Cycling and bicycle discussion forums. 
   Click here to join our community Log in to access your Control Panel  


Go Back   > >

General Cycling Discussion Have a cycling related question or comment that doesn't fit in one of the other specialty forums? Drop on in and post in here! When possible, please select the forum above that most fits your post!

User Tag List

Reply
 
Thread Tools Search this Thread
Old 12-17-06, 04:14 PM   #1
0_emissions :=)
Senior Member
Thread Starter
 
Join Date: May 2006
Bikes:
Posts: 201
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Motorized bikes...any luck?

Hey, anyone ahd luck with these motors for MTB's? It seems the only place I can find them is on ebay, and i'm super sketchy about it. I was reading the feedback on the two biggest sellers, the negatives are pretty bad. I'm really interested in these for the days when i'm tired, or just lazy Anyone bought one? And for the record, I want one of the motrs that mount inside the front triangle, with the gas tank on the top tube.
__________________
yep.
0_emissions :=) is offline   Reply With Quote
Old 12-17-06, 04:41 PM   #2
Retro Grouch 
Senior Member
 
Retro Grouch's Avatar
 
Join Date: Feb 2004
Location: St Peters, Missouri
Bikes: Rans Rockst (Retro rocket) Rans Enduro Sport (Retro racket) Catrike 559, Merin Bear Valley (beater bike).
Posts: 26,731
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quoted: 137 Post(s)
That's kind of an odd question coming from a guy with "0 emissions" for his screen name.
Retro Grouch is offline   Reply With Quote
Old 12-17-06, 06:34 PM   #3
velonomad 
Older I get, Better I was
 
velonomad's Avatar
 
Join Date: Nov 2003
Location: Greenfield Lake, Wilmington NC
Bikes: '14 BD Lurch Fatbike, '10 custom road,'06 custom expedition, '94 Yokota Tandem, '88 custom MTB
Posts: 1,711
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 15 Post(s)
I know a few people over the years who have tried some of these kits, if they work they don't last that long and parts can be tough to find since most of the dealers are fly-by-nights who don't have a long term interest in the product. For lazy days you are better off with a moped. With a little patience you can find good used mopeds under $500.
velonomad is offline   Reply With Quote
Old 12-17-06, 08:38 PM   #4
Dr.Deltron
Guest
 
Bikes:
Posts: n/a
Mentioned: Post(s)
Tagged: Thread(s)
Quoted: Post(s)
I have recently set-up a couple of friends bikes with a StokeMonkey motor attached to an XtraCycle.
They report awesome results so far!
Google XtraCycle & CleverChimp for more info.
The motor is electric so you can continue using your current 0 emission handle!
  Reply With Quote
Old 12-18-06, 06:10 AM   #5
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by 0_emissions :=)
Hey, anyone ahd luck with these motors for MTB's? It seems the only place I can find them is on ebay, and i'm super sketchy about it. I was reading the feedback on the two biggest sellers, the negatives are pretty bad. I'm really interested in these for the days when i'm tired, or just lazy Anyone bought one? And for the record, I want one of the motors that mount inside the front triangle, with the gas tank on the top tube.
I've never had an electric, and I do not have the type of kit you're considering.
Concerning the gasoline-powered bike engines--
The only widely-held opinion I heard was that the friction-drive units do not work very well.

Other than the friction-drives, there's a few different chain-drive units (all Chinese-made and rather similar) and one belt-drive unit with various imported engine options and other parts made in the USA. The chain and belt drives both have their advantages and drawbacks. The belt-drives are more reliable but more expensive and not easily possible to modify at all; the chain-drives cost less and can withstand more power and allow different gearing and transmission options, but they have lots of reliability issues that the belt drive won't have.

I have tried one of the belt-drive Golden Eagle units. I have only run it for a couple hours time so far, and it appeared to work okay but (for reasons unrelated to the engine setup itself) I don't have it on a bike right now.
This is a series of pages I did on it:
http://www.norcom2000.com/users/dcim...d_bicycle.html
...I will most likely obtain a cheap MTB sometime in the future and put the engine onto that.
--------
The following is a forum that deals with motorized bicycles, mostly gas-powered, and mostly the Chinese chain-drive kits: http://www.motor-bicycles.com/
~
Doug5150 is offline   Reply With Quote
Old 12-18-06, 06:41 AM   #6
sherpa93
Senior Member
 
sherpa93's Avatar
 
Join Date: Apr 2006
Location: Upper Pooristan
Bikes: 1993 Dorado sherpa
Posts: 90
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Ive done one Zero. I dislike these threads because the bike purists tend to
beat you up. I have about 2000 miles on this one. Its a 25cc 4 cycle Subaru
(Robin) 1hp. Its a golden eagle. They are great folks to deal with.
I did this because I was recovering from broken collar bone. Take some pressure
of my shoulder. Its a super grocery getter.

Note I pedal this more than motor it now. As a rule I dont run it in town
and certainly not the MUP! And by all means dont disturb the serenity of
quiet neighborhoods in the evening. Its called RESPECT
Weighs 12 lbs (motor 6lb). 47 lb total w/bike.
It would be difficult pedaling a 100lb Moped! Rear rack is self made. Ive put
over 85lbs on this rack. With 70 lb load It will still do 27mph. 32 if you pedal.
Ive passed up some stunned roadies.

This little robin is work of art. Its clean as a whistle even after all the miles.
Easy starting with decompression. Torque curve on this motor is pretty much
a straight line. Meaning same tork at 4k rpm as 7500rpm. For a bike it perfect.
Its barely audible at idle. At speed its mopedish sound.. 240 mpg avg.
260mpg just putting along. As it sits with 17oz tank and 30oz bottle range is 85 miles.
Little over a penny a mile.

At any rate I like this setup. Efficiency is important for range and gas weighs 6 lbs gal.

FWIW Why would you want a hot motor between your ankles?

I can expound some more info but Im really not up to waxing philosophical of why
one shouldnt do this.
Attached Images
File Type: jpg LR back sooby 25 sherpa.jpg (58.5 KB, 20 views)
File Type: jpg Sherpa loaded Jun 06 HTD sooby 25cc left side.jpg (55.5 KB, 28 views)
sherpa93 is offline   Reply With Quote
Old 12-19-06, 02:55 AM   #7
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by velonomad
I know a few people over the years who have tried some of these kits, if they work they don't last that long and parts can be tough to find since most of the dealers are fly-by-nights who don't have a long term interest in the product...
There are a couple places that have been selling the Chinese kits for a long time. Some of the parts don't last long, but then, replacement parts don't cost a lot either.
Quote:
...For lazy days you are better off with a moped. With a little patience you can find good used mopeds under $500.
A lot of this is on my web pages, but just to hit a few high points:
--BEFORE you spend money for one of these kits, you should really find out the legal status of them in your locale (state). Different states have different laws on what is required to use them on the street, or if they can even legally be used on the street at all. And bicycle path use is another whole separate question as well.

--Another point I make on my site is that a bicycle used at ~30 mph all the time will get pounded a LOT. I normally cruise at ~15 mph and many roads that were reasonably smooth at that speed were pretty jarring at twice as fast. Most people who ride motorized bicycles a lot use suspended MTB's or beach-cruisers, so they can run huge balloon tires for shock absorption. You could put one of these kits on your 700c x 23mm road bike, but unless you're track riding, you're gonna be fixing a LOT of pinch-flats. If you expect to use a motorized bike a lot at full-speed, then you really want a bike that can run the fattest tires you can find.

Quote:
Originally Posted by Dr.Deltron
...I have recently set-up a couple of friends bikes with a StokeMonkey motor attached to an XtraCycle.... The motor is electric so you can continue using your current 0 emission handle!
A lot of people buy the electric drives for their ease of use (pushbutton power) and their silent operation (running "stealthy" and not bothering with any sorts of licensing or use-restriction issues) but the electrics can be deceiving in three ways:

---The first & second ways are that electric motors have a lot of torque from a standstill, but their batteries run out of power relatively quickly when pushed hard for longer periods. When someone test-rides one up and down the street in front of the bike shop, they get to feel the awesome low-speed torque, but they don't ride it far enough to see how quickly the batteries will discharge under hard use. If you look at electric-bike online forums, by far the main question asked is how to get more endurance out of these setups. It doesn't matter if people buy the cheap setups or the expensive ones; they ALL end up wishing the batteries would last longer.

---The third way is that many people just assume that electrics are cheaper to operate, and that they are "better for the environment" because they don't have a stinky exhaust pipe--but if you use an electric bicycle/vehicle a lot, their cost-per-mile can actually be several times higher than what a comparable 4-cycle gasoline engine would cost after you factor in regular battery replacement, and it is very debateable if their ecological impact is lower than a 4-cycle gasoline engine overall. One of the pages I have up goes into this in detail.

If you want an electric setup then lay your money down and get one--but don't buy one because you think you're saving the planet. After all is considered, compared to a gasoline setup, you may not be doing Gaia any favors.
~

Last edited by Doug5150; 12-19-06 at 03:15 AM.
Doug5150 is offline   Reply With Quote
Old 01-13-07, 02:17 PM   #8
0_emissions :=)
Senior Member
Thread Starter
 
Join Date: May 2006
Bikes:
Posts: 201
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Retro Grouch
That's kind of an odd question coming from a guy with "0 emissions" for his screen name.
Ha ha, I'm still (mostly) a no emissions vehicle I just wanted to try something new
We got it mounted and it seems to have good compression. Me likes! The only thing is the chain tension is a B**ch to set up and keep right. Still, it'll be fun for those summer cruiser rides. I just need to find a set of good ape-hangers now
__________________
yep.
0_emissions :=) is offline   Reply With Quote
Old 01-18-07, 08:59 PM   #9
0_emissions :=)
Senior Member
Thread Starter
 
Join Date: May 2006
Bikes:
Posts: 201
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Well, the clutch sucks. It's made of such poor quality, i'll probably have to make a better one out of a lever myself. Other than that, rock on! We had this thing burning down the street! I'll post a pic when I can
__________________
yep.
0_emissions :=) is offline   Reply With Quote
Old 01-18-07, 09:26 PM   #10
Shortrider06
Senior Member
 
Shortrider06's Avatar
 
Join Date: Oct 2006
Location: Chula Vista, San Diego
Bikes:
Posts: 219
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Best engine right now is from Bikeengines.com
Shortrider06 is offline   Reply With Quote
Old 01-18-07, 09:31 PM   #11
gpsblake
Walmart bike rider
 
gpsblake's Avatar
 
Join Date: Aug 2004
Location: South Carolina
Bikes:
Posts: 1,889
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Walmart sells one ready to ride except for bicycle assembly. $279.46 plus shipping
http://www.walmart.com/catalog/produ...uct_id=5391437

Quote from the website:
Real transportation for pennies per charge! This Comfort Series electric bicycle has a unisex low-standover-height design with suspension fork and removable battery box. It reaches a top speed of 15 MPH with a range of 18 to 25 miles with normal pedaling. For young adult to adult up to 240 lbs.

* 450W of power from a DC earth magnet Motor
* Plug and Play battery box design with easy-access charger port
* UL-listed Currie Smart Charger with 1-color LED status display
* Top speed: 15 mph (rider weight and terrain contingent)
* Range: up to 25 miles with normal pedaling
* Alloy linear pull brakes
* 26-inch alloy rims
* High-rise handlebars with adjustable rise stem and Krayton grips
*
* Shimano 7-speed gearing with twist throttle
* Comfort design saddle with alloy Post
* Aluminum comfort frame, unisex
* Alloy cotterless crankset and custom chainring with dual sided pedals
* Total weight: 90 lbs
gpsblake is offline   Reply With Quote
Old 01-18-07, 10:02 PM   #12
HiYoSilver
Rides again
 
HiYoSilver's Avatar
 
Join Date: Oct 2004
Location: W. Sacramento Region, aka, Nut Tree
Bikes: Giant OCR T, Trek SC
Posts: 3,259
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by sherpa93
gas weighs 6 lbs gal.
Interesting, water is 8lbs/gal.
HiYoSilver is offline   Reply With Quote
Old 01-18-07, 10:05 PM   #13
HiYoSilver
Rides again
 
HiYoSilver's Avatar
 
Join Date: Oct 2004
Location: W. Sacramento Region, aka, Nut Tree
Bikes: Giant OCR T, Trek SC
Posts: 3,259
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Re original post. Motorized bikes don't make any sense. Either you want a slow ride with other cyclist or you want a vehicle that will keep up with traffic. It's too dangerous being the odd vehicle that drivers don't have experience with and will be more likely to either right hook or left hook you. FYI: a 500cc motorcycle is too small for safe riding with traffic. 750cc is minimum, but I wouldn't be comfortable on anything less than 1000cc.
HiYoSilver is offline   Reply With Quote
Old 01-18-07, 10:41 PM   #14
BearsPaw
Chief Chef
 
BearsPaw's Avatar
 
Join Date: Mar 2006
Location: Philly (Manayunk)
Bikes: 2005 Fuji Touring & 1980s Motobecane Mirage FG conversion
Posts: 226
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by gpsblake
Walmart sells one ready to ride except for bicycle assembly.
Quote:
Originally Posted by gpsblake
* Top speed: 15 mph (rider weight and terrain contingent)
I must admit that I was interested a motorized bicycle for a while. But then I noticed that none of them go very fast. 15 mph top speed? I can go that fast sans motor, without too much effort. What's the point?

OP: If you're going to do this, go all the way and buy a motorcycle/dirtbike (or a Vespa). Honda motorcyles, brand new, go for under $3k and for under $2k you could buy one of their scooters or dirt bikes. And you can easily find a used motorcycle for $5-600.
BearsPaw is offline   Reply With Quote
Old 01-19-07, 10:31 AM   #15
Doug5150
Senior Member
 
Join Date: May 2005
Location: IL-USA
Bikes:
Posts: 1,661
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by BearsPaw
I must admit that I was interested a motorized bicycle for a while. But then I noticed that none of them go very fast. 15 mph top speed? I can go that fast sans motor, without too much effort. What's the point? ...
-That's the electrics, no the gasoline-engine setups.

Quote:
...OP: If you're going to do this, go all the way and buy a motorcycle/dirtbike (or a Vespa). Honda motorcyles, brand new, go for under $3k and for under $2k you could buy one of their scooters or dirt bikes. And you can easily find a used motorcycle for $5-600.
Do math much?
If the point is to save money, then buying a motorcycle can be a really silly thing to do.
Most people who buy motorcycles (and even scooters) probably NEVER use them enough to recover their purchase price:
http://www.norcom2000.com/users/dcim...pisode003.html

Quote:
Originally Posted by HiYoSilver
Re original post. Motorized bikes don't make any sense. Either you want a slow ride with other cyclist or you want a vehicle that will keep up with traffic. It's too dangerous being the odd vehicle that drivers don't have experience with and will be more likely to either right hook or left hook you. FYI: a 500cc motorcycle is too small for safe riding with traffic. 750cc is minimum, but I wouldn't be comfortable on anything less than 1000cc.
In most US states, motorized bicycles (and mopeds) are required to be operated the same as bicycles; the chances of getting hit are not any greater.

As for the bit about "needing a 1000cc motorcycle", I'm not going to even comment on that beyond this->
~
Doug5150 is offline   Reply With Quote
Old 01-19-07, 10:44 AM   #16
BearsPaw
Chief Chef
 
BearsPaw's Avatar
 
Join Date: Mar 2006
Location: Philly (Manayunk)
Bikes: 2005 Fuji Touring & 1980s Motobecane Mirage FG conversion
Posts: 226
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Quote:
Originally Posted by Doug5150
Do math much?
That was unnecessary.

Quote:
Originally Posted by Doug5150
If the point is to save money, then buying a motorcycle can be a really silly thing to do.
Most people who buy motorcycles (and even scooters) probably NEVER use them enough to recover their purchase price:
http://www.norcom2000.com/users/dcim...pisode003.html
This website is correct if you already own a car and are thinking of augmenting your transportation with a more fuel efficient vehicle to save money. However, I got the impression that the OP is not a car owner (based on his/her screen name). Buying a motorcycle is certainly not more expensive than a car, and is much cheaper to operate. Therefore, in 0_emissions case, it might not be silly to buy a motorcycle to save money.

A used motor scooter can be had for as much it would cost to outfit a gasoline powered mountain bike, and would probably last longer.
BearsPaw is offline   Reply With Quote
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -6. The time now is 08:17 AM.