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Old 03-15-2011, 07:44 PM
superbob superbob is offline
Motorized Bicycle Newbie
Join Date: Mar 2011
Location: Florida
Posts: 17
Default Re: jim in chicago first build schwinn drifter

Originally Posted by Dave31 View Post
Good luck on your first ride, remember there will be problems along the way but once you get all the bugs worked out it will be worth all the headaches.
Amen, but I have yet to hit the good part. Just finished my first build: 48cc black Skyhawk on a Schwinn from Wal-Mart.

Nothing fancy, but still a nice looking ride. Everywhere I go, I have to allow a little time for people asking questions, I mean everywhere, even if it's just around the block. I had to start a file on my phone for pre-orders, sort of, because I'm not opposed to building bikes for people, but so far all I can tell them is, hit me up in six to eight weeks and I'll tell you whether I feel ok about the engine. So far everything about it says run, don't walk, away from this hyped-up, prison-built ripoff. Sorry guys, but really if it wasn't for the sheer number of knowledgeable, serious, seemingly exacting people, even professional people, out there messing with these Grubbee engines and encouraging other people to do the same, I would think it's all a joke. At present there is no way I would sell one of these with my name on it, or even build one for free and tell someone to go hit the streets with it. Maybe the long-term performance will convince me how dead wrong I am about all the indications.

I could go on and on about missing parts, inoperable parts, misrepresentation, poor or bad (factory) info and poor overall quality, but I'll just stay with the gas tank. You don't have to go far from there. It came hammered and rusted. Seriously, it wasn't packed with any sort of packing material, not even wadded up paper, but the box was in good shape, and no amount of shaking around during shipping can explain the sharp, deep indentations that look for all the world like someone took a hammer claw to my tank at the factory. Other sheet metal parts I was able to beat into, well, nothing like tolerable shape, with a two-by-four and a rubber mallet, but there was nothing I could do for the tank. It's a conversation piece. And then there's the rust and crud, and paint that didn't cover, how demanding is it to completely cover the object you are painting with paint, but all this turns out to be common knowledge, as is the fuel petcock that doesn't flow, and the screen filter that doesn't filter, and the hose clamps and the real filter that I had to buy, and the list goes on, but my current question is this: why do I only get fifty MPG? That's 50, not 150, but I guess I knew what I was getting into when I opened the package and saw the tank, right?

There is no drag on the engine. I can pedal it just fine. No smoke. No mods. Compression seems fine, as does combustion, carburetion (NT carb) and overall performance. I weigh 190, and the bike could be lighter, but I can't see any reason except misinformation that my rig should be getting 1/3 of the claimed MPG. Any suggestions?

And boys, consider cleaning that tank out before you install it. {Amateur advice notice here} I used bb's and a product called Purple Power, which is a metal treatment used to convert rust and penetrate bare metal with corrosion inhibitors in prep for primer. That Kreme or whatever the factory instructions call for has about half the people who use it trying to drive around on fouled carbs, or so I'm told, and it makes sense to me. Why does a rust-free tank full of oil and gas need a coating, to come loose later and get in your good running gear?

Good luck, y'all. Maybe future experience with these Grubbees will convince me they sank all, and I mean all, of their money and effort into the meat of the engine. Those poor prison workers though... not kosher.
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