|Park Torque Wrench - Which One?||Fez|
Nov 14, 2003 12:51 PM
Sorry if this is a stupid question, but this would be my first bike torque wrench. So which one is the better choice?
It says TW1 is 1/4" and comes with a 3/8" adaptor
TW2 is supposedly only 3/8"
|Oh, I think this may be a factor.||Fez|
Nov 14, 2003 1:04 PM
|Its hard to tell from the picture, but I guess the TW1 is much smaller. The max says 60 inch-lbs, but the larger TW2 says 600 inch-lbs max.
Can the TW2 do all the things that the smaller TW1 can do?
It appears most of the bit sets are 3/8", so I'm pretty sure I wouldn't be missing much by not having 1/4" capability.
|What do you want to use it for?||Spoke Wrench|
Nov 14, 2003 4:19 PM
|I basically only use a torque wrench for bottom brackets, crank arms and high end stems.
The torque spec for a Shimano crank arm works out to be around 30 or 35 ft/lbs. The torque spec for a Thompson stem is 48 in/lbs. The big one works better for one, the little one works better for the other.
Nov 14, 2003 6:01 PM
|Sears makes good tools, and you can hold it in your hands before buying. Get a big one for BBs and cassettes, and if you have any sensitive stuff (typically ultralight stems) then get a little one too. Get the "click" rather than "beam" unit.|
|re: Go to Sears||hudsonite|
Nov 15, 2003 5:45 AM
|The Craftsman/Sears tools are very good quality.
I use two different torque wrenches; both of which are the click type. One is a 3/8 inch that handles all the small stuff, such as stems, derailleurs, and brakes. The second is a 1/2" that I use for the bottom brackets and cranks.
My suggestion is always buy good quality tools. They will last a lifetime. Some of my 3/8 sockets I purchased from Sears in the mid 70's and are still used today. They will last a lifetime.
This is particullarly important with torque wrenches. When you are dealing with very expensive and fragile items, such as stems, it is important to trust the accuracy of the torque wrench. The more accurate ones will cost more $, but they are worth it. One damaged stem will cost a lot more than the difference between a good and great quality torque wrench.
Park makes good quality bicycle tools. But torque wrenches fall into the general tool category and are better sourced from a quality 'tool' retailer, IMO.
|re: Go to Sears||ukiahb|
Nov 15, 2003 7:36 AM
|I've had similar experiences with Sears/Craftsman hand tools, and the "click" type torque wrenches are indeed accurate ...they claim 5% accuracy and mine met that spec when I tested it|
|Response from Park||sokratikus|
Nov 16, 2003 3:08 PM
|I also faced the same question. I emailed Park and here is their response:
It is the nature of all torque wrenches to be accurate more toward the middle of their scales. There is no single wrench available that is accurate from the very low torques to the very high torques on a bicycle.
Hi-- I am planning to get a torque wrench. My plan was to get the TW-2, as for a few extra $, I have to flexibilit of 0-600 in pounds, versus the TW-1. Does this logic make sense or there some applications like stems, where the TW-2 will be inaccurate and thus I would need a TW-1? I want to make the most versatile investment. Thanks.