Sydney to London on a105cc Honda callled Dot

Discussion in 'Epic Rides' started by nathanthepostman, May 4, 2009.

  1. gongnomore

    gongnomore Tetley

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    Finished the UK version of your book after having already read the Australian one, it was great to go through the journey again and it's highly recommended reading. Led me to stalk your facebook pictures of the trip that weren't on the thread or in the book, top stuff.
  2. nathanthepostman

    nathanthepostman Been here awhile

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    Apr 28, 2009
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    Haha, you weirdo.

    Just to mention with regards the rebuild; I followed the advice on here and drained the oil after about 60 miles or so. I also took off the clutch cover in order to inspect the filter gauze. Glad I did. There were bits of fluff, shards of wire wool, gunk... so I've cleaned it out, re-assembled and will change again in another hundred or so.

    The wire wool must just have been picked up from the work bench by that spinning magnetic thing. Hope it's not done any harm.

    Had issues with valve clearance as well. Manual instructs to line up the 'T' on the 'alternator' with the arrow in the 'crank case' (think I've got that right), but in doing that it just seemd too sloppy. Making too much noise. Having snapped the thread on one of the valve covers and been to buy some more from the local bike shop, he advised to rotate the engine until the top valve was completely in, then adjust the bottom valve. And then reverse to do the top one. It seems to be a lot better, with just a touch of noise from that and the cam chain.

    Hopefully the rain will stop and I can take her for a good run.
  3. Adv Grifter

    Adv Grifter on the road o'dreams

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    Yea, you made the common mistake of being 180 degrees out ... and not on the compression stroke.

    If valve clearance is set correctly, then at TDC (on the timing mark) on the compression stroke .... BOTH valves should wiggle a bit when you move them up and down. (that wiggle is your clearance)

    It is in that position you need to measure clearances and set them. There is some technique to getting screw adjusters just right.
    Sometimes, you measure and clearance is good. But then ... after you tighten down nut ... the clearance changes some. (tightens up) This is typical.

    Various ways to deal with this. Some leave the feeler gauge in place, then tighten down adjuster. Some set valve just a bit loose, then tighten and hope it tightens up just enough to be perfect. Practice makes perfect.

    I would set valves to the middle of spec for Run-In. Once everything is fully run in and stable, then you can set them to minimum gap. And there they will stay. Makes for quiet valve gear and top end. All modern Japanese motors come from the factory at minimum valve clearance. They like quiet motors!

    Good move on cleaning out the crud in the motor. Hopefully things will clean up by next oil change.
    Also ... I would install a Magnetic Drain Plug! Could save the motor if something is rattling around in there.
  4. nathanthepostman

    nathanthepostman Been here awhile

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    610
    Okay Grifter, talk me through it.

    At minute I've got valves adjusted using method mentioned previously; rotate 'til top valve is all the way in, check bottom valve. And vice verse.

    Been for a run today and she just doesn't feel quite right.

    Could you talk me through it, step by step, as though I'm a moron so that there's no confusion.

    Like, how do I know that I'm 180 degrees out or not?

    And because I've perhaps now got the clearance wrong, how will I know for sure that I've rotated it to the right place and that both valves should wiggle at the same time.

    Perhaps best to reset and start again from scratch

    And this has to be done on a cold engine right?

    ... and a magnetic sump plug has been fitted, which did seem to have done it's job.
  5. bonzodg

    bonzodg 24/7 B-road hooner

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    Guiseley, Yorkshire, U K
    Hi,Nathan
    Baffled about 180 out being a problem.
    Every second crank rev it's always at 180,the next rev brings it to 360 again!
    If you're checking the valve clearances,take off the tappet covers,choose a valve to check.
    Turn the flywheel until the chosen valve is fully pressed in.
    Now turn the crankshaft(flywheel)one full revolution,this will turn the camshaft a half rev so the cam lobe will be totally away from the cam follower.
    This applies to all 4strokes I've ever worked on.
    Hope this is what you need to know
  6. bonzodg

    bonzodg 24/7 B-road hooner

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    AND.............................
    if you need to check the camshaft timing with the crankshaft -
    turn the crankshaft until both valves are rocking(one going in,one coming back out)
    Put a slim screwdriver in the spark plug hole and press it against the top of the piston.
    It should be at the top of its stroke.
    This is a bloody good 'rule of thumb' way to check,though some camshafts are set very slightly off top dead centre.
    Good luck!
  7. nathanthepostman

    nathanthepostman Been here awhile

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    Apr 28, 2009
    Oddometer:
    610
    Now I'm baffled.

    As they say here in England, and perhaps in other parts of the world as well; there's more than one way to skin a cat. And it seems with valve clearance that's also true as well.

    Going to sit down later, take my time over the manual, try and figure it all out and try again once she's cooled.

    Just answer me this; how many passes can the 'T' make past the marker before it has completed one 'cycle'; is it two?

    And lastly, to anyone who might be wondering why this has become a mechanical seminar and not a ride report, I can only apologise. Sorry.
  8. Adv Grifter

    Adv Grifter on the road o'dreams

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    YES! Two revolutions. Always rotate the motor FORWARD .... as in the drive direction. (use kick start to determine which direction is forward) When rotating, never go back.

    I would not use a screw driver down the spark plug hole ... but the idea is good. Use a chop stick or some such, don't let it break off. When rotating, you will come round to the compression stroke and your chop stick will rise UP as piston come to TDC. At this point line up timing mark. Once there, you are ready to check valve clearances.

    If you have adjusted valves when not on compression stroke at TDC, then your current valve setting may be all screwed up and will need to be re-set when at TDC on compression stroke.

    Reading the manual is good ... but not always easy to understand.

    Good luck!
  9. Brainflex

    Brainflex Adventurer

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  10. bonzodg

    bonzodg 24/7 B-road hooner

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    Nice one,Brainflex - wish I'd flexed MY brain and checked youtube!

    Liking this video Nathan,same message,different 'language' -

    whichever gets the message across clearly to you,eh?

    Cheers
  11. nathanthepostman

    nathanthepostman Been here awhile

    Joined:
    Apr 28, 2009
    Oddometer:
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    I got it I got it!!

    ...if both valves are wiggly then you're on the compression stroke; adjust clearance accordingly.

    A bit slack first time, but just re-done and it seems I'm about there. The nuance of 1/8 turn really does make a difference.

    Now, as they say in India; full power 24 hour!

    Cheers for all the help guys.
  12. Mr. Fisherman

    Mr. Fisherman PROUD 2B Riff Raff!

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    So whats the next big adventure?
  13. platypus121

    platypus121 CT.110 NZ

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  14. RDT953

    RDT953 Been here awhile

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  15. nathanthepostman

    nathanthepostman Been here awhile

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    Haha, that's awesome.

    Good old Ed. He'll do it no problems.
  16. bk brkr baker

    bk brkr baker Long timer

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    No nessesarily. TDC comes up twice per combustion cycle. Ergo the valve tappets will get wiggly twice.

    To be sure you're on the right stroke place your finger on the exhaust tappet. When you feel it go down and return , stop at TDC and adjust the valves.

    Good wrenching to you.
  17. platypus121

    platypus121 CT.110 NZ

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    Bad advice !

    Nathan had it right.

    At the top of the "wrong" TDC (end of the exhaust stroke), the exhaust valve will still be open a little.
    So no wiggle of the exhaust rocker arm at this TDC.

    It is only at the TDC at the end of the compression stroke that both rocker arms have free play and this is the point at which they should be adjusted.

    PS
    It's hard to get the motor to stop at exactly TDC - it wants to move one way or 'tuther, but there's no need to be to paranoid about getting the
    absolute TDC point (other than getting the correct one, that is). The rockers will have no pressure on them from the cam for a few degrees before and
    after TDC so there's a bit of leeway with the setting point.

    Cheers,
    Bernard
  18. rthuey

    rthuey twist your wrist!!!

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    insanity is not as easy as i make it look
    Out of an estimated 20,000 threads (40 per line x 500 pages) Yes i see that there are 733 pages, a bunch seem to have been moved.

    There are currently only 11 Ride Report threads that can claim the additional fame of being members of the 1 million + views club.

    Glen is way closer to his 3 millionth view than the 1 mark. :clap
    Doug is here twice...looks like your dirtster is a bit more popular than the panhead.
    Clayton appears to engage his readers so much in his stories that they are to mesmerized to reply.

    Would be great if the mods could let us know how many subscribers each of them have.

    Thread Title - Start Date n Time - Replies - Views
    Striking Viking bumming the world (On the road again) 05-12-2004, 01:43 AM 7,022 2,988,422
    Quit my job to go on a "little" ride....US Tour '07 02-11-2007, 12:42 AM 5,363 1,837,533
    Seattle to Argentina on a KLR650 05-07-2006, 05:01 PM 1,264 1,610,653
    The BAM Road - ultimate test of man and machine 12-14-2009, 08:00 AM 1,646 1,538,485
    Can a Harley make it to Magadan? 04-27-2011, 03:04 PM 2,490 1,441,766
    The Mobius Trip 05-23-2008, 06:33 PM 4,880 1,367,401
    From Estonia with love (Round the World awesome ADVenture!!) 06-30-2009, 11:05 AM 2,559 1,318,875
    Angola, it's not like they said. 09-23-2007, 03:40 AM 1,175 1,237,584
    Sydney to London on a105cc Honda callled Dot 05-04-2009, 07:47 AM 2,878 1,204,865
    Siberian Extreme 2010 - Back for More 07-21-2010, 08:27 AM 1,820 1,076,804
    The WRONG Way Round.... on a Chopper! 05-07-2009, 07:26 PM 1,583 1,067,433
  19. MaverickAus

    MaverickAus Been here awhile

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    Hi Nathan,
    nice to meet you in Ballina, hope you enjoy Byron Bay and your trip home hope it isn't too wet (like it is here).
    Cheers
    Garry
    [​IMG]
    [​IMG]
  20. kwakbiker

    kwakbiker Been here awhile

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    hey, that footwear isnt converse:evil