Help with tranny repair
-
- Member
- Posts: 83
- Joined: Sun Apr 04, 2010 8:01 pm
- Bikes: '80 FLT
'51 FL Bobber - Location: Wisconsin
- Been thanked: 5 times
Help with tranny repair
Here is a picture of my tranny after being welded up. Some idiot tried to press out the race from the wrong way and blowing out the backside and mainshaft area. I had it welded back together and re-machined for an oversize race. I did this before learning that you don't weld up transmission cases. Will I be riding on borrowed time with this type of repair?
Thanks in advance.
Frank
Thanks in advance.
Frank
You do not have the required permissions to view the files attached to this post.
-
- Senior Member
- Posts: 6937
- Joined: Sun Feb 10, 2002 2:30 am
- Bikes: -
- Location: Central Illinois
- Has thanked: 112 times
- Been thanked: 310 times
Re: Help with tranny repair
Frank!
I see nothing alarming in the photo (other than the peacock heat signature and sprocket wear upon the main drive gear).
If your welder was skilled, and the machinist was carefull, it should do fine.
Does it turn through smoothly, without bind on either the shaft or the gear?
.....Cotten
I see nothing alarming in the photo (other than the peacock heat signature and sprocket wear upon the main drive gear).
If your welder was skilled, and the machinist was carefull, it should do fine.
Does it turn through smoothly, without bind on either the shaft or the gear?
.....Cotten
-
- Member
- Posts: 83
- Joined: Sun Apr 04, 2010 8:01 pm
- Bikes: '80 FLT
'51 FL Bobber - Location: Wisconsin
- Been thanked: 5 times
Re: Help with tranny repair
It does turn smoothly. It shifts good too sitting in the frame. I just needed to have assurance that it won't grenade when I take it for it's long overdue ride.
-
- Moderator
- Senior Member
- Posts: 8378
- Joined: Sat Nov 15, 2008 4:09 am
- Bikes: Multiple H-D, Ducati, BMW, Triumph, BSA,...
- Has thanked: 478 times
- Been thanked: 2933 times
Re: Help with tranny repair
There are hundreds (if not thousands) of welded up tranny cases in use with no problems. Who told you not to weld a tranny case?
-
- Member
- Posts: 83
- Joined: Sun Apr 04, 2010 8:01 pm
- Bikes: '80 FLT
'51 FL Bobber - Location: Wisconsin
- Been thanked: 5 times
Re: Help with tranny repair
I must've read it on another forum. The case was broken into 3 to 4 pieces so I had a welder put it back together without skimping on the welding rods. I re-machined the mainshaft area and re-decked it where the lid goes on.
-
- Moderator
- Senior Member
- Posts: 3711
- Joined: Mon Dec 01, 2003 11:38 pm
- Bikes: '42 WLA X 2, '55FL, '93 Ultra Classic, '91 Fatboy, '97 883, '03 Rokon Trailbreaker, '83 GPz 750.
- Has thanked: 70 times
- Been thanked: 128 times
Re: Help with tranny repair
i have one in my '55 that was repaired before i bought it in the '80's.
it has seen continous use since then.
john
it has seen continous use since then.
john
-
- Senior Member
- Posts: 6937
- Joined: Sun Feb 10, 2002 2:30 am
- Bikes: -
- Location: Central Illinois
- Has thanked: 112 times
- Been thanked: 310 times
Re: Help with tranny repair
fl9018!fl9018 wrote:I must've read it on another forum. ...
It used to be that we got our misinformation from the next belly up to the bar.
It's a bigger bar now.
....Cotten
Caveat: Since you did the machinework, and certainly would have observed any welding issues, the responsibility if it fails falls no where else.
So I'd bet you're good to go.
(What have you to lose now?)
Still wonder about the peacock colors on the gear, though.
Not that they are a problem necessarily, but how they occurred.
I might suspect a "supernut"!
-
- Moderator
- Senior Member
- Posts: 8378
- Joined: Sat Nov 15, 2008 4:09 am
- Bikes: Multiple H-D, Ducati, BMW, Triumph, BSA,...
- Has thanked: 478 times
- Been thanked: 2933 times
Re: Help with tranny repair
Most of the factory gears I have are 'peacock" colored somewhere on the gear, a by product of the heat treating process....
-
- Senior Member
- Posts: 516
- Joined: Sun Apr 24, 2011 4:29 pm
- Bikes: '54 FL and a mini-bike
- Location: in the garage
- Has thanked: 4 times
- Been thanked: 84 times
Re: Help with tranny repair
To produce those particular oxide colors (the peacock colors) you need to heat that area of the shaft to around 550 -650 F., maybe even a little higher depending on the alloy. My guess is that it's simply from tempering after hardening during the heat treat process.
Geo.
Geo.
-
- Senior Member
- Posts: 634
- Joined: Tue Mar 15, 2011 5:35 pm
- Bikes: 58 hd
91 hd
09 custom - Location: Wake Forest NC
- Has thanked: 15 times
- Been thanked: 35 times
Re: Help with tranny repair
I'll bet somebody gave it hell with a torch trying to get the nut off once upon a time. The treads don't look great, maybe just need cleaned up.
-
- Member
- Posts: 274
- Joined: Tue Mar 27, 2012 3:13 pm
- Bikes: 1945EL project
1962FLH
1974FLH - Location: Central Texas
- Has thanked: 41 times
- Been thanked: 37 times
- Contact:
Re: Help with tranny repair
Outstanding job on the case repair; you did good work. I noticed the discoloring on the end of the main shaft as well as the high gear.
John
John
-
- Former member
- Senior Member
- Posts: 3332
- Joined: Sat Jun 26, 2010 1:54 pm
- Bikes: 1958flh 1969sporty,had a knuckle but sold back to original owner
- Location: NEW JERSEY
- Has thanked: 195 times
- Been thanked: 277 times
Re: Help with tranny repair
I agree with the other men!--Very-Nice job on the mixer case!/--Nice machine work to!,--Now go & enjoy your overdue fun!---Respectfully---Richie