some motorbikes. . .

[Rapelapente]

Honda happened to release some strange designs.

[Paul Pless]

but. . .

[Paul Pless]

you meet the nicest people on a honda

[Paul Pless]

1_K-7MegHx2VjGqI2G3xpVpA.jpg

[LeeG]

Imagine hundreds of those. what is it?

[Paul Pless]

its an old honda scooter with the headlamp/windshield assembly removed

140 mpg

[LeeG]

I mentioned to my daughter that I decided the Yamaha TW200 would be the ideal motorcycle for here and she said “You’re not getting a motorcycle are you?” I said of course not just that I thought the Honda Trail 125 was the bike but I changed my mind. My 1500 watt ebike is plenty. But I keep thinkingnof a better ebike and really like the concept of 65 lb e motorcycles. A couple hp isn’t much but is scads more than my body puts out.

[Canoeyawl]

Started roughing in a couple of new exhaust valves this afternoon. These are SS "blanks" the head and stem length come as unfinished.
Head diameter, thickness, and seat angles are done. Stem length, keeper grooves and heat treat the tip, next stop.

B46748FF-3150-4BAD-A62A-ECD35D4998F4.jpg

[StevenBauer]

This is a good watch, vintage racing sidecar makes a road trip:




https://youtu.be/PNgYW5N95z8

[P.I. Stazzer-Newt]

[Canoeyawl]

F6796151-6E23-4656-A771-B1249F1BF4C6.jpg

86D31F3D-D72F-489E-9A15-482ACE28B072.jpg

http://anarchadia.blogspot.com/2008/...ap-v-twin.html

[rayman]

I think I could handle one of these little jiggersvw sidecar.jpg

[Garret]

That JAP-Norton is wonderful! NorJAP? JAPton? With Tritons so well known, I guess it'd have to be JAPton.

[Chris Coose]

I bought this 2014, 900 Scrambler with just 3000 miles on it for primary transportation. I still walk out the door in the evening thinking I need a jacket for warmth. There are a bunch of abandoned roads connecting small villages all over the Yucatan Peninsula

[Ted Hoppe]

I bought this 2014, 900 Scrambler with just 3000 miles on it for primary transportation. I still walk out the door in the evening thinking I need a jacket for warmth. There are a bunch of abandoned roads connecting small villages all over the Yucatan Peninsula

great bike. Congratulations! AGATT. No such things as a little ride.

[Ted Hoppe]

I rolled up to this cool bike the other day. There was lust in my heart.

F039BB0B-1AA0-4E8A-B749-89D0F5E86ABB.jpg

5B276223-F83C-48AF-889D-7FBDF5E1C5E4.jpg

A3CDF616-EDE0-485A-8181-B2A3FD2D702E.jpg

94EDEE24-0783-40BA-A06D-57926E2D4516.jpg

7B34D57C-4604-4648-8742-566471A2F0AF.jpg

[George Jung]

Nice! Very nice!

[Gordon Bartlett]

That is one beautiful bike, I love the looks, but how does anyone ride it without burning his pants off on those exhaust pipes?

[Paul Pless]

motorcyclists used to wear high leather boots and chaps

[Paul Pless]

motorcyclists used to wear high leather boots and chaps

but for rollie free of course

[Nicholas Carey]

motorcyclists used to wear high leather boots and chaps

Gasoline boots. Semi-custom classic motorcycle boots, made in Mexico in a town that's been making boots for centuries. $300, 4-6 week lead time. Your choice of leather, stitching, sole.

https://gasolinaboots.com/index.php/...classic_boots/





Here's flash pairs people have had built.

[Canoeyawl]

1917 Dayton Motor Wheel...

B8FBEEBB-FBB8-44E6-801D-98F8B9EC5494.jpg


What do you do when you need carburetor parts?

Just call some fool with more time than money...

97FF8E95-81BE-4D14-B183-4AB0E4480BFC.jpg

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[Oysterhouse]

Nicely done !

[hawkeye54]

How did you accomplish the knurled part ?



Rick

[Canoeyawl]

There are not many of these carburetors out there (none that I could find) and I had to wing it after searching images of this particular "motor wheel". I copied what I saw esthetically and based everything (thread pitch/bore dimensions) on the existing carb body. The "motor wheel" was built in this country by A.O. Smith (The plumbing company) and later by Briggs and Stratton. If you search for "Smith Motor Wheel" you can learn more. This version (Dayton) was sold as an assembled motorized bicycle (front wheel drive) rather than a Powered wheel that could be fitted to any bicycle. The was also a powered cart.
There is a nice example of a restored motor wheel in the Owls Head Transportation museum collection.
Anyway it was a fun little project. Today I fussed and got all the copper crush washers and packing for the adjustable main jet. Seal and gasket technology was still in it's infancy, so those bits are crude and simple but effective leather and soft copper.

"Knurling" is a fairly simple process using pressure and rotating "wheels" or "knurls" that are forced into contact with a round rotating piece.
This below is a typical simple lathe knurling tool, there are variations of the technique and some calculations of diameters to make all work correctly. (You don't want to end up with 23-1/2 serrations!)
The part is turned (cut) just slightly up to the ends of the knurled area to neatly define it. The are hand held knurling devices for various applications. It takes a surprising amount of pressure to deform the surface even in bronze

(I'm sure there are dozens of u-tube videos covering it in far better detail than I can explain!)
2EC3B8F5-0EDF-4328-BEA9-425320CC24AF.jpeg

edit to add this pic which shows the original carb:

C8DFC602-4B1A-48B8-A75F-CAE12B9524CB.jpg

199AE678-420F-408A-8231-28BD4C01A0E4.jpg

[Tom from Rubicon]

Do you post on either of the motor bicycle forums?
Blind internal threading to a shoulder is no big deal with a CNC. Done a lot of by rack of eye on a semi production scale I did for several years. An internal stop groove which you could have used takes a lot of the thrill out.

Tom

[Canoeyawl]

I figured someone (you Tom) might notice that blind internal thread detail
(The thrill of a crash keeps you on your toes)
Lathe running in reverse, rt. hand internal thread tool bit, working from the shoulder out, travel indicator on the front of the carriage - piece of cake
With an ancient hss cutter I keep in my drawer just for this sort of stuff.

(.800x24, probably 13/16" which is an old kitchen faucet thread- A.O. Smith right?)

[Paul Pless]

i have a question?

what material is the crankcase, cylinder, and head on this motor cast from? the cylinder and head itself specifically? is it cast iron that's been plated?

[Canoeyawl]

I don't have the entire thing in my possession, but I have looked at a hundred images of them. The cylinder and head are cast en block of iron, the crankcase is aluminum, carburetor is red brass, the wheel itself is stamped sheet metal riveted to a machined hub. One of the two "ears" or arms, the one that mounts to the bicycle, is plated iron the other is en bloc with the crankcase. The iron and brass bits were nickel plated, the aluminum was polished. I am still trying to figure out who designed the carburetor.

It is a four cycle engine, with the really clever bit being the camshaft. It is an 1/8 speed cam with 4 lobes and the camshaft itself is the drive axle for the wheel, so direct drive. (Note, almost all 4 stroke cycle engine camshafts operate at 1/2 crankshaft speed)

Blueprints are here:
https://www.scribd.com/doc/60156136/...yer-Blueprints

This is the best pic I could find of this carburetor, which I more or less copied, choosing a coarser knurl for a better grip:

8C71B6A9-6212-4F32-BD61-C57E0339FC34.jpg
I noted some similarity to other (ancient) British carburetors and in trying to guess who may have originally built this carb design as it has some characteristics with S.U. I was led down quite a few rabbit holes.

The "Motor Wheel" itself was an immigrant from England developed and patented in 1908
see: https://en.m.wikipedia.org/wiki/Arthur_William_Wall

A "rabbit hole" of some interest was the one the led me to A.O. Smith making stamped steel frames for Henry Ford's model T to the tune of 40,000 per year. It must have quite a large and noisy factory punching out automobile frames 24 hours a day...
All of which just helped confirm my suspicions of incest in the automotive industry.

There are rumors that Porsche had an electric version of this thing early on, but I can't find the bicycle application.
The first wheel hub motor was patented in 1884:
https://en.m.wikipedia.org/wiki/Wheel_hub_motor

(apologies for the digression)

[amish rob]

Hey! I have a knurling tool. Some neat old guy gave it to me.

[Canoeyawl]

I love a good knurl...
Probably the best examples you could come across are by Starrett:

522D1040-003E-4AA7-94FE-B31496A988B4.jpg

[amish rob]

That’s it. That means I have to go figure out how to use the damned thing, now.

[Garret]

Don't apologize for the digression Jake - fascinating!

[Garret]

Well - it has to be registered as a motorcycle... Tecumseh power forever! Or maybe replace it with a Honda so it'll run for more than a week.

No connection, etc.

https://syracuse.craigslist.org/mcy/...561474964.html

[Ted Hoppe]

Well - it has to be registered as a motorcycle... Tecumseh power forever! Or maybe replace it with a Honda so it'll run for more than a week.

No connection, etc.

https://syracuse.craigslist.org/mcy/...561474964.html

That would be a fun scoot. so many cool things you could do with it.