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| DIY Home Built Motorized Bicycle (non kit) Post all about your home built rides here. Weedwacker motors, lawn mower engines ect. This area is for non kit builds |
need guess, educated guess or swag
Discussion at Motorized Bicycle Engine Kit Forum in the DIY Home Built Motorized Bicycle (non kit) forum. okay I got a gas tank off a bolens engine (same as ryobi), my chainsaw bike get about five miles ...  | 
08-15-2008, 12:01 PM
|  | minor bike philosopher | | Join Date: Jan 2008 Location: north carolina
Posts: 5,428
| |  need guess, educated guess or swag
okay I got a gas tank off a bolens engine (same as ryobi), my chainsaw bike get about five miles from that tank of gas. I am trying to figure out what size the tank is cause it seems like terrible gasoline milage. Some of it may be leaking out around the return hose, but I doubt that much is. |
08-15-2008, 12:06 PM
|  | Motorized Bicycle Elite Member | | Join Date: Jun 2008 Location: Longmont, CO
Posts: 1,597
| | Re: need guess, educated guess or swag
Pop the tank off and close up the holes. Then start adding a cup of water at a time and see how much it holds. |
08-15-2008, 12:11 PM
| | minor bike philosopher | | Join Date: Jan 2008 Location: north carolina
Posts: 5,428
| | Re: need guess, educated guess or swag
its on the bike and full of gas. I was hoping someone would know so I would have to do that. |
08-15-2008, 01:04 PM
|  | Moderator | | Join Date: Jan 2008 Location: Pampa, Texas
Posts: 1,715
| | Re: need guess, educated guess or swag
Measure the inside dimensions and get the cubic inches and divide by 144................ 
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08-15-2008, 01:07 PM
| | Motorized Bicycle Elite Member | | Join Date: Jun 2008 Location: Longmont, CO
Posts: 1,597
| | Re: need guess, educated guess or swag
If it's full of gas, pop the gas line off and drain it into a container and measure how much gas is there. Then just pour it back in  |
08-15-2008, 01:31 PM
| | Motorized Bicycle Senior Member | | Join Date: Aug 2008
Posts: 55
| | Re: need guess, educated guess or swag
I have a ryobi 31cc gas tank that I pulgged all the holes in. after reading this thread I just went outside and made a quick measurement of how much gas it holds.
The tank holds 1 1/4 cups of fuel if just pouring it in. You can get an extra 1/2 ounce if you shake alll the air out of the tank.
There you go.
However, I would suggest making or buying a bigger tank. |
08-15-2008, 01:31 PM
| | minor bike philosopher | | Join Date: Jan 2008 Location: north carolina
Posts: 5,428
| | Re: need guess, educated guess or swag
Well I learned two things when I went out to the bike.
One it was empty when I filled it and I filled it from my mixing bottle. Estimated amount of gasoline is 12 oz which seems pretty close.
Two there is a leak in the tank. I have five new plastic canteens coming so I'm just going to ride the mtb25 till they arrive. I just rode the mtb25 and it seems to rev higher and has a better friction wheels so it does just as well as the chainsaw33.
I emailed the man who is donating a Weed Whacker for the brochure build and I pick it up tomorrow. I should be working on the build for a couple of days. Then I guess I will be looking for a new hobby again. It's like the antique cameras, once I knew how to do it, I lost interest. In this case I at least get to ride them to the store for my effort.
At this particular moment the little mtb25 is my favorite. After the brochure is done, I might have a motorized bike yard sale. | | Thread Tools | | | | Display Modes |  Linear Mode | 
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