Cranbrook Pre-Build Mockup and Advice

Not sure if this should be here, or in the classic/board tracker forum, but...

Hi everyone. I'm new here, and very new to this motor bicycle scene. Just starting to learn about motor bicycling and how popular it is among home-builders. I had seen the Derringer cycles and the Imperial Cycles that were being sold for ridiculous prices years ago, but never thought to go and make my own. Then I just yesterday stumbled across this forum which is an amazing resource.

So I'm thinking of building my first motor bicycle. I love the classic look of the old style motor bicycles and would like to go with that style. I also want to build this thing on a budget as it's my first and I just want a taste for it.

Seeing that the Huffy Cranbrook is such a cheap complete bike, I figured I'd use that one as my base. I've been messing around in photoshop and have come up with this (colors will be different):


What do you think?

Some questions I have that I hope you may be able to answer:

The engine kit I'd like to use is the BGF engine kit. I've read varying reviews that people have posted regarding mounting this kit to this frame. Is it a relatively easy mounting process? And since the Huffy is a coaster brake bike, will there be any issues with installation on the rear wheel?

The tank is an Imperial Cycles tank, so I'm assuming it should install pretty easily, no? What kind of hardware is required to mount a tank like this to the frame of the bicycle?

And finally, the setback seatpost.... Can't figure out where to get one of these that will take a saddle with standard rails on the bottom. And I don't know how I could make one myself. Any tips?

Again, I'm new to all of this so it's all a learning process, and I appreciate any advice you might be able to share.

Thanks!

Thanks so much for the information. I've read that some people remove the dust cap entirely? Is that not wise?

Okay..... so obviously the bike needs a bit of cleaning up before it won't kill me. I'm pretty familiar with working on bicycles so that should be okay.

I wasn't planning on drilling into the frame. I read on some kits that they require you to drill into the frame.... and I thought, that cannot be good for the integrity of the frame. The kit I'm looking at comes with this though:


and it states in broken english that the engine comes with: "U-Clamp bigger frame adapter ( no drill hole on the bike frame needed) (if bigger mount do not need U-clamp)"

So will I not have to drill the frame if it comes with that? I guess it doesn't seem too hard to make my own mount either. Is the exhaust pipe clamp a pretty simple modification?

Not sure really what you mean when you say the pedals just screw into the crank arms though.... On any "real" bike I've been on, the pedals screw onto the cranks... just with reverse threading on one side.

So the issue with the dust cap is that it sticks out too much for the wheel sprocket to mount onto the hub? Is that right? So by making the dust cap thinner, it sets it in more and the sprocket can rest flush?

Thanks for the info.