chain tension help

MotorbikeMike

Dealer
Dec 29, 2007
477
3
18
Sacramento
Hi Wayde, it's been my experiance that half-links are weak and problematic. This is wht I developed the "T-Shirt".

Tine will tell on your bike, but I've had half-links fail even on the people chain, so I will never trust one on an engine again.

Mike
 

deacon

minor bike philosopher
Jan 15, 2008
8,117
5
0
north carolina
I took a few links out of my motor chain and then used the tensioner on the people chain. The tensioner doesn't get much use so should last forever. Seems to work fine after I got the tension on the motor chain about right.
 

Pablo

Master Bike Builder & Forum Sponsor
Dec 28, 2007
3,666
6
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Duvall, WA PNW
www.sickbikeparts.com
All I can say is tensioning the chain is the biggest headache so far.....I don't mind taking links out (kinda fun really) but it just seems like I can't get the tension just right and the tensioner seems to interfere more than it helps. Also it seems like my sprocket has a small side to side wobble (NOT up and down alignment). Maybe one side is tighter than the other......:confused:
 

deacon

minor bike philosopher
Jan 15, 2008
8,117
5
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north carolina
On mine which I probably did wrong. I measured the distance from the sprocket to the first spoke one both sides of the nut. i tightened the nuts till the distance was the same for all of them. Not sure if that would help. but yeah it was a pain for me and i am never sure I have it right.
 

Andyinchville1

Manufacturer/Dealer
Dec 26, 2007
502
1
18
Scottsville, VA
Short of mounting the sprocket on a grubee hub or mounting a custom(ized) sprocket to the disc brake hub it is very difficult or nearly impossible to have a perfectly mounted sprocket with no side to side or up an down wobble....You can get very close tho or at least close enough..

Andrew
 

Pablo

Master Bike Builder & Forum Sponsor
Dec 28, 2007
3,666
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Duvall, WA PNW
www.sickbikeparts.com
...... I measured the distance from the sprocket to the first spoke one both sides of the nut. i tightened the nuts till the distance was the same for all of them. Not sure if that would help.........
Actually that is a good idea!! Don't know why I didn't think of measuring it other than lack of O2 to the brain rotfl
 

Norman

LORD VADER Moderator
Jan 16, 2008
2,605
4
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69
pampa texas
guys here's a few pictures of chain tension first is my chain slack/at rest.
 
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Norman

LORD VADER Moderator
Jan 16, 2008
2,605
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pampa texas
now the chain is pushed up or tensioned up as you can see more slop than most people like but I haven't once had my chain come off
 

Norman

LORD VADER Moderator
Jan 16, 2008
2,605
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pampa texas
here it is all back on and you can see at the top limit. Note the sheet metal screw and socket head bolt these are to stop the bracket from rotating into the spokes . The socket head bolt hole is tapped in the frame and drilled a hair over size on the bracket. I also have shims under the bracket as the frame dia. wasn't large enough and the bracket wallered around on the frame.
 

Norman

LORD VADER Moderator
Jan 16, 2008
2,605
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pampa texas
here the tensioner mount is a little different and while building the bike I built up the area where the tensioner mounts by welding on donated frame material form a donor bike. You might be able to use a propane torch and solder and do the same thing if you don't have a welder. The solder to use would be the stuff plumbers use to solder together metal ducting.
 

Norman

LORD VADER Moderator
Jan 16, 2008
2,605
4
38
69
pampa texas
another way of breaking the chain with a punch (better to use a nontapered punch )and hammer. I use my vice as a back up opened only far enough so the pins will come out. you can also use a block of wood with small holes drilled to receive the pins as they are knocked out there's many ways to do this etc.