The random tandem

[Wevil Kenevil]

I've recently decided to use a Schwinn tandem for my next build. Is there anything I should know before I start my build?

Weak spots in the frame etc etc... If you take a look at my pictures this is kind of what I plan on doing.

Sorry for the lame graphics but my phone doesn't have a good paint app on it but you get the idea.

The third picture is what I'm shooting for it to look like or thereabouts.

I'm using a 100cc zeda that's been built with an f2 thruster and velocity stack reeded carb accessory coil for power,, stand alone coil and CDI and a few other little trinkets.

Anybody have any input I would appreciate it.

 

[Sidewinder Jerry]

So you aren't intending to ride a passenger?

 

[fasteddy]

I've been looking around the forum and haven't found any links to a tandem frame that was altered. My suggestion would be to see if you can find a lugged frame your problems will be less likely to happen. Other than that I'm going to guess that it will be up to you to brace whatever you think may be a weak area. I'll look around some more but tandems were few and far between.

Steve.

 

[Wevil Kenevil]

So you aren't intending to ride a passenger?

No it's going to look like a drag bike.

 

[Wevil Kenevil]

I've been looking around the forum and haven't found any links to a tandem frame that was altered. My suggestion would be to see if you can find a lugged frame your problems will be less likely to happen. Other than that I'm going to guess that it will be up to you to brace whatever you think may be a weak area. I'll look around some more but tandems were few and far between.

Steve.

Thanks Freddy! You rock bro.

I found a couple videos on YouTube about people that have turned them into bicycles for one but nothing as far as being altered for "motor-fication" purposes. I will keep looking too and let you know what I find.

 

[fasteddy]

I looked at the other forum and there wasn't anything there either. That's the personal Hades of being a trend setter. It's all on you.

Steve.

 

[Oldbiscuit]

With the pedals behind the seat, you’re going to find it hard to pedal from a stop. Cool concept though, maybe with a bigger 4stroke and centrifugal clutch. But i’de move the seat back to just in front of the rear wheel then.

 

[curtisfox]

Schwinn frame will be heavier that a regular frame, like said gussets and bracing, Be KOOL! .........Curt

 

[Wevil Kenevil]

I looked at the other forum and there wasn't anything there either. That's the personal Hades of being a trend setter. It's all on you.

Steve.

Whoop whoop lol

 

[Wevil Kenevil]

With the pedals behind the seat, you’re going to find it hard to pedal from a stop. Cool concept though, maybe with a bigger 4stroke and centrifugal clutch. But i’de move the seat back to just in front of the rear wheel then.

Yes I am going to deff move the seat back.

 

[Wevil Kenevil]

It's evolving. I'm going to put thin gage aluminium panels in the lower to bays. Not sure of a colour scheme yet black and red maybe with spiderwebs in the corners where the frame meets together.

 

[Wevil Kenevil]

Schwinn frame will be heavier that a regular frame, like said gussets and bracing, Be KOOL! .........Curt

Yes yes Curt. I'm taking this into account sir, thank you!

 

[Wevil Kenevil]

I've decided to go with the front crank set pedal position and run the chain like it normally is over both ring gears... But I nibbed the back pedal arms off and it looks kinda cool. Pics later.

 

[2stroker412]

What are you using to steer?

 

[Wevil Kenevil]

What are you using to steer?

A custom set of ape hangers... Or some BMX free style that I can't locate at the moment.

 

[Wevil Kenevil]

Steve by lugged you mean a frame that has gussets "built into" the frame that give it that "fancy" kinda look right?

Like old school Cannondale fancy style...

 

[Wevil Kenevil]

T.Y.sir

 

[curtisfox]

Lugged bike fram constrution - Google Search

 

[Wevil Kenevil]

New idea, a friend has a front hub e bike motor he is willing to give up so it may be electric in the front and gas in back. I will use the e motor as pedal assist to help elevate the strain of the extra weight of the tandem frame.

 

[Wevil Kenevil]

Billet h.c.head, new f2 thruster with immaculate welds, yd 100 lower case new bearings seals and gaskets, the stand alone CDI and spark coil I got off eBay from a guy who builds them "custom" for different models of c.g. engines.

I cut and welded the frame to accommodate the larger motor.

When it's all stacked together the LD is 1/3 bigger in size... So much so that I'm sure to get pulled over by the "river rangers" to inspect it...

Luckily as big as it is, it's still under the limit.
I was watching a vid that said the LD is comparable to an actual 82 cc where as the phantom 85 is actually that, 85 cc .

So if they decide to push the point I am under what the biggest one can be by 3 cc.

I'm gonna go eat and snap a couple pics.