Thruxton Chain Adjustment Side Stand

Put a block of wood under the side stand so it’s as near to upright as possible and adjust the chain to the greater number ie if it’s 20-30mm go for 30mm.

 

Similar method used by me but without the laserline then I check with a steel ruler with pvc tape on it as a refrence point

 

Hi. I have a 2019 Thruxton R. I can’t find in the manuals what size socket for the rear wheel spindle nut. Anyone help ? It’s possibly around 24mm. Cheers.

 

Bonneville is 27mm. Definitely use a socket apparently using a spanner chews the nut on the spindle.

 

Thanks very much John

 

My Thruxton Bonneville. One more thing. Rear wheel spindle but. The thread is normal anti clockwise to unscrew ? It’s stuck !

 

Yes it is, it is tightened to a high torque. I had to use a long extension bar to shift it the first time. Be careful you don’t let it slip!
Can’t remember the figure of the top of my head, I am sure someone here will tell you.

 

That makes sense. I’ll try and get an extension. Thanks again Vectis John ! Cheers.

 

i need you guys help, do you have to losen lock nuts on both right and left? do you have to adjust the adjustment nuts on both sides or just spindle side? the manual is confusing to follow. i saw a yt tutorial the guy just adjusts the spindle side didnt mention if he had to do anything on the opposite side. thanks.

 

The spindle has a lock nut on one side, loosen that.You dont need to touch the other side. It is very tight so use a good quality well fitting 27mm socket (16 point) not an adjustable wrench or spanner as you can mark the nut. Then loosen the lock nuts on the two adjusters - these are the bolts on either side of the swing arm ends. If you look you will see that as you tighten or loosen the bolt it moves the spindle backwards or forwards, tightening or loosening the chain. You need turn both of these to achieve the correct amount of slack on the chain. Turn both the same amount to ensure the back wheel stays aligned in the swing arm. My Bonnie has marks to help you achieve this. I also double check with a vernier gauge as the marks are very feint on my bike. Also on my Bonnie I have to take the silencer off to get to the spindle nut and adjusters. When you are done don't forget to re torque the spindle nut. Not sure what the Thruxton is but someone on here will tell you.

 

Hi, yes to the above. I will only add that you should check the slack of the chain All round as you might have a tight spot on your chain, as they can stretch unevenly, and use this area to measure the tension as you adjust it. Also re check the tension once you have finished and tightened the spindle nut.
Spindle nut is 85nm

 

thank you.

 

thanks for the detailed instructions. i want to double check something; when you say the lock nuts do you mean the pair right by the spindle nut? what about the pair furthest away from the wheel, the manual mentioned to losen it, but did not mention for both sides. so im assuming i just have to losen those and turn the pair closest to the spindle/wheel to make adjustments correct? then afterward i just have to hold them in place while i lock up the pair furthest away and then lock the main spindle nut? thanks in advance. apologize for dumb questions this is my first time messing with my bike.

 

Not such a stupid question as we've been confusing you all the way through! Just checked my thrux and there are no lock nuts, they are different. I'm assuming you have an aircooled thrux

 

Sorry I wrongly assumed you had a new LC Thruxton. The adjusters are different. The principles are the same, adjust both sides as above. Sorry to confuse you. Good luck!

 

Most chain adjustment systems don't have lock nut's on the adjustment ! As tightening the axle but locks the adjustment plates in place !

 

True but the 2016 on Bonnies do have lock nuts on the adjusters, the adjustment is built into the end of the swing arm, I had assumed the OP had a 2016 on bike.