fixit3546
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Everything posted by fixit3546
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Question for metalurgists and welders, Professional or amateur.
fixit3546 replied to fixit3546's topic in General Tech Talk
Fellas, I appreiate your input. Think i have what i needed to know now. We striped the bike down to the motor and frame this evening and got some ideas as to which way we want to go with it, I think we may stretch it a foot or so and build a hard tail section for it. not sure about the stretch. the next phase in the project will be to rewire it and start the motor. I've never heard it run and i think before we get a lot tied up in it the motor has to be checked out. it is a 1976 CB 360 T if you are wondering. -
Getting ready, in the coming months, to to turn an old CB360 into a bobber. My question is why do i have to use a tig welder to modify the frame, or do I. I have a mig welder and an AC stick welder that I think will work ok, I haven't gas welded in several years; but I can do that if need be, But i'm thinking the mig welder will suffice. I'm asking this question because I want to completly replace the tail section, and I want to do it myself. I'll take any other advice you may have as well, I've never done this sort of thing before. Not on this scale anyway. The closest I've come is when i was younger i blew up the motor in my MT 125 and i wanted to ride. so i had an SL 125 motor in another bike, I swaped them. The bike was a lot better in these hills with the sl engine because it was a 4 cycle, more lugging power. not as fast as the MT though. The other thing i did was to build a three wheeler of sorts by matting a gocart to an old MX 250. I cut the rear off the gocart and removed the tripple trees from the MX250. welded the bike to the rear of the gocart. that was one wild ride. Don would like this, I named the buggy the "FREEBIRD".
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My 83 clutch slipped some under acceleration as well. A while back i found on this site a modification that eleminated this problem with my clutch. may not work for yours. Placing spark plug seal washers under the springs provided just enough tension to stop my clutch from slipping, and as you stated, my plated look new. This may not work for yours because you already swaped out the springs so they should be at their correct length and tension; But it might work. All i did was buy six lawn mower plugs and took the washers off. I placed these washers under the springs and put it all back together. Works like a new clutch now.
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Sounds good to me Randy. It may be after the first of the year before i get to get into the running bike. just too much going on right now. but if things come together sooner, I plan to post picts of the tear down. And I'm not too bad stuck on myself, In other words this aint my article. Use it, add to it as you see fit. Everyone here deservs this info.
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The photos are pretty self explanitory, the 5th. gear wheel has the dogs on the side that mate into the 2nd. gear wheel to conect power to the driven shaft. The home made press dosen't look like much; but was very effective. One of the photos shows the work done on the dogs. don't know if it will retain much detail after resizing. After reasemblying it all back in the case, i noticed that the dogs engage the 2nd gear wheel about 1/8"-3/16" Didn't look at it before hand.
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Randy, I think we are saying the same thing. THANKS!
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Randy, which washer are we talking about here, is it no. 6 in image #032 or another one ? These images are from bike bandit for the 83 XVZ1200. http://www.bikebandit.com
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Today I decided to get out there and get busy. I pulled the trans gears and shafts from the donor motor. Assembled it alltogether in the lower case and started turning the shaft and working it through the gears. After seeing how things worked i pulled the drive axle out, this is the shaft with the problem. I pulled all the gears off with the exception of the second gear wheel. it is held on with clips. I had no reason to take it off at this time. The problem, i found, is with the dogs on the 5th. gear wheel which has the dogs built onto the side of it to engage the second gear. Just as randy described, it had a fair amount of wear on it. also the retainer clips that hold the pinion gear on had a grove cut in them. (is this the thrust washer i keep hearing about ?) The width of the posts was about .485ths. I ground them down to a flat .463ths. and cupped them to about .457ths. I quit for the night. Tomorrow I will clean everything up and bag the transmission untill I have all the parts i need to do the job and a little time. BTW, I built a very simple press to remove the pinion gear. I used two 16"x3/8" allthread rod and nuts. I used a peice of I-beam that use to be the tongue of a trailer and cut two holes in it about 5" apart for the bolts to pass through. that made up the base. for the working end, I cut the center out of an old "doughnut spare" wheel that was on a dodge car. I cut the bowl out of the middle of it, cut one small hole between two lug bolt holes for my allthread to pass through, (i used a lug hole on the other side.) then I had to open the middle up a just a bit. It worked by compressing the shaft between the the two pieces as the nuts were screwed down on the allthread. the end of the shaft rested on the plate and the "wheel" end compressed the spring sending the shaft up through the hole untill the retainers could be removed. I'll try to get a photo next time, I,m not much on wrighting technical articles.
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Yep, they'll do that. Hope you are OK. The bike is replaceable. glad to hear we don't have to replace you.
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I think you nailed it Sarge, too bad everyone dosen't see that.
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No idea, but i will push it back up.
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Amen. I am sure they were a blessing to their Country.
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Couple of pictures of the donor bike and donor engine. Randy, thanks for the right up. If i am looking at the gear sets right, I don't see any wear on the 2nd. gear dogs and they may alteady have some angle cut into them, I'll have to borrow a set of calipers from work and check it out. I'm wondering if the problem has already been repaired. I do not see punch marks on the underside of the case at the shifter shaft. the odometer of the donor bike had 38000 miles on it. Any specific picts anyone ?? Don, I have something for you if you will e-mail me your addresse. I still have my bike to take apart, I'll try to get more picts on that project. and of the case separation.
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Just wanted to bring it back up, i'll be posting some picts of the engine removal and tear down (from the donor bike) as soon as i have a chance to do it. By the way, I have a few parts that will be avaliable soon, the bike has been pretty much stripped but a few parts remain.
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Plastex makes a clear plastic repair, i've never used it and don't know if it will work but it may be worth a try.
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Today I had to put one of the pins back in my shift drum again. This is the third time in as many weeks. This time the metal tab that bends over the pin broke off, So i welded the pin to the plate, ruined it for future repairs; but it works for now. (every shop needs a small mig welder). I think that when i miss third and land in second gear it is some how causing pressure enough on the shift drum to push the pin out, I don't understand this happening; but something is doing it and it is always after landing in second. it could be that it has something to do with the shift lever being out of adjustment ( heel to toe shifter) causing me to land in second. All this aside, it's time to do a second gear job and a shift drum repair. I have aquired a donor bike/motor so i will be pulling the tranny from it as soon as i finish anpther job i'm doing so it may be a week or so. I plan to make repairs along the line of the repair that randy has made to his. So Randy I'm looking for all the info you have. I am posting a picture of the tranny for reference, If i am understanding your previous posts. The location i will be working on is shaft #1 and gear set #5 which is the second gear pinion. Is #10 the washer you fliped over ? and tell me again about how you cut the dogs on the side of the gear. I think you said that you cleaned up the wear by flatening out the wear on the end of the post which caused a little slack in the gear set but wasen't enough to really notice. then you cut out .020 from the dog, my question here is how did you shape the dog. Is it a slope with the .020at the base, or is it more of a hook or notch shape?
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This is my local used parts supplier, recycler. He has a couple of 1st gens in stock that are pretty much parted out; but he can get parts from other parts supliers and drop ship to you. David Naman. 2D Cycle parts. www.2dcycleparts.com
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Hate it when that happens !! Almost never happens when no one is around. I pulled into the Church parking lot last year, a few minutes late, one foot on pavement and one on grass. the grass foot sliped. Over she went, and in the edge of the lot like i was, it was a little down hill. After struggling in the grass, must have been an awfull sight, I got it back up. Everyone was already inside, and thanks to God and stained glass, no one saw it. Or if they did, they are just a forgiving people because i never heard a word about it. That was not the only time though...............................................
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Lots of good stuff on his site.
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Dont really know, I do but i dont know how ta splainit. Took mine off and did the Jason mod, saves me 1/2 Lb. of weight overall and added about 47 Mph to my top speed...............WOW . BTW, read the disclaimer at the bottom; but I really did do the jason mod and got rid of the chamber. And I'm satisfied with the performance. I average between 38 - 43 Mpg depending on how I ride.
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To Swivel or Not to Swivel, That is the Question
fixit3546 replied to Mean Dog's topic in Trailer Talk
Looks good Mark. Maybe one day I will set one up. Think id like to build mine and the hitch too but i can"t sem to find plans for one... -
Cracked plastic can be effectivly repaired with Plastex. http://plastex.home.att.net/