Need some info on my new bike.

[rickieh]

I just bought one of these used....
http://motorcycle-specs.com/motorcycle_specification.asp?manufacturer=SunL&model=SLD-200GY&year=2006

http://www.motosportsparts.com/s.nl/sc.14/category.8518/.f

and I am very pleased,but the back sprocket has like 57 teeth.Does anyone know a compatible sprocket that I can buy off of Ebay or somehting with fewer teeth so I can go a little faster? I dont need torque really so I'm not concerned with the loss of power but I really do need to go about 10mph faster.

[Weldangrind]

Welcome!

How many teeth does the front sprcoket have? That would be easier / cheaper.

[rickieh]

I have no idea how many the front has or even how to get to it. but hey Ill do whichever to get it to 55mph.

[Weldangrind]

The countershaft sprocket cover is held on with two or three bolts; likely 8mm heads.

[rickieh]

do i need to remove anything on the engine to get it out?

[Weldangrind]

Just the aforementioned cover. Really easy.

[SpudRider]

Welcome; we are glad you joined us. :)

After you remove the front sprocket cover we can verify which new sprocket will fit your bike. :)

Spud :)

[FastDoc]

Welcome to the forum.

Nice bike. Identical to my fist CB, a HSUN.

I went to 45 tooth sprockets on the two I had and considered it optimal for dual sport riding.

[rickieh]

Why is it that the front will have a bigger impact than the back?

[SpudRider]

...How many teeth does the front sprcoket have? That would be easier / cheaper.
Why is it that the front will have a bigger impact than the back?
The front sprocket doesn't have more "impact" than the rear sprocket. The front sprocket is merely easier, and less expensive to change. ;)

Spud :)

[rickieh]

a sprocket is like 10-20 bucks,what else am I looking at?

[rickieh]

so I tried to get my sprocket off today but I cant even get the cover off.
I cant get the part circled in white off because it's hitting the part circled in red?

http://i47.tinypic.com/2cdbcec.jpg

also what oil are you guys running?

[SpudRider]

...also what oil are you guys running?
Any good motor oil will work well, just avoid "energy saving" motor oils which won't work with the bike's wet clutch. ;) You might enjoy reading the following articles on motor oil. :)

http://www.calsci.com/motorcycleinfo/Consumables.html
http://www.calsci.com/motorcycleinfo/Oils1.html

Spud :)

[rickieh]

thanks ,but what about this thing blocking me getting to the sprocket?

[SpudRider]

thanks so any #w# will do?,but what about this thing blocking me getting to the sprocket?
I prefer to use 15W/40, commercial grade, diesel motor oil in my motorcycles, as recommended in the links I provided. ;) However, 10W/40 motor oil is also excellent. :)

I don't see how the starter reduction gears could be preventing you from removing the front sprocket cover. :? Can you post a photograph of your problem?

Spud :)

[rickieh]

http://i48.tinypic.com/2qbrwue.jpg

http://i50.tinypic.com/b88bhi.jpg

[rickieh]

http://i50.tinypic.com/xp58wx.jpg

http://i50.tinypic.com/25gbb5t.jpg

http://i48.tinypic.com/13ztyl1.jpg

[SpudRider]

It seems you have an extra bolt behind the starter reduction gears which is preventing you removing the sprocket cover. Can you remove the extra bolt?

Spud :)

[rickieh]

That one?

http://i47.tinypic.com/serck1.jpg

[SpudRider]

Yes, that appears to be the offending bolt. ;) Can you remove it?

Spud :)

[rickieh]

Ill try tommorow. It's 11:59 pm here and I have classes in the morning. Thanks for answering my noobish questions spud.

[SpudRider]

Ill try tommorow. It's 11:59 pm here and I have classes in the morning. Thanks for answering my noobish questions spud.
You're welcome. :)

Spud :)

[rickieh]

Got it.It wasn't that bolt, I needed to take the chain off,it was hitting the chain. I have a 15 tooth sprocket. What would a 16 get me roughly? A 17? Will i need a new chain because adding 1 tooth?

http://i45.tinypic.com/28a2ucn.jpg


http://i47.tinypic.com/w7k2u0.jpg

[FastDoc]

One tooth the old chain will be fine. 2 I can't say. You may not be able to add more than one as you have clearance considerations from the sprocket to the crankcase.

[SpudRider]

You shouldn't need a new drive chain if you increase the front sprocket only 1 tooth. However, check to see how much clearance is available between the drive chain and the sprocket cover with the current sprocket. If you don't have sufficient clearance, you won't be able to install a larger sprocket. ;)

Spud :)

[rickieh]

It's about 1" max at top and bottom and about 1/4" on the side.

Where can I get a 16 tooth that will fit? Link please?

[rickieh]

http://www.ebay.com/itm/Front-Sprocket-for-KLR-650-16-TOOTH-KLR650-1990-2012-/270982596256?pt=Motorcycles_Parts_Accessories&hash=item3f17d246a0&vxp=mtr

Will that do?Not familiar with china cycles.

[SpudRider]

http://www.ebay.com/itm/Front-Sprocket-for-KLR-650-16-TOOTH-KLR650-1990-2012-/270982596256?pt=Motorcycles_Parts_Accessories&hash=item3f17d246a0&vxp=mtr

Will that do?Not familiar with china cycles.
No, the KLR650 sprocket will not fit your bike's countershaft. You need a sprocket with 6 inner teeth, such as the following sprocket.

http://www.jtsprockets.com/fileadmin/code/images/large/jtf259.jpg

Measure your current sprocket and see if the dimensions match the sprocket in the drawing above. :)

Spud :)

[wilserchinarider]

The early honda clones or hondoids, are geared very very low. I believe most users gear them like the newer GY-5's, 17 front 46 rear. Search around a bit, I put a 17 front on a similiar bike and it was very very tight to the sprocket cover, as in self machining, haha.

The huge 56T rear should very likely go as well, I think this generation hondoids are geared from the factory to carry 10 bags of rice and a family of 5, with a trailer.

17/46 should get you 60 mph and still be OK for light / medium offroading.

[FastDoc]

The huge 56T rear should very likely go as well, I think this generation hondoids are geared from the factory to carry 10 bags of rice and a family of 5, with a trailer.

I bet that's EXACTLY why they are geared the way they are! :idea:

[rickieh]

The 20,4,and 18 measurements are right but I don't know what exactly to measure for the 34 mm one. but yes they are all correct.

[rickieh]

The huge 56T rear should very likely go as well, I think this generation hondoids are geared from the factory to carry 10 bags of rice and a family of 5, with a trailer.

I bet that's EXACTLY why they are geared the way they are! :idea:

That literally made me LOL!

[SpudRider]

The 20,4,and 18 measurements are right but I don't know what exactly to measure for the 34 mm one. but yes they are all correct.
The centers of the bolt holes should be 34mm distant from each other. ;) The sprocket in the diagram fits a Honda XL185 motorcycle.

Spud :)

[rickieh]

34 it is! So I need to buy a front sprocket from that bike then?

[rickieh]

http://www.ebay.com/itm/JT-Sprocket-Front-16T-Steel-Honda-XL125-J-1988-/330806684549?pt=Motorcycles_Parts_Accessories&hash=item4d059d6b85&vxp=mtr

[SpudRider]

34 it is! So I need to buy a front sprocket from that bike then?
Yes, the JTF259 sprocket you listed on eBay will fit your motorcycle. Any other sprocket designed for the Honda XL185 will also fit your motorcycle. :)

Spud :)

[rickieh]

would this formula be accurate for determining speed gain?

max speed=40 current teeth=15 new teeth=16
40/15= 2.67
2.67x16=42.67

new top speed of 42.67 mph

[SpudRider]

No, that calculation won't work. If you want to accurately determine speed changes for different sprocket ratios, you need to fill in the all the information required at the following website. ;)

http://www.gearingcommander.com/

However, it's simpler to merely experiment with different sprocket ratios, and determine which is best for your terrain and riding style. ;)

Spud :)

[wilserchinarider]

would this formula be accurate for determining speed gain?



With these little engines you will run out of power long before gearing, 17/46 is most prefered. If you are in a flat area, others have gone a little higher, but 1st gear will be pretty tall, and 5th will lose power on hills. The 15/56T will rattle your dental fillings at anything much beyond 40 MPH. 17/46 should get you 60 MPH or close to it, but the bike is working pretty hard at that pace.

[rickieh]

what can I do to push a little more pep from the engine without extensive mods like boring? I notice a lot of people buy aftermarket exhausts, can I get one of these? Bigger Carb? or even NGK plug and wire?

Also do I just measure the size dimensions listed before to find a back sprocket too?

[SpudRider]

...Also do I just measure the size dimensions listed before to find a back sprocket too?
Yes, compare your current rear sprocket to the diagram below. ;)

http://www.jtsprockets.com/fileadmin/code/images/large/jtr269.jpg

Spud :)

[Weldangrind]

what can I do to push a little more pep from the engine without extensive mods like boring? I notice a lot of people buy aftermarket exhausts, can I get one of these? Bigger Carb? or even NGK plug and wire?

Also do I just measure the size dimensions listed before to find a back sprocket too?

I use 30mm Mikuni carbs on atv's and bikes with good results; they don't necessarily create more power by design, but they are much easier to find jets for. The key to developing more power with a free-breathing intake and exhaust is to jet the carb properly.

Some of the stock mufflers have catalytic converters built in, and that can be a major restriction. Sometimes the cat is built into the pipe, which means either chopping and welding or replacing the pipe. In any case, the stock mufflers usually suck.

A decent air filter is a good idea to help the engine breathe and to better trap dirt. I've used this one on several bikes and atv's, but I can't guarantee that it'll fit your bike: http://www.ebay.ca/itm/42mm-Air-Filter-Cleaner-250cc-ATV-Quad-Dirt-Pit-Bike-/320889859012?pt=Motors_ATV_Parts_Accessories&hash=item4ab686abc4 The price is right.