be looking pretty good! Won’t touch the other parts that are original paint.

Also this is what my screen looks like when I go to make attachments, which are JPEGs.

Hi, if you're still having a problem with posting images, please start a thread in the "Support" forum with as much info as you can give me, and I'll look into it for you.

Thanks

[Landsvw]

Loosened the head bolts, etc and raised the cylinder assembly enough to get some sealant between the cylinder base gasket and the block. Reassembled.

Took a good look at carb jets. Evidently carb 1, the one I had on the bike, has some Chinese jets in it with no sizes stamped in. Carb 2, the one that looks in bad shape, has the correct jets in it. Well, has a 98 main (calls for a 100 or 110) and 38 idle (calls for a 40). The Chinese jets were definitely smaller. This should cure some of the problems with it not revving up I’m thinking. If it doesn’t run right I’ll order a rebuild kit.

Maybe tomorrow finish reassemble and see how she runs. And/or leaks...

[Landsvw]

Latest on the Honda: bike ran better. Sealant didn’t work. Evidently there is a case leak just behind the cylinder. I pulled the engine, and then decided to see if the CB125 (which is bored .25 over and looks like a fairly fresh set of rings) engine was usable. Spark plug hole needs helicoil so I ordered a cheap version off eBay. Also, the valve seats, especially the intake valve are very rusty (like horrible. Wouldn’t hold gas when I poured some into the intake). I pulled the valves out of it and will lap them both in this week (I got to use a 3$ garage sale valve spring compressor I had on my shop shelf for maybe 4 years, and it works like a charm! Woo hoo!). When the helicoil Kit gets here should be able to fix that issue then reinstall the head. That should restore compression. I’ll then put the 125 engine in the bike. Meanwhile, I’ll spend some time once the bike is back together pulling the left side case ‘again’ and seeing what’s up with the leak. I ordered a new case gasket too so that should help the process. Might just go ahead and buy a used cl100 left side too, since maybe the sl125 case is slightly different and causing me an issue? Anyway I really enjoyed my weekend taking apart engines and just mega tinkering with this old beast. Have a great week all!

[Landsvw]

A day off accomplished this: valve job and spark plug hole repair. CB125 engine is installed. It started right up and runs good! Might have some piston slap, but can’t tell. Will adjust timing chain and valves this weekend and see if that helps a noise I’m hearing. Dark and rainy so no test ride. Now, to unbolt the foot pegs from the CL100 engine, attach to the CB125 engine and ride it around the block tomorrow...