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Author Topic: upper tripple tree fab ques.  (Read 1615 times)

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Offline cafe2be

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upper tripple tree fab ques.
« on: January 19, 2009, 06:03:27 AM »
in my adventure to mount clip ons to my 77 cb750f, I would like to modify the original upper tree. I would like to eliminate the raised pieces that hold the OEM handle bars. I was all ready to cut the off, then noticed that there hollow. Are these aluminum? Could I cut and grind the section not needed and then have the refilled with alum. (sancast). Do any years come with solid upper trees that could be cut and smoothed?
Thanks
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Offline super pasty white guy

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Re: upper tripple tree fab ques.
« Reply #1 on: January 19, 2009, 06:14:44 AM »
http://forums.sohc4.net/index.php?topic=15615.msg207527#msg207527

Don't know for sure if that'll answer your question, but it's a start.  I seem to remember someone else doing it on a 550/750, but I'm not dedicated enough to do the full on search for it.

spwg
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Offline hymodyne

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Re: upper tripple tree fab ques.
« Reply #2 on: January 19, 2009, 06:57:57 AM »
checkout earache motorsports in Indianapolis, IN. He's a site member who milled my handlebar mounts off and filled the the back of the tip triple--very nice work

hym
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Offline Alan F.

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Re: upper tripple tree fab ques.
« Reply #3 on: January 19, 2009, 04:12:29 PM »
They're hollow?  what a pain.  I'm not 100% sure but I think I've got an upper from a 78K that's solid.
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Offline Alan F.

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Re: upper tripple tree fab ques.
« Reply #4 on: January 19, 2009, 04:21:39 PM »
yup, hollow.  the early type was less hollow, but still lots of space to fill up.  Maybe one could fill it up with alumaweld, or HTS-2000 or some other product like that?
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Offline LoopsAndLogic

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Re: upper tripple tree fab ques.
« Reply #5 on: January 19, 2009, 05:24:50 PM »
Here's mine. Off of a 400f with the hollow problem.

But if you can find pictures of this members bike, he cut his top tree bracket down and
he's reported No problems or structural weaknesses.

Cheers

LL

His top bracket work:
http://forums.sohc4.net/index.php?topic=24518.0
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Offline mateo tomas

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Re: upper tripple tree fab ques.
« Reply #6 on: January 19, 2009, 08:10:17 PM »
or just flip it  ;)



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Offline Alan F.

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Re: upper tripple tree fab ques.
« Reply #7 on: January 19, 2009, 08:17:26 PM »
That's the early style Mateo flipped, cool idea Matt! I didn't figure it'd fit, but there it is...any mods?
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Offline mateo tomas

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Re: upper tripple tree fab ques.
« Reply #8 on: January 19, 2009, 08:21:07 PM »
interesting... I just pulled this from the "INSPIRATION THREAD"... no credit here
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Offline mateo tomas

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Re: upper tripple tree fab ques.
« Reply #9 on: January 19, 2009, 08:28:12 PM »
After seeing this I have been conemplating doing myself.  If you plan to lower the front forks I would imagine the reverse angle of the top clamp to help "hide" the extra fork tube?!?!
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Offline cafe2be

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Re: upper tripple tree fab ques.
« Reply #10 on: January 20, 2009, 05:02:36 AM »
Alan, you brought up an interesting idea with that alum weld product. I think I may mess with it today. Might just have it welded and sand smooth.
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Offline Gamma

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Re: upper tripple tree fab ques.
« Reply #11 on: January 20, 2009, 07:45:06 AM »
I didn't think there would be enough strength left if I took the bar mounts off completely, so I removed what I considered to be safe, and fitted some solid dural rivets then spent a v. long time hand sanding and then polishing. Just need some fully adjustable Tomassellis
http://i192.photobucket.com/albums/z293/galaxy8155/tripletree.jpg[/img]]
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Offline Gamma

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Re: upper tripple tree fab ques.
« Reply #12 on: January 20, 2009, 07:47:05 AM »
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Offline cafe2be

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Re: upper tripple tree fab ques.
« Reply #13 on: January 20, 2009, 10:48:51 AM »
that looks gamma.

I really like the way Proteal55 came out on his 450. Smooth.
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