The Sportster and Buell Motorcycle Forum - The XLFORUM®
 

Go Back   The Sportster and Buell Motorcycle Forum - The XLFORUM® > SPORTSTER MOTORCYCLE FORUM > Sportster Motorcycle Era Specific and Model Specific > Ironhead Sportster Motorcycle Talk (1957-1985)
XLF Blogs XLF Arcade XLF Disclaimer/Privacy Statement/Terms Of Use

Notices

Ironhead Sportster Motorcycle Talk (1957-1985) For all those that wanna talk about Ironhead Sportster Motorcycles

Active Threads
0 tapped adjust
Last Post: needspeed
Posted On: 1 Minute Ago
Replies: 6
Views: 202
0 Matrix brakes
Last Post: tonystylec
Posted On: 27 Minutes Ago
Replies: 4
Views: 68
0 PLEASE READ THIS Before You Post In 'The BUY - SELL - TRADE Zone'!
Last Post: Folkie
Posted On: 38 Minutes Ago
Replies: 1
Views: 88
6 ironhead turn signals
Last Post: 19ironhead75
Posted On: 1 Hour Ago
Replies: 0
Views: 9
0 Mustang Seat FS
Last Post: 60Gunner
Posted On: 1 Hour Ago
Replies: 1
Views: 15
0 Opinions (On Bike Considering Buying)
Last Post: Racepres
Posted On: 1 Hour Ago
Replies: 8
Views: 240
0 New Jagg oil cooler adapter for 2004+ Sportsters
Last Post: salmanmr
Posted On: 1 Hour Ago
Replies: 6
Views: 1,362
0 The salty debate thread.
Last Post: DEEP DIVER
Posted On: 1 Hour Ago
Replies: 40
Views: 1,436
0 MPG HONESTLY, what do you get?
Last Post: Tomcatt
Posted On: 1 Hour Ago
Replies: 609
Views: 87,259
0 Kick starter resistance
Last Post: metal88
Posted On: 1 Hour Ago
Replies: 14
Views: 317
0 79-85 Breather Vent Mod - Adding a Secondary Vent Hose at 6:00 Position
Last Post: Hippysmack
Posted On: 2 Hours Ago
Replies: 11
Views: 374
0 Ultima electronic ignition installation - Solved
Last Post: darwin-t
Posted On: 3 Hours Ago
Replies: 76
Views: 2,655
0 What did you do for your sporty Today?
Last Post: Crusty
Posted On: 3 Hours Ago
Replies: 7,150
Views: 1,040,329
0 1200S race bike miss at 3500-400
Last Post: ftwflh
Posted On: 3 Hours Ago
Replies: 28
Views: 525
0 Static timing
Last Post: ftwflh
Posted On: 3 Hours Ago
Replies: 7
Views: 329
0 how to check cam postion sensor
Last Post: ftwflh
Posted On: 3 Hours Ago
Replies: 10
Views: 380
0 Hello New in the Forum
Last Post: Dosmie72
Posted On: 4 Hours Ago
Replies: 12
Views: 152
0 Hottie of the day, no nudity.
Last Post: trainman
Posted On: 4 Hours Ago
Replies: 22,075
Views: 2,259,223
0 Fuel Pump Problems
Last Post: Lowe175
Posted On: 5 Hours Ago
Replies: 258
Views: 165,734
0 ....1
Last Post: Graywolf
Posted On: 6 Hours Ago
Replies: 5,814
Views: 333,895
0 Potential future changes for the Sportster motor?
Last Post: Nibelungen
Posted On: 6 Hours Ago
Replies: 43
Views: 1,771
0 What's your opinion on windshields?
Last Post: boomerguy
Posted On: 7 Hours Ago
Replies: 1,247
Views: 221,641
0 Do you use premium gas in your Sportster?
Last Post: XL1275
Posted On: 10 Hours Ago
Replies: 1,837
Views: 389,879
0 KT - 2020 - Where Eagles Dare
Last Post: IXL2Relax
Posted On: 15 Hours Ago
Replies: 60
Views: 14,002
0 Which cams ?
Last Post: rocketmangb
Posted On: 15 Hours Ago
Replies: 15
Views: 2,083
0 Anyone go racing last weekend?
Last Post: Tinz
Posted On: 15 Hours Ago
Replies: 3,222
Views: 332,445
0 Front end restoration
Last Post: Dosmie72
Posted On: 15 Hours Ago
Replies: 8
Views: 473
0 Accelerator nozzle and idle not right
Last Post: IXL2Relax
Posted On: 15 Hours Ago
Replies: 66
Views: 2,660
0 2020 east coast meet and greet.
Last Post: mick42
Posted On: 16 Hours Ago
Replies: 215
Views: 17,818
0 This is gonna hurt.
Last Post: hexnut
Posted On: 16 Hours Ago
Replies: 8,167
Views: 1,743,413
More...
Members Birthdays
Reply
 
Share Thread Tools Display Modes
  #11  
Old 4th August 2020
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 400
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

OK, here's a hypothetical question: Would changing over from ball bearings to Timken tapered roller bearings give me a little 'tighter' steering stem than the OEM balls???

My thinking is that more contact area from the rollers would be a slight bit more resistance, assuming the 'fall away' pressure is the same.
__________________
All of old. Nothing else ever. Ever tried. Ever failed. No matter. Try again. Fail again. Fail better. -- Samuel Beckett
Reply With Quote
  #12  
Old 4th August 2020
Maxeffort's Avatar
Maxeffort Maxeffort is offline
Momentary Specialist
 
Join Date: Aug 2016
Posts: 863
Sportster/Buell Model: XL1200
Sportster/Buell Year: 1996
Other Motorcycle Model: ST1100
Other Motorcycle Year: 1999
Reputation: 1451966
Maxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond reputeMaxeffort has a reputation beyond repute
Default

Quote:
Originally Posted by ferretface View Post
OK, here's a hypothetical question: Would changing over from ball bearings to Timken tapered roller bearings give me a little 'tighter' steering stem than the OEM balls???

My thinking is that more contact area from the rollers would be a slight bit more resistance, assuming the 'fall away' pressure is the same.
Sure, you could adjust preload very easily and incrementally with tapered roller bearings.

I think something else is up.

It sounds like you have a dangerous ride at this point.

You haven’t answered if the set up is stock.
Ride height, rake, etc...
Is it lowered, or extended, or uneven front to back?
With you sitting on the bike is the bottom frame tube parallel to the ground?

How is the alignment front wheel to back. Is something skewed or twisted?

My bike has the same frame and steering, it’s not set tight and exhibits no such issue at all. I use plenty of front brake all the time and never a problem.
__________________
“This life’s hard, but it’s harder if you’re stupid”
Reply With Quote
  #13  
Old 4th August 2020
randy3934's Avatar
randy3934 randy3934 is offline
Senior Custom Bike Builder
 
Join Date: Dec 2011
Location: under a roof
Posts: 2,935
Sportster/Buell Model: xlh 1000 69 79 xlch
Sportster/Buell Year: 1977
Sportster/Buell Model #2: 80 FXE 82FLH 83FXR
Other Motorcycle Model: 78FLH 79xlch 96xl 79xlh
Reputation: 146487
randy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant futurerandy3934 has a brilliant future
Default

83 has timkens
__________________
I'm not a complete idiot, some parts are missing. not enough room to list all my harleys.
Reply With Quote
  #14  
Old 4th August 2020
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 400
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

Quote:
Originally Posted by Maxeffort View Post
You haven’t answered if the set up is stock.
Ride height, rake, etc...
Is it lowered, or extended, or uneven front to back?
With you sitting on the bike is the bottom frame tube parallel to the ground?
How is the alignment front wheel to back. Is something skewed or twisted?
My bike has the same frame and steering, it’s not set tight and exhibits no such issue at all. I use plenty of front brake all the time and never a problem.
Cycle is all stock, frame is good, alignment is good. Bearing adjustment is to spec. Everything looks good.

Quote:
Originally Posted by randy3934 View Post
83 has timkens
Thanks! I looked in the parts book but I was looking at the wrong schematic. From the schematic of the fork you can't tell if balls or rollers; the schematic of the frame clearly shows rollers. My bad!
Reply With Quote
  #15  
Old 5th August 2020
Iron Mike Iron Mike is offline
Master Bike Builder
 
Join Date: Dec 2014
Location: Phoenix
Posts: 2,001
Sportster/Buell Model: xlch
Sportster/Buell Year: 1964
Sportster/Buell Model #2: XLCH IR EFI
Sportster/Buell Year #2: 1971
Other Motorcycle Model: BMW K1200RS
Other Motorcycle Year: 2001
Reputation: 1228892
Iron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond reputeIron Mike has a reputation beyond repute
Default

Quote:
Originally Posted by ferretface View Post
Cycle is all stock, frame is good, alignment is good. Bearing adjustment is to spec. Everything looks good.
Take note, the fall away shoud not flop until AFTER 1" from center but BEFORE 2". With bike level.
Reply With Quote
  #16  
Old 5th August 2020
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,490
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 1233851
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

Check your static ride height. Check for stiction on the suspension. problems with rebound dampening will effect ride height. Springs too soft or "sagged" will effect ride height and compression rebound as well as damping rebound.

Coming in to a turn you (generally) apply the front brake, lowering the front of the bike. This changes the fork geometry (changes the trail).

With the wrong rim profiles, wrong or worn out tires this can make the front wheel want to "tuck in".

Also jumping on the brakes reduces the weight on the rear tire reducing grip. It also reduces ground clearance and if something now touches the road surface (exhaust system, side stand) you are now about to fall off in turn 1.

In the future do all of your braking before you make the turn. As you enter the turn keep slightly ON the throttle. As you hit the apex open the throttle and accelerate out of the turn. Now see how your lap times have gone down, not you.

OR: Just find and fix the problem. (Maybe do both ?)
__________________
"I know only too well the evil that I propose. But my inclinations get the better of me."
Reply With Quote
  #17  
Old 5th August 2020
Ferrous Head's Avatar
Ferrous Head Ferrous Head is offline
Blind Owl
 
Join Date: Jun 2009
Location: Sunshine Coast
Posts: 5,490
Sportster/Buell Model: XLB, XLCH, Sporton
Sportster/Buell Year: 1962
Sportster/Buell Model #2: XLCH
Sportster/Buell Year #2: 1966
Other Motorcycle Model: XLCH (Another one)
Other Motorcycle Year: 1966
Reputation: 1233851
Ferrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond reputeFerrous Head has a reputation beyond repute
Default

OH. A LOT of what appear to be front suspension problems turn out to be rear suspension problems.
Reply With Quote
  #18  
Old 6th August 2020
ferretface's Avatar
ferretface ferretface is offline
XL FORUM TEAM MEMBER
 
Join Date: Jun 2019
Posts: 400
Sportster/Buell Model: XLH
Sportster/Buell Year: 1983
Reputation: 73106
ferretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud offerretface has much to be proud of
Default

Quote:
Originally Posted by Iron Mike View Post
Take note, the fall away shoud not flop until AFTER 1" from center but BEFORE 2". With bike level.
OK, got the tank off, loosened the stem pinch bolt, and adjusted the 'preload'. One thing not mentioned in the FSM was to loosen the two bottom triple tree pinch bolts before adjusting the stem nut (and tighten them afterward).

I tightened the stem nut as Iron Mike described above. It took not quite a quarter turn to take up the slack to Iron Mike's spec.



I'll put off disassembling the front end & re-packing the bearings for a while. I hope a test ride will tell me if I'm on the right track.

New battery finally came in (one in it took a dump) and I got a 20 mile test ride in. No dramatic change, handling is still the same, stopping may be a bit steadier. Hard to tell, as the footpegs always seem to be right where I want to plant my legs. Very awkward stops. Having 70 year old joints doesn't help either.

Last edited by ferretface; 8th August 2020 at 18:18..
Reply With Quote
Reply

Bookmarks


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



All times are GMT +1. The time now is 18:24.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2020, vBulletin Solutions Inc.
XL Forum® - Linson Media LLC