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C70 passport chopper project
Posted: Mon Oct 24, 2011 7:09 pm
by Majourlittle
I though I would let you all in on my other project. I picked up a cherry 81 c70 earlier this year and along with it came a no-title-pile. I did osme research on it and managed to get a title for the crap one. It has been sitting in my back yard for a while now, waiting to get rebuilt.
While searching the web, I came across a stunning piece of art. It inspired me to make a giant rip-off of it and call it my own. Check it out here.
http://motogarage-life.com/gallery6.html
So here is my log of the build.
I started with a fully assembled bike, minus the plastic fairing. It was in terrible shape. I started to strip it down and took it to work.
Parts set on my wall of shame
No turning back now.
Swing arm cleaned of all of the silly tabs and rear foot pegs.
Todays kill
Plan is to rake and stretch out. Add a crossbar and put in a lifan 140cc. I am trying to keep this as cheap as possible, so I will be repurposing as much as I can.
Re: C70 passport chopper project
Posted: Mon Oct 24, 2011 9:46 pm
by Mystic
Kewl, I will be following along for sure

I really liked that chopped passport you posted a while back it was super clean. I have been working on getting a title for mine, it is in really good condition but if I cannot sell it I will be considering modification as well

good luck and cant wait to see what all you have planned for her

Re: C70 passport chopper project
Posted: Mon Oct 24, 2011 9:49 pm
by zuphilius
Can't go wrong with a Cub. I wish I never let mine go. I like the horizontal shock! Keep us posted with lots of pics.
Re: C70 passport chopper project
Posted: Tue Oct 25, 2011 5:45 pm
by lilredspree
The intake setup on the one you linked is killer!
Re: C70 passport chopper project
Posted: Tue Oct 25, 2011 9:36 pm
by Majourlittle
Unfortunately, I wont be doing that intake setup.
I lack ze-skilz
Re: C70 passport chopper project
Posted: Tue Oct 25, 2011 11:20 pm
by lilredspree
.... if there's a will there's a way....
Re: C70 passport chopper project
Posted: Thu Oct 27, 2011 11:04 pm
by Majourlittle
Well I got stuck at work again tonight, So I decided to take a few more stabs at this bike.
First thing was to clean up the inside of the fender and remove the extra material from the extended fender. I also cut the internal fender cover back some. Ill have to patch it up so that it is sealed at some point.
I cleaned up the neck attachments and started to size things up. Thankfully we have some awesome pipe stands at work.
Started mocking up the neck and measuring for the gusset that I will need to connect the neck to the structure.
Getting there
Now this is where it gets good. I took Motogarage Life's drawing and did some measurments of the angles and distances. I used the tire as a scale reference and came out with the neck to be a 25* rake at 22" long. I used the piece of scrap to check where the neck was level with the top of the gas tank, and it came out to be exactly 22". Looks like i'm spot on!
So it's time to weld it in. I built this gusset out of a piece of scrap and cut it to fit the pipe with an end mill.
Then I seamed welded the neck in. Laced it extra thick so that I could grind it out and make it blend well.
Now the neck is about three inches longer than I want it to be, but I wanted to make sure that I didn't cut too much off in the first place. That way I could change the rake if I didn't like it.
Mock up for looks.
And mock up for stance.

1
I will be adding a cross bar across the top like the bike that I am ripping off, but it will be a solid weld in from the top of the fuel tank area to the neck. The current dia of the neck is 2" and the cross bar will be 0.75". I don't have a pic of it being tried out, but it looks promising.
Re: C70 passport chopper project
Posted: Fri Oct 28, 2011 1:09 pm
by zuphilius
Looking good!

Re: C70 passport chopper project
Posted: Fri Oct 28, 2011 1:18 pm
by bradthreee
Great work!

Re: C70 passport chopper project
Posted: Fri Oct 28, 2011 5:41 pm
by Majourlittle
So there was a mixup at work and basically I sent most of the guys home. In the meantime... I did a little more work.
Yea, its almost there. Gonna take it home and do the piddly crap and get it ready for sandblasting.
Re: C70 passport chopper project
Posted: Fri Oct 28, 2011 6:00 pm
by lilredspree
nice progress!
Re: C70 passport chopper project
Posted: Mon Oct 31, 2011 12:33 am
by Majourlittle
Just ordered a 90/90 tire for the back and a 2.5 for the front. I also picked up a set of rear turnsignal/brakelight combos for the back and some small turnsignals for the front. Ill spend this week getting the body sorted and filled before I tank it this friday. Body work and wiring to come.
I just need to save up for the 140cc motor to put in it.
Oh and for comparison...
Should be done by spring!
Re: C70 passport chopper project
Posted: Sat Nov 19, 2011 1:55 pm
by Majourlittle
Re: C70 passport chopper project
Posted: Sat Nov 19, 2011 5:08 pm
by tru72
Looking awesome!!
keep up the great work!
Re: C70 passport chopper project
Posted: Sat Nov 19, 2011 6:27 pm
by Majourlittle