28 January, 2012

Great Divide Brewing Company Fresh Hop Pale Ale

don't let the Stone Brewing glass fool you, this is from Great Divide out of Colorado. I drank this on Saturday I think. Very yummy upfront hoppy beer with a smooth finish devoid of much bitterness. One of my favorite styles.

Miyata Details - Wheels/Tires

As if some of the details on this Miyata weren't weird enough, guess what I discovered when I started tearing down the wheels? It doesn't use a conventional 17" or 18" motorcycle wheel/tire. It uses some strange 1960 bicycle style setup. The tire and tube are marked "22x2.25" and the tire has a protruding lip that fits into a corresponding groove in the wheel mounting surface.


So here is the problem. The original wheel rims are horribly pitted chrome. Also the tires look to be originals, and are dry cracked. I was assuming I could replace the rims with new/spare 17" rims like used on the Honda Cubs I have so many of. Or the 18" rims from the Honda S90s I have. Not quite. The stock rims measure somewhere in between a 17" and 18" rim.

That means the wheel spoke length won't be ideal. too short for 18" rims, too long for 17" rims. I could cut about 1/4" off the spokes, but the threads won't be deep enough. So I would need to re-thread 72 spokes. And I'm sure it is a very small, fine thread that I might not have a die for.

But the land of Bangkok came to my rescue. When I ordered new spokes for the Kawasaki project, I noticed some vendors offered generic spokes in different lengths. So maybe I could get a set of spokes that were longer or shorter, without paying a custom spoke shop to make me new ones at $3 a spoke.

The stock spokes measure roughly 192mm long. I found the same joint that I got the Kawi spokes from have 184mm sets, with brand new nipples. I did some measuring, and it looks like these will work just dandy in conjunction with the 17" wheel rims. Which is great, because I have two very nice 17" rims, two 17" tubes and rim strips. All I need are two new tires.

So I spent the afternoon stripping down the stock wheel assemblies so I can clean up the hubs. And I'll place an order for my new spokes once I get a full price for two sets with shipping from the land of Bangkok.

Hopefully this grand plan works.

25 January, 2012

Miyata Details - Ignition

Interesting ignition/stator/coil setup on this beast. The stator is pretty typical, with the points and condenser mounted to the plate. What is somewhat unique, is the fact the points cam isn't attached the inside of a flywheel In fact, it seems to be on the end of the crank snout.

Points look brand spanking new, as does the condenser:

On all of my other bikes, a flywheel is bolted on the end of the crank, and rotates around the coils. Usually the inside of the flywheel has a cam that the points run off of. In this case, there doesn't seem to be a flywheel. And the combined coil and starter run inside the magnets, which are attached to a stationary drum:

Miyata Details - Seat

I very carefully pulled apart the seat on the Miyata. The seat pan is in very good shape, just a little dirty. The foam is a strange combo of three different types of rubber, foam, and a topping that feels like soft wall insulation. The whole thing is lumpy and bumpy, and will need a total redo. The upholstered cover is actually in pretty good shape, with only one small tear. I might try to fix that and keep the cover original.

It looks rusty, but the seat pan is mostly just covered with dried up seat foam:

Miyata Details - Exhaust

This is one of the parts on the Miyata that is quit a bit different than any of the other bikes I have. The header pipe is conventional, but the main exhaust expansion chamber has a mount built into it, and a silencer. The rear part of the expansion chamber actually fits over the end, and is secured with a nut that attaches to the long threaded rod sticking through the middle.

Main diameter is 1", then expands to 2.75".

Miyata Details - Shocks/Forks

I've been disassembling some of the smaller items on the Miyata, including the rear shocks and front fork assembly.

Rear shock assembly town down. Notice the gray plastic spacer that sits under the spring:

Front fork uses leading links, with small shock/spring combos. Very similar to the early Honda leading link setups:

Both front and rear setups laid out:

Chris H.

23 January, 2012

Amal 392 Detail Photos

As the title suggests, some detail shots of the Amal. The throttle valve is 16mm in diameter:

22 January, 2012

Miyata Details 1

I couldn't help myself. I wanted to see the condition of the top end on the Miyata Engine. It turns over very nicely, so I knew it wasn't frozen up. As it happens, the cylinder looks fantastic. Very clean bore, no scoring at all. And since I don't have any specs, I was curious what type of carb it runs, and what spark plug. Of course the spark plug has likely been changed, and who knows if it is the correct one. But at least I know the thread pitch and reach are correct.

Interesting combustion chamber shape, with offset plug location:

Amal carb? Really? An Amal 392 to be specific. I'll have to research this monster to see how big it is. PS: I don't have big hands, so you can compare the size of the inlet to my thumb in this pic:

BTW, the spark plug was a Champion L90C. Which corresponds to a NGK B4H.

Edit: For Sean and Mr. A:

I did some google searching on the Amal 392. I found this posted on the VJMC list:

"To help aid in identifying what might have used this 392 Amal I have posted
photos and they are in the 7th group on first page. 20mm bore on mounting
flange with a bolt spacing of 38mm. Thanks for your interest and help.

Wally Skirman"

Miyata Teardown Deuces

I spent about an hour this morning finishing the teardown on the Miyata. It went pretty smoothly, as everything had enough oil and grunge on it to not be rusted. It was also interesting to see how different this bike is put together. Completely different way of mounting parts, more and different types of fasteners etc.

End Result:

Edit: I weighed a few of the major parts, just for shits:

Frame: 23#
Engine: 30#
Front Wheel: 12#
Rear Wheel: 13#
Front Fork Assembly: 10#
Swingarm: 5#
Exhaust: 2#

21 January, 2012

Miyata Teardown 1

I cleaned up the garage a bit, and got the Miyata Miyapeto into the forefront, for a bit of teardown.

Handlebars off:

Main electrical junction. Despite the early 1961 vintage, the Miyata is both 12 volts and features an electric starter:

Seat off:

Now it is time for grub.

01 January, 2012

Working on the FV

I've spent a couple hours this weekend getting the FV engine back in the FV. It's been a while since I've wrenched on the car, so I've had to spend a few minutes sorting through bolts and parts, and reminding myself what went where.

The Vee back on its feet, engine and trans in:

I also had to rearrange a few bikes to get the Vee up front. That's 14 bikes and 1 FV:

I still have a long list of To-Do items on the Vee, including plumbing the oil filter and cooler with new oil hose that should be in at the race shop by Tuesday. So I expect a few more weekends of work before I have it running again.