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

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  #1  
Old 9th June 2010
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Default Triple Tree to Frame Lock Loops?

Does anyone know when HD starting adding the padlock loops to the frame and the bottom triple trees?

I have a -52a tree w/o loop and a 66 frame with them. Quite possibly could have been cutoff by the PO, but...

Just curious.
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  #2  
Old 9th June 2010
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The frame had the loop as far back as the k model days. it was originally used to mount the steering damper. i myself am also curious about when they started to add the lock tab to the lower tree. they still used the steering damper in 1966, so the tree wouldn't have had the lock tab. both of my '69 xlch's have the lock tab. so they added it sometime between 1966 and 1969. hopefully someone has the answer because i am restoring a 1967 xlch and need to know if my lower tree needs the lock tab. i suspect it was added sometime in 1967.
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  #3  
Old 10th June 2010
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Default

What an exciting thread....Well maybe not but...

Been scouring the parts books and the 54-65 K/Sportster book shows a -54A tree without. The 54-78 book shows 70 and earlier front end as a separate piece called "Fork Lock Bracket" with part number of 45724-68A. Seems as if it is a bolt or weld on piece. The 71-72 front end shows that too. As well as the 73-74 too. Plus the 75 up.

Think Magneto Sportster is pretty close with 67 or 68 being the year based on the part number ending in 68A.

So in summary the my 62 project is proper without.

Not sure why the 69s have it for security...They already have a Tillotson.
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  #4  
Old 10th June 2010
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Yes, that's the correct triple tree for your bike. Magneto, I will go look at my 68 and see if the triple tree has the lock tab as soon as this freakin' rain stops! (It's been raining here for about a month and a half).
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  #5  
Old 22nd August 2017
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was just looking on ebay for a nos 45724-68A fork bracket but no joy. guess I will cut one off a an old -52A tree I have that is already butchered by someone else. would rather have the lock tab than the dampner.
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  #6  
Old 22nd August 2017
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I was curious as well because I don't have one on the tree either. Does it attach to the small hole somehow?.
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  #7  
Old 22nd August 2017
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no. it is a weld on tab. look at a later year tree and you will see it. the -78b parts catalog shows it. do an ebay search for lower triple tree and you will find a picture of one on the tree. the lock goes through the tab welded to lower tree and then through the loop on frame where the steering dampner would have gone. later 33.4 and then the 35mm trees have them until maybe 79-82. don't know where they changed it. I'm guessing they sold the part separately so that earlier bikes could be retrofitted.
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  #8  
Old 23rd August 2017
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the 67's in my shed has one. 62 XLH doesn't and the 64 XLCH basket doesn't.
I know of a 66 XLCH in my hood so I'll try to catch up with it's owner tomorrow.
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  #9  
Old 23rd August 2017
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Quote:
Not sure why the 69s have it for security...They already have a Tillotson.
Yeah, who WOULD steal a bike with a Tilly ?
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  #10  
Old 24th August 2017
MXHD55U MXHD55U is offline
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Quote:
Originally Posted by 16ouncePBR View Post

Not sure why the 69s have it for security...They already have a Tillotson.
Now that's funny right there
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