My 63 Schwinn 97cc motorized bicycle build

[D4NK]

Awesome build!!!

Sorry if this is a newbie question but where did you get the motor? Was it a kit?

 

[Dboy9887]

It looks sweet, but how does it ride? Could you possibly post a video?

 

[Dowie Soetenga]

Awesome build!!!

Sorry if this is a newbie question but where did you get the motor? Was it a kit?

Thanks for the positive feedback. No kit here. This thing is built from sweat and tears. The motor is a Honda / Lifan 97cc 2.5hp four stroke, flathead, sidevalve. The clutch is a Hillard #35 12T. The motor mounts and related are hand made. The rest of the parts are 90% vintage Schwinn. It rides great. I'm going to swap out a sprocket to give her a little more low end power. Right now the top speed is around 33-35mph. I'm going to scale it back a little. I'll get some video footage on youtube next weekend if I can.

 

[Dboy9887]

Wow 30mph? thats awesome!!

 

[masterpoop63]

wheres my welder? i am now officially gona build a 5 horse bike like this 8) once i get my welder working and some steel then ima buy a cranbrook so i dont feel bad about chopping up a jaguar :mrgreen:

 

[bikebum1975]

That is one sweet ride man. Where did you pick the motor up from?

 

[Dowie Soetenga]

Here are some pictures from last weekend. I think she's all dialed in. I changed the jack shaft output sprocket from 10T to 9T. I've also added a modern rear V brake, and a chain tensioner.

 

[Dowie Soetenga]

That is one sweet ride man. Where did you pick the motor up from?

The motor is a 2.5HP 97cc four stroke flathead. I bought it on ebay for $90.00. It's a Honda Lifan. I wanted a vintage Briggs, but they were too expensive for my budget.

 

[chainmaker]

Nice looking bike..did you fab those rear brake bosses, or where did You get them those are sweet.

Cheers

 

[dash]

man sweet build!! how did you figure out the gear reduction ,a four stoke engine would be cool on my bike not to mention way more reliable and sound better!

 

[cobrafreak]

Very nice. Good lines on that bike.

 

[pepper]

A red tank would really set off your bike

 

[dash]

is your sprocket mounted to a free wheel ? how did you pull that off?

 

[Dowie Soetenga]

is your sprocket mounted to a free wheel ? how did you pull that off?

The right side is pedal assist with a free wheel.

The left side is motor assist with a free wheel.

The gearing is all math. My blueprint drawing calls out the sprockets and ratios. I ended up making my jackshaft output sprocket 9T vs 10T to gear the bike just a little lower. Perfect.

The speed is now 29.4mph at 4,200 rpm.

 

[diceman]

nice job ...yourthe only other person besides me that i have seen use that motor .
i did a jessie james chopper bike with the same engine ( sounds good ) .

 

[chainmaker]

Nice looking bike..did you fab those rear brake bosses, or where did You get them those are sweet.

Cheers

About those rear brake bosses?????

 

[Dowie Soetenga]

Nice looking bike..did you fab those rear brake bosses, or where did You get them those are sweet.

Cheers

About those rear brake bosses?????

Yes. I did make the rear brake bosses. Here is a tread I started showing how to make them.
http://www.ratrodbikes.com/forum/viewtopic.php?f=1&t=33168

 

[Dowie Soetenga]

Just put on my tank decals. Next is custom exhaust, heat shield / guard.

 

[cobrafreak]

I like it. Can you take a picture of the right hand side of the bike please?

 

[Dowie Soetenga]

I like it. Can you take a picture of the right hand side of the bike please?

Here are some pictures of the right side of the bike.