Motocycle engine design

[Mitchg07261995]

After lots of research and dissapointment that vintage bike replicas can be purchased, but no one makes the old single cylinder engines from the early 1900's I have desired to design and build my own engine based on an engine design that I found, the engine I am basing mine off of was designed in 1906, it is 450cc and 3.5 hp, my engine will be 1 liter, have a 4" bore and a 5" stroke, I have designed a few of the components, a crankcase half, crank disk and the cylinder
Here is what I have so far in the design process
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg2_zps0438fa6f.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg3_zps7ff91071.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg4_zps6f1c483f.jpg

 

[barnesrickw]

The Muskegon Motorcycle Club has some early 1900's bikes, and one of the members that I know of is a machinist. If you would like a link and see if they can help, I will be happy to provide.

 

[BronxFigs]

On the MadModder Forum/Project Logs, OKTomT builds a vintage, single and twin-cylinder motorcycle/bike engine based on a 1906 design. The build tutorials are very interesting, insightful, and loaded with links and information. You may already be familiar with Tom's work, and designs, and it's a good place to start.

Also, somewhere on You-Tube, I've seen a scaled-up version of the "Hoglet" mounted onto a motor bike. A quick search will show "Hoglet" engines built with a closed crankcase...just scale it, and build it with a single-cylinder. Easier said than done, but it's an option.

Frank

 

[Swifty]

Wow, that's going to be a big 1000cc single cylinder engine.

Paul.

 

[Mitchg07261995]

On the MadModder Forum/Project Logs, OKTomT builds a vintage, single and twin-cylinder motorcycle/bike engine based on a 1906 design. The build tutorials are very interesting, insightful, and loaded with links and information. You may already be familiar with Tom's work, and designs, and it's a good place to start.

Also, somewhere on You-Tube, I've seen a scaled-up version of the "Hoglet" mounted onto a motor bike. A quick search will show "Hoglet" engines built with a closed crankcase...just scale it, and build it with a single-cylinder. Easier said than done, but it's an option.

Frank

That's the exact engine and bike I'm basing my design off of

 

[Mitchg07261995]

The Muskegon Motorcycle Club has some early 1900's bikes, and one of the members that I know of is a machinist. If you would like a link and see if they can help, I will be happy to provide.

A link would be awesome I have a lathe at home that I can use to make some of the smaller parts like the piston, valves and bushings but I need to find someone who I can pay to make the larger parts because my lathe is way to small for them

 

[charlesfitton]

I was lucky to get a set of the first 12 editions of Model Engineer magazine. They cover the build details of two different engines...

 

[BronxFigs]

Mitchg....et al.

There is a gent named Elden DuRand who makes gas engines from scrap steel, weldments, borrowed parts, etc.....and, plenty of skill. Not exactly motorcycle engines, but some of the machining techniques that he uses for his engine builds can be employed when fabricating any engines, be they, motorcycle, stationary, etc.

Check out: "ELDEN'S ENGINES" ..... I wish he was my neighbor!!!!

 

[velocette]

Hi
Had a quick look at the photo's and what jumped out was the crank arrangement.
With this setup and with no additional flywheel this would be completely out of balance.
A bit more research is required.
Just an observation on my part I am sure that other contributors to this forum can offer useful help to get this project up and running.
Can only add to the advice to look at the "Mad Modder" posting.

Eric

 

[TorontoBuilder]

After lots of research and dissapointment that vintage bike replicas can be purchased, but no one makes the old single cylinder engines from the early 1900's I have desired to design and build my own engine based on an engine design that I found, the engine I am basing mine off of was designed in 1906, it is 450cc and 3.5 hp, my engine will be 1 liter, have a 4" bore and a 5" stroke, I have designed a few of the components, a crankcase half, crank disk and the cylinder
Here is what I have so far in the design process
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg2_zps0438fa6f.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg3_zps7ff91071.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg4_zps6f1c483f.jpg

Thats great, I've wanted to have a vintage motorcycle for years and came to the conclusion I'd have to build my own and try to get it approved to ride on the road. I'd be very happy with 450cc.

 

[Theclockworks]

I think you are getting a little carried away with the size of engine 1000cc single ? What bore and stroke are you thinking of ,I would say you would be saving yourself a lot of tears by sticking to say 500/600cc but that's just my humble opinion.

 

[chrisinestes]

After lots of research and dissapointment that vintage bike replicas can be purchased, but no one makes the old single cylinder engines from the early 1900's I have desired to design and build my own engine based on an engine design that I found, the engine I am basing mine off of was designed in 1906, it is 450cc and 3.5 hp, my engine will be 1 liter, have a 4" bore and a 5" stroke, I have designed a few of the components, a crankcase half, crank disk and the cylinder
Here is what I have so far in the design process
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg2_zps0438fa6f.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg3_zps7ff91071.jpg
http://i1279.photobucket.com/albums/y522/Mitchell_Geiger/imagejpg4_zps6f1c483f.jpg

When you get that done you'll have to ride that up to Estes Park and show it off.

Chris

 

[Barnbikes]

I am the middle of designing a bicycle engine using a 1100cc VW Bug cylinder.

Will be watching.

 

[barnesrickw]

The name of the machinist at the motorcycle club is Adam. I forget his last name. Here is a link, and a picture of one of their antique bikes. http://www.muskegonmotorcycleclub.com/
View attachment ImageUploadedByModel Engines1424656575.908942.jpg

 

[dodursley]

In the midst of browsing about hot bulb engine I found these posts, so this info may be useful, although a but dated.
Model Engineer published a series of articles on the construcion of motorcycles in 1901 to 1904(volumes 4 to 8 ). There were reprints of these issues in bound form in UK some 15 ? years ago.The motor bicycle went on past my most recent one ( vol 8 ) but the motor tricycle is complete. The volumes do appear on UK ebay occasionally.
a list of the index of automotive articles is attached (hopefully) which you may find useful

View attachment ME vol 1-60 automotive.xls

 

[1dbweldor]

As far as the piston goes you might come out money ahead to contract the piston to another company. I used to take the 500 Yamaha singles to 748. The first few I would machine the piston from billet, worked pretty good but not quite what I was looking for. I sent prints to Venolia for a quote and ended up purchasing from then on out. They would make whatever you want for reasonable money. You can spend more time on other things more important and end up with a much better piston than what you can make. They make their parts with better material, more precise machining, and not to mention the heat treat is a lot better. That's what they do. Just something to consider. Good luck on your build.

 

[Mitchg07261995]

We'll a lot has happened since my last post. I was homeless for almost half of last year and moved to Minnesota in July, I got married and am currently working a crappy job until I find something at a factory or a local machine shop.
Since last year, I've lost all my drawings but have downloaded a cad cam called onshape for my iPad mini, and have been redesigning my crankcase for the board track racer on there. I've still got a couple kinks to work out with the software so I can finish my drawing, but I will be posting my current progress in the design process and build on here.

One awesome thing this cam allows for is you to choose your material for the part and it will tell you how much said part will weigh XD

 

[Mitchg07261995]

Here's what i have so far,
Material for the crankcase will be 4130.
I'm planning on producing 3-4 complete board track racers, one for me, one for my father in law, one to display and one to sell. I've got a cousin that will help me do the welding to produce the frames, I just need to find someone to help machine that parts. I might just have to look into, venolia, thanks for the suggestion 1dbweldor

 

[Mitchg07261995]

Here's what i have so far,
Material for the crankcase will be 4130.
I'm planning on producing 3-4 complete board track racers, one for me, one for my father in law, one to display and one to sell. I've got a cousin that will help me do the welding to produce the frames, I just need to find someone to help machine that parts. I might just have to look into, venolia, thanks for the suggestion 1dbweldor

zx
Does anyone have a suggestion on where I can find some 1.625 steel tubing for the frame?

 

[stevehuckss396]

1-5/8 tubing is a popular size for roll cage's. Maybe you can get some pieces if there is a race shop somewhere near you.