The Board Track Racer, Briggs powered---Video

Shop deals on ebay
Advertise with us
BOXKARS
Bike Wall
Rat Rod Bikes Bicycle Forum

Help Support Rat Rod Bikes Bicycle Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Re: The boardtrack- bobber-bicycle looking thing...

Sorry for the reply on this post. I think Î'll get a centrifugal clutch for free on monday :) I´ll keep you guys updated. Thanks so much for all the help Beau and Motopecane.
Meanwhile Beau, when will we see your machine runnin'?
 
Re: The boardtrack- bobber-bicycle looking thing...

Here are a couple shots of the tank. I need to sand down the welds/brazing, get the front piece welded in, then check for leaks.

DSCI0078-4.jpg


DSCI0077-6.jpg


DSCI0074-7.jpg
 
Re: The boardtrack- bobber-bicycle looking thing...

so sick! this thing is coming so close to being complete!
 
Re: The boardtrack- bobber-bicycle looking thing...

stocksucks said:
Well done welding. Seems perfect.
Have you tested it yet?
Click to expand...

No. I still have one piece to cut and weld in. I have been sanding down the edges and smoothing things out, then I can test it and check for leaks.

I'm working on making a site glass for the tank so I can see how much gas it in it. I work next to a smoke shop and they sell these little glass tube for smoking "tobacco". I'm gonna try and use one of those.

I got the flywheel back last night too. It didn't end up making it to the mill, but the fins are gone and I gave it a quick hand sanding. The machinist balanced it for me though.

Pics a little later.
 
Re: The boardtrack- bobber-bicycle looking thing...

Flywheel? Mill? I did'nt catch that... I ask because I work at a museum and currently I'm in charge of restoring an early 1920's flour mill..
How far apart is the tire from the seat post?
Keep it up.
Thanks a lot
 
Re: The boardtrack- bobber-bicycle looking thing...

Yeah, since this is a moving vehicle, I didn't feel that the fan and cover were needed. So I pulled the cover and had the fan blades removed from the flywheel (and balanced). It was suppose to be milled flat, but it didn't happen. Oh well. I scuffed it up a little and it should be fine. I can always have it done late on.

This is the flywheel now.

DSCI0074-8.jpg


And a pic of the tank after a lot of sanding and filing.

DSCI0076-7.jpg
 
Re: The boardtrack- bobber-bicycle looking thing...

so here is my question to you. On my engine the spark gets it's power from a small transformer that sits atop the fins of the fan. In between two fins is a magnet or weight I'm not sure. Anyway I'm pretty sure that it induces current every time that thing passes the transformer. How does you engine create current?
 
Re: The boardtrack- bobber-bicycle looking thing...

Same thing. The flywheel has two magnets. They power the Magneto (coil). There's a wire that runs from the magneto to the points (behind the flywheel) and also the plug wire that runs from the magneto to the coil.

Mine is right there!

DSCI0079-2.jpg
 
Re: The boardtrack- bobber-bicycle looking thing...

Hi.
I did the same, hoping that the moving air will cool down the engine.

Is it something like this?



I'll have to sand down and also maybe polish the rest on my fins, but I never really thought of that balance issue :oops:

Hey Beau, please tell me what is the distance between the rear wheel and the seat post.
I think I'm getting things wrong with my frame... Even though I took the measures from the plans I showed...
 
Re: The boardtrack- bobber-bicycle looking thing...

I think it's only like 3" or so.
 
Re: The boardtrack- bobber-bicycle looking thing...

I'll take a picture of it later for you so you can see what it looks like now. I would really like to make the engine not as wide by getting rid of the fins but I don't think i can do that and have it work properly.
 
Re: The boardtrack- bobber-bicycle looking thing...

Yeah you can. It's the same as mine. Otherwise you can lose the magneto, run a coil and use a small battery.

I guess your's sticks out though. That sucks. It will be tough. It also looks like it's steel. You could probably could find another flywheel with the same shaft and use that.

IMG_8994.jpg
 
Re: The boardtrack- bobber-bicycle looking thing...

yeah it is steel and really heavy... so how do you keep the magnet if all the fins are gone?
 
Re: The boardtrack- bobber-bicycle looking thing...

I'd take the flywheel off off and measure the shaft and diameter of the flywheel. You may be able to find another one from something else that has the magnet in the flywheel. Then you would have to move the magneto in further. But it looks like that might not be a problem. Check with a local small engine place.
 
Re: The boardtrack- bobber-bicycle looking thing...

cool I will look into that. I really appreciate all of your help.
 
Re: The boardtrack- bobber-bicycle looking thing...

Yep. That's a hard one. My magneto works inside the flywheel, so I shaved off the fins (We'll have to wait and see how clever that was :wink: )
Good luck with that Motopecane.
Hey Beau, I want to hear that engine! Hurry up :p
 
Re: The boardtrack- bobber-bicycle looking thing...

Beau said:
http://www.youtube.com/watch?v=ngvcykqdC2Y

:p
Click to expand...

Haha no we've already seen that! Just keep it up and I'm sure it will be going soon.
 

Latest posts

Back
Top