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Drive chain adjustment

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1955 Model 30 International Went to tighten the drive chain and soon realized I wasn't so confident that I knew what I was doing. Nut loosened easily on primary side but fixed head spindle on timing side  was very tight ( didn't try forcing it). Before I start getting aggressive, I am asking what is the process of tightening the chain for this model. Currently it has about 1 1/4" slack while on the center stand. Planning on tightening to 3/4" 
 

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rear axle nuts can be tight , axle needs to be move equal amount both sides unless wheels not in line . 3/4" only ok if suspension  compressed and tightest spot determined . Better a bit loose than too tight.

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Hi Fred,

   First, tighten the wheel nut up again and check the wheel is in line with the front and if you are happy with that check the adjustment nuts on the swinging arm fork ends are tight. The wheel spindle is in 2 parts so you need to undo the off-side fixed head first. Don't worry about the thread as these can take 100 ft/lbs but make sure nothing has been crush damaged. Next undo the chain side nut, not too much as you need a little friction when you make the adjustment. Try a half turn on each side and check the tension at several different places by turning the wheel and repeat until it's about right. Chains and sprockets never wear equally and you will find a big variation of slack at different points. When you tighten the spindle nuts it's chain side first, fixed head second. Sometimes tightening the nuts will also tighten the chain, so double check after and if you can get someone to sit on the bike with it off the stand, you can see if there is any variation with the suspension loaded.

Thanks for the clear direction. Absolutely enjoying this bike but still getting to know it better 

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Hi Robert,

    Sorry, our posts crossed over, so I ended up repeating your info with-out knowing.

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Its all good Richard . Many hands .........We happily have a have a deep repository of thoughtfull  members prepared to  step up with  expert  help.  And doing it without being condiscending in any way.  It makes our club  pretty special. 

 



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