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Motorized Bicycle General Discussion All topics regarding bicycles with engines.

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  #751  
Old 05-01-2013, 08:03 PM
JTona23 JTona23 is offline
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Join Date: Feb 2013
Location: Australia
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Hi, just wondering how port matching the inlet and exhaust ports of a 2-stroke will further increase engine efficiency
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  #752  
Old 05-01-2013, 08:54 PM
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maniac57 maniac57 is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

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Originally Posted by JTona23 View Post
Hi, just wondering how port matching the inlet and exhaust ports of a 2-stroke will further increase engine efficiency
Don't expect huge gains, but well worth doing. Every little bit helps...
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  #753  
Old 05-04-2013, 02:24 AM
5-7HEAVEN 5-7HEAVEN is offline
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Join Date: Aug 2008
Posts: 1,912
Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Here's a tip for riders who need to use a magnetic card key to access a garage gate/arm. For years, I've carried my access card in my wallet. Then I'd had to stop @ the entrance and dig out my wallet, scan it, then put my wallet away before riding up the ramp. Since I always keep my wallet in my front left pocket, I simply get close to the scanner and lift my left leg slightly. This activates the gate, without having to fumble around for my access card.

I'm so happy!
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  #754  
Old 05-04-2013, 02:47 AM
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BarelyAWake BarelyAWake is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

My bad 5-7HEAVEN, I read that wrong & thought this at first;



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  #755  
Old 05-04-2013, 11:18 AM
Vin Vin is offline
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Join Date: May 2013
Location: Washington DC
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

I have a question for the group...I've been riding my motorized fixie around my college campus...maybe put 10 miles on it. I noticed this morning that the rim on the rear wheel is pretty dirty and covered in spots of oil. First thing I think is to clean it off and see how much accumulates over the course of my trip to the cafeteria. A fair amount caked up. I realize that it may be running too rich, but what about the fact that oil is getting on the rubber of my rear tire? Does anyone have any advice on this for me? Thanks

-Vin
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  #756  
Old 05-04-2013, 01:35 PM
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SuperDave SuperDave is offline
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Join Date: Sep 2011
Location: Panama City Beach, Fl. USA
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

If you look, I'll bet your exhaust tip is greasy too. Exhaust blow out of unburnt 2 cycle oil. Happens to me until the cat converter gets warmed up, it can take 10 minutes or more of riding to heat up enough to burn all the fuel/oil unburnt by the motor.

If it's a relatively fresh motor & you're still breaking it in with double oil as recommended, this is normal, just carry a rag with you. If not, then you may be running too rich an oil mix or the carb itself is jetted too rich (try dropping the carb needle a notch, see if it helps).
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  #757  
Old 05-04-2013, 02:29 PM
5-7HEAVEN 5-7HEAVEN is offline
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

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Originally Posted by BarelyAWake View Post
My bad 5-7HEAVEN, I read that wrong & thought this at first;



LOL, I thought the same as I typed "lifted my leg".
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  #758  
Old 05-06-2013, 01:23 AM
JTona23 JTona23 is offline
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Join Date: Feb 2013
Location: Australia
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Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Hi, just wondering how port matching the inlet and exhaust ports of a 2-stroke will further increase engine efficiency
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  #759  
Old 05-06-2013, 02:38 AM
5-7HEAVEN 5-7HEAVEN is offline
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Join Date: Aug 2008
Posts: 1,912
Default Re: Motorized Bicycle Take a Tip...Leave a Tip

Quote:
Originally Posted by Vin View Post
I have a question for the group...I've been riding my motorized fixie around my college campus...maybe put 10 miles on it. I noticed this morning that the rim on the rear wheel is pretty dirty and covered in spots of oil. First thing I think is to clean it off and see how much accumulates over the course of my trip to the cafeteria. A fair amount caked up. I realize that it may be running too rich, but what about the fact that oil is getting on the rubber of my rear tire? Does anyone have any advice on this for me? Thanks

-Vin
I've used exhaust hose fromwww.davesmotors.com to extend my exhaust past my wheel. You can also point the hose away from the wheel.

I also get less oil splatter, now that I use 100:1 mix of fuel and Opti-2.
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  #760  
Old 05-07-2013, 12:18 PM
buck1234 buck1234 is offline
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Join Date: Apr 2013
Location: Redwood City Ca
Posts: 15
Thumbs up Re: Motorized Bicycle Take a Tip...Leave a Tip

I came across a handlebar grip removal replacement trick. Windex to get it off and hairspray in the grip to keep it on. Suppose once on, laquer thinner to pull it off again.

Off topic "Something that really works" Like most folks I've been peeling a banana from the top. Gently pinch the bottom of the fruit and no more tearing,cutting or tearing the top with your teeth.

Buck aka buck1234
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