I use 2 mate.

1/4 inch and 1/2 inch

you'll probably need 2 ... not sure

Mate I use 2. 1/4 and a 1/2 inch.     I picked the 1/4 inch Kincrome one up for $95.

i have 3, 1/4" , 3/8 and 1/2", i use snap-on and find them to be of a high standard, but i use all mine weekly. For the odd job home mr fix it, id look at a 3/8 and a 1/2" one, i have used kingchrome ones before and dont like them as i find that the hand (which is were you adjust your torque setting) comes loose and turns. With the snapon one they lock into a detent and will not move. But thats me im fussy like that.
Regards Andrew - T1

Depending on what work you intend to do, you'll want something that measures inch pounds (probably a 1/4" socket) another that does foot pounds. I reckon you'll get away with a maximum torque of 75-100ft/lbs for most DIY work, unless you're getting into the primary, which as Kiwidave says goes out to 160-165ft/lbs for the compensator sprocket. One thing to note, theres a reverse thread on the clutch nut (tightens anti clockwise) and *most* micrometer or deflecting beam torque wrenches measure only in one direction when they're calibrated at this level.

You will pay big $$ for one that measures in both directions and most supplier's won't know if they do. I got a Warren and Brown for this job and contracted their engineering folks to confirm before ordering. AFAIK it's only an issue for this nut.

A good set will be a 1/4" wrench that measures 2-10Nm for the small stuff. Another 3/8" wrench that measures up to 75 to 100ft/lbs for the majority of what you'll encounter. If you're getting beyond those torque settings, a 1/2" wrench is what you'll need to go with. I don't like using cheap tools on my bike or cars - SP, Sidchrome and Warren & Brown are worth a look as well as SnapOn but expect to pay $200-$350 per wrench.

You can borrow mine.

 

www.facom.com

Is the go now, they are better quaitly then Snap-On, I gave up on snap-on when they changed their warrenty from change over to sending the fautly tool away for inspection, where Facom has change over of faulty tools.

Facom is the leading European brand in hand tools, working for over ninety years with automotive and industrial maintenance professionals. A selection of products is also available for the general public do-it-yourself market.
Facom offers a full range of over 8000 products through its distribution network, which include the storage product range (trolleys, cabinets, benches, portable storage etc.), standard tools (wrenches, screwdrivers, pliers, hammers etc.) and specialist tools (Automotive, Electrical, Aerospace etc.) to meet the needs of all repair technicians.

A player in the hand-tool sector since 1918, Facom is synonymous with quality. Thanks to its knowledge of the market and daily contact with professional users, Facom has succeeded in developing tough, innovative and safe high-performance tools supplied with a full guarantee offering tool replacement and repairs.

Facom is the Premium brand of the IAR (Industrial and Automotive Repair) division of the StanleyBlack&Decker Group, dedicated to the manufacture and marketing of products for industrial maintenance and automotive repair professionals.

Today the StanleyBlack&Decker group has over 40,000 employees worldwide (with 9000 of these in Europe). It is based on 160 sites, including 25 manufacturing sites. As the world leader with over 160 years’ experience in the tool market, StanleyBlack&Decker today holds a complete portfolio of 12 premium and middle-market tool brands.

 

 

been a long time since I've used one a torque rench, but I have seen at some mining shows the Norbar and like them

 

www.norbar.com.au/Portals/0/NorbarProducts/catalogue/TruTorqueLeaflet%20Dec08.pdf

 

I highly recommend Warren and Brown