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  #1  
Old 09-02-2009, 07:32 AM
moosinatrix moosinatrix is offline
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Default RAW 80cc 2 stroke performance upgrades

I just bought a RAW motor inc. 80cc 2 stroke kit and im wondering if i can get more power out of it for cheap. im not looking to do any internal work on it accept for maybe reeds. what i wanna know is how can i get 40-50 MPH outof it without the engine blowing up. main parts im interested in upgrading would be:
-Air filter
-Exhaust (looking for a tunable exhaust kit with expansion chamber)
-Carburetor (something that will give me power without changing the fuel economy too badly unless
it is improving it)
-Sprocket (comes with a 40t want something that will durastically change the top speed not too
worried about the torque loss but you can always help with the pedals but would like to retain
decent torque if not improve it.
-Reed Valves (not too concerned with them but would like to know if there was an upgrade the would
boost power)

If anyone could help my find someone who deals such part or make suggestion as to which parts to go with it would be greatly appreciated!
  #2  
Old 09-02-2009, 08:31 AM
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Bikeguy Joe Bikeguy Joe is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

50 mph without blowing up? Buy a motorcycle.

Seriously.
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  #3  
Old 09-02-2009, 08:39 AM
moosinatrix moosinatrix is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

that defeats the purpose of having the coolest motorized bicycle.
And that does not pertain to the thread...
Now if anyone could tell me where to find power increasing parts for motors such as these please feel free to post.
  #4  
Old 09-02-2009, 08:51 AM
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Pablo Pablo is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

-Air filter - won't help a whole lot, we should have some in stock in a week or two.

-Exhaust (looking for a tunable exhaust kit with expansion chamber) This will make a huge improvement. In stock.

-Carburetor (something that will give me power without changing the fuel economy too badly unless
it is improving it)

On a budget? Not really. Fancy carbs don't help much IMHO. Take your time to dial the stock carb in.

-Sprocket (comes with a 40t want something that will durastically change the top speed not too
worried about the torque loss but you can always help with the pedals but would like to retain
decent torque if not improve it.

I guess. Gearing change won't help if the engine won't pull them.

-Reed Valves (not too concerned with them but would like to know if there was an upgrade the would
boost power)

This could help a lot. Build your own is about the only option right now. Then you could take better advantage of a fancy carb,

Have you ever gone 50 mph on a motorized bike? You haven't if somehow you think it's safe. I say stick with a bike setup the pulls HARD up to 40 mph. A 50 mph bike on the street just won't be ideal, safe or cheap. And probably illegal.
  #5  
Old 09-02-2009, 09:05 AM
moosinatrix moosinatrix is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

i like your pipe that you have i will prolly purchase one after i break in the engine so that i will be able to determine how much of an improvement is made.

And 50-ish was a bit much to ask, i was just wondering if it could be done and if there was a market for such inqueries.


and making the reed valves?? what would i make these out of and how would the valve improve performance??

also are there any alternative fueling methods that could increase output???
  #6  
Old 09-02-2009, 03:47 PM
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foureasy foureasy is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

widening and straightening the ports will make more of a difference than you will get from reeds, and is completely free. there is a definite limit on how much porting you can do without raising the compression a significant amount though.
a dellorto 14/14 SHA (73.00 to your door) will make a big difference on a stock motor, but with extensive porting you will need the 16/16 SHA. a properly tuned carburetor will only use more fuel if the engine can use more air, which (of course) depents on port work, exhaust, etc.
the best thing you can do for these motors is a pipe. but, once again the pipe choice is drastically dependent on several other factors. what rpm do you want to make power, do you want peak hp or a broad powerband, what has been done to the motor, what carb?
for an engine that is so mechanically simple, 2 strokes are quite picky when you want to make the most of your displacement. for $450 i will sell you a complete new motor, including the carb and tuned pipe, that will make you crap your pants. clay 520-300-1700
  #7  
Old 09-02-2009, 05:58 PM
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Venice Motor Bikes Venice Motor Bikes is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

Quote:
Originally Posted by moosinatrix View Post
that defeats the purpose of having the coolest motorized bicycle.
And that does not pertain to the thread...
Now if anyone could tell me where to find power increasing parts for motors such as these please feel free to post.
Don't be mean to Joe... He's the homie! (& he knows a lot more about these bikes than you do...)
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  #8  
Old 09-02-2009, 07:00 PM
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Kevlarr Kevlarr is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

Quote:
Originally Posted by foureasy View Post
for $450 i will sell you a complete new motor, including the carb and tuned pipe, that will make you crap your pants. clay 520-300-1700

Does that include a pair of complimentary pair of

  #9  
Old 09-02-2009, 08:22 PM
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Salty Gator Salty Gator is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

To be honest...I'm not sure a bicycle can withstand going that fast......they're bicycles....not motorcycles.....not to mention....the brakes they have....even disc brakes....aint going to stop you in a panic.....and as far as MPG ?..100 MPG isn't good enough ?.....just my two cents...if you can find a bike that will withstand 50 MPH consistently let me know !
  #10  
Old 09-03-2009, 10:27 AM
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BarelyAWake BarelyAWake is offline
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Default Re: RAW 80cc 2 stroke performance upgrades

Quote:
Originally Posted by Bikeguy Joe View Post
50 mph without blowing up? Buy a motorcycle.

Seriously.
+1 joe

In all honesty, if that's what ya want - it's not gonna be done on the cheap & easy. Were that the case - we'd all be on 'em.

But really, 25-30mph on a bike is a wonderful thing and that's stock depending on bike, motor, and weight. Anything beyond that is earned through time, effort, and defo some cashflow.

It seems there's this wall at about 35mph that no matter the effort and expenditure, these lil china motors jus can give no more. A lack of torque seems to be the culprit and even gears can only wheedle around that so much.

I'm no expert obv - but I have taken the time and effort to research the subject, this forum in particular. Joe defo knows wassup and if he just snorts and walks away - bet there's a reason why

Last edited by BarelyAWake; 09-03-2009 at 10:32 AM.
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