Swapping a 415 chain for a 420.

[inspectorcritic]

My chain broke again in 2 different places, because I was too damn lazy to take up the slack. For some reason I put the chain on proper tension the I guess the wheel pulls out of the hub bracket just 1/4" inch which now transforms into 2" of slack.

So, I'm ordering a spring-loaded tension assembly so if it slips it will automatically adjusted. Now, I'm beefing the chain up to a 420 but, they have different lango there is D.I.D, MX, MC other indicators which one do I need? How many links or I guess I got to measure my stock 415 just how long if I can get off my lazy ass.
Also, looking at the pictures the rollers look like they can take a 420 an additional 5mm width but no one gives specks on width anyone have a spring tension know what width?

So, I'm thinking instead of a smooth roller wheel to spend another $10.00 to buy a gear roller that would slide in, any comments on that one?

Also, I would like to keep my chain guard on, but all the pics showing the spring assembly show it without the chain guard on the bike, will it fit, or do I need to buy a tin cutter and little the guard down to make it fit?

Hurry with your answers I need to order right away to get back on the road do so some fart biking.

 

[Ralpho]

I've always used #41 chain with no issues. 420 has taller side plates so you run a higher risk of the chain jamming in the engine case and locking up the tire.

 

[DAMIEN1307]

higher risk of the chain jamming in the engine case and locking up the tire.

Heck...That would lock up the motor as well since the chain would stop dead, right in the drive gear housing unit...lol...DAMIEN

 

[Ralpho]

Heck...That would lock up the motor as well since the chain would stop dead, right in the drive gear housing unit...lol...DAMIEN

Lol, not very fun! Very important to make sure the chain is working properly. A case saver can help prevent a bad experience like this, proper tension and alignment from sprocket to sprocket with straight edge also very important.

 

[inspectorcritic]

I know of another fart biker who used a 420 without any problem chain looks like it fit so much better and it was much tougher avoiding chain breaks.

 

[DAMIEN1307]

I know of another fart biker who used a 420 without any problem chain looks like it fit so much better and it was much tougher avoiding chain breaks.

When you get it done, Let us know how that works out for ya...DAMIEN

 

[inspectorcritic]

When you get it done, let us know how that works out for ya...DAMIEN

Okay, the 420 is on works fine, but, on dropping the clutch lever it almost slides over 3 drive sprocket teeth before the engine starts up.

Also, I found out that a 440 well work too, for those who have broken chain problems that's a tuff chain will rip your bike apart before it breaks!

 

[DAMIEN1307]

Okay, the 120 is on works fine, but, on dropping the clutch lever it almost slides over 3 drive sprocket teeth before the engine starts up.

OKAY...if its sliding over the teeth, than its NOT working fine, there is a definite problem thats going to be damaging.

I think you meant to say 420 and 440 ???...you typed them as 120 and 140...DAMIEN

 

[inspectorcritic]

Some pre-cognizance, if you upgrade your Walmart chain splitter won't work chain is too big!

Is what I did was to take a fine hacksaw blade got as close to the pin cut thru the plate real careful no to damage the male link cut until 1/4 m then bent it back broke it off, then took a screwdriver blade pried on the remaining shrapnel pop it off-chain fell apart. That pin is cobalt enforce allow steel resist filing unless you have a grinder.

Another benefit, Ace Hardware carries 420 master links they don't carry 415s so if you are not prepared for a master link break your gonna half to wait for 2 weeks for mail delivery. Although from one Ace Hardware store price varies from $5.00 to $10.00 for a set of four.

 

[inspectorcritic]

OKAY...if its sliding over the teeth, then it's NOT working fine, there is a definite problem that's going to be damaging.

I think you meant to say 420 and 440 ???...you typed them as 120 and 140...DAMIEN

Yeah, I had a typo, corrected it, the error is maybe my drive sprocket is worn or I gave the chain too much slack or maybe I have extended hearing I'm not used to the new chain, because my clutch also feels different too.