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  #7191  
Old 05-21-2014, 06:03 AM
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Davezilla Davezilla is offline
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Default Re: what did you do to your motorized bicycle today?

That IS really fast for a bicycle... what kind of bike is it? I've heard of some of the more powerful e bikes hitting those kind of speeds but those builds are usually on downhill frames or frames and forks that are beefed up to withstand higher speeds.

You could probably run balance beads in your tubes to balance the tires which would also help with stability at those speeds. One of my friends has a bike shop and swears by the balance beads compared to conventional weights on the spokes or rims.

Also, the tires need to be in perfect condition and built to go fast, most the better namebrand tires will handlde it just fine.

Of course slowing the bike down to the mid/high 40's is always the safest bet...

For me, I hadn't had any time to do much with mine the past few days, but I did score me a really cool Girvin Vector fork for it earler And all my parts for the new carb are all finally here, mainly new jets and such to tune it in just right. So far I hadn't took mine past about 30 or so mph, but I'd like to get it as fast as yours once it breaks in all the way. I'm hoping with that new fork, better wheel bearings, and better tires it should be stable enough to safely go over 40, I'd like to gusset all the stress points on the frame too. It's plenty stable at the 30+ speed range so I don't see any problems pushing it another 10 mph faster.
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  #7192  
Old 05-21-2014, 12:28 PM
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CTripps CTripps is offline
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Default Re: what did you do to your motorized bicycle today?

Yesterday I gutted the Mag out of the newest build for a motor that needed it. Today I think I'm going to remove the mag-less motor from that frame at rip it to bits or just chuck it. It's been a problem all the way along.. broken spoke in the back wheel, missing brake parts, some other 'bicycle' problems.. the motor doesn't sit well in it (had to use the large tube adapter front mount).. The clutch won't stay adjusted (I tweak until the backl wheel doesn't turn when the lever is in and 'locked', take it for a 200' test and when you lock the lever in again the back wheel spins) the clutch lever casting snapped in two places as I was tightening it to the handlebars (leaving me a lever and a U-shaped piece of white metal junk).. it chewed and destroyed a masterlink on a test.. Overall, bad juju. So either I de-motorise it and get rid of it, or I strip it right down to components. If I do the latter, it might infect other builds though. Maybe I can get someone to give me a few bucks for it as just a bike and be rid of it.
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  #7193  
Old 05-21-2014, 03:43 PM
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Default Re: what did you do to your motorized bicycle today?

Exorcism? Might be a bit expensive but you would have a novel forum thread.
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  #7194  
Old 05-22-2014, 12:38 PM
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CTripps CTripps is offline
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Default Re: what did you do to your motorized bicycle today?

It's a thought.. I'm only out time spent and brake parts and cable on it, the bike was handed off to me by someone who said he was going to Vietnam to teach English a while back. It's back on the to-do list, didn't have time to do anything with it yesterday.
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  #7195  
Old 05-26-2014, 08:35 AM
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Allen_Wrench Allen_Wrench is offline
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Default Re: what did you do to your motorized bicycle today?

A bit of "live & learn" here, and is more along the lines of "What I did to my bike *yesterday*" but I digress:
I was trying to fire ol' Tempus up, peddling her up to speed, and right before I popped the clutch I went through a patch of very fine gravel (between "pea" and "sand"). I popped the clutch and, instead of firing up, the pedal chain popped right off and started dragging on the ground. Now, I knew it wasn't too slack before. Goodness knows I'm always tinkering and otherwise lavishing attention on my bike.
So I walk her over to the side and start trying to thread the pedal chain back on. And guess what I found lodged INSIDE an aperture of the pedal chain! A stone! Somehow, the front wheel had kicked a tiny stone straight back into the pedal chain and it must've landed just right and a sprocket tooth came along and tried to squeeze it in - couldn't - and it popped the chain right off! That must be, like, I dunno, a one-in-a-million thing maybe. Or maybe not; come to think of it, I have had times on pedal bikes growing up when I didn't know why the chain came off.
Anyway, I got the chain back on, and looked long and hard at its tension. All was good. So I climbed back on and started my bike and rode about with the local kids some, then I cruised down a nice, twisting, tree-lined street on a sunny afternoon, thoroughly enjoying the fact that I had nowhere to go and nothing better to do (already mowed the lawn, this was my reward to myself).
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  #7196  
Old 05-29-2014, 02:44 AM
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Default Re: what did you do to your motorized bicycle today?

Few nice little tweaks to make riding more of a joy.
Rattly clutch lever? Adjust cable and replace retainer pin with bolt. No worries.
Chains loose? Easy - move rear wheel back a bit. Done.
Clunk in front disc brake? Just do up the bolts holding the caliper to the forks. Sorted.
Walked out of the shed with a grin. If I had a hat on I would've thrown it on a rack just for good measure.
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  #7197  
Old 05-29-2014, 03:24 AM
SchwinnStingray SchwinnStingray is offline
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  #7198  
Old 05-29-2014, 07:12 AM
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Default Re: what did you do to your motorized bicycle today?

Close shave. This is (was) the bracket I made that keeps my front fender from falling onto the tyre and potentially ruining my pride and paint-job in spectacular fashion.
Now a new one is made of steel about 4 times that thickness.
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  #7199  
Old 05-29-2014, 10:44 AM
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Default Re: what did you do to your motorized bicycle today?

Dang Cruise, that was a good find!
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  #7200  
Old 05-29-2014, 07:46 PM
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Default Re: what did you do to your motorized bicycle today?

Wholly sheepdip, Cruise. Really scary stuff.

Had a front fender let lose and face planted once. Not fun.
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