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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #6061  
Old 09-26-2013, 04:58 PM
BonusParts BonusParts is offline
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by jpullen View Post
I finally changed out my kit spark plug for an autolite 4123. Wow! What a difference it made in performance.
Hit up a napa and grab a dual 90* single ignition lead. cut it in half and you've got a high performance plug wire and a spare. and even if it does nothing performance wise, at least its more reliable!!
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  #6062  
Old 09-27-2013, 03:55 PM
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CaptainDishman CaptainDishman is offline
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Join Date: Feb 2013
Location: Salem, Virginia
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Default Re: what did you do to your motorized bicycle today?

Finally had the time to break out the bike I bought before the summer. Bought it from a guy that couldn't keep the chain on it, but said it ran. The downside, it hasn't run in a couple of years. I took off the head and checked for corrosion, none. Checked the gastank, none. Got a new chain that doesn't really fit the drive sprocket. After some searching of the boards, turns out I need to force the chain on and make it play well with the sprocket. The bike is extremely hard to pedal and the chain and sprocket make the worst noise I've ever heard. I'm not so sure that it is ready to gas and go. This bike is like Frankenstein's monster, barely held together with nuts and bolts and made from about 2 or 3 different bikes. This is going to be the scariest ride ever... wish me luck!
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  #6063  
Old 09-27-2013, 04:23 PM
Rambler Rambler is offline
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Join Date: Jul 2009
Location: U.S.A.
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Default Re: what did you do to your motorized bicycle today?

Went for a ride to Meineke and had them tack a fender washer to the end of my pipe after the original endcap and broke off when i hit a bump in the road. Then I got about 1200 feet away from the garage and lost spark. So I pedaled home and am stuck with a useless bike until I get the darned spark loss figured out. It's not the sparkplug or the cable, I just replaced the magneto not too long ago, and fear it may be the cdi. Will run some tests later when I have some time, but I am grounded for now.

*edit*
Good luck with the franken bike.
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  #6064  
Old 09-27-2013, 06:04 PM
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MadMannArt MadMannArt is offline
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Join Date: Aug 2013
Location: LongBeach, wa
Posts: 47
Default Re: what did you do to your motorized bicycle today?

Ordered a new cylinder! Yippe!
I also contacted Duanne @ Thatadax.com...
Awaiting his shipment to arrive, so I can order a 69cc kit from him!
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  #6065  
Old 09-27-2013, 06:24 PM
FMB42 FMB42 is offline
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Join Date: Sep 2013
Location: Idaho
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Default Re: what did you do to your motorized bicycle today?

I removed the head on my first gas (cheap Eb*y) bicycle engine kit only to find some aluminum "shavings" sitting on top of the piston (this aluminum was probably shaved off of the cylinder stud holes by the threads on the (cyl) studs when it was installed in the factory. Oh well, this is why you should always do a partial or, better yet, a complete tear-down on these engines before you run them. I'm going to replace the studs (and practically every other fastener on the engine) anyway so out they go.

I'm sure am glad that I spent time reading various threads here in the Motorbicycling forum before I began this project (otherwise, I probably would've just started her up right out of the box).

Btw Rambler, did the shop arc or gas weld the fender washer onto your bike? The reason I ask is that arc welding may have knocked out your CDI.
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  #6066  
Old 09-28-2013, 01:39 AM
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Danschutz Danschutz is offline
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Default Re: what did you do to your motorized bicycle today?

Bent my rear axle the other day and Im pretty sure the ride home the bearings gouged the races so I decided to swap my coaster brake wheel back on. As I messed with it I remembered why I didn't like the wheel in the first place, it spins pretty bad. Never having messed with a coaster brake I took it apart and sure enough bearings were pretty dry. So far Ive wiped off all the old grease on the axle and tomorrow I'll regrease everything with red bearing grease and see if it helps a little.

While I have your attention.......

I need some HELP picking out a new rear wheel for my new build.

Its a 70's Huffy frame and I have to spread the frame just a little to get my newer coaster brake wheel to fit so I was wondering can I get a 26 inch freewheel with just one sprocket without all the added width? Something like a bmx rear wheel but 26 inch. Heck even something wide enough for three sprockets may fir.

If you chuckle at my question please remember Im a newb! lol.

Thanks,
Dan.
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  #6067  
Old 09-28-2013, 10:52 AM
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mapbike mapbike is offline
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Join Date: Mar 2010
Location: Central Texas
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Default Re: what did you do to your motorized bicycle today?

Quote:
Originally Posted by Danschutz View Post
Bent my rear axle the other day and Im pretty sure the ride home the bearings gouged the races so I decided to swap my coaster brake wheel back on. As I messed with it I remembered why I didn't like the wheel in the first place, it spins pretty bad. Never having messed with a coaster brake I took it apart and sure enough bearings were pretty dry. So far Ive wiped off all the old grease on the axle and tomorrow I'll regrease everything with red bearing grease and see if it helps a little.

While I have your attention.......

I need some HELP picking out a new rear wheel for my new build.

Its a 70's Huffy frame and I have to spread the frame just a little to get my newer coaster brake wheel to fit so I was wondering can I get a 26 inch freewheel with just one sprocket without all the added width? Something like a bmx rear wheel but 26 inch. Heck even something wide enough for three sprockets may fir.

If you chuckle at my question please remember Im a newb! lol.

Thanks,
Dan.

Dan, if Im following you correctly........ you're wanting a coaster brake rear wheel on the bike.

As far as I know all single speed coaster brake hubs are relatively the same width, if you want a good heavy spoked 26" coaster wheel you can get a good one at a good price at http://huskybicycles.com

I hope Im following what you said correctly....... sorry if I missed something.

Map
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  #6068  
Old 09-28-2013, 12:44 PM
trackfodder trackfodder is offline
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Default Re: what did you do to your motorized bicycle today?

I like the Worksman bike rear wheel. It is about $66 and has 0.10" spokes, 4" sprocket. Coaster brake. Actually, I got fed up with the brake and went to foot-operated bike rim caliper. With a motorcycle front wheel with disk brake/ go kart caliper I can shut down safely from ~55 now.
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  #6069  
Old 09-28-2013, 01:55 PM
Jeckler Jeckler is offline
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Join Date: Jun 2013
Location: Mesa, AZ
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Default Re: what did you do to your motorized bicycle today?

After not doing ANYTHING to mine for over a month due to moving into a new house, I broke it out again yesterday. Ran OK like always, but I decided to mess with the air screw after removing the brass cap. I found that it was screwed in tight. After some tweaking of it and the idle screw, I settled on 1.75 turns out for now. It runs so much better. I still need to use up my break-in gallon, pick up some different jets and get some different oil.
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  #6070  
Old 09-28-2013, 09:31 PM
crassius crassius is offline
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Join Date: Sep 2012
Location: USA
Posts: 2,964
Default Re: what did you do to your motorized bicycle today?

fixed rear fender for the 4th time : (

painted an old barrel black to replace the one on there that had wrong transfer port height from factory

finished first premium build in just over a year as I'm beginning to get a bit of health back - bought 2 more clairmonts while they're on sale to see if I can build 2 more : )
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