Chain keeps breaking

[Dave771983]

Just replaced my stock 415 chain with a #41 chain from tsc. I heard the # 41 is stronger. I thought it looked a bit flimsier. Any thoughts?

 

[Greg58]

The chain is not stronger by much, but made better. 420 motorcycle chain is over twice as strong as standard 415.

 

[gary55]

If you really want quality chain The KMC Kool chain in K710 tensile is 2866 lbs. If due to sprocket size you need the 3/16" width the K910 tensile is 3306 lbs. and their 415h is 3946 lbs.

 

[Greg58]

As Gary pointed out there are many different types of chain in both strength and quality, the chart I posted is more of a guide to show which chains are the correct pitch for our use. For those building a 79cc chain is the most important upgrade, buy the best you can afford.

 

[Spare_Parts]

That philosophy stuff is all Greek to me.

That almost got past me!

 

[Freddy Snottgrass]

So with the wheels, I also go a freewheel cassette. I didn't pay attention and it is the wrong size for the chain used on the 7 speed cassette that it replaced. I asked the seller what size chain fits and he said a KMC 410. Is that the same 410 the engine kit uses? If so, wouldn't a 415 chain fit as well? I have about 30 feet of 415 chain laying around.

 

[Greg58]

If it were me I'd try it, only 1/16 " difference in the width of the chains.

 

[The_Aleman]

So with the wheels, I also go a freewheel cassette. I didn't pay attention and it is the wrong size for the chain used on the 7 speed cassette that it replaced. I asked the seller what size chain fits and he said a KMC 410. Is that the same 410 the engine kit uses? If so, wouldn't a 415 chain fit as well? I have about 30 feet of 415 chain laying around.

415 on a cassette? No! 7-speed chain is usually 3/32", if you use 415 on it, you'll likely start chipping teeth off the gears, ruining the cluster.

 

[Greg58]

This is confusing, I thought he took the seven speed cassette wheel off and went to a mag wheel of some sort. He says the muti-speed chain doesn't fit.

 

[The_Aleman]

I re-read the whole thread and I spose I see what OP means. Single-speed freewheels are not "freewheel cassettes", they are just freewheels.

415 will work fine on a single-speed, I've run one on mine for years. It's just a bit heavy, may notice a slight power loss.