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Search: Posts Made By: Unca Fud
Forum: GS Boxers 10-08-2014, 09:53 PM
Replies: 472
Views: 29,265
Posted By Unca Fud
I don't think ABS events would generate peak...

I don't think ABS events would generate peak moments on the final drive, since the forward weight shift for these events would reduce the peak longitudinal rear tire patch force, compared to an all...
Forum: GS Boxers 10-08-2014, 01:55 PM
Replies: 472
Views: 29,265
Posted By Unca Fud
True - but how much additinal equivalent radial...

True - but how much additinal equivalent radial load is applied with the mini-torque - especially if it shifts (and it will) when the big nut is tightened. There isn't much angle or many rollers on...
Forum: GS Boxers 10-08-2014, 01:01 PM
Replies: 472
Views: 29,265
Posted By Unca Fud
I agree that the fretting type loading/rotatrion ...

I agree that the fretting type loading/rotatrion is a major factor and should have includd that. I also agree with setting these by feel vs by the tiny-torque-type preload.

Thinking about it...
Forum: GS Boxers 10-07-2014, 07:06 PM
Replies: 472
Views: 29,265
Posted By Unca Fud
I'd need the dimension coordinates of the four...

I'd need the dimension coordinates of the four pin locations, the suspension travel (+.- from normal ride height).

With that I'd assume about 3 Gs maximum additional vertical wheel input.
The...
Forum: GS Boxers 10-06-2014, 06:22 PM
Replies: 472
Views: 29,265
Posted By Unca Fud
Has anyone looked at Dupont's Vespel S-22? The...

Has anyone looked at Dupont's Vespel S-22? The stuff looks like bakelite, and was incredibly expensive 20 years ago, but there was no equal for creep resistance and the ability to take high loads...
Forum: GS Boxers 08-10-2014, 06:26 PM
Replies: 44
Views: 5,561
Posted By Unca Fud
It has to be grossly over preloaded bearings. ...

It has to be grossly over preloaded bearings. The factory assembled many of them that way and the fixture that was offered to dealers to do field fixes had the same conceptual problem - if the...
Forum: Equipment 04-01-2014, 11:47 AM
Replies: 15
Views: 1,621
Posted By Unca Fud
I do a full ATGATT review before replacing a...

I do a full ATGATT review before replacing a helmet. They are both important, but I'd rather go thru an accident with full ATGATT and an old helmet than not be ATGATT.
Forum: Vendors 03-29-2014, 08:49 AM
Replies: 322
Views: 24,571
Posted By Unca Fud
Just an antique engineer's fatigue opinion - ...

Just an antique engineer's fatigue opinion -

Rivets are not that necessary. They are very likely used on the OEM parts because they are cheaper and quicker to buy and install.

Use the 5 mm...
Forum: GS Boxers 01-16-2014, 02:11 PM
Replies: 17
Views: 1,563
Posted By Unca Fud
The reason your needle bearings have lasted, is...

The reason your needle bearings have lasted, is you apparently don't over preload them.

Mobil 28 is a good choice, and you might check AeroShell 14 whichnisnused in helicopter fretting...
Forum: GS Boxers 12-30-2013, 09:02 PM
Replies: 62
Views: 3,694
Posted By Unca Fud
I think in the overall scheme of things, these...

I think in the overall scheme of things, these forces are of different orders of magnitude (rod vs bolt tensions). Anything that will help your transmission come back to EXACTLY the same relative...
Forum: GS Boxers 12-30-2013, 01:27 PM
Replies: 62
Views: 3,694
Posted By Unca Fud
A beautiful set of splines. Obviously in good...

A beautiful set of splines. Obviously in good alignment.

I wonder what the white stuff is in the slopped over grease of pix #16? Might it be white lead? If so i understand the EPA won't let...
Forum: Face plant 05-28-2013, 06:57 PM
Replies: 11
Views: 2,397
Posted By Unca Fud
I'm sorry but I had to laugh at your...

I'm sorry but I had to laugh at your misfortune.:rofl
But I am also very glad you were not hurt..............:clap
Forum: GS Boxers 05-16-2013, 02:50 PM
Replies: 22
Views: 1,757
Posted By Unca Fud
+1 I think CharlieVT has done like 50 & has...

+1
I think CharlieVT has done like 50 & has not had a second failure in any. He took out a lot of shims in my LT FD.

Lucky you weren't in Alaska. :eek1
Forum: GS Boxers 05-13-2013, 10:21 AM
Replies: 25
Views: 1,965
Posted By Unca Fud
I do use and trust a beam type wrench (assuming...

I do use and trust a beam type wrench (assuming it maintains it's zero setting) for extra critical fasteners (like head bolts etc) but not on ordinary stuff.

But the extra long handle of torque...
Forum: GS Boxers 04-17-2013, 11:02 AM
Replies: 30
Views: 3,055
Posted By Unca Fud
Sorry - I was going by alloy # memory here where...

Sorry - I was going by alloy # memory here where we once made fatigue testing equipment using heat treated aluminum castings. They were unweldable but I guess I don't know the alloy number from 12...
Forum: GS Boxers 04-17-2013, 08:14 AM
Replies: 30
Views: 3,055
Posted By Unca Fud
I hate to be negative, but that is almost certain...

I hate to be negative, but that is almost certain to be an alloy similar to heat treated 356 alum, which is not weldable. The weld will have physicals way below the tensile etc of the parent...
Forum: GS Boxers 04-13-2013, 07:13 PM
Replies: 44
Views: 3,508
Posted By Unca Fud
You're lucky you caught it in time, though you...

You're lucky you caught it in time, though you obviously have a small amount of misalignment. The best bet would be to split the bike, clean up everything grease w Moly 60 & reassemble.

But if...
Forum: GS Boxers 04-12-2013, 09:53 PM
Replies: 35
Views: 3,032
Posted By Unca Fud
You should be able to get about a .030 inch dia...

You should be able to get about a .030 inch dia bent needle in between the shaft OD and the hub major dia, and between the shaft monor dia and hub inside diameter. If necessary thin the moly 60 with...
Forum: GS Boxers 04-11-2013, 03:25 PM
Replies: 44
Views: 3,508
Posted By Unca Fud
Assuming there isn't a balance problem, that's...

Assuming there isn't a balance problem, that's why the clutch disk center plate is so thin as it is really used as a flex plate. The clutch disk hub is only riveted to the flex plate. Riveting...
Forum: GS Boxers 04-11-2013, 11:43 AM
Replies: 44
Views: 3,508
Posted By Unca Fud
This is the dial indicator setup you need to...

This is the dial indicator setup you need to measure the engine-transmission run out. The blue thing is magnetically attached to the flywheel and the crankshaft is rotated with the dial indicator...
Forum: GS Boxers 04-11-2013, 11:13 AM
Replies: 44
Views: 3,508
Posted By Unca Fud
As long as everything rotates as a unit it makes...

As long as everything rotates as a unit it makes no difference if there is "run out" on the clutch pack mounting points on the flywheel (I assume that's what you filed)

The clutch disk fully...
Forum: GS Boxers 04-10-2013, 08:59 PM
Replies: 44
Views: 3,508
Posted By Unca Fud
Some have made new offset alignment bushings...

Some have made new offset alignment bushings after dial indicating things. Others have epoxied filled the holes & remachined the alignment holes in the clutch housing.

Actually I think the...
Forum: GS Boxers 04-10-2013, 08:19 AM
Replies: 44
Views: 3,508
Posted By Unca Fud
The best way to evaluate a R1XX0XX (+) bike is to...

The best way to evaluate a R1XX0XX (+) bike is to remove the starter and see how much fretting debris is in the clutch housing.

If your input shaft is longitudinally "scalloped", don't be fooled...
Forum: GS Boxers 04-09-2013, 02:35 PM
Replies: 44
Views: 3,508
Posted By Unca Fud
See if you can get a good clear picture. I had...

See if you can get a good clear picture. I had my 2000 R1100RT apart at 22K & could hardly beleive how clean it was inside. Like a darn fool I didn't take a picture:huh
Forum: GS Boxers 04-09-2013, 01:43 PM
Replies: 44
Views: 3,508
Posted By Unca Fud
I think you are good to go without a major tear...

I think you are good to go without a major tear down. A more significant thing to watch is the amount of ferrous (gray/black) and ferric (red) debris in the clutch housing. A spline in good running...
Forum: Face plant 03-18-2013, 05:37 PM
Replies: 8
Views: 2,261
Posted By Unca Fud
Make sure the KLR still drives straight hands...

Make sure the KLR still drives straight hands off. If not, the frame is twisted.
Forum: Airheads 03-11-2013, 10:45 AM
Replies: 17
Views: 1,834
Posted By Unca Fud
It won't rust thru 'cause it's brass!

It won't rust thru 'cause it's brass!
Forum: Face plant 02-26-2013, 09:43 PM
Replies: 47
Views: 7,621
Posted By Unca Fud
Do you have deer in the area? An incredible...

Do you have deer in the area? An incredible road!:clap
Forum: Face plant 02-07-2013, 05:57 PM
Replies: 95
Views: 18,312
Posted By Unca Fud
Andy - See post 77. Is the MSF officially...

Andy - See post 77.

Is the MSF officially still teaching starts on a hill the same way? or is this something that was a hang up of the local instructor? The daughter is getting interested again.
Forum: Face plant 01-30-2013, 11:31 AM
Replies: 95
Views: 18,312
Posted By Unca Fud
Add 202. Daughter - 120 lbs after MSF course....

Add 202. Daughter - 120 lbs after MSF course. Driving her new-to-her Honda CX500 starting on a slight hill after putting both feet down per MSF instruction. Bike rolls backward and down she went. ...
Forum: Face plant 12-18-2012, 10:33 AM
Replies: 48
Views: 8,769
Posted By Unca Fud
Quite a descriptor! Glad to hear you came...

Quite a descriptor!

Glad to hear you came out pretty much OK but sorry to hear of the mess it made of yr R65.
Forum: GS Boxers 12-12-2012, 03:26 PM
Replies: 17
Views: 1,653
Posted By Unca Fud
From my fatigue experience before retirement w...

From my fatigue experience before retirement w needle bearings, (OK this is a tapered roller bearing but it is similar to a needle) to make them last, they should not be preloaded - at all or they...
Forum: Face plant 09-12-2012, 10:54 AM
Replies: 830
Views: 213,410
Posted By Unca Fud
Re: The .pdf file on the NHTSA summary report. ...

Re: The .pdf file on the NHTSA summary report.

Are there any engineering sorts here that have ever heard elsewhere of "forced fracture"? I have not in my 45 years in fatigue testing.
MN...
Forum: GS Boxers 08-18-2012, 02:10 PM
Replies: 81
Views: 8,370
Posted By Unca Fud
If you are going to experiment with one of the...

If you are going to experiment with one of the races being a non-metallic bearing material, I'd suggest DuPont's Vespel or Amoco's Torlon. I'd think Nylon to be too soft to last.

The present...
Forum: GS Boxers 08-15-2012, 11:14 AM
Replies: 81
Views: 8,370
Posted By Unca Fud
I set mine so t hat there is just the tiniest...

I set mine so t hat there is just the tiniest amount of detectable clearance - with the lock nut tightened. There is no need for these to be preloaded. My opinion.............:rofl
Forum: GS Boxers 07-31-2012, 11:19 AM
Replies: 20
Views: 1,342
Posted By Unca Fud
Is there a spacer underneath the wheel that has...

Is there a spacer underneath the wheel that has been omitted somewhere along the line? Are you bottoming one or more of the bolts in their threaded hole(s)? If only three of the four bolts are...
Forum: Face plant 07-24-2012, 06:04 AM
Replies: 830
Views: 213,410
Posted By Unca Fud
The parts were complex & CNC machined from a...

The parts were complex & CNC machined from a large heat treated forging of 7075. They cracked after machining - before any loads were applied - simply sitting there. DX was overaging.
Forum: Face plant 07-23-2012, 10:41 AM
Replies: 30
Views: 6,657
Posted By Unca Fud
A ggod graphic reminder. THX:clap

A ggod graphic reminder. THX:clap
Forum: Face plant 07-19-2012, 07:26 PM
Replies: 830
Views: 213,410
Posted By Unca Fud
When I first saw the pictures of the failure way...

When I first saw the pictures of the failure way back, it strongly reminded me of a brittle fracture of a high strength aluminum casting caused by over-aging (too much time at an elevated...
Forum: Face plant 05-19-2012, 08:20 AM
Replies: 43
Views: 8,553
Posted By Unca Fud
At 73 yrs old, BLU HWY got me dizzy just watching...

At 73 yrs old, BLU HWY got me dizzy just watching his video! Nice crisp turn entries & exits. Enjoyed anyway!
Showing results 1 to 40 of 240

 
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