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  #11  
Old 03-29-2013, 04:50 AM
ProDigit ProDigit is offline
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Default Re: direct drive an 18T fixie sprocket?

But a 30T is still about twice the size of an 18T.

I'm not too fat, probably could do with a 32T, or 30T like you, but I don't want to end up on a windy day having to pedal home because the engine can't overcome the wind.
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  #12  
Old 03-29-2013, 12:16 PM
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runnermike runnermike is offline
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Default Re: direct drive an 18T fixie sprocket?

I have a heavily modified 66cc from Arrow Motorized Cycles equipped with a 39T rear sprocket....the thing screams! Can reach 45 no problem with throttle left. I'm scrared to go any faster..lol!
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  #13  
Old 07-11-2016, 03:37 PM
Risonmor Risonmor is offline
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Default Re: direct drive an 18T fixie sprocket?

I have just finished my flying horse 66cc motor and put it on my Redlines 1st year fixed gear addition. No tensioner 10/18 motor side 46/18 pedal side. I start it up at 15 mph and assist it to 20 after that it rides smooth at 30 mph no rattling, low rpm's and plenty of power if you needed/wanted to get up and go. Not too economical for in town but perfect for what I am looking for or if you live in the country/flatland a faster way to get into town 30 miles away long distance riding. Stick with the 36t if you plan on staying in town by the time you get it up to speed it is time to stop because here come the next stop sign haha/lol! Have fun, never post thought I would since I couldn't find someone who had tried this already. Might help the next guy that lives a ways out of town.
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  #14  
Old 07-11-2016, 11:11 PM
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maniac57 maniac57 is offline
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Default Re: direct drive an 18T fixie sprocket?

I'm not buying it. No way 18 tooth is useable without considerable pedal assist
Plus it would be truly brutal on the engine.
It would have the power of a slot car held against the tire IE: barely able to overcome drag & friction
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  #15  
Old 07-21-2016, 12:30 AM
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LandSpeedRecord LandSpeedRecord is offline
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Default Re: direct drive an 18T fixie sprocket?

I tried it for kicks a long time ago. Had to pedal assist like mad and slip the clutch bad up too probably 25 then it would pull up too maybe 40 then I would hit a traffic light. Made it to work and back and changed the clutch and gearing that night lol. We consistently hit 43 to 45 now on ported speedy66.com and Ignite 66cc kits on regular beach cruisers with straight bars and free wheel conversions. Way more fun and way way better acceleration.
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  #16  
Old 07-23-2016, 02:20 PM
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bairdco bairdco is offline
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Default Re: direct drive an 18T fixie sprocket?

Quote:
Originally Posted by Risonmor View Post
I have just finished my flying horse 66cc motor and put it on my Redlines 1st year fixed gear addition. No tensioner 10/18 motor side 46/18 pedal side. I start it up at 15 mph and assist it to 20....
Your experience matches my 3year old prediction.

Pedaling a bike up to 15-20mph after every stop sign or traffic slowdown sounds like a lot of work to go 30mph, when the stock kit will do that with a five foot pedal start.

But, whatevs. I'm not judging.
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  #17  
Old 12-02-2016, 10:05 PM
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ftw357 ftw357 is offline
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Thumbs up Re: direct drive an 18T fixie sprocket?

It can be done spb jacke shaaft 4 chane rings use a mouton bicke front derailleur the outer chane ring will be driven by the motor the 3 remaining will drive the weel I hit 40 on number 2 chane ring with 79cc prettier 4 strocke with governor hooked up good luck bye a radar detection device
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  #18  
Old 12-03-2016, 03:40 AM
TheNecromancer13 TheNecromancer13 is offline
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Default Re: direct drive an 18T fixie sprocket?

[QUOTE=ftw357;647761]It can be done spb jacke shaaft 4 chane rings use a mouton bicke front derailleur the outer chane ring will be driven by the motor the 3 remaining will drive the weel I hit 40 on number 2 chane ring with 79cc prettier 4 strocke with governor hooked up good luck bye a radar detection device [/QUOTE
I can barely understand what you're saying, do some spellchecking.
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