Question about Trek 69er Single Speed

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How do i tighten my slack chain on my trek 69er i am not sure how to do this

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It's the rear derailleur's job to take up or provide the proper chain tension as you shift to different gear combinations. It has limits.

It may not be malfunctioning.

Using the large front chainring and the largets cog in the back can pull up too much chain; using the smallest chainring in the front and the smallest cogs in the back can let out more chain than it can control.

The 'extreme' opposite combinations are mechanically unsound and unnecessary to use as there are other combinations of rings and cogs that will yield the same mechanical advantages while keeping the chainline straighter, tighter and not stressing the chain sideways.


Google "how to shift gears on a bike" for vids and textsplanations.

If there is a mechanical issue, see this...

http://www.parktool.com/blog/repair-help/categories/derailleur-systems



Posted on Mar 28, 2011

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1 Answer

How do you fix the chain


Remove cover on the chain side of the saw. Loosen the two hex nuts that hold the bar onto the saw. You will need to loosen the tightener screw also. Place chain back onto the bar making sure the chain is positioned properly in the sprocket at the rear of the bar and just reverse the directions. Tighten the tightener screw until the chain is tightened leaving a little slack, then tighten the two hex nut. Replace the side cover. When you pull the chain down away from the bar, it should have just a bit of slack not tight. This allows the chain to turn without a lot of friction. I hope this helps.

Jan 26, 2014 | Homelite Garden

1 Answer

How to tighten a chain on a Polaris 325 Trail Boss


fist you have to jack the rear end up then loosen the two pinch bolts on the bearing housing. the housing will be right in the centre of the axel. you hve to check your sprockets to make sure theyre still in good shape. like no teeth missing or rounded teeth. if there is replace the chain and sprockets.if there good just have to turn the housing to tighten up the chain. leave a little bit of slack, about 1/2 inch. check slack by sitting on it and check the play in it.

Jun 08, 2012 | Garden

1 Answer

I have a TREK mountain bike with a Shimano combination brake and shifter with an Altus derailleur. It shifts all gears fine but when coasting with my feet on the pedals, the chain goes slack and sags...


Only YOU can evaluate any error you may have made. LOOK at why the chain is slack. Does the rear derailleur pull back to take up the slack? Are you using some ridiculous small chainring, small rear cog combination that allows too much chain to go slack?

Perhaps the freewheel isn't freewheeling and is instead feeding chain forward when you stop pedaling. Walk the bike forward and see if the rear cogs just coast. If not, lube time (internal). take it to a Bike Shop or buy all the special tools and DIY.

http://www.parktool.com/blog/repair-help/categories/derailleur-systems

http://www.parktool.com/blog/repair-help/categories/cassette-and-freewheel-service




Mar 22, 2011 | Cycling

1 Answer

I need to tighten my chain on my fzr 1000,its a 1987


The first step is to find the tightest part of the chain. Unless it's a brand new chain it will have a tight spot somewhere on it. It's easiest to do this with the bike on a race stand if you have it. Rotate the wheel and observe the lower part of the chain and watch it lift up when you hit tight spots. The spot where the chain lifts highest is the tightest part of the chain. Once you have found this spot, grab the chain on the low side under the swingarm and move it up and down. It should move up and down around 30-35mm or so, or an inch and a bit if you're an imperialist :) If the chain moves more or less than this then it needs to be adjusted.

To adjust the chain, you need to loosen the axle first. Don't take the nut off but it has to be loose enough to undo by hand. Using 2 spanners, unlock the lock nuts on the end of the swingarm and wind the nut in or out until you get the correct amount of chain slack. always do the sprocket side (left side) first, then repeat the same on the other side. Check the chain adjuster marks to make sure that the adjusters are equal on both sides, this will make sure your rear wheel is aligned properly.

Once you have adjusted the chain, tighten the rear axle and check again. The chain slack will change slightly after you tighten the axle, it might go tighter, it might go looser. Depends on the bike. But the chain slack must be correct with the axle tightened. A bit of practise here and you will be able to guess the correct amount before tightening the rear axle.

Once you have the slack set correctly and the axle is tight, make sure to tighten the adjusters. Tighten the front nut first against the swingarm plate so it can't move. Do it tight but not crazy tight. Then holding the first nut so it can't move tighten the locknut against the first nut. Repeat this on both sides.

If you are not quite sure if the chain is right, always err on the side of making it too loose rather than too tight. Running your chain too tight can destroy your output shaft bearing. It's only about $30 or so for a new one but your engine needs to be completely stripped down to replace it, it's not a fun job. I have seen a lot of FZs and FZRs have this problem because people ran chains too tight. If your chain really is too loose then it will start making your gear changes harder to do, that's the sign you need to tighten it.

Feb 14, 2011 | 1987 Yamaha FZR 1000

1 Answer

How do you tighten chain


Thanks for contacting FixYa. I was just reviewing some of the old unsolved problems and wanted to make sure your question gets resolved.

Chain can be correctly tightened by loosening the axle nut so the axle floats. Then tighten the chain tensioning nuts on either side evenly so they tighten the chain. When the chain is properly tensioned you will have 3/8th - 1/2" of slack between the chain and the swing arm. Then re-torque the axle nuts and lubercate the chain. Should be ready to go.

TF

Sep 13, 2010 | 2008 KTM 990 Super duke

1 Answer

When i put it in reverse the chain slacks up


well first off check make sure the the chain gears of inline if nt then u need to line them back inline then put chain back on check the slack in the chain if its too loose u will need tighten it up but if u cant tighten the chain up due to chain streched out then u may need to take a few links out of the chain

Sep 12, 2010 | Polaris ATV

2 Answers

Yamaha warrior chain.


HELLO; Heres all you should have to do this,set your quad up on a atv jack or on a milk cartoon.Loosen the four bolts that hold the rear bearing carrior and back off your adjusters then push the carrier forward till it stops,relay your chain and adjust it leaveing a little slack, tighten your mounting bolts then, something I do, spin the rear tires to see if the slack is right if not loosen the bolts and proceed again with the proceedure turning out the adjusters a little more look at the chain as you dothis and you will see the slack in the chain on the top. GOOD LUCK.

Jun 25, 2009 | 2003 Yamaha YZ 250

2 Answers

The chain on my chain saw is slack.


The adjusting screw is usually found on the right side of the saw close to the bar, near the bottom. You will need to loosen the two nuts on the side that hold the bar tight. Loosen them until the bar lifts up and down (about 1/2") with your finger.

There should be a combination spark plug wrench and screwdriver that came with your saw. If not, use a slot screwdriverto tighten the chain while you hold the bar up with two fingers.

When adjusted properly, there should be no hanging slack in the chain when it is warm. It should rest just against the bar so that you can grasp it with gloves on and pull it toward you.

When it is tightened thusly, tighten the two side nuts while holding the bar up with two fingers. If you don't tighten the two nuts enough, it will loosen and the chain will have slack again shortly.

Remember that the hotter the chain gets, the looser it will be. Make sure your chains is getting plenty of bar oil. Never use regular motor oil.

Jun 08, 2009 | Homelite ZR10926 16 Chain Saw

2 Answers

I need to tighten my chain


Look at the rear axle. There should be marks on both sides indicating where the axle is in relation to the swingarm. Note the position of the axle, then loosen the axle. There MAY be chain adjusters at the back end of the swingarm, but not all bikes have those. If yours does, as you look at the swingarm from the rear of the bike you will see two adjustment bolts. Tighten those up, and make sure you keep the axle position indicators the same on both sides. Your chain should have 1-2 inches of slack as you lift and press down on the middle of the longest run of the chain. Often there is a sticker on the swingarm that tells you how much slack is acceptable, do as the sticker says if it is there.

Mar 15, 2009 | 2005 Yamaha Ybr 125

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