Anyone have any tips on a tandem build?

ADDICTED MOTORBICYCLES · #1 (**permalink**) 10-21-2009, 07:59 AM

Hello, I'm looking to build a tandem motorbike, so my girlfriend and I can go to the rally together.

You can view it here...

Tandem Bikes - 2 Wheel Bikes - Beach Cruisers, Mountain Bikes, Tandem Bikes, Children's Bikes

Of the four on the page, which will work the best? Should I go two stroke or four? will a 49cc two stroke hold up to the weight of the big bike, and two riders? Or should I go with a 70cc? I'd imagine a 4 stroke would be best, so I could just pull into gas stations. I'm not trying to spend too much money, so if anyone has a cheaper tandem bike then the ones I've posted, I'd love to know where, and if anyone has any tips, advice, personal knowledge, or ANYTHING about tandem bicycles, and putting an engine on one, please help.

Thank you so much, later.

(should I get better air filter? NOS? Expansion chamber?)
***Link to NOS Kit for your bike!!!!***
NITROUS OXIDE KITS FOR SCOOTER / POCKET BIKES

Charged-Reacter · #2 (**permalink**) 10-21-2009, 01:51 PM

Did you see the Worksman TT TRI-TANDEM Trike. It has the looks
of an aggressive tandem but the price is way up there for it.

marts1 · #3 (**permalink**) 10-21-2009, 02:34 PM

I have an idea that I'll probably start work on this winter of a two seater like you've never seen before.

Venice Motor Bikes · #4 (**permalink**) 10-22-2009, 06:48 PM

The problem with most tandem bikes is that they usually have crazy frames that 'in frame' engines won't fit into.
Also you will have to use super extra long chain, cables & extra chain tensioners!

You should seriously look into rear rack mount 80cc engines for a project like that.

Or, you can do what I did, & build her a bike of her own!! (& make her pay for it!)

ADDICTED MOTORBICYCLES · #5 (**permalink**) 10-22-2009, 08:35 PM

I was thinking of the that'sdax 48cc titan 4 stroke, but now I've learned that spooky tooth cycles has a new four stroke kit, the 4G. I will likely go with a rear mount 4 stroke, but I want to stay under 50cc. To abide by the laws. Any tips on four strokes? I've never used one. Only two stroke 70ccs under my belt.

bandito · #6 (**permalink**) 10-22-2009, 09:08 PM

ADD I went to spookys site and didnt see a 4 stroke kit, do you have a link to it? Thanks. What motor, price, is it chain driven? Pics too.

ADDICTED MOTORBICYCLES · #7 (**permalink**) 10-22-2009, 09:10 PM

It isn't posted for sale yet. They have just recieved it, and as far as I know, I'm the first to gain access to it. I'm sure it will be released for sale before my rally, so just keep checking spooky tooth cycles, they will post for sale soon I'm sure.

bandito · #8 (**permalink**) 10-26-2009, 05:06 AM

It s funny the 2 bikes on the left seem the same yet $10 difference, bottom left 1 has a dearailuer type tensioner top left doesnt. Same applies to the 2 bikes on the right except the prices are the same. As far as looks the 2 on the left have my vote. where would you mount an inframe motor on a tandem? In the middle triangle?......bikes on the left seem you have a choice of 2 triangles to mount in, bikes on the right it seems youd only have 1 choice and that location doesnt seem ideal.

MaxPower · #9 (**permalink**) 10-28-2009, 05:03 AM

I'm trying a 80cc 2 cycle on my tandem project. It's a "sun retro cruiser" and they are no longer made. I tryed very hard to find this one. I bought it off of some guy on craigslist for $250. I think were $800 new. I'm running the motor chain through the bottom bracket of the rear passenger. It's been a pain. I'm not planning to have a second passenger, sort of a stretch lowrider looking thing. If I were to do it again I would of just bought a shift kit from sick bike parts. Once this engine dies (any I have a lot of miles on it) I think I'll put a 4 cycle on it.