How fast can your 80cc really go?

GoldenMotor.com
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iHarvey

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did 22 @ 2/3 throttle using an in town radar and about a 50ft start.

hit 72 mph down a monster hill, clocked it with my buddys civic. lemme say even tho my entire front end and brake system is downhill equip i still got major brake fade. not trying that again.

after break in ill try a nice flat and have my friend chase and clock
 

Goat Herder

Gutter Rider
Apr 28, 2008
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N.M.
Pops can I qoate that or just use that I like it at the bottom of my jibberish!!! Push the envelope and kiss the devil
 

Cabinfever1977

New Member
Mar 23, 2009
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Upstate,NY
im happy cruising at 20-25mph and to go to the store and stuff.
if i wanted to do double that,i wouldnt want to do it on a bicycle.

max speed 28-32mph 26" bike 44t sprocket 48cc engine
 

the willi

New Member
Apr 21, 2009
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west covina,ca
Bigger Better Faster More !!!
i"m just cruizing around about 19 to 20 mph i have 20in rim by 41/2 tire i am about 250 so it moves just fine around town the bike is pretty long too i have 36 tooth on it maybe later getting a smaller one thinking about a 28 or a 27 tooth got any ideals i am always open for any thoughts late the williusflg
 

Newbie

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Apr 24, 2009
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Fountain Hills, Arizona
Well my 50cc 44 tooth RAW engine has got up to 30 on a slight downhill, but it comfortably cruises at around 22-23. I have put over 100 miles on it now and it is just getting better.
 

Nashville Kat

Well-Known Member
Apr 20, 2009
1,503
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Jacksonville, Florida
Remember this size is marketed at 80 cc but actually only 66cc.

I hope to get a speedometer soon- the round kind I had as a kid-

but after years of racing, my own setup- a Micargi multi-speed cruiser with standard kit (44 tooth sprocket) seems to be topping out at about 30, or maybe just a bit faster-

And it seems to be a function of RPM and not power- that is to say limited mostly by the sproket size- the motor has great accelleration, but spins out then-

But alas, I'm also still breaking in and now thinning mixture, after mixing too thick- it wasn't "popping" like it had, but now back normal- or better.

I'm probably going to tinker w/ sprockets a little bit, and maybe get a 36 or 40- There are steep hills here though- the bike bogs down a little going up, but clears them fine-

I'm about 200 lbs.

But, as I wrote in a report on Spooky Tooth, I just want to say that the hub on this Marcargi criser- a multi-speed steel hub, accepts the standard kit sprocket PERFECTLY-
Like it is built with this purpose as an option.
(Don't know about their coaster hub)

The hole diameter is EXACT and there's a stop ridge on the hub that aligns the sprocket and motor perfectly- I don't use a chain tensioner at all- and I only have to use the rubber spacer on the outside. Chrome side is OUT. Don't just follow instructions- LOOK at the thing!

and I might even try a new motor sprocket and regular bicycle chain to lower weight and facilitate changing setups-

A derailleur that works in reverse would be great! Even just two cogs.

I'd also like to try centrifugal clutch- had one on a Rupp mini-bike 40 years ago, and it worked great. I think the greatest danger here is killing the motor and having it lock up while slowing or stopping- It wants to throw you- so ALWAYS clutch in then

Other than that- I find the bars vibrate quite a bit at about thirty, and the cruiser moon bar angle hard to hold- I just took delivery and I'm installing ape hangers for perpendicular grip, and trying to get a suspension shock MTN bike fork to fit (Don't care for cruiser springs)-

because the bike starts hitting any road holes a lot harder as speed goes up-

I already have a 25.4 mm (1 inch) suspension seat post, which helps a lot
 

Nashville Kat

Well-Known Member
Apr 20, 2009
1,503
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Jacksonville, Florida
But then, I agree w/goat herder-

No great need for speed- I wish mine was quieter-- I call it my Novi....

I got the multi-speed for pedal assist, but find I'm not using that much- maybe a freewhhel and single cog would reduce weight-

I would like to disengage the motorcycle chain completely- regular cycling isn't the same- but it rolls pretty good in light gears- less than 20 pounds extra- just to much rolling resistence from motor chain and sprocket for this aged cyclist.
 
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