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Old 03-02-09, 04:49 AM   #1
Windecopower
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33cc Chain Saw Powered Folding Raleigh

Hi I am trying to convert a folding Raleigh compact, to 2 stroke chain saw power!, the Mc Culloch engine sits neatly on the pannier rack and I have made brackets so I can bolt it down, the centrifugal clutch bell housing will work well as the transfer of power but I need a method of attaching a small bicycle sprocket to the existing clutch bell housing has anyone got any Ideas?
Notice I didn't say suggestions!!
Because I'm sure the purists amongst you will say don't be a lazy beggar and why petrol power??

Regards Stuart living in Spain and Loving it!
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Old 03-02-09, 07:04 AM   #2
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No idea, and why use petrol power and all that.

But one thing you might look at is the size of sprocket you'll need. In particular, some of the motorized set-ups used a giant rear sprocket to get the speed of the motor matched to the speed of the wheel. You might check into that, or you may wind up being geared 8 times too high.
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Old 03-03-09, 01:55 AM   #3
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Re why use petrol

I suppose its the weight factor and the lack of range on batteries plus the charging time, with petrol the power to weight ratio is better especially with small 2 strokes and the top up is easy and quick, I have a lrage cog lined up for the back wheel and am thinking of one of those pit bike sprockets for the motor so I may not be geared too high, or I may get up to 50mph you never know!!
Stuart
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Old 03-03-09, 09:06 AM   #4
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You might try googling "chainsaw engines on bicycles". I have in the past found tons of information on the subject there.
I haven't done this but here are some things I found out when researching it.
1.Chainsaw engines are high rpm some running well above 10,000 rpm so you'll probably need at least a two stage gear down.
2. Chainsaw clutches typically lock up from 1300 to 2300 rpm and they must lock up to stay cool. If they don't lock up they will destroy themselves pretty quick.
Try instructables.com also. Someone has done this I'm sure.
Good luck and have fun. Just building it will be fun and If it works even more fun.
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Old 03-03-09, 07:46 PM   #5
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Weld it.

But really, don't be a lazy beggar and why petrol power??

Seriously... weld it. If the weld breaks get a smaller motor.

But, doesn't the clutch system already drive the cutting chain of the saw? If that is the same 1/2" spacing, then maybe it can fit bike chain.

:)ensen.
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Old 03-04-09, 06:45 AM   #6
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Sprocket

Hi Jensen

Yes it does have a sprocket already fixed to the clutch bell housing but it is a solid cog the teeth drop in from the chainsaw blade which is different from a bicycle chain, its too wide to fit into a cycle chain slot

Best regards Stuart
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Old 03-04-09, 07:41 AM   #7
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If you look around, especially over in Single Speed and Fixed Gear, you'll find reference to some rear cogs that have a 6-hole mounting pattern that matches up with disk brake specs. Attaching it to an existing thing should be easier than trying to deal with something that threads onto a hub like a usual fixed gear cog.
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Old 03-04-09, 10:41 AM   #8
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Quote:
Originally Posted by Windecopower View Post
Hi I am trying to convert a folding Raleigh compact, to 2 stroke chain saw power!, the Mc Culloch engine sits neatly on the pannier rack and I have made brackets so I can bolt it down, the centrifugal clutch bell housing will work well as the transfer of power but I need a method of attaching a small bicycle sprocket to the existing clutch bell housing has anyone got any Ideas?
Notice I didn't say suggestions!!
Because I'm sure the purists amongst you will say don't be a lazy beggar and why petrol power??

Regards Stuart living in Spain and Loving it!
Try Staton :

http://www.staton-inc.com/

http://www.staton-inc.com/Results1.asp?Category=50

Scroll down and click the menu items on the left side of the screen.
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Old 03-30-09, 07:24 PM   #9
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Its been done.
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Old 03-30-09, 07:30 PM   #10
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2 stroke engines pollute more than cars, are inefficient and noisy as hell and totally defeat the purpose of a bike.
i hope i never encounter you on any road on this earth, and you would be better off just buying a car, or at least a 4 stroke scooter.
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Old 03-31-09, 10:37 AM   #11
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Purpose of a bike

Hi Chiapas

I always thought the idea of a bike was to get from A to B faster than walking, so what is wrong with some power assistance? I suppose you are against air travel as well!

As for battery assisted bikes you don't even want to know what making batteries does to the environment.

Anyway Cows polute the atmosphere more than 2 strokes, may bee I could run an engine on methane!!

Regards Stuart
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Old 03-31-09, 02:21 PM   #12
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What an awesome idea. Must be obnoxiously loud though.
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Old 04-02-09, 11:40 PM   #13
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as i said, buy a scooter if your purpose is to get from a to b.
I agree it is a good idea to stop eating beef too, and deff. avoid air travel unless absolutely essential.
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Old 04-03-09, 10:12 AM   #14
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Quote:
Originally Posted by chiapasfixed View Post
2 stroke engines pollute more than cars, are inefficient and noisy as hell and totally defeat the purpose of a bike.
ftfy
Quote:
Originally Posted by chiapasfixed View Post
2 stroke engines pollute more than cars, are inefficient and noisy as hell and totally defeat chiapasfixed's purpose of a bike.
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Old 04-04-09, 09:10 AM   #15
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be resonable

give this a shot. cant hurt. i used to do this. then i found out i like just pedaling better. and it's quieter, and cheaper to pedal. but hey, its your world, not mine http://www.motoredbikes.com/index.php
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Old 04-04-09, 10:14 AM   #16
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33cc chainsaw bike

Hi Chiapa

So I can't use a chain saw, I can't fly, i can't drive a car, or a 2 stroke scooter, I Have to become a vegetarian and live of vitamin substitutes to stop the planet dieing from metyhane gas, Can I still breath in your world Chiapa is that allowed?
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Old 04-10-09, 03:10 PM   #17
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Have you thought about changing the gear on the clutch to a wheel? Driving the rear wheel directly will make life much easier.No chains or belts to mess with and you only have to change the wheel size on the engine to correct any ratio problems.If you have a problem with it,you just lift it up and ride home.You can still mount it to your rack.
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Old 04-11-09, 12:12 PM   #18
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Wheel Drive

What a great idea!! no chains gear ratio with a small drive wheel will probable be just right!! what a clever person you are thank you!! Stuart
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Old 04-11-09, 12:17 PM   #19
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Knees

Pedalling is all very well and good till you get arthritis in your knees!

Now you know why i need power assistance!

Or is Chiapa going to deny me being able to get about?

May be he thinks all non cyclists should be in a home or something!!

Or better still put down because they can't cycle anymore!!
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Old 04-12-09, 09:35 AM   #20
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33cc. That's it? Time to man up and atleast get a 80cc chainsaw. I saw someone stick a 750cc motorcycle motor into a Vespa.

Being I use to work at a machine shop I have found the best way to try out stuff like that without a Masters in Mechanical Engineering is to just weld it and try it. If it fails cut it and weld it again.

Or check the advertisements...
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Old 04-13-09, 10:07 AM   #21
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Quote:
Originally Posted by ChiapasFixed View Post
2 stroke engines pollute more than cars, are inefficient and noisy as hell and totally defeat the purpose of a bike.
i hope i never encounter you on any road on this earth, and you would be better off just buying a car, or at least a 4 stroke scooter.
And this message brought to you by means of many computers all running on electricity that was made by

burning coal!!!
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Old 04-13-09, 06:13 PM   #22
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here at CDU, our servers are run by wind and solar power actually...
I hold firm to my opposition to two stroke engines, I believe they should be banned (they actually are banned in several US statessuch as California and some European cities such as Paris).
If Windeco has arthritis and needs assistance, why not look into the highly efficient electric-assist bikes out there? If what you want is to build something yourself, there are kits to retrofit your bike too. This is the best in my opinion: http://www.greenspeed.us/bionx_motor_bike_kit.htm
You would be doing the world, your community and yourself a favor.
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Old 04-13-09, 07:18 PM   #23
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California is just a messed up state and shouldn't be referenced for anything. Sorry, but any state that allows naked yoga but no guns to defend yourself with needs to be kicked in the crotch.

By the way your windmills/bird killers are probably maintained by men who use diesel trucks. The factories that built your windmills are most likely coal or patroleum powered. They were transported there via diesel trucks. The material that makes up the windmill had to be mined or produced which often leaves a lot of wasteful byproducts. I'm sure the list just goes on and on and on and on and on and on and on and on...

Also your phone lines are maintained 5-6days a week for 8hour days with the trucks running 7hours of that day to operate the boom by these trucks...


Fixing your guilt does not fix the enviroment. I'm also guessing that a 33cc chainsaw driven bicycle will help the enviroment 10x better than buying a Toyota Prius which destroys the land from where their battery is produced so bad that NASA uses it to test their Mars rovers.
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Old 04-14-09, 01:28 AM   #24
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I suggest a belt drive like Trek is doing with their commuter line. Screw the chain-driven sprockets.
good Luck.
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Old 04-14-09, 01:50 AM   #25
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2 Stroke engines

Here in BCN province AVC we have all our electricity provided by a 1 megawatt solar farm our back up comes from 30 Windmills that kill birds of all sorts on a regular basis, the only Bulls we have around here are bred for bull fighting, all the pigs chickens and rabbits in the region are bred in factory farms, our beef comes from Argentina so has travelled 1000s of miles to get here, even the vegetables come from Africa Venezuela and timbuctoo for all I know but we eat from our own veg plot have our own chickens and are thinking of breeding pigs Our heating is powered from Olive Carob and almond prunings which renew themselves every year incidentally pruned by chain saw 2 stroke of course I suppose you would have me prune 200 trees with a bow saw? our water heating is from solar power our well pump is solar driven so in short I don't think we can do much more to help the environment so I will convert my folding bicycle to 2 stroke power as I have earn't my eco credentials so stick that in your pipe and smoke it, ohhhh sorry I forgot you don't smoke either, and probably don't drink except water of course
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