How are you torque loading the swing arm lock nut

[NGneer]

Ok guys a question about the swing arm lock nut and particularly the “Honda Special Tool 07908-4690001” that the Haynes tells you to use....


....the new version as according to Honda this has now been superseded by 07908-4690003, like so:


...and the one I already have, IE one of the double ended clutch nut/swing arm sockets like so..


Now reading the Haynes is shows the adjuster nut (having been torqued up) being held in place with an Allan key through the middle of the first tool shown above whilst the appropriate torque loading is applied to the lock nut via the square drive on the tool arm. The Haynes even goes on to point out that the torque value quoted has already taken into account the additional distance (torque = force x distance) introduced by using this tool.

This “original” tool is now not particularly easy to track down, and when you do find one it is bloody expensive for what it is – circa 90 quid.

Moving onto Hondas own Superseding item (second pic above). I can see it has flats on the side of it so you could get a spanner onto it, but the only way to get the correct torque loading on the lock nut would be to have a crow’s foot adapter that was the right length to emulate the original tool, and I am assuming there is access down the middle for the required Allan key.

Finally onto the double ended Clutch nut / Swing arm tool that I (and I am sure many others) have. Whilst this fits the lock nut and has a square drive in the middle so you can get a wrench or torque wrench onto it quite happily, it would at the same time block access to the Allan key end of the adjustment nut you are supposed to hold whilst you apply the torque to the lock nut. Furthermore the torque quoted in the Haynes is specifically for the original ‘special’ tool and the extra distance effect calculated…so torqueing straight on means the values are different?

So – how do people actually torque up their swing arm lock nut and to what values?

[Drunkn Munky]

In short i dont use any of those tools, i just torque the lock nut up to the specific value in the haynes manual (55nm is it?) using a regular torque wrench with one of those castle sockets from ebay. I use to mark the spindle to check for movement but ive never had one move so dont even bother doing that anymore. I think the procedure stated is a little OTT to be fair although i appreciate this must play havock with your engineering mind

[speedy231278]

If you torque up using just a socket, then you are not doing it up to the mfrs spec. What is needed is someone either with the tool or access to it to measure the distance from the centre of the point the torque wrench is inserted into the tool to the centre of the tool itself. This distance can then be used to calculate the torque needed. It's probably not a massive difference, but a difference nonetheless. If it's say two inches/5cm, then according to my head, that means you'd need to increase the Imperial torque by one-sixth, and the Metric by one-twentieth. That may sound odd, but bear in mind a metre is three and a third feet, or thereabouts, and six goes into 20 by 3 1/3 times....

[NGneer]

Speedy, something like this then..

I used to be able to do stuff like this in my head back in the day, Guess Iv'e been off the tools too long

Tony, yes it does mess with my mind, but that doesn't take a lot of doing Just wondered what the rest of the purists and spanner monkeys were doing before I re-invent the wheel.

[Drunkn Munky]

Am i wrong in thinking this is just a locknut and aslong as its near enough torqued to the specs it'll do? Im all for doing things right but ive always thought the procedure for this is a little overkill.

[arsey30]

47mm centre to centre.
On e bay in s/s made to original Honda dimensions.

[Morespeedvicar]

Just do it up mate, as just dont swing on the spanner when you do it, you'll feel it tighten. I'm thinking your on about the adjustable spacer in the frame on the swing arm? pivot?
Cheers
Ian

[speedy231278]

Speedy, something like this then..

I used to be able to do stuff like this in my head back in the day, Guess Iv'e been off the tools too long

Tony, yes it does mess with my mind, but that doesn't take a lot of doing Just wondered what the rest of the purists and spanner monkeys were doing before I re-invent the wheel.

Yup, that's basically it. Although in this case you'd be doing it the other way around as you're going from what is effectively an extended torque wrench to the original length.

As for the old tool, DSS have one on the shelf, but it is the £90ish you mention. Ouch!

[speedy231278]

Do you mean this one, Arsey?

http://www.ebay.co.uk/itm/07908-4690003 ... 3cd1d6dbbb

[arsey30]

That's the one, I have NC and RC s/a spanners and they fit exactly.