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Old 12-18-2013, 09:53 AM   #1
przjohn OP
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Joined: Aug 2008
Location: Ellington, CT
Oddometer: 81
1972 Kawasaki H1B Restoration

I wasn't going to do a resto this Winter but decided I couldn't pass this one up. The bike comes thru New England Dirtbikes site via, "oldschool" AKA Tom. Thank You Tom and better yet my Wife thanks you too.

I picked it up last weekend and tore it down this past weekend. I am no triples guru but from what I understand; This 500 Kaw Triple is the only one to have a points ignition. It is weird because in 69 when the first 500 H1 came out the CDI was a big deal. In 72 they wanted to put a front disc on but also wanted to keep costs down so they went to points. Later in 72 they introduced the H1C with a front drum and CDI, go figure. After that they were all front disc CDI. According to the Kawasaki Triples site only about a 1,000 H1C units were made. This will be my 4th triple restoration and second H1

Story behind this bike is that Tom's friend is a tree cutter. He cut down a tree for a guy who had no money but had this bike in his basement, he said he was the second owner. Tom's buddy asked him to see if he could sell it for him as he was not a bike guy. Tom got a hold of me and even though I am suppose to be fixing up the house this Winter to get it ready for sale in the Spring I figured there should be time to fit this bike in. My goal is to have it ready for the 2 Stroke Meet at Deals Gap this coming May. Barring any serious setbacks that should be doable.

Some barn fresh pics,

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przjohn screwed with this post 12-18-2013 at 10:17 AM
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Old 12-18-2013, 10:06 AM   #2
przjohn OP
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Near as I can figure this bike has sat since 78-79. Question is why did it sit? Everything so far looks good with the bike. We will see if it has any non running issues that need to be addressed later, but as of now, it looks good.

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Here is paint and powdercoat. Powdercoat was dropped off Monday. Paint is waiting for decals and I need to line the tank. Hopefully that will be ready to go next weekend.

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First problem child. This is the static steering stabilizer rod going thru the top triple clamp spanner nut. It is frozen solid from corrosion.


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This is where it connects to a star drag washer underneath the lower triple clamp. I had to disconnect the lower part and pull it thru the clamp, loosing the adjustment knob in the process. I am up in the air about retaining this as I have a hydraulic stabilizer and may go to a newer version that doesn't use the old style static damper, we'll see and I can address this later.


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Once you loose the frame and engine the rest of the bike fits neatly into Hefty Bags and on a couple of shelves.

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New parts are already coming in. It certainly feels like Christmas at my house.


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Still have a few parts left from past triple restos that should come in handy and save a few bucks too, though I figure on being pretty upside down on this one.


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Hope to have paint ready to go after next weekend as well as the crank ready to be sent out. Those are long lead items that need to be put out quickly.

And a brief side note. Tom, I walked off with your screwdriver last weekend. I was going to put it in all the photos of this resto but figured I'll just mail it back to you.
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Old 12-18-2013, 11:26 AM   #3
kbasa
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Moved to 2 smokers
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Old 12-18-2013, 12:55 PM   #4
bykpimp
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Purdy damn neat!!! I've that same King poster only smaller.
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Old 12-18-2013, 06:04 PM   #5
baloneyskin daddy
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Loved the 72s,I have a nice 72 750 and enough to build another minus a couple parts. You should look for a cdi unit for it although for the entire setup would cost a fortune and probably not worth it .
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Old 12-18-2013, 11:51 PM   #6
huub
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wow , i'm going to follow this one ,
this is going to be a seriously nice bike.
pity they are pretty impossible to find over here..
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Old 12-21-2013, 05:22 PM   #7
Foot dragger
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Location: chico,just below rag dump(nor-cal)
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That will be a sweet bike to wheelie up and down the block!

Ive got a hulk of a 72 H1 sitting here,not sure what all is good on it,its rough.
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Old 12-23-2013, 10:07 AM   #8
przjohn OP
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This weekend was spent getting the wheels built and a few other odd jobs.

Here is the rear hub before.

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And after, polished up with a new rim, spokes, tire, tube, and wheel bearings.

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I had this NOS front wheel cap left over from a group parts buy a few years ago and figured I'd use it on this bike. New rotor bolts and washers also help with the details.


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Both wheels ready to go. Waiting on some parts like new fork tubes and shocks to complete the rolling chassis.

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The frame and 12 other parts are back from powdercoat and done in Mirror Black. All Balls tapered steering head bearing races have been installed in the frame to replace the "Fall on the floor, run and hide" ball bearing type.


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The tank has been cleaned, though it was in pretty damn good shape for it's age. It has also been lined with the Caswell kit. I know there are 2 trains of thought on lining but for me it's good insurance on these old tanks and new paint. I am still waiting for the graphics to come in and get the tins to the painter.

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Hopefully this week the parts needed to complete the rolling chassis will arrive though with the holiday that could be a crap shoot. Besides the bike starting to look like a bike the rolling chassis just makes everything easier to work on for me and visualize what is needed better.

Merry Christmas
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Old 12-23-2013, 11:38 AM   #9
Cogswell
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Great score, will look forward to following along on your build.




Mike
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Old 01-04-2014, 05:09 AM   #10
Frank06
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You are going to change crank seals, etc aren't you? Might as well send the tranny to R&D as long as it's apart...

Sent from my Nexus 7 using Tapatalk 2
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Old 01-04-2014, 07:25 AM   #11
przjohn OP
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Quote:
Originally Posted by Frank06 View Post
You are going to change crank seals, etc aren't you? Might as well send the tranny to R&D as long as it's apart...

Sent from my Nexus 7 using Tapatalk 2
Yes the crank is going to be sent out. I will look at the tranny, but that should be within my capabilities.
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Old 01-04-2014, 10:29 AM   #12
FJ_Kevin
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Quote:
Originally Posted by przjohn View Post
Yes the crank is going to be sent out. I will look at the tranny, but that should be within my capabilities.

I have been enjoying your posts. Great workmanship... really!

I have a few general questions on these multi-cylinder 2-stroke cranks.

- What is the deal with the main seals between the flywheels. I am imagining that you have to press the crank apart to change them? Are they keyed some how to keep the crank pins in the correct relationship to each other?

- About a year ago I looked at a Yamaha yds3 (twin cylinder). I seem to recall the guy telling me the center crank seal was replaceable without splitting the crank... don't recall the details of this. Maybe you know?

- If you don't mind me asking, what is the range in cost one might expect to rebuild a crank for your bike? And are you doing just the seals or the whole thing (seals, rods, bearings). I can rebuild a single cylinder 2-stoke crank but am leery about trying a twin or triple . How did you find your crank rebuilder?

Thanks and keep up the great work!
Kevin
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Old 01-04-2014, 10:55 AM   #13
przjohn OP
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The crank gets minimum new seals and bearings. From there it is inspected to see if it needs rods. Last one I had rebuilt was an H2 750 crank that also needed new rods and that ran me $1,000.00 for everything. The rod kit alone is about $350 I think. I will probably send this one out to HVC Cycle who did my last one, I was happy with their work.
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Old 01-04-2014, 07:47 PM   #14
anonny
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Quote:
Originally Posted by przjohn View Post
Yes the crank is going to be sent out. I will look at the tranny, but that should be within my capabilities.
Yes the trannys are simple, there a lot of good reading on how to shim it properly, the biggest issue is getting the kickstart spring on properly and even that's not rocket surgery

Have you given any thought to what kind of crank seal you are going to use? Porsche Dave in California has a good reputation for triple crank rebuilding.
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Old 01-04-2014, 09:52 PM   #15
petermac
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Nice to see this bike saved.

I bought this exact model new in Australia,rode it on the road and raced it.

Heaps of fun,fondly remembered,scary handling was excting
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