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Topics - pidjones

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Turning Wrenches / Help ID these clocks
« on: January 23, 2021, 02:29:27 PM »
These came with my RD400c, but obviously don't fit up (I already have a good working set. The face diameter is ~75mm and the bracket has 80mm mounting hole spacing. Wires from them are: 2 greens, black, brown, blue, and light green with red stripe in one bundle and a green and a brown in the other bundle. The light green/red has a female bullet connector, all others are male bullet. No labling other than the Nippon Seiki branding. Both seem to work fine (tested with my battery drill).

Turning Wrenches / Inline oil filter to replace tank screen
« on: December 17, 2020, 09:33:09 AM »
I did an endoscope camera inspection of the oil filter screen in the bottom of my oil tank, and it is shredded. Obviously no easy way to replace it (I'll remove the bits with hemostats hopefully). But, I would really like to protect the oil pump (and thus the engine). So, I searched for an inline oil filter or screen. All that I could find was for either jet skis or snowmobiles, and they are a lot larger than I care to mount.

So, I bought a cheap inline fuel strainer for outdoor power equipment from a local auto parts store and pulled it apart to see what it offered. It has a fine nylon mesh screen that appears to be thermal bonded to a frame inside. I put a few drops of Yamaha 2 stroke oil for injection into the basket formed by the mesh and observed that it seeped through fairly easily.

So, my options are to either use one of these filters inline, make one of my own design with smoking pipe screen for filter (readily available on Amazon and "head shops" now that legalization of hemp smoking is in vogue), or do without.

Has anyone attempted augmenting or replacing their tank-mounted screen? Do you think that the nylon would hold up (easiest solution)? I have plenty of syringes and Mighty Vac pump to purge any air from an added filter. If I made one it would probably be aluminum spun out on the lathe with a SS screen (brass also an option). Might do that anyway just as an exercise.

Photo is the available jet ski/snowmobile filter top and disassembled power equipment filter bottom.

Turning Wrenches / A quick measurement, please
« on: November 17, 2020, 01:34:02 PM »
Would one of you fine folks provide me with the measurement from the center of and RD400c (US version, if  it matters) seat hinge pin to the corner 90 degree bend? Either my Vietnamese seat has the wrong dimensions, or the seat hinges I ebayed are not right for the bike. The seat comes almost six inches from closing. That would require just a few mm adjustment, for which I plan to account by machining a couple small spacers to go between the hinge and seat pan.

eBay/Craigslist watch / Don't know why....
« on: November 06, 2020, 07:06:18 AM »
This bike was removed because he wouldn't answer messages on it. Now he has relisted with no message link (but new photos). Why is he doing this?

Turning Wrenches / Found - B8ES plugs
« on: November 03, 2020, 11:28:06 AM »
Out for a haircut this morning, stopped on the way at our local NAPA autoparts. Asked if they had B8ES and they had 5! I bought four and they said they could have eighteen more in a few days. Must be remaining in-stock in the stores. So I'll go ahead and install the resistor caps (when they come in from EC) for now, and when I run out of the non-resistor plugs switch to BR8ES.

Turning Wrenches / Is this a viable option for an RD400c?
« on: October 19, 2020, 04:28:07 PM »
With no B8ES plugs available, I'm thinking of trying to remove the resistors from a pair of LB05FP caps (replacing the resistor with solid copper) to enable running BR8ES plugs, which are readily available. I've swapped resistors in several NGK cap designs for GL1000s and CB750Fs with good success. My basketcase RD400c came with no plugs or wires (but does have coils). I also have the caps for attaching the wires to the coils from a left-over CB750F set. I also have access to good non-resistor wires.  I just think it would be stretching an old set of coils to ask them to fire through 10K ohm instead of 5 K ohm. I would just buy non-resistor caps, but can't find them in the 90 degree model.

Events / East Tennessee Motorcycle/Bicycle/Crafts show
« on: September 04, 2020, 06:31:52 PM »
October 3rd (rain date Oct 17th) 9am - 2pm @ Lighthouse Christian Church  in Powell (North of Knoxville), TN. We expect some great old (maybe some new) machines. Ride or trailer in, we don't care. Good church food and fellowship. Flyer and map are here:

General Chatter / RD400 seat hinge substitutes
« on: September 04, 2020, 09:06:22 AM »
So, RD400 seat hinges being priced high (low supply), are there any other Yamahas that have similar hinges that will substitute? I understand the XS 650s might - any others? I don't mind elongating mounting holes and such. I think that I will probably have to spring for a Vietnamese seat for mine as the set pan is quite rotten (and of course, missing the hinges).

Haus of Projects / Pidjones' bicentenial build (a '76 RD400)
« on: August 26, 2020, 05:57:33 PM »
Guess I should start a build thread. '76 RD semi-basket case. A roller with engine in frame and a BIG tub of parts. Already ordered 98% of the rest that I'll need (hopefully). It is Chappy Red but I plan to repaint Geneva Green and call her Geneva. She has been setting in a storage shed (in the dry by all evidence, but housing a critter family) for abut 20 years in Ohio. I bought her in Columbus fro a guy that buys old bikes. I had a brand new '76 that I sold in '79 just before getting out of the Navy. I've been rescuing Honda GL1000s and a CB750F the past few years, but always wanted another RD.
Today I took in the paperwork to get a new title (old one lost many years ago) and transfer the tags from a GL1000 that i sold yesterday. I had pulled the master cylinders apart yesterday so today I cleaned and reassembled them. New calipers came in and I trial mounted them. They are repops, and the front needs a little shaving to run straight on the disk.
Disconnected all the tubes from the oil tank, drained a couple ounces of oil out (20 year old and still flowing?), and put some isopropyl alcohol in it that drained out through the supply line fairly easy. I'll still put a camera down in there to  inspect the screen.
Plan is to 98% restore and make her a warm weather daily rider for next summer.

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