【KITACO】Driven Sprocket (Rear) Review

Rear Sprocket replacement

The Rear of the installed product seemed to be getting a little sharp, so I bought this new one to replace it with a new one along with replacing the Chain with a new one.
The price was not that much, which was helpful.
It looks Black and does not look bad. View detail

It was Out to ask the weight.

Bore up CUB90 to 105cc.
Before the replacement, I had KITACO's F16T and R37 Ding. It gave me great acceleration and I was able to drive uphill very comfortably.
I recently test rode a CT110 HUNTER CUB with a previous rider. Unfortunately, his impression is that the acceleration is too strong and very difficult to use, and as a result, he does not enjoy it. There is a weight difference between riders, but it is only for me, so it is fine if only I can enjoy it. However, it is frustrating to hear this from someone who knows how to use the CUB. I was just reviewing the color of the axle line and decided to replace the RSprocket which is the same process.

I purchased the same KITACO as last time and the number of the pin is 36. The color is the same glossy black as last time and the Sprocket is included in the package. When I store the Sprocket after replacement, I use the package it came in to prevent the Chain oil from sticking to other things. This package is the most convenient when using multiple Sprockets, as long as you have time to clean the oil off each time.

If you are replacing it for the first time, be careful in removing the Sprocket from the Flange. Glasses Wrenchetc. may hit your hand on the sharp Sprocket the moment it is loosened because it is tightened quite hard. If possible, we recommend using a 14mm TWrench.
After the change, the acceleration was definitely reduced. However, the irregular timing has changed and the Change Pedal is easier to operate than before. I am not holding my upper body so strongly when starting, and my riding posture is better. The maximum speed has also changed, but I don't put much emphasis on it because I don't plan to use the speed on my CUB.

The calculated Sprocket ratio gives some idea of what to expect, but it is difficult to get an impression of what it is actually like to ride. Sprocket is a part that can be replaced to adjust acceleration and speed. The price of the parts to be replaced is low for this reason, which is helpful.
I will have the same person test drive it next month. I would like to make a decision in one shot to avoid being tipped off that I'm wasting my money. View detail

Balance of practicality and price

We replaced it at the same time when we replaced the Chain on the APE 100TypeD.
The replacement will be from OEMSprocket.
There is no problem in use. If you just want to replace it, installation is easy.
However, if you want to work more precisely when installing the Sprocket on the Wheel, it may be better to have a little ingenuity and a certain level of maintenance skill. However, since there is a lot of play in the diameter of the holes, there is a little less than 1mm of space between the Stud bolt and the Sprocket. Therefore, the center of the wheel and the center of the Sprocket must be aligned before tightening the nut, otherwise the wheel will be shaky in the circumferential direction when it rotates.
I think it is possible to improve the tolerance accuracy of the hole diameter, or to prepare a nut that can be centered in the circumferential direction by making the nut ground surface taper and tightening it, or to have a simple dedicated installation tool for high precision installation. or a simple dedicated installation tool would allow for highly accurate installation.
The material is steel, but the surface is coated with a black coloring, so it can change the atmosphere from the OEM-like silver iron. View detail

Aiming for low fuel consumption & low noise

[How is it used?
In the process of maintenance &restore of the LITTLE CUB that was given to us, we replaced the 90cc engine by Tanaka Shokai's 90cc engine and changed the Driven Sprocket from 41 to 37 from the OEM one. (Driven Sprocket has been replaced with 16T) 。
After the Restore was completed, I rode around for a while in the above state...
First gear is almost useless. (Blows off a few seconds after starting) I wanted to swing a little more to the long side, so I purchased the 35 this time.
Did you receive the item as per the Image?
It is indistinguishable from the 37 Driven Sprocket by KITACO that I purchased last time. (It's the same Manufacturer and only 2 guns are different...) I was too familiar with Parts, a reliable and trustworthy company that has been really good to me, and the product was just like the Image.
Was it difficult to install?
The installation itself is a simple process of loosening four Nuts and tightening them with the specified Torque after replacement, but it is a very tedious process to get to that point.
As mentioned in the previous issue, in order to remove the Rear Axel Shaft from the Little Cub, the Exhaust System, which is blocked on the same line as the Shaft, must be removed before work can proceed. (Limited to OEM Type Exhaust System shape, Up type Exhaust System is Large sturdy) 。
Remove the Exhaust System, remove the Rear brake&Torque rod, remove the Axel shaft, remove the center nut, remove the Rear wheel from the body, loosen the 4 nuts as mentioned at the beginning, replace the Sprocket, and assemble in the reverse order of the previous procedure. The assembly is completed in the reverse order.
How did you like it?
I honestly thought that reducing the Driven side by only two guns would not change anything.
In fact, the Large sound did not change, but the engine became long enough to be useful from 2nd gear, and when cruising on a main road at the same pace as a normal vehicle, the engine sound was reduced and Stress was not felt. The secondary reduction ratio has increased from 2.3125 at 37 to 2.1875.
Was "Included Parts:" attached?
None, Rear sprocketQuantity:This is a 1 pc. only product.
Were there any disappointments?
None
Black, steel, and plain product, but the NORMALSpec. of the old CUB series is covered by the Chain Cover, so you can't see anything from the outside, so it doesn't matter what it looks like as long as the product is functional and solid.
This product is more wallet-friendly than the high-end Duralumin&Anodized Treatment Sprocket in terms of durability and cost. (This is not a denial of luxury Sprocket.) 。
Other items that would be helpful
Point and hang of installation
Above. Was it difficult to install? As described in Section 3.2, be sure to perform the work before and after the installation of this product, and do not forget to tighten it without haste.
[Availability and clarity of the Instruction Manual
There is no Instruction Manual, but the product is very easy to understand.
[Notes]
When replacing the rear side bracket, the braking system must also be removed, so be sure to assemble the bracket securely when installing it.
As for my personal trouble, I have replaced the Chain with a thicker Plate one that is specially designed for durability, and the Chain Cover Bracket is interfering with the Driven Sprocket as its diameter is reduced................it makes me cry.
[ITEMS TO BUY TOGETHER
Aside from replacement for setting, if replacement is for wear, the front and rear Sprocket&Chain is Quantity:This is a place that should be replaced by Set, so please consult with your budget before purchasing.
Since the rear wheel is to be removed and attached, it is better to take into account the wear condition of the rear brake shoe if there is room, so that the work can be done only once, which will make it easier later.
[Opinions and requests to Manufacturer
I continue to be a customer for various parts of Mini bike and I look forward to working with you in the future. View detail

I'm in a good mood ….

The NSF100 OEM Sprocket was 28, which swung quite a bit to Long, so we chose 31, swinging 3 guns to the acceleration side.
Thanks to the ability to use GEAR one speed up, it is much easier to drive.
Replacement itself is quite easy if you have enough kills and tools to remove the rear tire. View detail