View Full Version : Torque Wrench Question
Skyline
09-17-2007, 04:15 PM
When setting up a pinion bearing, what type of in/lb torque wrench are you folks using? Maybe I'm not looking for the right thing, or perhaps not in the right place, but I'm having a bit of difficulty finding the right tool.
Since this is going to have to measure the rotation of the big yoke nut, I figured a 1/2 drive wrench would be the best...but even the in/lb versions of those that I have found (like the Snap On TE51) seem to be too widely calibrated (0-600 in lbs) to make sense. Isn't the correct rotational resistance under 20 in lbs??? With a 0-600 scale the needle would hardly move. Is it necessary to step down to a 3/8" drive wrench to get sufficient definition? (Like a Snap On TE12FUA)
silber
09-17-2007, 05:40 PM
http://www.performancebike.com/shop/profile.cfm?SKU=11387&subcategory_ID=4219
Comes with a 1/4 to 3/8 adapter. Just add a 3/8 to 1/2 adapter and you are set.
http://www.stanleyproto.com/default.asp?TYPE=CATEGORY&CATEGORY=DIAL+TORQUE+WRENCHES&strSiteName=PROTO&strDefaultCatalog=PROTO
Mine is 0-75 in/lbs (6169). It was around $170 from MSC, I didn't pay that though... had 2 of them actually, gave the other to my brother.
i use 3 drive adapters with my inch/pound torque wrench (1/4" to 3/8" + 3/8" to 1/2" + 1/2" to 3/4") - pinion nut socket is 3/4" drive
Norbar Model 5 #13002 10-50 in/lbs
http://www.norbar.com/pdf_upload/Page10_Aug05.pdf
http://www.the-jersey-devil.com/photopost/data/500/28100_16811-med.JPG
midwestxj
09-18-2007, 09:34 AM
Dude, do you really have a 2x4 on top of that jack stand???
Dude, do you really have a 2x4 on top of that jack stand???
yup - it's only supporting the empty axle
i have stands under the frame supporting the heep
SOLITUDE
09-18-2007, 10:01 AM
I just picked up this one from Advance. It was cheap and I needed one.
http://www.partsamerica.com/ProductDetail.aspx?MfrCode=PBI&MfrPartNumber=644999&CategoryCode=3418
Ted_Z
09-18-2007, 10:26 AM
When I set the pinion bearing preload on the D44A I just set up I used a little craftsman clicker type and a handfull of adapters. Most people recommend a beam type torque wrench because its much easier to read the tourqe when the pinion starts to turn.
You can still do it with a clicker with a trick. For the D44A, 20-40 in-lb is called out for the preload . That means it should turn without clicking when your wrench is set at 20in-lb and should click before turing at 40in-lb. (you can play this game while adjusting the setting to narrow the range.)
A clicker torque wrench is hard to get a good #.
If you can turn the pinion with the torque wrench set at 20 in/lbs and it doesn't click, that would mean your preload is too low. And if it clicks at 40 in/lbs, it's too high.
I have a Snap On TE12FUA as well. They read too high for pinion preload IMO. Most torque wrenches are not accurate at the bottom 20%, which would be what you need for pinion preload.
Every tool box should have a good selection of torque wrenches. I have like 7 or 8 of them, from a few in/lbs up to 1000ft/lbs.
TrojanMan
09-18-2007, 12:32 PM
A clicker torque wrench is hard to get a good #.
If you can turn the pinion with the torque wrench set at 20 in/lbs and it doesn't click, that would mean your preload is too low. And if it clicks at 40 in/lbs, it's too high.
I have a Snap On TE12FUA as well. They read too high for pinion preload IMO. Most torque wrenches are not accurate at the bottom 20%, which would be what you need for pinion preload.
Every tool box should have a good selection of torque wrenches. I have like 7 or 8 of them, from a few in/lbs up to 1000ft/lbs.
Not all of us have that much money.
Skyline
09-18-2007, 02:33 PM
Sounds to me like a dial type, with a memory needle would be the best solution. Does it throw off your reading if you use a 1/4" torque wrench with adapters 1/4" to 3/8" plus 3/8" to 1/2" and a 1/2" drive socket?
Ted_Z
09-18-2007, 04:33 PM
Does it throw off your reading if you use a 1/4" torque wrench with adapters 1/4" to 3/8" plus 3/8" to 1/2" and a 1/2" drive socket?
No, the slop in the adapter stack is taken up as soon as you rotate the wrench assembly.
No, the slop in the adapter stack is taken up as soon as you rotate the wrench assembly.
10-4
AndyZJ
09-18-2007, 09:15 PM
Wasn't there a rule for every inch of extension add another foot pound of force? Or is it inch of extension for inch of force?
canadian_driver
09-18-2007, 10:20 PM
i got a in/lb wrench when i was making bikes, check bike shops
Wasn't there a rule for every inch of extension add another foot pound of force? Or is it inch of extension for inch of force?
read: http://en.wikipedia.org/wiki/Torque
Ex-Nihilo
09-19-2007, 01:01 AM
I have a matco beam style one(DR50I), it was like 80 bucks. 3/8 drive but they make adapters so it isn't that big of a deal. it goes from 0-50" lbs. The first axle I set up I used a click style tq. wrench. After I bought this matco one I rechecked it, and it was off by quite a bit. Luckily it was in an offroad only rig that didn't see but about 500 miles. I reset the preload and all was well. It has been running around in a buds rig for over a year with no probs.
Keep an eye out for deals. A few of the one's I have I got for free because they were damaged/wouldn't cal. Paid $40-50 for Snap On to rebuild/re-cal and simple as that.
I did the same for my toolboxes. My main box is a top, bottom and side cab, then I have a smaller roll around too, all Snap On.. I paid around $1500 for all 4 cabinets.
Not all of us have that much money.
AndyZJ
09-19-2007, 11:16 AM
This site (http://home.jtan.com/~joe/KIAT/kiat_3.htm) gave me information on proper torque wrench use. Oh and Wikipedia is full of errors.
All our stuff has to be +- 5%. If it can't be adjusted to get that, it's garbage. I have had some brand new Snap On torque wrenches not meet that and had to get them warrantied (Snap On warranties them for 3 years)
Also before you use a clicker wrench, you are supposed to cycle it 6 times at 50% torque to get everything working.
(I run the tool crib at work if your wondering)
Powered by vBulletin® Version 4.2.2 Copyright © 2024 vBulletin Solutions, Inc. All rights reserved.