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#1 |
![]() Join Date: Sep 2012
Location: West Haven CT
Posts: 1,165
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New motorized bicycle project
Hi
Heres the new motorized bike project im going to start work on A Felt MP Cruiser http://www.feltbicycles.com/USA/2013...-3-Spd/MP.aspx With a Grubee engine http://www.gasbike.net/product_51_detailed.html Jackshaft http://www.sickbikeparts.com/catalog/jackshaft.php Disc brakes http://www.nashbar.com/bikes/Product...43_-1___202420 Thats the start, future upgrades will be magneto powered lights and horn Take care and ride safely Yours Hank
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Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be. Douglas MacArthur |
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#2 |
![]() Join Date: Jul 2012
Location: Miami, FL
Posts: 390
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So, you still ride em?
I just started a new project myself, The Walmart Onyx 29" beach cruiser, with a 2 stroke 66cc engine on. This'll be my new cruiser, with a rear sprocket of 32-36T (still deciding). I want to go fast, but not unsafe fast, and I also want to cruise happily at 20-30MPH, not with a screaming engine. But most of all, I want high MPG. Estimated I'd do in the 170's of MPG. But you're way ahead of me, I love the idea of combining the engine with the internal gears! However for now, I don't have the luxury ($$$) to do that... I was also looking for disc brakes, however, I think I'm going for a cheaper alternative. In your case you may be able to mount 2 discs, but in mine, I can only use 1. So no reason to pay extra for that! |
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#3 | |
![]() Join Date: Sep 2012
Location: West Haven CT
Posts: 1,165
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Quote:
If it has 2 wheels and a motor im riding it and most of the fun for me is in the build Sounds like you have a good project as well Heres some good sites http://www.vintageprojects.com/mini-...Bike-plans.pdf http://www.thejakebike.com/ http://kcsbikes.com/ http://www.motoredbikes.com/forum.php? http://motorbicycling.com/index.php? Take care and ride safely dear friend Yours Hank
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Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be. Douglas MacArthur |
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#4 |
![]() Join Date: Apr 2011
Location: NY
Posts: 993
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That will be a really cool project Hank, hope you keep us updated with any and all progress throughout!
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#5 |
![]() Join Date: Jul 2012
Location: Miami, FL
Posts: 390
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I've done an MPG re-calculation,
On Amazon you can find 2 stroke oils for ~$50/gal. At 150MPG, a bike with direct sprocket, and engine kit is more efficient than my TaoTao ATM50 scooter, which gets 99MPG. It came down to, my scoot: 24 miles per dollar Bicycle + kit: 34 miles per dollar @150MPG (I use a 32T rear sprocket for high MPG's), that means it costs me just over $4.41 / tank (1 gal tank). While the scooter would do just over $4 per tank (1 gallon tank) and do 99 miles. For 150 miles, the scoot would use just over $6.1 That means a saving of $1,6 every 150 miles (excluding oilchanges). Including oil changes, on a period of 1500 miles, the bike would cost me just under $45 on fuel. The scooter would cost me $61 on fuel, and additional ~$20 on oil changes, for a total of just under $81. If you're riding 2000 miles a year, include tag renewal, and you're at $200 per year for the scooter. For the bicycle, you're just at $90 per year. Add to that, a bicycle lock every 2 years, and you'll be running at half the price a scooter does! Despite mixing expensive oil in the fuel system, it still comes out cheaper per mile, than a 4 stroke scooter. It does have lower performance, and is less safe/reliable. Initial purchase price: Wallyworld bicycle: $160 Engine kit : $175 Custom 32T Sprocket: $35 2 Stroke oil, 1 gal: $48 (covers 4 gallon for a total of 4.25 gallons of fuel mixture). bicycle lock: $25 Good Saddle: $30 Front disc brake: $35 Total: $460. Scooter: Inintial purchase price + shipping: $800 Tag + registration + tax: $225 3 quarts of engine oil: $18 1 quart of transmission fluid: $ 9 Total: just over $1050 Even the initial purchase price is half of a scooter! The only thing is, most people say, that these kits don't last very long. A good 8k miles tops. |
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#6 | |
![]() Join Date: Sep 2012
Location: West Haven CT
Posts: 1,165
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Quote:
Thats not always the case If you spend the time money and effort you can get them to equal or even exceed a 4 t 50 cc scoot Take care and ride safely dear friend Yours Hank
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Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be. Douglas MacArthur |
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#7 |
![]() Join Date: Mar 2010
Location: Columbia Mo.
Posts: 132
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Love the video Hank,
Now that's a nice setup he has. A bike like that can come in handy when a scooter is not a choice ride (trail ride/park or where you cannot use the engine for some time.) The only problem i foresee is when (not if) a chain derails. ![]() Would there be a way to contain the chain due to a mishap? Like a cover for all the hardware? You get a pantleg caught up in that there ol chain at 30Mph, and that's going to be a bad, really bad BO-BO. (joke)
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Take the day off to ride. -------------------------- ![]() -------------------------- 2009 Jonway 50 4t Last edited by larrball; 04-04-2013 at 06:57 PM. Reason: N/A |
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#8 |
![]() Join Date: Jul 2012
Location: Miami, FL
Posts: 390
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Never had that happen, but then again, all things are possible.
The thing is that a bicycle frame is much more fragile than a scooter frame. It is possible to torque, or break the frame, or wheel parts from the engine power. Most kits are only one gear. The guy is lucky to have several. I wish I had several too! I'm limited to one gear, where I need quite some pedaling to get enough speed to jumpstart the engine; a price I'd probably have to pay for the higher MPG values. Another thing, they mentioned that a lot of these bike engines have bad counter balances in them, causing excessive vibration. some people get rid of the vibration by drilling small holes in them, or soldering onto existing metal to counter the weight difference. Without it some people say the vibrations are a lot... I hope it's going to work out though... Are you thinking of putting your engine on a metal/rubber/wooden block, or mount it straight to the frame? |
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#9 |
![]() Join Date: Mar 2010
Location: Houston area
Posts: 945
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I enjoy the simplicity of the motorized bicycle. You don't have to be Jesse James to maintain it. here's mine. I have added a centrifugal clutch since the pic was taken.
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"Beer never broke my heart" - Luke Combs |
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#10 |
![]() Join Date: Jan 2013
Location: pasadena, tx
Posts: 135
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you could save even more money by getting an used bicycle...
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#11 |
![]() Join Date: Jan 2013
Location: pasadena, tx
Posts: 135
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that felt mp is pricey, but its looks oh so sweet
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#12 |
![]() Join Date: Jul 2011
Location: Connecticut
Posts: 493
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Nothing wrong with a Felt as a base for a motorbike, good choice as they are light and beefy framesets.
Very nice! |
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#13 | |
![]() Join Date: Sep 2012
Location: West Haven CT
Posts: 1,165
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Quote:
Thanks im trying to replicate one of the motorbikes that Ridley makes http://www.ridleymotorcycle.com/motorbike/mp.htm Take care and ride safely dear friend Yours Hank
__________________
Duty, Honor, Country. Those three hallowed words reverently dictate what you ought to be, what you can be, what you will be. Douglas MacArthur |
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#14 |
![]() Join Date: Jul 2012
Location: Miami, FL
Posts: 390
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I almost finished my beach cruiser, just waiting for more parts.
I'll also upload a pic. All I'm having problems with is finding a good braking system. The coaster brake is far from good, reliable or dependable in emergencies! It barely can brake. |
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#15 | |
![]() Join Date: Jul 2011
Location: Connecticut
Posts: 493
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Quote:
Granted, both bikes were stolen, so I was not able to adequately test the new Departure Model D coaster brake. I think installing a good cable or hydraulic disc set is the way to go for motorbike brakes.
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2011 Roketa MC-23-150 4T 150cc 157 qmj 24mm carb w 115 main jet and paper cone air filter Manual petcock w Tygon fuel lines Scrappy Dog Scooters Retro-slash stainless straight-thru exhaust RED spring clutch Adjustable CDI (brand unknown, it's blue and red and works great!) KOSO high performance variator w 12g sliders Gates Powerlink 835-20-30 belt GPS verified 65mph on flats. |
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