Reaming drive shaft bushing
Forum rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
If you need help logging in, or have question about how something works, use the Support forum located here Support Forum
Complete set of Forum Rules Forum Rules
-
Topic author - Posts: 167
- Joined: Mon Jul 29, 2019 1:49 pm
- First Name: John
- Last Name: Burgett
- * REQUIRED* Type and Year of Model Ts owned: 1924 Touring
- Location: Camargo Illinois
- MTFCA Number: 29590
Reaming drive shaft bushing
The MTFCA book calls for .002-.003” clearance on drive shaft. What is the best size to ream it?
John
John
-
- Posts: 3298
- Joined: Tue Jan 08, 2019 10:43 am
- First Name: Larry
- Last Name: Smith
- * REQUIRED* Type and Year of Model Ts owned: 13 Touring, 13 Roadster, 17 Coupelet, 25 Roadster P/U
- Location: Lomita, California
- MTFCA Number: 121
- MTFCA Life Member: YES
- MTFCI Number: 16310
Re: Reaming drive shaft bushing
Why not try a combination reaming and facing tool. They are available.
-
- Posts: 4358
- Joined: Sun Jan 06, 2019 12:18 pm
- First Name: Steve
- Last Name: Tomaso
- * REQUIRED* Type and Year of Model Ts owned: 1914 Touring, 1919 Centerdoor, 1924 TT C-Cab Express, 1925 Racer
- Location: Longbranch, WA
- MTFCA Number: 14972
- MTFCI Number: 15411
- Board Member Since: 2001
Re: Reaming drive shaft bushing
You have to consider the lubricant used - grease, so at least that.
-
- Posts: 523
- Joined: Sun Jan 06, 2019 11:12 am
- First Name: Joseph
- Last Name: M
- Location: MI
- MTFCA Number: 0
Re: Reaming drive shaft bushing
That would depend on the diameter of the machined bearing surface on your drive shaft. A new drive shaft should be 1.000" in diameter and for a used drive shaft the upper wear limit would be 0.005" (0.995" minimum diameter). So if you are going by the MTFCA booklet, 0.002" over whatever your major diameter is. The last axle/drive shaft that I had done needed a new drive shaft and the bushing was reamed at 1.000" and had a slip fit. Hopefully this is helpful.
"Remember son, there are two ways to do this: The right way, and your way” Thanks Dad, I love you too.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
-
- Posts: 5259
- Joined: Sun Jan 06, 2019 7:21 pm
- First Name: Allan
- Last Name: Bennett
- * REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
- Location: Gawler, Australia
Re: Reaming drive shaft bushing
It depends on any wear on the driveshaft journal to a large degree. If the shaft is worn .010" then the bush needs to be undersized, and a fixed reamer will not be of much use. To use a driveshaft with such wear will also mean the square end needs to be machined back to allow an undersized bush to slide over it to run on the worn journal.
If the shaft is new, none of this applies.
Allan from down under.
If the shaft is new, none of this applies.
Allan from down under.
-
- Posts: 5459
- Joined: Tue Jan 08, 2019 4:56 pm
- First Name: Frank
- Last Name: Brandi
- * REQUIRED* Type and Year of Model Ts owned: Speedster (1919 w 1926)
- Location: Moline IL
- Board Member Since: 2018
Re: Reaming drive shaft bushing
Allen - you brought out the important point. No matter what your measure you can start reducing the size of the square end to fit through the bushing. If you do that then it will be loose in the u-joint, unless you have a u-joint with an undersized square end.
The past is a great place and I don't want to erase it or to regret it, but I don't want to be its prisoner either.
Mick Jagger
Mick Jagger
-
- Posts: 1302
- Joined: Mon Jan 07, 2019 2:42 pm
- First Name: Frank
- Last Name: van Ekeren
- * REQUIRED* Type and Year of Model Ts owned: 1916 touring, 1916 pick-up, 1924 coupe, 1926 touring, 1927 touring
- Location: Rosedale Vic Australia
Re: Reaming drive shaft bushing
The flats would remain the same, only the corners would require machining.
-
- Posts: 4967
- Joined: Sat Jan 05, 2019 1:57 pm
- First Name: Mark
- Last Name: Gregush
- * REQUIRED* Type and Year of Model Ts owned: 1925 cutdown PU, 1920 Dodge touring, 1948 F2 Ford flat head 6 pickup 3 speed
- Location: Portland Or
- MTFCA Number: 52564
- Board Member Since: 1999
Re: Reaming drive shaft bushing
The drive shaft square end only gets reduced a small amount on the corners when you have them cleaned up. The corners in hole in the U-joint are not right angles, they are curved and I would have to go look for sure but I think the radius of the corners are already larger then the corners on the drive shaft from the broching process. The flats turn the shaft not the corners.
I know the voices aren't real but damn they have some good ideas!
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
1925 Cut down pickup
1920 Dodge touring
1948 Ford F2 pickup
-
Topic author - Posts: 167
- Joined: Mon Jul 29, 2019 1:49 pm
- First Name: John
- Last Name: Burgett
- * REQUIRED* Type and Year of Model Ts owned: 1924 Touring
- Location: Camargo Illinois
- MTFCA Number: 29590
Re: Reaming drive shaft bushing
Thanks for all the ideas. I am using a new drive shaft but I do not have it yet. If I have to enlarge the bushing, I plan on boring it close to size with a lathe. I will then install it and finish it with a hone.
John
John
-
- Posts: 523
- Joined: Sun Jan 06, 2019 11:12 am
- First Name: Joseph
- Last Name: M
- Location: MI
- MTFCA Number: 0
Re: Reaming drive shaft bushing
There are 2 issues that I found with the newly made drive shafts, both on the machined square end for the universal joint. The first is the chamfer on the end, they only chamfer the edge of the machined flat surfaces and ignore the "corners" that are left (I apologize for the photo quality, it is the only one that I have):John Illinois wrote: ↑Tue Jan 07, 2020 9:59 amI am using a new drive shaft but I do not have it yet.
John
Be sure to chamfer those four corners. If you look at an original Ford Drive shaft versus a modern made drive shaft you will see that Ford chamfered the entire leading edge and the newly made ones only chamfer what they machined. Those sharp edges can/will dig into your nicely reamed bushing and raise some material and create a bind.
Second, you may need to dress/break/reduce the aforementioned corners down their length to get the u-joint to fit. If you look at an original Ford drive shaft, they not only machined the flats for the u-joint, but also the corners that were left. The new drive shafts leave the corners at a 1.000" diameter and that can create an interference problem when trying to install the u-joint to the drive shaft. Check your u-joint fit to the drive shaft end and if it is tight or does not want to go on, that is your problem. On the original drive shafts, these "corners" were machined flat. Aside from those 2 issues, the drive shaft is excellent, they just missed a couple of steps.
"Remember son, there are two ways to do this: The right way, and your way” Thanks Dad, I love you too.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
LOOKING FOR A LUFKIN No. 9A Height Gage Attachment.
-
Topic author - Posts: 167
- Joined: Mon Jul 29, 2019 1:49 pm
- First Name: John
- Last Name: Burgett
- * REQUIRED* Type and Year of Model Ts owned: 1924 Touring
- Location: Camargo Illinois
- MTFCA Number: 29590
Re: Reaming drive shaft bushing
Pep,thanks for the tip. My old driveshaft is in bad shape but I get the idea. I will make a 1" hole in a piece of aluminum and make sure everything clears and is not sharp.
John
John
-
- Posts: 30
- Joined: Thu Dec 19, 2019 7:37 pm
- First Name: Ray
- Last Name: Maciej
- * REQUIRED* Type and Year of Model Ts owned: 1915 touring, 1925 roadster
- Location: Royalton, MN.
- MTFCA Number: 28154
Re: Reaming drive shaft bushing
Has anyone welded a driveshaft end and machined it to 1.000". Thanks Ray
-
- Posts: 5259
- Joined: Sun Jan 06, 2019 7:21 pm
- First Name: Allan
- Last Name: Bennett
- * REQUIRED* Type and Year of Model Ts owned: 1912 van, 1917 shooting brake, 1929 roadster buckboard, 1924 tourer, 1925 barn find buckboard, 1925 D &F wide body roadster, 1927LHD Tudor sedan.
- Location: Gawler, Australia
Re: Reaming drive shaft bushing
Ray, I have had a few hard chromed and ground back to 1.000" That way there's not so much heat involved, and the ground journal is smooth and hard.
Allan from down under.
Allan from down under.
-
- Posts: 806
- Joined: Sun Jan 06, 2019 11:44 am
- First Name: Scott
- Last Name: Clements
- Location: Waynetown Indiana
- MTFCA Number: 49592
Re: Reaming drive shaft bushing
I recently did the rear axle on my roadster and with a new bushing and new drive shaft. All I had to do was run a ball hone in the bushing to clean up the bur from drilling the grease hole and polish the bore a bit and it fit fine. I just installed another one for my coupe and it was the same. The new bushings fit on the new drive shafts before pressing them in. So they compressed very little when installed. I think the press fit is around .002"?
-
Topic author - Posts: 167
- Joined: Mon Jul 29, 2019 1:49 pm
- First Name: John
- Last Name: Burgett
- * REQUIRED* Type and Year of Model Ts owned: 1924 Touring
- Location: Camargo Illinois
- MTFCA Number: 29590
Re: Reaming drive shaft bushing
That is good to hear.
-
- Posts: 30
- Joined: Thu Dec 19, 2019 7:37 pm
- First Name: Ray
- Last Name: Maciej
- * REQUIRED* Type and Year of Model Ts owned: 1915 touring, 1925 roadster
- Location: Royalton, MN.
- MTFCA Number: 28154
Re: Reaming drive shaft bushing
Thanks Allan. I like that idea! Ray