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Old 04-15-2013, 06:58 AM   #91
JeffS77
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Originally Posted by Scootern29 View Post

I really hate the front fender and it will go and be replaced with the correct one.

More to come.
is the one on there backwards
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Old 04-15-2013, 09:08 AM   #92
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Originally Posted by JeffS77 View Post
is the one on there backwards
Nope, it is even worse the other way. I bought it as advertised for the 76 YZ. It is for the earlier mx or whatever. Totally wrong shape and length.
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Old 04-15-2013, 09:12 AM   #93
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Wow, that is nice.

I'd like to find one like what's behind the 400 and fix it up. Is it a 250? In the 80's?
It's a 1980 YZ 125. The last year of the air cooled bikes. I just picked it up and of course the motor is locked up. I am hoping it just has a stuck piston from water but it probably isn't.
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Old 04-25-2013, 06:11 PM   #94
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It has been a few since I updated as nothing has really happened till yesterday. I finally received my plastic goodies from DC. The only thing I messed up on was I forgot to tell them to send the parts undrilled. It wasn't a big deal. I had to wollow out the mounting holes a little bit to get them to fit.
Heres the stuff.



Pulled out the decals and my decal installation kit. Squeegee, razor blade, heat gun, and some secret concotion to apply the decal. Not really secret, I had some stuff left over from a tinting project.



You spray the surface down with a very good coat of fluid and squeegee the decal onto the number plate. Since it is not a flat surface you take the heat gun to places that are bubbling and it shrinks it and wipes out clean and smooth.


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Old 04-25-2013, 06:16 PM   #95
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The side panels after drying and trimming for the mounting holes. They came out cool. It took a little bit of tweaking on the frame mounts to get them to line up properly.





Next is the front fender. More to come soon.
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Old 04-25-2013, 07:29 PM   #96
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I used the fender I hated, to drill the new one as it lined up perfectly with the DC fender.



I mounted up the fender and of course it hits on the pipe when you cycle the turning radius. I did some ball park measurement and had to machine up a couple of spacers that are 0.140 thick.





Installed.

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Old 04-25-2013, 07:37 PM   #97
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All mounted and it misses the spring mount on the pipe. Life is good.



It looks good and the bike is starting to have some character.

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Old 04-28-2013, 05:26 PM   #98
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Today I spent my morning pressure washing the front of my house to get ready for paint next weekend. I aslo worked on a set of shocks for a customer, then I figured might as well screw around with the bike a little. Didn't really do much. Mounted the seat and set up an old DRA number plate with my buddies number on it and took the bike outside to look at it in the light. It is looking OK.






This week should be working on new tires. I am also looking for a silencer for this bike. It needs to be an 1 1/4" inlet. If someone has something in aluminum or steel I could use it and cut it too whatever I need.

More to come.
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Old 04-29-2013, 09:26 PM   #99
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Looks like it will soon be time for a test ride! Nice work!!
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craydds screwed with this post 04-30-2013 at 07:02 AM Reason: spell check
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Old 04-29-2013, 10:07 PM   #100
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Great looking YZ!! I hated those "Hand Grenade" forks when I worked at YIC !!
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Old 04-30-2013, 07:08 AM   #101
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I hated those "Hand Grenade" forks when I worked at YIC !!
I hope my forks (and Scott's, too) don't GRENADE on us! I wonder why they only made them on the '76 model??? Seems like a good concept. Did they have EXPLOSION issues?
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Old 04-30-2013, 10:58 AM   #102
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I hope my forks (and Scott's, too) don't GRENADE on us! I wonder why they only made them on the '76 model??? Seems like a good concept. Did they have EXPLOSION issues?
No, no explosion issues. They were just very difficult to dial in. You had to have that "Low Loss" gauge to check the top and bottom pressures. The bottom was not so much an issue. The top on the other hand would vary greatly due to the small volume of air in the top chamber. If you used a conventional pressure gauge, the pressure could be off by 5 pounds or more from one side to the other. Of course with today's modern suspension, that has been used with some forks having dampers in only one side....???
One year was enough of that none sense!
Dennis Kanegae and I referred to them as "Hand Grnades" cause that's what they looked like.
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Old 04-30-2013, 04:03 PM   #103
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they look sorta like a tach and speedo.

ADK screwed with this post 04-30-2013 at 05:49 PM Reason: speeling
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Old 04-30-2013, 07:14 PM   #104
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FMF has a universal Turbine Core 2 that comes in 1 1/4 ... I think they even send a length of mid pipe with it for about $100.


I usually just pick up new take offs at the long beach motorcycle swapmeet for like $5 ... But that is a little bit if a ways from you.
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Old 04-30-2013, 07:39 PM   #105
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The top on the other hand would vary greatly due to the small volume of air in the top chamber. If you used a conventional pressure gauge, the pressure could be off by 5 pounds or more from one side to the other.
We want to make a single schrader valve tapped into a splitter, then 2 hoses that goes to both upper chambers, joining the chambers by a common hose so that pressure is equal between them. Something similar to - http://www.motorcycleforksairequalizer.com/ .
We can do the same on the lower fork tubes, one schrader valve goes into a splitter to both fork tubes via a common hose and both fork tubes have the same pressure. Scott is going to design and machine the parts (yes, I am volunteering you, Scott). I will supply the money for the schrader valves, various parts, hoses, etc. I found a good example of this set-up, simple and easy. I will search for it and post a link when and if I find it again.
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