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Topic Review (Newest First)
12-23-2011 11:27 AM
lt1silverhawk
Quote:
Originally Posted by matts37chev
i think you just need to find a cheap weedeater on craigslist
Lol!I looked it up and someone's selling a 31cc motor from a weed eater with a broken shaft for $20 obo. Tempting. Ya know, its too bad no one's selling one as part of a package deal with that drill press I want.


Man, by the time we're done with this, I'm gonna end up with the most aerodynamic, street-legal, single-seater go-kart ever. It'll probably be powered by pedals, gas, hydrogen and electricity, each one available on demand. Since its got electric power, then might as well have a wind mill and a solar panel that serves duty as a hard-top convertible roof. And it'll all be controlled via an iPhone.


If you think I've lost it, check this out: "Utah duo create 'quadbrid' vehicle"




Quote:
Originally Posted by deckofficer
My 92 year old dad about 4 years ago and my 30 something nephew, so as you know in my family it is "crazy uncle Bob" and what has he done now?
Suppose we can call you that here as well lol! It's so cool that you've got family members who enjoy the same hobbies you do.

Quote:
Originally Posted by deckofficer
Next project, I'm building an electric dinghy for the sail boat. Will be a catamaran style hard bottom inflatable, Lithium batteries, 50+ mile range per charge, and hang on to your hat, 60+ mph. I did my thesis on minimum wetted surface vessels (fast ferries), and got the numbers to work out. With the current drop in price on solar panels, will refit the galley to all electric, and with the dinghy also electric, I will no longer carry propane or gasoline on board.
I think I read about it on your forum. Obviously you've been playing with electricity long enough to have the confidence you do. I am definitely interested in updates when you undertake this project.




Quote:
Originally Posted by willowbilly3
Funny stuff. I love bikes but gave up my last cruiser years ago when I bent the crank trying to muscle it up a hill on the bike path. I have an old 27 speed Raleigh that I like but it's getting tired and skips the chain in the lowest gears. I also have an old 18 speed Schwinn I really like.
I'm not facing any hills per say, at least not compared to what you would call hills over in Black Hills, SD. I'm currently fighting a bridge over a wash. I just don't think cruisers are made for inclines. Hopefully I won't break anything (aside from the busted ego, of course).

Quote:
Originally Posted by willowbilly3
If I had the extra money, I would buy one of the new 29 inch bikes, love those huge wheels. $1500 for a bike is not happening tho, that's a lot of car parts.
Got that right. Car parts, or a new project. I did look up the 29" bikes and found a few that were about $600. Still a bit much though.
12-23-2011 03:45 AM
willowbilly3 Funny stuff. I love bikes but gave up my last cruiser years ago when I bent the crank trying to muscle it up a hill on the bike path. I have an old 27 speed Raleigh that I like but it's getting tired and skips the chain in the lowest gears. I also have an old 18 speed Schwinn I really like. If I had the extra money, I would buy one of the new 29 inch bikes, love those huge wheels. $1500 for a bike is not happening tho, that's a lot of car parts.
12-22-2011 11:26 PM
deckofficer My 92 year old dad about 4 years ago and my 30 something nephew, so as you know in my family it is "crazy uncle Bob" and what has he done now? Next project, I'm building an electric dinghy for the sail boat. Will be a catamaran style hard bottom inflatable, Lithium batteries, 50+ mile range per charge, and hang on to your hat, 60+ mph. I did my thesis on minimum wetted surface vessels (fast ferries), and got the numbers to work out. With the current drop in price on solar panels, will refit the galley to all electric, and with the dinghy also electric, I will no longer carry propane or gasoline on board.
12-22-2011 10:19 PM
matts37chev i think you just need to find a cheap weedeater on craigslist
12-22-2011 10:05 PM
lt1silverhawk
Quote:
Originally Posted by nine4gmc
this thread went from one of the funniest posts I have read, to the fastest electric scooter I have ever seen in 1 page, WIN!
That's the beauty of this forum and its members! Lots of humor and lots of knowledge!




Quote:
Originally Posted by deckofficer
Like I said, there are a lot of hub motors out there. Just remember 746 watts = 1 hp, and P=IxE. Lithium batteries are coming down in price, and unlike the 300 cycles you get from a deep cycle lead acid battery, they will give you 2000+ cycles plus for any given energy storage, are 1/4 of the weight. Some controllers offer regen if you want to stretch your riding range. Don't get crazy like I did, this scooter will out accelerate my Corvette to 40 mph, and if it was a bull in the rodeo, would have a perfect record, 5 riders tried it, 5 wound up on their butts.

Bob
Quote:
Originally Posted by deckofficer
The controller in those pictures was only a 400 amp rated for 1 minute. Unlike gas and diesel engines, electric motors are capable of a huge peak output for 5 seconds. The Etek PMDC motor I'm using is only rated at 5 hp continuous, 15 hp for 1 minute, and for 5 seconds, what ever your controller and battery can muster. Since the AGM batteries can crank at 680 amps for 10 seconds, it was time to upgrade to a 700 amp controller. I'm still at 48 volts, but could push to 72 volts. At 48 volts X 700 amps = 33,600 watts / 746 = 45 hp for 5 seconds. You have to remember that on an electric motor, all torque is available at zero rpm, that is why even with a thorough pre-flight, everyone that tried to ride it lost control. At 72 volts (if I upgrade) it would be 72 X 700 = 50,400 watts / 746 = 67.5 hp on a scooter that weighs 113 lbs.
Is that your father beaming proudly in the first picture?


I very much appreciate you breaking down the math for me on this since my physics and math aren't all that strong. Now I have a better understand of the numbers when I look up the conversion kits.


So, is there anything you haven't hooked up a battery to? Lol! That scooter looks killer! 45 hp on that little thing? Yikes!




Quote:
Originally Posted by matt167
Theres a guy on Venice beach that builds gas powered beach cruisers with the china engines. They fall thru the cracks. not legal but the engines can be had from a few of the suppliers for california market..
Is this the guy you're talking about: Venice Motor Bikes




On a related note, I have been looking for more information on these gas conversions being illegal. Turns out they are legal because they qualify as mopeds, which require a simple application to be submitted. Cops on the other hand may not be up to date on this, judging from this thread: "CA Laws"
12-22-2011 03:39 PM
deckofficer The controller in those pictures was only a 400 amp rated for 1 minute. Unlike gas and diesel engines, electric motors are capable of a huge peak output for 5 seconds. The Etek PMDC motor I'm using is only rated at 5 hp continuous, 15 hp for 1 minute, and for 5 seconds, what ever your controller and battery can muster. Since the AGM batteries can crank at 680 amps for 10 seconds, it was time to upgrade to a 700 amp controller. I'm still at 48 volts, but could push to 72 volts. At 48 volts X 700 amps = 33,600 watts / 746 = 45 hp for 5 seconds. You have to remember that on an electric motor, all torque is available at zero rpm, that is why even with a thorough pre-flight, everyone that tried to ride it lost control. At 72 volts (if I upgrade) it would be 72 X 700 = 50,400 watts / 746 = 67.5 hp on a scooter that weighs 113 lbs.
12-22-2011 03:21 PM
nine4gmc this thread went from one of the funniest posts I have read, to the fastest electric scooter I have ever seen in 1 page, WIN!
12-22-2011 02:59 PM
deckofficer Like I said, there are a lot of hub motors out there. Just remember 746 watts = 1 hp, and P=IxE. Lithium batteries are coming down in price, and unlike the 300 cycles you get from a deep cycle lead acid battery, they will give you 2000+ cycles plus for any given energy storage, are 1/4 of the weight. Some controllers offer regen if you want to stretch your riding range. Don't get crazy like I did, this scooter will out accelerate my Corvette to 40 mph, and if it was a bull in the rodeo, would have a perfect record, 5 riders tried it, 5 wound up on their butts.

Bob



A 500 lb battery trailer being towed by the scooter.


12-22-2011 12:56 PM
lt1silverhawk First off, my apologies for not posting this under Off Topic like I meant to do. The trauma of losing a race, ya know...




Hay Matt,
Quote:
Originally Posted by matts37chev
more HORSEPOWER, that fixes everything


if I remember correctly, on that model (and some others) if you run it at full throttle all the time, from now on
the horsepower will slowly start to increase (along with some minor weight reduction)
Well, running at full-throttle from the beginning might've been my problem. I was out of breath and strength pretty quick. But I suppose practice does make perfect, and should help improve the power-to-weight ratio in the long run.

Quote:
Originally Posted by matts37chev
or you could start pooling to work, it'll be a little faster
Lol! I'd be in serious trouble if my pooler called in sick!




Hey Cobalt,
Quote:
Originally Posted by cobalt327
There was a long-standing bicycle land speed record held by a doctor, who rode his 1-speed bicycle (the front sprocket was HUGE) behind a hot rod PU truck w/a big wind break strapped to it. He eventually did nearly 140 MPH. He was shown at speed wearing what looked like a cross between a wet suit and a speed skater's outfit in a Hot Rod mag (might have been a yearbook).

He's mentioned in passing HERE, where the record was broken by a newfangled bike.
That was actually a very interesting read. And yes, that sprocket is very large, helps to attain faster speeds with less pedaling I suppose. 140 mph? I can't even imagine that.




Hey Nolan,
Quote:
Originally Posted by OLNOLAN
Thats about the funniest chit I heard today! Put a two stroke engine on it. 100 mpg or pedal when you run out of gas. There is a guy around here that runs one to the store every day, hauling anus. Nolan
Shoot, if I had my way, there'd be a miniature LT1 on it! Some of these gas conversion kits I've seen are rated at 40+ mph, so I'm sure it feels fast on a bike. 100 mpg is always a nice bonus.




Hey Bob,
Quote:
Originally Posted by deckofficer
Sounds like it is time for a hub motor. There are a lot to choose from, cheap China build to quality USA build. 250 watts to over 3000 watts.

http://www.electricrider.com/crystalyte/

Bob
Good recommendation, as I did not know these existed. I went to the link you posted and thought the pricing on those units was a bit much. however, I did do a search on Amazon and eBay and they've got much cheaper units for sale. I am quite interested in such an upgrade now, and I would like something similar to the Currie Technologies Power Kit. Its the only complete kit I've found that includes the battery. Top speed of 10 - 15 mph with normal pedaling and max range of 10 -15 miles. $300 isn't too bad. However, the battery is rated at only 200 cycles. Another one that seems decent is Electric Bicycle Conversion Kit SLA.




Hey Joe,
Quote:
Originally Posted by NamelessJoe
maybe you could go electric or look into the 2 stroke front wheel hub motors that run on gas in a bottle holder? you might find something Cali legal?.... or get a 3 speed rear wheel it just has a little toggle thingy that will strap to your handle bar
Using the water bottle as the gas tank? Now that's genius! I did look up the three-speed rear wheel conversion kit and found only one: Shimano Nexus 3 speed Rear Wheel w/ Coaster Brake 26". I thought it was a bit pricey, a little more than buying another bike.




Hey Matt,
Quote:
Originally Posted by matt167
Theres a guy on Venice beach that builds gas powered beach cruisers with the china engines. They fall thru the cracks. not legal but the engines can be had from a few of the suppliers for california market..
Wow, you know more about my area than me lol! May have to head over to Venice one of these days, visit Muscle Beach, may be a few bike shops.

Quote:
Originally Posted by matt167
I have a 66cc on a Mountain bike. rode it like it was a dirt bike down in some trails. the straight plug head had developed leaky plug threads and I bought a new cylinder and ported it, and bought the slant head for higher compression. it's still in peices tho
Dude, you moded your bike motor? Sweet! Put up some pics if you got any.




Hey Cal,
Quote:
Originally Posted by cal1320
Invert the handle bars. This will give you a lower profile in the wind.
Loose the front reflector. It's like a billboard. Too much drag.
Mill the thickness down on the pedals. Drag and weight reduction.
Remove reflectors from spokes. This is a *****in blacked out dangerous ride (save the reflectors for some Nancy boy or a peroid correct restoration).
Add a playing card to hit the spokes. I would suggest a face card. Just the noise alone is worth a tenth in the quarter. Vintage wood clothes pins are faster than the new plastic ones.
You've done this before, havent' you?

Quote:
Originally Posted by cal1320
Oh wait. I just noticed the seat....... uhhh you aint goin nowhere fast if you need a seat that big.
Hey now, I told you about my egg-nog addiction! . To be fair, that is the only factory option for the "interior". After all, it is a big comfy cruiser so its supposed to be that big.




Hey Bob,
Quote:
Originally Posted by boatbob2
Buy a HONDA motorcycle,then you wont have to worry about getting passed by a bicycle !!!!!!!!!!!!!
I seriously have been thinking about getting into motorcycles. I unfortunately fell off of one during a simple part of the test at the end of the riding class. Hurt my wrist and never touch a motorcycle again. My commute has been reduced greatly recently so I am again considering buying an older motorcycle. Hopefully insurance isn't too much.




Thanks guys for the laughs and quite a bit of new knowledge. This conversation actually might lead me to a new project!
12-22-2011 11:38 AM
boatbob2
Speed.......

Buy a HONDA motorcycle,then you wont have to worry about getting passed by a bicycle !!!!!!!!!!!!!
12-22-2011 08:02 AM
cal1320 [/QUOTE]


Invert the handle bars. This will give you a lower profile in the wind.
Loose the front reflector. It's like a billboard. Too much drag.
Mill the thickness down on the pedals. Drag and weight reduction.
Remove reflectors from spokes. This is a *****in blacked out dangerous ride (save the reflectors for some Nancy boy or a peroid correct restoration).
Add a playing card to hit the spokes. I would suggest a face card. Just the noise alone is worth a tenth in the quarter. Vintage wood clothes pins are faster than the new plastic ones.


Oh wait. I just noticed the seat....... uhhh you aint goin nowhere fast if you need a seat that big.
12-21-2011 09:30 PM
matts37chev or you could start pooling to work, it'll be a little faster
12-21-2011 09:24 PM
matt167 Theres a guy on Venice beach that builds gas powered beach cruisers with the china engines. They fall thru the cracks. not legal but the engines can be had from a few of the suppliers for california market..


I have a 66cc on a Mountain bike. rode it like it was a dirt bike down in some trails. the straight plug head had developed leaky plug threads and I bought a new cylinder and ported it, and bought the slant head for higher compression. it's still in peices tho
12-21-2011 09:03 PM
NamelessJoe maybe you could go electric or look into the 2 stroke front wheel hub motors that run on gas in a bottle holder? you might find something Cali legal?.... or get a 3 speed rear wheel it just has a little toggle thingy that will strap to your handle bar
12-21-2011 09:03 PM
deckofficer Sounds like it is time for a hub motor. There are a lot to choose from, cheap China build to quality USA build. 250 watts to over 3000 watts.

http://www.electricrider.com/crystalyte/

Bob
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