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  #7991  
Old 04-10-2015, 01:15 AM
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mapbike mapbike is offline
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Default Re: what did you do to your motorized bicycle today?

Dave, the Z-L rod is 110mm and is the type that doesnt use a caged needle bear on lower journal but rather just loose pin bearings, I had an engine with that set up fail on me one time because they didnt put enough roller pins in and one of them got in a bind and broke at high rpms, sent a piece up through the transfer and I bet you can guess what happened next....lol

as long as it has enough pins and the crank is true it should be a good running engine, that one experience kinda scared me of the Z-L rod engines but I know there are a lot of them out there running good for a long time.

I hope yours does great for you.
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  #7992  
Old 04-10-2015, 08:15 AM
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Davezilla Davezilla is offline
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Default Re: what did you do to your motorized bicycle today?

I hope so too... Looks like I'm gonna need to send a dental mirror in there and see if I can make sure it has all it's pin bearings... The only other way to do this is to replace the crank assembly or press off the crank pin and measure the journals then find a bearing with the same measurements... it's a lot easier to just replace the crank with one of the other ones, but I'll check that all the pins are in there and run it if they are since they really can't fall out unless there's one or 2 missing.

Anyway... let's hope for the best there...
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  #7993  
Old 04-10-2015, 03:05 PM
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mapbike mapbike is offline
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Default Re: what did you do to your motorized bicycle today?

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Originally Posted by Davezilla View Post
I hope so too... Looks like I'm gonna need to send a dental mirror in there and see if I can make sure it has all it's pin bearings... The only other way to do this is to replace the crank assembly or press off the crank pin and measure the journals then find a bearing with the same measurements... it's a lot easier to just replace the crank with one of the other ones, but I'll check that all the pins are in there and run it if they are since they really can't fall out unless there's one or 2 missing.

Anyway... let's hope for the best there...
I bet it will be OK Dave, the 9ne that failed on me back in 2010 had several pins missing, after the failure I could actually see that there was so much space between the pins that some would litterally turn at an angle between rod and journal, if I had of known that ahead of time I wouldn't have ever even run that engine and would have sent it back to BGF for a exchange but I was a noob to this hobbie and I just bolted that engine on and ran it, that lasted about 6-8 miles before it gave it up.

MZMiami is selling so.e of these loose pin bearing cranks, Ive thought about getting one just so I could true i5 up good and use it to buildanoth3r 40mm stroke engine, seems we have no good sources for the good 40mm stroke cranks like that came in the older GenIV dax engines, I sure wish someone was selling those, thats really what I want in all my engines, but I screwed up and didnt order several back when Duane still had them, 8 only had one of them and its in my Taffy bike engine.

Hoping you get the SR going soon, Im sure curious about how it turns out.
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  #7994  
Old 04-10-2015, 04:04 PM
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mapbike mapbike is offline
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Default Re: what did you do to your motorized bicycle today?

Im peddling this green piece of grasshopper junk right now, made a several mile trip, and once again on this very same bike I had some sort of an ignition failure, secong Mag on this one and second CDI, this thing is really getting on my nerves about now.......lol

only engine Ive had to replace any ignition parts on out of all my bikes since 2009.... dont know what the dang deal is with this one.....

well got several mile of up hill peddling to do so gotta go for now......
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  #7995  
Old 04-10-2015, 04:28 PM
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DRBS DRBS is offline
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Default Re: what did you do to your motorized bicycle today?

I know there all not being made to a higher standard these mag coils are junk there changing them have you seen the new motors no more seprate coil and cdi its all in one now what are we going to do to change the ign timing????
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  #7996  
Old 04-10-2015, 08:20 PM
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mapbike mapbike is offline
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Default Re: what did you do to your motorized bicycle today?

Wow what a freaking ride..... Im pooped....!!!

Got hime cjanged out cdi...nothing, changed out mag and it fired up, decided I would try another cdi I had to see if it was good, nothing..... hooked original di back up and still nothing....

I guess maybe I hooked up that cdi that I now know is bad and when I did I fried the new mag coil.....

I really think this engine is cursed or something.....

In five years Ive never once had issue with stock cdi or mag coils until I built this engine and now I cant seem to make them run 100 miles before the give it up, this is the third mag in this engine and the second di.


very frustrating for sure....
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  #7997  
Old 04-10-2015, 10:42 PM
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Panhead Panhead is offline
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Default Re: what did you do to your motorized bicycle today?

Today I replaced the stock 'spoke sandwich' sprocket with an adapter & 44t sprocket from King's - VERY NICE! Those folks stamp their company name on their parts, which are a joy to behold compared to the stuff that comes with the kit. Fit perfectly, and if your hub measures .988" the one inch adapter is just what you want - no shims necessary.
Along with the angled manifold & NT carburetor I added a couple of days ago, my 4 stroke Micargi is beginning to feel less like a project and more like a ride.
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  #7998  
Old 04-10-2015, 11:17 PM
FFV8 FFV8 is offline
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by Panhead View Post
Today I replaced the stock 'spoke sandwich' sprocket with an adapter & 44t sprocket from King's - VERY NICE! Those folks stamp their company name on their parts, which are a joy to behold compared to the stuff that comes with the kit. Fit perfectly, and if your hub measures .988" the one inch adapter is just what you want - no shims necessary.
Along with the angled manifold & NT carburetor I added a couple of days ago, my 4 stroke Micargi is beginning to feel less like a project and more like a ride.
Post some pics!
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  #7999  
Old 04-11-2015, 03:25 AM
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mapbike mapbike is offline
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by Panhead View Post
Today I replaced the stock 'spoke sandwich' sprocket with an adapter & 44t sprocket from King's - VERY NICE! Those folks stamp their company name on their parts, which are a joy to behold compared to the stuff that comes with the kit. Fit perfectly, and if your hub measures .988" the one inch adapter is just what you want - no shims necessary.
Along with the angled manifold & NT carburetor I added a couple of days ago, my 4 stroke Micargi is beginning to feel less like a project and more like a ride.
Thanks for the info on the adapter, I have a 24" mutispeed rear wheel I been wanting an adapter for and it measures around .990 so its good to know that the 1" adapter will work with these wheels, just ordered myself one also.
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  #8000  
Old 04-11-2015, 12:00 PM
BOYGOFAST BOYGOFAST is offline
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Default Re: what did you do to your motorized bicycle today?

Take a guess, where can you find these already installed yeah likely nowhere these days..
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