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  #2881  
Old 01-01-2012, 09:03 PM
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CTripps CTripps is offline
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Default Re: what did you do to your motor bike today?

Filled the tires and the tank and took it out for a ride today. Didn't go far, only over to the Cambie Street Bridge and back but it was nice to get out for a bit.

Used my new phone's camera to take a couple of pics, one's in this thread.
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File Type: jpg Cambie Bridge 02 01-01-12.jpg (70.2 KB, 63 views)
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  #2882  
Old 01-01-2012, 09:37 PM
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rustycase rustycase is offline
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Default Re: what did you do to your motor bike today?

Short hop to the hardware store yesterday to get a couple more SS nuts for the mab.
Motor is still running OK, real fat, but ok, and reliable...
Some grungy noise/feeling from the back wheel/chain. Probably safest if I take it apart for a good inspection before I run it again. I'd really prefer not to go sliding across the pavement!
Best for the New Year to everyone!
rc
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  #2883  
Old 01-02-2012, 12:36 AM
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Rocky_Motor Rocky_Motor is offline
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Default Re: what did you do to your motor bike today?

Still working on getting my exhaust to bend correctly. It would be fine if I could mount the seat part of the engine flat but I can't because the single speed derailer clamp thing is in the way. Not the clamp but the part that holds the shifter cable part.

Slowly but surely.
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  #2884  
Old 01-02-2012, 02:07 AM
MEASURE TWICE MEASURE TWICE is offline
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Default Re: what did you do to your motor bike today?

For a jack-shaft keyway where the collars I use to keep the shaft bearings (think called pillow bearings) in place, I found the collars do not use a key for the keyway, they just have the threads of the set-screw go into the keyway and does not do it any good as far as keeping the jack-shaft key-way in good shape.

Maybe someone says to just put the set-screw on the round surface of the jack-shaft, but I wanted to make sure it holds even though it is only for sideways stress on the jack-shaft. Later when it is all working good, I would use blue thread lock and prep before with activator to help it really hold. Stainless steel is not used here, but it can be used to prep the more active metals like these alloy parts too.

Anyway I really did not want to ruin the keyway slot along the length for future removal of pulleys and gears on this new jack-shaft. I made the end of the threads with a long enough set screw for each collar ground down small. This allowed the rounded, sort of large center punch tip to the set screws that they fit in the keyway and do not mash up it up.

I misplaced a jack-shaft that I was going to use, but for $32 got another kit, but was well aware I did not want to have to sand down and keep cleaning the keyway as adjustments become necessary.

For the job, see the vice holds a wing-nut that I screw the set screw into. The end of the set screw I want to grind with a Dremel cutoff wheel, I leave sticking out. The other end of it with the hex allen-wrench drive is facing down protected.

Note that I put a section of keyway material, but could be any metal underneath where the hex allen-wrench drive is to stop it from spinning and coming through when the grinder wheel is trying to spin it.

Be careful that you only use the grinder wheel in the direction that will try to make the set screw go down into to wing-nut clamped in the vise, otherwise it will not grind but shoot out the top fling far away for you to look for!!!

Check the grinder wheel direction and the thread direction of the set screw to be modified in the wing-nut clamped in the vise!!!

Note the picture with the wing nut is before I tightened down the vise jaws on the wing-nut wings.

There is also a picture of a crummy drill an tap of a collar I bought, see it is not drilled perfect and would really mash the keyway whether I did the mod on the set-screw or not. I know now if not a prepackage item to look first before buying when in the store. Lesson be learned.

Measure Twice
Attached Images
File Type: jpg IMG06390-20120101-1527.JPG (608.7 KB, 30 views)
File Type: jpg IMG06393-20120101-1534.JPG (495.8 KB, 31 views)
File Type: jpg IMG06399-20120101-1555.jpg (128.3 KB, 30 views)
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  #2885  
Old 01-02-2012, 04:56 AM
5-7HEAVEN 5-7HEAVEN is offline
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Default Re: what did you do to your motor bike today?

I've been working on my tight engine drive chain. There are no 8mm half-links, so adjustments have to be made with an extra link. For some reason, I can't adjust the drive assembly to take up the slack. The skateboard chain tensioner isn't taking up all the slack. so I installed an ADDITIONAL tensioner on the opposite side of the chain. The skateboard wheel is adjustable and pushes the chain inward. The second tensioner is stationary and pushes the other side of the chain outward.

I also made a simple camera mount for my MB. I don't like how most cameras' videos are shot from the handlebar. There is too much swiveling back and forth. I bolted a simple 2" angle bracket onto the side of the bike frame. There will be less "yaw" or "fishtailing" in the videos I shoot. This way, the camera views where the frame's head, not the handlebar is pointing.

The rear tire is flat. Unsure how it happened. Must've picked up a nail. I'll fix it tomorrow.
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  #2886  
Old 01-02-2012, 10:22 AM
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rustycase rustycase is offline
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Default Re: what did you do to your motor bike today?

Yah!

Post more pics, 57!!!

(Ur motorized bicycle is SO technical I have trouble envisioning all the things u r doing with it, without pics... I'll watch for your vids!)

Best for New Year
rc
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  #2887  
Old 01-02-2012, 12:26 PM
5-7HEAVEN 5-7HEAVEN is offline
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Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by rustycase View Post
Yah!

Post more pics, 57!!!

(Ur motorized bicycle is SO technical I have trouble envisioning all the things u r doing with it, without pics... I'll watch for your vids!)

Best for New Year
rc
I'll post pictures soon.

I'm excited to shoot videos of my commute to work.
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  #2888  
Old 01-02-2012, 08:23 PM
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breno breno is offline
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Default Re: what did you do to your motor bike today?

Quote:
Originally Posted by moonerdizzle View Post
That is a sweet expansion chamber. What is it off of?
betta late than never..
The pipe is off a LEM 50cc suzuki dirtbike cant remember the exact yr model.
Almost went with a pipe off a kx65 but the fella recommended this pipe due to the china donk not revving out as hard as the kx65 making the powerband up almost out of its range. This LEM 50 pipe works really well the exhaust note distinctively changes when the band is kicking in love it.

Well today Ive managed to redo the header pipe and im very happy with it. Mind you it took me 4hrs for roughly 4" of pipe but are well.
Managed to match the header to the exhaust port and keep a nice flowy bend.
Expanded the incoming header pipe then expanded the exhaust to slide the header pipe in then used a ball point hammer to lightly marry it all up ready for a weld. Got the best result I could think of doing leaving minimal catch points for the exhaust flow. Just waiting on the exhaust wrap to come in. Ive noticed the bike will what seems 4 stoke a little until the pipe is hot then its gr8.

I have attached a pic of my plug after going for a 1/4 throttle run lightly loaded.
The bike sounds like it just doesnt want to run there (VM18 mikuni) just abit more throttle to half from say 10m/hr and it starts to sound right and will accelerate almost up to top speed with maybe 3 little 4stroke blips which doesnt really seem to hinder the accleration.

Funny thing was though after doing the 1/4 throttle run I was expecting to see an oily plug only to find it a nice clean tan colour.
Attached Images
File Type: jpg new header.JPG (110.1 KB, 37 views)
File Type: jpg comparison.JPG (123.8 KB, 34 views)
File Type: jpg quart. throttle plug.JPG (73.0 KB, 34 views)
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  #2889  
Old 01-02-2012, 08:53 PM
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DaveC DaveC is offline
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Default Re: what did you do to your motor bike today?

Don't wrap the exhaust wrap all the way to the flange. The wrap does too good of a job holding heat in the metal. Street rodders are finding their header pipes cracking at the flange from the heat. If the wrap starts like 6-8 inches from the flange then there's no problems. Yes, wrapping to the flange makes HP in race cars but when you'r a racer headers are considered a disposible part, like in NASCAR or NHRA.


Most of us regular people can't afford this
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  #2890  
Old 01-02-2012, 09:15 PM
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breno breno is offline
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Default Re: what did you do to your motor bike today?

Thanx for your input bud. I will start the heat wrap an inch or so after the new header pipe. The metal and what not is free for me due to my trade but nonetheless its not worth having to do it all over again. Thanx bud.
Just got back from another ride never noticed how loud that ringing of the fins gets until today as I was listening closely to motor. Mostly evident when crusing along at say
55km/hr at 1/4throttle.
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