What is a dedicated cam for the CT125 (JA55)?
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What is the CT125 (JA55) exclusive cam?
Here, we introduce the concept of our original cam, sold exclusively for the CT125 (JA55).
A cam has three main elements: ① lift amount, ② overlap, and ③ base circle.
Essentially, it's about drawing in a lot of air and expelling it thoroughly, with the interference between intake and exhaust playing a role.
If the lift amount is arbitrarily high, blow-through will occur, which will actually reduce efficiency, and the friction during valve opening and closing cannot be ignored.
8ft's original cam has its lift amount and overlap tuned specifically for the CT125 (JA55).
Therefore, although the apparent lift amount is small, it matches the stock engine components perfectly.
The rev limit of the stock engine is 8500 rpm. This cam is designed to work effectively up to this rpm range.
Incidentally, very few cams, even from other companies, work effectively above 8500 rpm.
I previously used T-company's N15, but as tuning progressed, its inadequacy became apparent.
Above 8500 rpm, the fuel mixture was adjusted to lean out the fuel.
When we switched to a major Thai cam, it was able to rev all the way to its rev limit of 10500 rpm.
If there is demand, I will consider adding it to our product lineup.
The camshaft is relatively easy to customize due to the simple configuration of a 4-mini air-cooled single-cylinder engine.
It's interesting to see the concepts of each manufacturer.
https://8ftweekend.com/products/fp-0010-ct125-exclusive-high-lift-camshaft-for-ct125
Here, we introduce the concept of our original cam, sold exclusively for the CT125 (JA55).
A cam has three main elements: ① lift amount, ② overlap, and ③ base circle.
Essentially, it's about drawing in a lot of air and expelling it thoroughly, with the interference between intake and exhaust playing a role.
If the lift amount is arbitrarily high, blow-through will occur, which will actually reduce efficiency, and the friction during valve opening and closing cannot be ignored.
8ft's original cam has its lift amount and overlap tuned specifically for the CT125 (JA55).
Therefore, although the apparent lift amount is small, it matches the stock engine components perfectly.
The rev limit of the stock engine is 8500 rpm. This cam is designed to work effectively up to this rpm range.
Incidentally, very few cams, even from other companies, work effectively above 8500 rpm.
I previously used T-company's N15, but as tuning progressed, its inadequacy became apparent.
Above 8500 rpm, the fuel mixture was adjusted to lean out the fuel.
When we switched to a major Thai cam, it was able to rev all the way to its rev limit of 10500 rpm.
If there is demand, I will consider adding it to our product lineup.
The camshaft is relatively easy to customize due to the simple configuration of a 4-mini air-cooled single-cylinder engine.
It's interesting to see the concepts of each manufacturer.
https://8ftweekend.com/products/fp-0010-ct125-exclusive-high-lift-camshaft-for-ct125