1. After 20+ years it's time to pass the torch. If you are interested in acquiring this forum please contact support@cv-performance.com for details. Any spam will be reported and blocked.
  2. Welcome to Bike Talk, a forum for all bikers and motorcycle enthusiasts. If you are new to Bike Talk, be sure to register for free and join the conversation.

    There's always someone around willing to help out with questions or give a friendly wave back. All Harley and metric riders are welcome.

Pitch n Dive

Discussion in 'Motorcycle Tech Talk' started by Sir Rat, Jun 5, 2013.

  1. Sir Rat

    Sir Rat Active Member

    Joined:
    Dec 8, 2012
    Messages:
    190
    Likes Received:
    2
    Location:
    Oahu Hawaii
    I've noticed my front end has a slight tendency to pitch and dive a little when cornering at higher speeds. This only occurs on long sweeping curves that I can hit at about 70 mph at get a good lean on the bike. Its not real severe, but it is unsettling enough to cause me to back off the throttle in order to maintain stability. Anybody else ever experience something like this?

    Aloha.....Mike
  2. Red Rider

    Red Rider Well-Known Member

    Joined:
    Jul 5, 2006
    Messages:
    1,930
    Likes Received:
    134
    Location:
    Churchill County, NV
    I don't know exactly what you mean by "pitch n dive", but my '99 FLHR had problems with long sweeping turns at speeds above 60MPH. Caused instability and death wobble. I installed a "Bagger Brace" to stiffen the frame up and the problem is gone. Of course, that was after eliminating the other suspect items (tires properly inflated being #1, #2 rear and front wheel alignments, #2 possible frame or frame brace damage).
  3. charlie46

    charlie46 Well-Known Member

    Joined:
    Mar 4, 2010
    Messages:
    2,069
    Likes Received:
    105
    Location:
    Melbourne Fl
    +1. Yep as R.R. said. Gotta fix it 'cause it's gonna get worse. JMO
  4. Lucifer

    Lucifer Well-Known Member

    Joined:
    Mar 20, 2008
    Messages:
    3,861
    Likes Received:
    102
    Location:
    Cape Breton NS,Canada
    Worn swing arm bushings is another thing to check...
  5. Sir Rat

    Sir Rat Active Member

    Joined:
    Dec 8, 2012
    Messages:
    190
    Likes Received:
    2
    Location:
    Oahu Hawaii
    Thanks Lucifer but with just under 12,000 miles on the clock, I would hope my swing arm bushings are still good.

    Lets say I'm running my line through a long sweeping left turn, the bike will start to pitch or turn itself deeper into the turn than the line I have picked. Now I have to correct the lean angle to get back on to my line. Once I'm back on my line the bike will once again turn into the turn causing me to once again correct my lean. I don't know how else to describe it.

    Aloha....Mike
  6. hotroadking

    hotroadking Super Moderator Staff Member

    Joined:
    Jun 16, 2004
    Messages:
    13,682
    Likes Received:
    584
    Location:
    Mouseville USA
    sounds like the rear is stepping out, over steer for a car or "loose" if yer nascar...

    Loose is when the back end of the car hits the wall first
    tight is when the front end of the car hits the wall first...

    Check rear wheel alignment, tire wear, air pressure both front and
    rear, are you loaded up in the rear besides yourself with full bags
    of crap you really dont' need?
  7. Fatboy128

    Fatboy128 Well-Known Member

    Joined:
    Mar 23, 2011
    Messages:
    6,713
    Likes Received:
    408
    Location:
    Long Island, NY
    Yer not smokin that Maui Wowee while ridin are ya?!
  8. Red Rider

    Red Rider Well-Known Member

    Joined:
    Jul 5, 2006
    Messages:
    1,930
    Likes Received:
    134
    Location:
    Churchill County, NV
    OK, that sounds just like I had, as far as symptom. It eventually caused me a death wobble that slammed me into a concrete center divider near 70MPH. My engine guard collapsed against it and knocked the wobble out of the bike, so I never went down and I rode home. Story aside, ya gotta get this addressed if you plan on taking any sweeping turns at speed. As others and I have said, it could be a lot of things. But if you eliminate them, it may just be your bike is one of the 1996 -2008 FLH-series bikes that needs to be braced. There are many manufacturers of bike frame braces, but I went with Bitchin Baggers - The Bagger-Brace and am really glad I did. The brace is largely invisible when installed, which is a shame because it is a beautifully machined device. It is also likely the most expensive brace, but you pay for real quality in this case.
    :cheers:
  9. FLHTbiker

    FLHTbiker Moderator Staff Member

    Joined:
    Nov 3, 2004
    Messages:
    18,516
    Likes Received:
    252
    Location:
    Oregon
    The brace Red Rider mentioned is a very good addition to your bike. Have not seen it mentioned yet or may have missed it but have you checked your head bearing in the neck. If they become loose it will give you the same problems. Even if you install a brace I would difinitely check the head bearing and be sure its greased and torqued properly.
  10. hotroadking

    hotroadking Super Moderator Staff Member

    Joined:
    Jun 16, 2004
    Messages:
    13,682
    Likes Received:
    584
    Location:
    Mouseville USA
    before you brace stuff up, be sure everything else is in order
    rear tire has sufficient tread, and properly aired up
    front tire same tread, proper air,
    engine aligned,
    cleve blocks and rubber do-nuts updated

    one you know every thing is aligned be sure
    you haven't put too much weight on the back, drop off two or three of the asian strippers before cornering..

    Be sure the neck bearing is setup right...
  11. Sir Rat

    Sir Rat Active Member

    Joined:
    Dec 8, 2012
    Messages:
    190
    Likes Received:
    2
    Location:
    Oahu Hawaii
    Not my Asians...Nooooooooo Wayyyyyy!! :fight:

    @5'9" and 260lbs I've definitely got too much weight somewhere. More in the front than in the back I pretty sure.

    Will try the easy stuff first and work my way up. Hopefully I can resolve the issue before I get to the steering head bearings...looks like a real PITA to get to them. I'll check tire & rear shock air pressure, and unload my bags tomorrow. There is plenty of tread left on my Metzlers, but there are some of those little surface cracks on the sidewalls that come with age.

    HRK What is a cleve?...I thought it was a verb used to describe the act of a woman when she lifts and presses her breasts together in order to produce clevege, either manually or with the assistance of some sort of brassier.

    cleve, clevege, cleveged :devil:

    Aloha....Mike

Share This Page