Register

User Tag List

Thanks Thanks:  0
Likes Likes:  0
Dislikes Dislikes:  0
Results 1 to 10 of 10

Thread: H25 and HS40

  1. #1
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0

    H25 and HS40

    Itchin to do up some motors (been awhile now)so i picked up these two today. Lovin the lil H25 as it looks barely used after I started wiping all the crud off it. Hopefully i get some time tomorrow and pop the head off.
    H25 is H25 25196H 1972 and the other is HS40 55459E 1975.








  2. #2
    Senior Member Sprocket86's Avatar
    Join Date
    May 2010
    Location
    London, Ontario, Canada
    Posts
    511
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Nice finds! I'm on the hunt for another vintage HS40 or HS50.

    It's interesting to see a non side popper exhaust configuration on the lil H25 engine.

    Looks like you've got some scrubbing ahead lol

  3. #3
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    I mean to ask about the speed control brackets. Did the HS motors always have this pointer lever or did it change at some point? And why?


  4. #4
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by Sprocket86 View Post
    Nice finds! I'm on the hunt for another vintage HS40 or HS50.

    It's interesting to see a non side popper exhaust configuration on the lil H25 engine.

    Looks like you've got some scrubbing ahead lol
    Oh yes. Its mainly an oily loose grim though. Kinda wipes off.

  5. #5
    Senior Member Sprocket86's Avatar
    Join Date
    May 2010
    Location
    London, Ontario, Canada
    Posts
    511
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Some cans of brake clean and compressed air will make those blocks clean up real nice!

    I think the throttle levers are of two different "mini bike" specific designs. I believe both have the spring return feature for twist throttle action.

  6. #6
    Senior Member markus's Avatar
    Join Date
    Apr 2008
    Location
    Southwest Florida
    Posts
    10,145
    Mentioned
    14 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by JohnnyTillotson View Post
    I mean to ask about the speed control brackets. Did the HS motors always have this pointer lever or did it change at some point? And why?

    They converted to style on the right in your photo in 1974, Probably changed to simplify production, You will note that fixed throttle style units from 1974-up are mostly the same pieces but have a detent tab and lever/knob pressed in instead of the loose end that can hold the barrel clamp for the cable. Some of the extra holes stamped into the bracket also held shut off switches on the fixed throttle versions. You get a much stronger spring return with those style units.....when the spring assembly is there (yours is missing).


    The one on the left is from early part of 1971 into 1974

  7. #7
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Took a look inside the H25. Nice.




    This thing looks like its never run.

  8. #8
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Quote Originally Posted by markus View Post
    They converted to style on the right in your photo in 1974, Probably changed to simplify production, You will note that fixed throttle style units from 1974-up are mostly the same pieces but have a detent tab and lever/knob pressed in instead of the loose end that can hold the barrel clamp for the cable. Some of the extra holes stamped into the bracket also held shut off switches on the fixed throttle versions. You get a much stronger spring return with those style units.....when the spring assembly is there (yours is missing).


    The one on the left is from early part of 1971 into 1974
    Ok I see. Thanks, Sensei

  9. #9
    Senior Member Sprocket86's Avatar
    Join Date
    May 2010
    Location
    London, Ontario, Canada
    Posts
    511
    Mentioned
    2 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Wow, zero carbon deposits. There is no way this ran on gasoline lol. That aluminum cylinder looks mint!

  10. #10
    JohnnyTillotson's Avatar
    Join Date
    Sep 2014
    Location
    oyster bay, ny
    Posts
    3,383
    Mentioned
    1 Post(s)
    Tagged
    0 Thread(s)
    Rides
    0
    Last weekend I got the '72 H25 running. Well, on starter fluid at least. But man look how clean thing was under the blower housing and flywheel! If its not NOS it certainly wasn't used at all. I'm just not used to this inside the rust buckets i pick up.










 

 

Tags for this Thread

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •