30 March, 2016
28 March, 2016
27 March, 2016
Picturesque Hoorn
We spent Easter day in Hoorn (north of Amsterdam) taking a walking tour of the cobblestone streets and traditional Dutch row houses. Since it was Easter and a Sunday, everything was closed in the morning, but thankfully a few shops opened up after lunch. It was absolutely the most picturesque town you've ever seen! Part of our morning outing included coffee and cake hosted by a local family in their home. Our family was a divorced mom with a high school aged daughter who were so lovely and very gracious to answer all our questions about Dutch life. It was the highlight of our day!
Sent from my Verizon Wireless 4G LTE smartphone
26 March, 2016
25 March, 2016
Arrival in Amsterdam
Made it into Amsterdam this morning at 10:30 am local time (8 hrs ahead of the West coast). After a short drive to the boat, we had a light lunch aboard before hitting the streets on foot to check out the sights and sounds. After wandering around for an hour we finally made our way to Central Station, which in reality is only about 15 mins from the boat when you know the way. By then it was raining pretty good so we headed back for a much needed nap since we were only running on about 3 hrs of sleep. Now we're setting up for our Welcome Aboard talk, followed by dinner and a wooden shoemaking demonstration. Tomorrow morning is a canal cruise, so we're excited about that!
Sent from my Verizon Wireless 4G LTE smartphone
06 March, 2016
DKW Exhaust V2.0
Mocked up another exhaust for the DKW. A tad bigger and longer, using calcs for 4,000-6,000rpm.
28 February, 2016
DKW Progress
The engine is in07 February, 2016
DKW Engine Progress
I have made some progress on the DKW engine build. It's been a fun process, but I have run into a few "issues" here and there. But nothing I couldn't overcome.
Step 1 was reassembly of the clutch. Top photo shows the assembly back together. Middle photo shows it being assembled. Getting all the "teeth" on the discs and basket lined up, while keeping the springs in place was sort of comical. And realize this entire assembly is about 3" in diameter, so lots of fiddly little parts. The third photo shows the entire assembly spread out. Like other moto clutches, this uses a series of discs and steel plates, that all clamp together. This way you can fit more clamping area inside a small diameter.
Then I got some of the internals installed into one half of the engine case. I had to buy a few NOS parts, including a new 1st gear, new layshaft, and of course all new bearings and seals. Doing the bearings was actually kind of fun. Stick the cases in the oven for a few minutes so they expand a little, and slip the bearings in with a little bit of pressing. Then as the cases cool, the bearings are nice and snug.
I took a lot of photos during disassembly, which was good. The factory engine manual is very helpful, but in a weird 1970s translated german to english sort of way. So a few sentences are confusing, and the terms they use for various shafts and shims made me scratch my head a few times. But everything went back together fairly easily.
The only real problem I ran into was there were apparently many different types of 1st gears, which was the only gear I need a replacement for. The original had a tooth knocked off. My 5-speed engine needed a 106-100 part#. The guy I bought the NOS parts from accidentally sent me a 106-200, which looks identical. But when I finally got around to fitting it, I realized it must have been a 1st gear from a 6-spd trans, as it was thinner. Luckily my source down in LA sent me a correct gear asap. But when I got it, it was labelled 106-000. It was the correct thickness, but the back side of the gear was lacking a small chamfer cut into. Without this chamfer, the backside of the gear lightly rubbed the aluminum case on the inside. Long story made even longer, my new little Mini-lathe came to the rescue. I chucked it up, and was able to cut a light chamfer into it, so it fit just fine.
At this point, I pulled out my NOS gasket kit. As the seller mentioned, the gasket we're laying very flat anymore. He didn't charge me much for a full kit, and it included the seals too, so I was expecting to have to recreate a few new gaskets. The big center case gasket was indeed shrunken a little bit, making it so that all the bolt holes were not lined up. So I scratched my head, and set about making a new gasket.
I used a spare wooden shelf board, and marked and drilled all the case bolt holes into it. This way I could stick the case bolts through it, based on their real position using the case as a guide. Then I carefully stretched the NOS gasket over the bolts, and marked around it. Then I trimmed the new gasket out with a razor, applied a tiny bit of permatex to one side of the case, set the new gasket on it, and let it sort of bond for 30 minutes. This helped it lay out flat, and kept all the holes in position. The last step was to turn that side of the case upside down, and fit onto the case half with all the gubbins in it. I was expecting this to be a pain in the arse, having to line up multiple shafts, multiple case holes etc., and fight a gasket lining up. Reality was it just slide down and fit easy. Sorry for the random order of the following four photos. Sometime blogger has a mind of its own.
Step 1 was reassembly of the clutch. Top photo shows the assembly back together. Middle photo shows it being assembled. Getting all the "teeth" on the discs and basket lined up, while keeping the springs in place was sort of comical. And realize this entire assembly is about 3" in diameter, so lots of fiddly little parts. The third photo shows the entire assembly spread out. Like other moto clutches, this uses a series of discs and steel plates, that all clamp together. This way you can fit more clamping area inside a small diameter.
Then I got some of the internals installed into one half of the engine case. I had to buy a few NOS parts, including a new 1st gear, new layshaft, and of course all new bearings and seals. Doing the bearings was actually kind of fun. Stick the cases in the oven for a few minutes so they expand a little, and slip the bearings in with a little bit of pressing. Then as the cases cool, the bearings are nice and snug.
I took a lot of photos during disassembly, which was good. The factory engine manual is very helpful, but in a weird 1970s translated german to english sort of way. So a few sentences are confusing, and the terms they use for various shafts and shims made me scratch my head a few times. But everything went back together fairly easily.
The only real problem I ran into was there were apparently many different types of 1st gears, which was the only gear I need a replacement for. The original had a tooth knocked off. My 5-speed engine needed a 106-100 part#. The guy I bought the NOS parts from accidentally sent me a 106-200, which looks identical. But when I finally got around to fitting it, I realized it must have been a 1st gear from a 6-spd trans, as it was thinner. Luckily my source down in LA sent me a correct gear asap. But when I got it, it was labelled 106-000. It was the correct thickness, but the back side of the gear was lacking a small chamfer cut into. Without this chamfer, the backside of the gear lightly rubbed the aluminum case on the inside. Long story made even longer, my new little Mini-lathe came to the rescue. I chucked it up, and was able to cut a light chamfer into it, so it fit just fine.
At this point, I pulled out my NOS gasket kit. As the seller mentioned, the gasket we're laying very flat anymore. He didn't charge me much for a full kit, and it included the seals too, so I was expecting to have to recreate a few new gaskets. The big center case gasket was indeed shrunken a little bit, making it so that all the bolt holes were not lined up. So I scratched my head, and set about making a new gasket.
I used a spare wooden shelf board, and marked and drilled all the case bolt holes into it. This way I could stick the case bolts through it, based on their real position using the case as a guide. Then I carefully stretched the NOS gasket over the bolts, and marked around it. Then I trimmed the new gasket out with a razor, applied a tiny bit of permatex to one side of the case, set the new gasket on it, and let it sort of bond for 30 minutes. This helped it lay out flat, and kept all the holes in position. The last step was to turn that side of the case upside down, and fit onto the case half with all the gubbins in it. I was expecting this to be a pain in the arse, having to line up multiple shafts, multiple case holes etc., and fight a gasket lining up. Reality was it just slide down and fit easy. Sorry for the random order of the following four photos. Sometime blogger has a mind of its own.
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