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1  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 19, 2017, 02:22:43 PM
They work on windows and android for me,  anyone else?

Try http://www.hondatwins.net/forums/1-project-logs/95345-1993-cb250-nighthawk-basket-case.html
2  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 19, 2017, 09:21:26 AM
Nice job on the rear wheel Alan very impressive. Looking forward to seeing where this goes.


Thanks, I've figured a lot of it out but there are a few unknown variables and some details left to solve.


Wow, Alan! Nice job, man!
That original seat loks nice, but yes that gap... You might have o do a custom seat, or custom ( maybe epoxy) tank.
Anyway, looking awesome so far!
Cheers,
P

Thank you,  I'll probably bring in the stock tank,  it'll fit the frame and mate up to that seat, plus it's got very good capacity. I have a work around yet to test for the "styling" of it... 
3  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 18, 2017, 11:17:28 AM
On to the Brake side of the hub.

One simple spacer over here to fill the gap. However it was late and I didn't feel like rounding a square piece of stock to get the right spacer length, so I made a two-piece spacer for this side.









Looks like plenty of room for the brake stay and actuator rods.

I had to mill down the sprocket carrier to restore chain line center, and while I was at it I shortened the sprocket studs so they won't contact the swingarm.

I soaked them in plain 5% Acetic Acid White Vinegar (safe enough to drink) for a few days, the acid will affect the rust but not the steel, unless you're very patient. Then I zinc electroplated them with the solution left over from some experimenting last winter. They came out looking more galvanized than I'd hoped (and there is still some rust seen inside the nut threads) but I can always throw them into the vibratory polisher with some corn cob to shine them back up when I replate the rest of the hardware.



Here is a shot with the rear wheel mounted, stock seat set in place, and that 350 tank in place (too bad the seat gap is so bad) and the engine mounted.

4  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 18, 2017, 10:38:58 AM
Next I needed to get the wheel centered in the swingarm. (Centered yes, just like the stock wheel was. Not all rear wheels are actually centered in their swingarms to be in the center of the bike though, so look out for this if you ever get into this situation) Unfortunately to center this wheel I needed to take off a little material from the drive side, specifically the area that the seal that rides around the wheel spacer is driven into. So I'd have to figure out a new way to replace the seal.
With a little consideration I figured a thin spacer with an o-ring would do the job, this area is only sealed from the elements to protect the spacer on the sprocket carrier and it's sealed bearing, not all that critical but necessary.
This is what I came up with:



It's a bit thinner than the stock seal:


But it fits and with a little grease behind it, does the job without binding.
















It fits and does the job of keeping the wheel centered and most of the elements out of that area.

5  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 17, 2017, 01:18:31 PM
I bolted up the swingarm and mocked up the CB700SC shocks, I like the look and they're about 2" longer than the 250's stockers.
Here's a photo mocked up with a CB750K tank, the rear mount was close but this tank was just too wide for the frame.



Here's a CB350T tank mocked up, I like the look but this tank is a little rough and much smaller than the stocker, nope.



On with it then, I'll be adapting the rear wheel from a 90's vintage 750 Nighthawk. I have it lying around for another project and opted to use it here, just like most of the upgrade parts I'll be adapting.



This wheel already has an unused Michelin Pilot Activ 130-70/17 and new All-Balls wheel bearings installed.
To adapt this wheel I simply had to center the wheel in the swingarm and mill the sprocket carrier for chain line, there is plenty of room for a wider tire later on.

First order of business is to adapt the 15mm axle to the 17MM wheel bearings, it's easier for me than cutting the swingarm slots to accept the 17mm axle, which would be way too long anyway. Since the bearings were new there was no sense in swapping them out to fit the axle either.  So I turned some steel sleeves with a 1mm wall and a flange on the end from stock I had on hand, not stainless but it hasn't rusted in a damp basement for 6 years either so it's a good alloy choice. Starting out with narrower stock would have been easier, but the stock was free...   I'm no machinist, and my machines are best classified as toys, but I'm confident I can get this done.



6  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 17, 2017, 12:00:03 PM
Thanks Andy! This bench actually takes a bit of effort to move, casual contact won't get it rolling away.
The rubber wheeled castors I used are Harbor Freight #61650 and while they are titled "Light Duty" they have a 250lb capacity. Right now I'm chocking the wheels with some 1/2" quarter-round pine, it seems to do the job quite well but I may swap two out with locking castors at some point if it becomes an issue. Another easy trick is to use an appropriately sized welded steel ring to keep them from rolling.

But seeing as this is more of a fabrication table than a maintenance stand I'm not too worried about it at the moment. If needed I can always roll this table against a wall and with a helper use a ramp to roll a bike up and on. I'll be sure to add a wheel chock and or some tie down points too before I put together the front end of this bike. The jack stands I'm using now won't be as useful then as they are now.

I'll be using the stock seat on this one, I'll clean up the back end as much as I can.
I've been looking at the CB Two-Fifty models that the rest of the world got, but they seem to have received very little enthusiasm. With my 17" cast wheels, street tires, tall-ish suspension and planned 'old-fashioned' braced scrambler handlebars it's hard to put this one into an existing category. I took another look for examples of some key design elements:

I really dig this Yamaha SR250



These are of interest for one feature or another.




7  General Category / General Discussion / Re: Salut on: September 17, 2017, 11:29:20 AM
That's a beautiful bike Peter, I hope you can find a good one when the time is right.
8  General Category / Pictures and Videos / Re: Posting photos on: September 16, 2017, 02:50:25 PM
Good point there, I took a look and they do have an app.
Its a little odd getting started, hit the help link and there'll be a login button.... easy from there.

9  Motorcycle Stuff / Honda old 2cyl / Re: 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 16, 2017, 01:13:28 PM
With plans to go through this bike in depth I decided I needed a bike lift or work table of some sort, I'm done building bikes at floor level. After looking around there seemed to be two options.

Option one:


But at 200+ pounds and an iffy reputation, I didn't think I'd like lugging it down to my basement workshop.

Option two was to build some type of wooden work table that would support the right amount of weight but at the same time to not go overboard with weight bearing capacity, maybe a little storage beneath would be nice and casters always make a great addition.
after some consideration and research I decided on one.
http://dropbarscinder.blogspot.com/2011/01/
Theirs looks like this:


And mine came out looking like:

Rock solid with lots of screws and glue holding it together. I added a 6' black vinyl runner to the top for looks function and protection.

Total for this was about $75
10  General Category / Pictures and Videos / Re: Posting photos on: September 16, 2017, 12:38:12 PM
I'm trying out https://cubeupload.com/
it's a donation supported service, you can create an account but an account isn't required to use the service.
embed images the same way we used to with photobu**** but no annoying adds popping up every other second.

CHEERS!

test:



11  Motorcycle Stuff / Honda old 2cyl / 1993 CB250 Nighthawk Basket Case Build (99 Cent Special Mark II) on: September 14, 2017, 10:31:50 PM
I had said I'd make a thread for this build a while back but I wanted to have some idea what direction I wanted to go with it first.
Last fall I picked up a titled basket case 250 Nighthawk with 14K miles on it, it had been stored poorly by its first owner and the second owner tore it apart except the engine which he spray bombed flat black. Compression was good and the title was clean so I plunked down my 200 bucks and loaded it up. He had Bratstyle delusions and hacked off the frame behind the rear shocks, thankfully he kept the back half.

I figured with the rusty spokes and rims that this would be a good place to learn to lace wheels, experiment with rust removal techniques and experiment with diy zinc electroplating techniques. I did plenty of research and sourced the parts I'd need, but then life popped up and the build budget went away. So I came up with the same old plan to build what I can around the parts I have on hand.

SO, the 90's 750 Nighthawk rear wheel, 41mm fork- single disk brake front end, 88 CBR600 front wheel and set of 17" Michelin Pilot Activ tires I had originally planned for my 750K a few years ago were in.  5 minutes of measuring and note taking and it was settled, it could be done.
I've poked around the web but it seems nobody ever bothered to try this one before, so here goes.

I'm drawing inspiration from some scramblers and small bore hooligan bikes like the ducati scramblers of the late 60's

and more modern bikes like the 390 KTM Duke

and some of the custom bikes being built and ridden in southeast asia, I'll upload a few photos of those below.


I'm hoping it turns out more hooligan and less like


I'm gearing it low for more (maybe some) useable torque, I have a set of CB700SC rear shocks (2" taller than stock 250) with 4 way adjustable rebound damping and chromed Progressive springs (rated coincidentally for my weight) from craigslist $20, I picked up an All Balls brand fork rebuild kit for $28, and the other day I picked up a 525 120 link Tsubaki roller chain on clearance for $18 shipped.

Total today $266


I'll post some photos of my progress soon, photobucket work around in progress...



12  General Category / General Discussion / Re: Bumper cars anyone? on: September 14, 2017, 09:11:51 PM
But it is a Honda, did you see that handlebar switchgear?
13  General Category / General Discussion / Re: Bumper cars anyone? on: September 14, 2017, 09:38:36 AM
Yes please!
14  General Category / Pictures and Videos / Re: European Motorcycle Day at Lars Andersen 2017 on: September 13, 2017, 10:26:20 PM
Does this mean that Rice-o-Rama was this weekend too?

Good call Chris, it was Sunday.
photos at their site  http://www.rice-o-rama.com/
15  General Category / General Discussion / Re: Much preferred! on: September 08, 2017, 08:28:46 PM
Safe travels Pete!
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