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I'm a picture snapping fool ;-) It seems to me I've seen that bike on the net somewhere.
The prices on the Chinese diesels has gone way up. There have been many conversions. There seems to be very small diesels like your model engines and then a jump in size to over 3 or 4 hp. The Lohmann is interesting. Four stroke of course weigh more and a diesel four stroke would weigh even more than that. I haven't seen a 50cc (moped legal) diesel engine. I'm trying to gather b
I'd like to see the setup for that camerawork. I bet it was done with film. Some of the newer HD video cameras are capable of very high frame rates. I've only played around and haven't done the math, but it might be possible to check the timing with regular video. Perhaps paint a mark on the flywheel? I know slow mo analysis has been done, but being able to do it as a shade tre
Nice work. I bet it sounds great on a hill. Is it pull start and does it have a compression release?
Yes it is a pull from a sailboat. I got it off of Craigslist for $100. It was in sad shape, wouldn't even turn over. I have this engines sister which is a French version of the original Hatz design.
Making video is another hobby for me. Trying to work in making video adds a bit of complexity to a project. This was the first time I took the brakes apart. If I'd had more experience with the brake change I think I could have knocked the time down on the video, at least made it into one under 5 minutes long. I did have in mind a target audience of complete newbe as in fact for this part
The engine is a BMW D7 which is a 7hp marine diesel. If you listen to the slow motion parts you can hear the exhaust sound as the valve opens. Notice the slow motion of the engine stopping. As it stops the engine inertia can't over come the compression and the engine kicks backwards shooting exhaust out the intake. I hope this appeals to a general interest in small engines here at Moped
I made these two videos during the summer. I forgot about them. They deal with me struggling to replace the rear brake pads on my 1978 Honda PA50-1. I think they are at the beginners level, yet the witty artiness might entertain the more experienced mechanic... Part 1 part 2
I went out and bought a cheapo Chinese compressor. I pulled the welch plug and squirted and blew out all the tiny passages. It worked and the machine is running fairly well again. Well it does about 20mph, which is good enough for a while. Thanks for the help guys.
I'm getting good at getting it in and out of the bike! BTW I snapped the flange off the clone carb I had put on, so I got to get the original working. MK1 means mark I or PA50 I. I been holding off on drilling out the plugs as I ain't got replacements on hand. I might have to take a chance on it and make do with some buckshot to replace them. I had this machine purring 2 weeks ago..
I cleaned the carb by taking off the float bowl and unscrewed the brass thing. I cleaned it out with a wire. I put it back together and it ran well for about 10 minutes, then the symptoms returned. I guess there is a bit of dirt in some passageway. I'm getting pretty good at getting that carb in and out. I swapped stainless Allen head screws in place of the Philips head screws and it mak
I have a 78 PA50 MkI. I had it running fairly well. It still starts easily with the choke and will keep running with the choke on. When you release the choke it just barely idles. When I twist the throttle it dies. I've opened the carb drain to drain the bowl and completely replaced the fuel in the tank and ran some of the new fuel out the drain to make sure. It still stalls out when yo
I'm doing some work on a Honda PA50 I. I got a 4 part video series about finished. Here is a coffee induced preview of some of my work.
If it is truly a through crack that you can see on both sides of the piece, then you might want to drill small holes at each end of the crack to keep it from spreading. If you are going to seal the crack with goo you can fill the small holes with it too.
I think the bottom drawing would give you the most reliable running engine. The first drawing would give you the most reliable stop.
Patience! There are different shapes and sizes to Philips head screw drivers. A good fit is real important, else the screws will strip. Also look closely at the tip of the screw driver. The part that grips the screw shouldn't be rounded, but sharp edged. People sometimes use them as punches. Now that it is striped of course you must try the impact tool. Squirt some penetrating oil on the s
I just got the cylinder off 'en my Puch. It had a bit of rust on one side. I'd like to just hone and put in new rings. My first inclination was to just hone, but I'm wondering if it might need to be bored. I think it might depend on the rings that are available. If the cylinder is eggy if I hone it will still be eggy. I would imagine, but don't know for sure that some rings
I made a tool to get the flywheel off. I show the cam on the flywheel and the removed stator. It runs about 5 minutes, including the scary ending for Halloween.
I am trying to loosen the flywheel nut on an e50. It is an old and stubborn nut! But then again, so am I ;-) I saw a picture of the Puch tool. It fits in the access slots of the flywheel to keep it from turning. Their tool fit in two of the slots, but I thought I could make a tool the fit in just one. I measured the opening and two 3/8 inch bolts 1-3/4 inch apart would do the trick. I drilled
Good info Steve. I think I will stop after I get the stator off. To do this I of course must remove the flywheel. The nut is on there very tight. I made a tool to lock into the three access holes on the flywheel, but didn't make it long enough to get enough leverage. BTW for the tool I tapped two 3/8 inch holes 1 3/4 inch apart and put bolts in there that stick out far enough to get a hol
No real meaty info here. More of a general outline on getting the motor off.The music is original. I stole the joke from some where. It is as old as the hills.
Sure would be sweet to learn how to plate the steel insides of the tank with something that was more resistive to the elements. You can use small flashlight bulbs in series to limit current. I know the brightness of the bulb was a good indicator when I used it to limit current in battery charging. I've never used the bulb method for plating. At least when the bulb was lit you knew you whe
There was a lot of crud in the tank too, a watery mess. I'm sure it sat for a good while. The brass looks good. I used a toothbrush on the float valve after I pried it out of it's seat. The rubber is still on it. That little piece ain't cheap. I read on this site about steel gas tank cleaning with electrolysis. It occurred to me that you might be able to clean aluminum parts
If you reverse the polarity and use a copper anode can you plate the inside of the tank with copper? What about zinc?
I took apart the 12mm Bing Carb on my very beat 78 Puch. It had a white putty like goo in it. When you sat the go in the sun it dried up and got chalky. I'm not real experienced with rebuilding carbs, but in my experience I've never seen this kind of white putty before. After cleaning it fairly well I noticed that the bowl and body are a bit pitted. Has anyone seen this? I might tr
I got a Honda Hobbit (PA50-I)for a good price on Craigs list. It is kinda beat. I sent off for a new set of points and they arrived today. I put them in and I'll be darned I got it running! It is not running well yet, but I am encouraged. It makes a lot of smoke and dies if you undue the choke. I'll try to set the points better first, then mess with the carburetor a bit. I also hav
Do people on this site have anything against motorized bikes? Would there be awkward moments if someone showed up at a ride with a 35cc Honda powered mountain bike?
I have never worked from a script and don't have a teleprompter.I've been trying to edit out my "um" "ughs" and "ahs". I was going to say "wikipedia", but realized that was a specific site and not this one. I know what a wiki is and I know what a site is, I've been on the net for over 20 years, but trying to describe them in correct Englis
Not a whole lot of content, but I am quite pleased with my special effects.