Breaking chain?

[robertdjung]

Hi everyone,

Just an FYI I bought a hand press at Harbor Freight yesterday for around 17 that's perfect for breaking chain. It's a little more than I wanted to pay, but looks good.

Poll Question: how do you break your chains?

[jr dragster Tyler]

With a chain breaker?

[Kenny_McCormic]

Grind off the rivets

[kibble]

I bought one at Lowes several months ago, they had them on clearance but I don't remember how much I paid for it.

[ed1380]

+1 w/ kenny

[jr dragster Tyler]

But if your grinding off rivets that means your going to be using a master link which is a weak link.

[Russ2251]

Everything I have owned that has chain drive (other than saws) incorporates a master or offset link.

[Kenny_McCormic]

But if your grinding off rivets that means your going to be using a master link which is a weak link.

The chain could be re riveted, but master links are fine for our purposes.

[jr dragster Tyler]

Somone at our race track learned the hard way. Master link broke EVERY pass within 30 feet from start line. And Russ dont worry I saw the video where your chain breaks coming out of that corner around that shop area. And I have broken #41 master links driving normally with a 5 HP flatty.

[Russ2251]

And Russ dont worry I saw the video where your chain breaks coming out of that corner around that shop area.Your eyes (and ears) deceive you. I never had a chain related problem. Never!

[oscaryu1]

Grind off the rivets

Bench grinder :D

[Kenny_McCormic]

I think we are talking about cheap masters. I have seen a 6.5hp cart SHRED the chain, but it was due to never being lubed and a cheap chain.

[jr dragster Tyler]

Sorry Russ but what happened then in that youtube video where the motor just revs and kart doesnt move?

[Russ2251]

...what happened then in that youtube video where the motor just revs and kart doesnt move?Clutch was not keyed properly and slipped on crankshaft.

[jr dragster Tyler]

Clutch was not keyed properly and slipped on crankshaft.

Ouch.

[sayre315]

the master link broke on my 4 wheeler but it was cause of my lil bro not shifting right

[2or3wheels]

yeah i have had both offset and master in same chain with no problem, i grind rivents then use nail to hit em out.

[jr dragster Tyler]

:roflol: :cheers2: Theres a better way to "break" the chain. Get a Chinese cheap quad. Put it in first gear And pull in the clutch. Rev to valve float and dump the clutch.

[Kenny_McCormic]

Somone at our race track learned the hard way. Master link broke EVERY pass within 30 feet from start line. And Russ dont worry I saw the video where your chain breaks coming out of that corner around that shop area. And I have broken #41 master links driving normally with a 5 HP flatty.

YOU :censored: :censored: you :censored: cursed me! My :censored: master just EXPLODED! But the chain was REALLY worn out and needed a new new anyways.

[jr dragster Tyler]

YOU :censored: :censored: you :censored: cursed me! My :censored: master just EXPLODED! But the chain was REALLY worn out and needed a new new anyways.


Bahahah Got ya!

[GoAlterBridge]

:roflol: Hahaha... :roflol:

[jr dragster Tyler]

Worn chains can also cause sprocket wear...I will curse you on that one too!

[JerryAssburger]

Ooo! Ooo! (Arnold Horshack Style Waving)
Here's a cool thing on chains!.... Might be a sticky! (that just sounds SO WRONG!!)

Chain Dimensions

Chain types are identified by number; ie. a number 40 chain. The rightmost digit is 0 for chain of the standard dimensions; 1 for lightweight chain; and 5 for rollerless bushing chain. The digits to the left indicate the pitch of the chain in eighths of an inch. For example, a number 40 chain would have a pitch of four-eighths of an inch, or 1/2", and would be of the standard dimensions in width, roller diameter, etc.

The roller diameter is "nearest binary fraction" (32nd of an inch) to 5/8ths of the pitch; pin diameter is half of roller diameter. The width of the chain, for "standard" (0 series) chain, is the nearest binary fraction to 5/8ths of the pitch; for narrow chains (1 series) width is 41% of the pitch. Sprocket thickness is approximately 85-90% of the roller width.

Plate thickness is 1/8th of the pitch, except "extra-heavy" chain, which is designated by the suffix H, and is 1/32" thicker

.
ANSI Standard Chain Dimensions

Chain No. Pitch Roller Dia. Roller Width Sprocket thickness Work Load
25 1/4" 0.130" 1/8" 0.110" 140 lbs
35 3/8" 0.200" 3/16" 0.168" 480 lbs
40 1/2" 5/16" 5/16" 0.284" 810 lbs
41 1/2" 0.306" 1/4" 0.227" 500 lbs
50 5/8" 0.400" 3/8" 0.343" 1400 lbs
60 3/4" 15/32" 1/2" 0.459" 1950 lbs
80 1" 5/8" 5/8" 0.575" 3300 lbs


Bicycle and Motorcycle Chain Dimensions

Chain No. Pitch Roller Dia. Roller Width Sprocket thickness
Bicycle, with Derailleur 1/2" 5/16" 1/8" 0.110"
Bicycle, without Derailleur 1/2" 5/16" 3/32" 0.084"
420 1/2" 5/16" 1/4" 0.227"
425 1/2" 5/16" 5/16" 0.284"
428 1/2" 0.335" 5/16" 0.284"
520 5/8" 0.400" 1/4" 0.227"
525 5/8" 0.400" 5/16" 0.284"
530 5/8" 0.400" 3/8" 0.343"
630 3/4" 15/32" 3/8" 0.343"


Credit AS ALWAYS goes to the original poster.

[ed1380]

something similar
http://www.gizmology.net/sprockets.htm

[JerryAssburger]

something similar
http://www.gizmology.net/sprockets.htm


Cool, Ed1380! That was the site I copied the info from! ....couldn't remember the link, and trying to remember made my head hurt.

[ryf]

got a model number for that hand press?

[Ferrari motors15]

you just ave to grind te rivets and put a connecting link(1,50$):thumbsup:

[brendonv]

I just grind off the rivets and then pry the link off with a flat head. Works well. Chains can sometimes break because u put the clip on the master link the wrong way. U always have to put it so the round side is facing the way the chain goes otherwise if something hits it it will fly off and ur chain locks up and breaks. My dad taught me this. He said u have to make sure u do it on motorbikes coz u dont want it coming off at 300km/h, then ur dead. He's riden bikes all his life and rebuilt many motorbikes, he's actually made a few choppers but thats another story. Point is, make sure ur clip is around the right way, i never thought about it till he told me.

[EagleTalons]

I've never known that the clippy should be faced a certain way! I use a handheld chain breaker that I bought from MFG Supply. Works great I must say. Since master links only cost $0.50 here I don't bother re riveting the chain.

[Raywelder]

I've never known that the clippy should be faced a certain way! I use a handheld chain breaker that I bought from MFG Supply. Works great I must say. Since master links only cost $0.50 here I don't bother re riveting the chain.

How would it matter which way the clip goes, because once it reaches the other side of the sprocket it would be facing the other way anyways.
Unless its supposed to be a certain way on the bottom.

[ed1380]

no. facing toward wheels vs facing out.

[EagleTalons]

How would it matter which way the clip goes, because once it reaches the other side of the sprocket it would be facing the other way anyways.
Unless its supposed to be a certain way on the bottom.

The chain doesn't change directions. You place it in respect to the chain flow and engine rotation.

[brendonv]

Exactly the chain goes one way unless u go in reverse sometimes too haha. If u dont face the circle part the way the chain is going if a little stick or something clips it it can flick the clip off. Having the circle side of the clip facing the way the chain goes will stop this from happening. Also which side u put the clip on is essential as well. If u put it facing the engine it might clip something and fly off, i face mine towards the wheels since it then has plenty of room around it and wont hit anything.

If u still dont get it tell me and ill make a quick video.