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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #7961  
Old 04-05-2015, 11:37 AM
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by Motor awesomeness View Post
I stuck a water bottle in my bike for the sound effect as I plan to build one over the summer
Playing cards and clothspins when I was a kid.
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  #7962  
Old 04-05-2015, 03:18 PM
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Default Re: what did you do to your motorized bicycle today?

there are a gang of kids roaming my neighbourhood who all have those bike exhaust things, you know the plastic card with a holder-bracket and a big funnel pipe.

none of those to be seen last year, maybe it was me with my motor that gave them the idea...
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  #7963  
Old 04-07-2015, 01:59 PM
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Default Re: what did you do to your motorized bicycle today?

Still waiting on the bike parts, but I did do an oil change, brake pads, and rotors on my car this morning. Want to keep the 'skills' fresh!
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  #7964  
Old 04-07-2015, 10:00 PM
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Default Re: what did you do to your motorized bicycle today?

Not much to the actual bike but my Super rat bottom end got here the other day so I've been deciding on which jug to install as well as how far I want to go with the porting etc... Got a fresh jug installed along with my dial indicator and degree wheel right now so I can check the port timing then it'll have to come off for any finishing touches. The mag cover on this one is noticeably bigger than a regular PK80 and it has a few smal vent holes at the bottom... which by their self seem to be quite useless since there's no other way air can get in or out from under this cover. My plan here is to put a 1/2" hole in the cover so the fan can pull cool air in and then block off the vents at the bottom in favor of making the vent slots just on the other side of the internal CDI, this should supply considerably more cooling air to the cdi unit.
The next mod I'd like to do would be to take the case halves off and match the transfer openings as well as replace the crank and clutch bearings with the good stuff, and I might as well do a quick balance job on the crank while I got it apart as well.
I'm not in a big hurry to get this engine up and going since the bike I'm installing it on won't be here until next week... and it's gonna need it's share of mods and paint etc. The bike I got for this engine is an OCC Stingray but it's going to need a little TLC as well as a set of ape hangers, a solid seat post and layback seat, and I'm thinking about wiring this one up with a headlight, tail light, and turn signals that can be run off a rechargable battery... A LOT more to come on this one and I'll post a project thread as soon as the bike gets here...

For the silver mountainbike, it's getting a new jug with considerably bigger ports, better port timing, a Mikuni VM18 carb, a KX65 pipe, and a few other goodies... I'm also toying with the idea of putting a reed valve on this one as well... This bike is already fast, but I want to make it even faster. my only real time to ride is in the mornings before I open up shop and I need it to be able to maintain 35 to 40mph in order to keep up with the traffic. It does this already but I would like just a bit more so I can get away from a tailgater or pass up a slower car if they're in my way etc...
I pulled the jug off this one the other day after it's had about 3 tanks of fuel thru it and everything looks immaculate, the bearings feel nice and free with no play, the head just had a little brown tint to the combustion chamber that wiped right off, and the piston looked just the way I left it as well except for a light coat of black on the piston crown and the spark plug had that light chocolate brown color on the insulator. Inside the cylinder it was mirror smooth and the rings looked perfect as well. I do plan on de glazing the cylinder and putting on new rings if I keep this one, but I got another new one coming in with the nice wide transfers so I'll most likely do some serious port work on the new one and use it along with a new set of rings.
I'll also be stripping this one down to the frame to weld in some more gussets in just the right places, then strip it down to bare metal for a real paint job.
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  #7965  
Old 04-07-2015, 10:09 PM
BOYGOFAST BOYGOFAST is offline
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Default Re: what did you do to your motorized bicycle today?

looked it over again going to reassemble it for 18th time this time with the 48 coming in the mail.......the 66 won't do if the 48 works fine if not will wait see what's next...
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  #7966  
Old 04-08-2015, 01:10 PM
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Default Re: what did you do to your motorized bicycle today?

Finally got around to fabricating the exhaust for my wife's Huffy.
Her birthday gift .
( The bike not the exhaust....)
Was a great day. It was nice to get back to work on a gas bike.


I know , its got an odd routing path .
It needed to clear the stand but not interfere with the bags.



As the bike only has 11 miles on it at this point , I'm not sure what this design will do to the top end but it did help the bottom.....

And yes , we are one of those couples that wear matching sweat shirts ............

My bike:
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Last edited by boxcar; 04-08-2015 at 01:13 PM.
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  #7967  
Old 04-08-2015, 03:57 PM
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by boxcar View Post
Finally got around to fabricating the exhaust for my wife's Huffy.
Her birthday gift .
( The bike not the exhaust....)
Was a great day. It was nice to get back to work on a gas bike.


I know , its got an odd routing path .
It needed to clear the stand but not interfere with the bags.



As the bike only has 11 miles on it at this point , I'm not sure what this design will do to the top end but it did help the bottom.....

And yes , we are one of those couples that wear matching sweat shirts ............

My bike:
Looks good to me, its all about function anyway to me, I do what I do to my bikes because thats what I want, I do care what others think to an extent, but ultimately what I want for my own reasons always trumps others opinion....lol

Your wifey should be proud, you fixed her up a feally nice looking bike there and I bet she will really enjoy it and I like the exhaust, should be fairly quiet and do just fine for a low keyed cruising machine.

My wife only has one shirt that is similar but not in color to anything I wear, I have a ouple Harley Davidson T Shirts and other depicting motorcycles and my wife has a Pink and Black Harley Davidson ladies shirt that she will wear sometimes, other than that I wear Camo and Pearl Snap weztern shirts most of the time and she wont wear those.....lol!

She didnt grow up in the country like me, she grew up in Dayton Ohio so in many ways Im a litgle to rustic for her, she thought I would be a cool adventure when we met, but I think this ole Texas country boy has became more of a trial to her now than an adventure because she has tried to get me to wear a pink dress shirt and thjngs like that and she dound out real quick she'll have to bury me in one if she ever wants to see me in anything like that....lol...!

I always think its cool when I see husband and wife dressed similar like you said about the sweatshirts, that always makes me think yall must have a very close relationship and a darn good understanding, not a thing wrong with that in my book.
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  #7968  
Old 04-08-2015, 04:16 PM
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boxcar boxcar is offline
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Default Re: what did you do to your motorized bicycle today?

Pink ? Don't do it man!!!!!!!
The matching sweat shirts In my house tend to gravitate more towards AC/DC , the Who , and Lynerd Skinerd.... Or flannel....
My wife and I grew up in the same town ( small ), her brother was a friend of mine.
I used to pick on her when we were young...
I'm not sure why she married me.
Just luck I guess.
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  #7969  
Old 04-08-2015, 09:13 PM
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Davezilla Davezilla is offline
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Default Re: what did you do to your motorized bicycle today?

That's a really nice looking bike there and the pipe looks good to me too... for has to follow function and that's what looks best as well....
What I really like is that Datsun 620 4x4 you got in the background... I got a 720 4x4 over here but would love to put a 620 cab and bed on that chassis...
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  #7970  
Old 04-08-2015, 09:17 PM
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Davezilla Davezilla is offline
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Default Re: what did you do to your motorized bicycle today?

Still extremely busy at the shop so not a lot done today. .. just got the dial indicator and degree wheel installed on the new engine but got too busy to start taking measurements... I should have the time to at least get this one set up and ready to run this weekend if all goes well. ..
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