Bike with homebuilt engine

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boutje
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Bike with homebuilt engine

Post by boutje » Sat Nov 29, 2014 7:24 pm

After helping with the build of the jawa dieselbike , i want built my own bike.
See the built i was helping with:
http://www.suckindiesel.com/thingy/view ... =31&t=1775

This are some specs of the new bike:

- homebuilt engine with parts of a yanmare clone (418 cc)
- a suzuki dr 350 6 speed gearbox is fitted (maybe a dry clutch??)
- homebuilt frame
- brembo wheels and brakes (17" wheels)
- cagiva mito frontfork

It will be a sporty looking bike.

I have already started with the design of the engine/gearbox.

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coachgeo
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Re: Bike with homebuilt engine

Post by coachgeo » Sun Nov 30, 2014 12:37 am

Sounds exciting. Can't wait to see pics and read the write ups as you go along.

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Tetronator
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Re: Bike with homebuilt engine

Post by Tetronator » Sun Nov 30, 2014 3:10 am

I was waiting for this post ever since you told me about your plans, can't wait to see what you're going to tinker-up next! :D
"...the fearless Dutchman..." -Stuart
"...the mad Dutchman..." -Diesel Dave

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Sun Nov 30, 2014 9:22 am

I started with making the easy parts.

Here are the first parts.

A set of triple clamps.
Made out of 6082 T6 aluminium.
Cnc milled.
Attachments
voorvork.JPG
Front fork of the cagiva mito
kroonplaat half af.JPG
Raw piece of the triple clamps.
foto kroonplaat diesel.JPG
The design of the triple clamps in the cad cam software

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Fri Dec 05, 2014 7:19 pm

After some frame calculations i have more specs of the new bike.

Wheelbase : 1390 mm
Castor angle : 25 °


The front wheel will be a 17"x 3.00
The front tire 110/70-17

The back wheel will be a 17" x 4.00
The back tire 150/60-17

The next thing i going to do is design and build the swingarm.

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Tetronator
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Re: Bike with homebuilt engine

Post by Tetronator » Fri Dec 05, 2014 9:59 pm

Making good headway on the bike I see, keep it up! :D
"...the fearless Dutchman..." -Stuart
"...the mad Dutchman..." -Diesel Dave

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H̶o̶n̶d̶a̶ ̶C̶B̶R̶6̶0̶0̶F̶2̶
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Blunt Eversmoke
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Re: Bike with homebuilt engine

Post by Blunt Eversmoke » Sun Jan 04, 2015 6:58 pm

Homebuilt engine? Now that's something I'd love to hear more about :) Displacement, cyl count, layout, injection, induction? 2 or 4 stroke?

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Re: Bike with homebuilt engine

Post by Mouse » Sun Jan 11, 2015 10:23 am

Good to see someone else using CamBam.
Kubota Z482 which is plodding on with unnerving reliability. Three years so far.
1900 Diesel Bike being rebuilt with better clutch control.

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Sun Jan 11, 2015 11:03 am

Mouse wrote:Good to see someone else using CamBam.
I have several cadcam programs.
But i find cambam the best one.

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Sun Jan 11, 2015 11:05 am

Some update on the build.

I have bought a set of ligthweigth brembo wheels.
Attachments
wielen 1.JPG
Set of wheels

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Sun Jan 11, 2015 11:13 am

And i lost more weight on the wheels by removing the spoke covers.
Each cover weighs 500 gram.
So the total weight reduction is 1.5 Kg each wheel.
The next step is to sandblast the wheels.
Attachments
voorwiel kappen verwijderd.JPG
Total overwiev of the wheel without covers
voorwiel kap verwijderd.JPG
The spoke without the cover
voorwiel closeup.JPG
Closeup over the wheelcover

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coachgeo
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Re: Bike with homebuilt engine

Post by coachgeo » Sun Jan 11, 2015 4:11 pm

Aerodynamic drag w/out those covers might be more of a gain then the weight you reduced? Besides what weight you keep you want down low. But judging by your post you know shiats more about this stuff than I do :oops:

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Sun Jan 11, 2015 6:16 pm

You are absolutely right about the drag.
But the advantage of light wheels are much bigger than the drag isseu of the wheels.

Light wheels give a much better handeling in corners (specially good for the suspension) , better braking and a better acceleration.

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Re: Bike with homebuilt engine

Post by Blunt Eversmoke » Thu Jan 22, 2015 2:50 pm

So, what about the homebuilt engine? Can't wait to hear the details :)

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boutje
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Re: Bike with homebuilt engine

Post by boutje » Fri Jan 23, 2015 7:13 pm

Still working on the design.
I'm very busy with my own business , so the project is not going fast.

But it will be a 416 cc one cilinder.
With a cassette gearbox , external fuelpump , overhead camshaft and liquid cooled cylinder.

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