B44 on the cheap!

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koncretekid
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B44 on the cheap!

Post by koncretekid » Sun Nov 10, 2019 1:44 am

So I had this B44 motor that came with a bunch of parts including 2 frames, this motor plus enough to make another one (almost), a B44SS gas tank and oil tank (fiberglass), several wheels, and a barrel of miscellaneous junk (literally a barrel of parts). I had sold B44SS frame and matching cases, front end and tanks, but ended up with this motor which was supposed to have been rebuilt, apparently in the last century:
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I decided to rebuild it again, including the crankshaft which I disassembled and sent to Ed Valiket who hones the rod and supplies oversize rollers.
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When it comes back and with a bit of polishing, it looks like this:

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And with some new main bearings and transmission bearings, etc. it finally looks OK:

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Re: B44 on the cheap!

Post by koncretekid » Sun Nov 10, 2019 2:07 am

The barrel of parts and one of the hubs combined to make a nice QD wheel when spoked up to a Borrani rim I had purchased years ago on ebay, because no one wanted it with holes in the shoulders for motocross work. I did not know what it would fit, but it spoked up perfectly with some old spokes I had. SS spoke would have been nice, but this was to be a parts-off-the-shelf bike. Someone wanted to know what it weighed, I took this photo on the bathroom scales:

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The frame is a 1970 B25 but it was brown with rust. A couple of hours of sandblasting and some 2-part frame paint fixed it up pretty nicely.

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Fitting the wheel to the frame with a couple of old Girlings, I think from a Norton Commando, was a good start:

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Re: B44 on the cheap!

Post by koncretekid » Sun Nov 10, 2019 2:29 am

I had a nice set of OIF forks from a T or MX B50 or B25, the type with the matt as cast finish that were fitted to the B25 frame by making bushings to use the OIF tapered roller bearings:

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A close up of the top bushing/bearing shows I did not make the cups quite deep enough to completely enclose the seals. But after a half day of machining, I decided to let it ride for now until I have another suitable piece of material, aluminum next time, to redo them.

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I also had an 8" full width hub, axle, and a SLS brake plate with the "keyway" type brake stay. I machined the head of a 3/8" bolt to fit the keyway and with a couple of washers, it looks like it will work fine for the kind of work this bike will be doing (jigging around the countryside and maybe the cow pastures.)

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Mounted on the forks, it looks like this:

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Re: B44 on the cheap!

Post by koncretekid » Sun Nov 10, 2019 2:43 am

I decided to go with an old school black theme so painted the triple clamps and the sliders black to match the frame. Installed the motor as well.

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I also had a Weimer (sp?) front rim, probably from a BMW, which nicely spoked up the 8" BSA hub.

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Which brings the project up to date:

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Tom
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Re: B44 on the cheap!

Post by Pelle » Sun Nov 10, 2019 9:44 pm

Some day I will probably try a OIF fork on my WD B40, so I'm watching and learning.

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Re: B44 on the cheap!

Post by koncretekid » Mon Nov 11, 2019 2:38 am

I made my own adapters because I already had the bearings for the OIF frame. But BSA Unit Singles (see above) has the proper adapters with the bearings here:

https://www.bsaunitsingles.com/item.wws ... SRMB44-OIF

They are SRM I believe, but I had thought they no longer made them.

Tom
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Re: B44 on the cheap!

Post by koncretekid » Wed Nov 13, 2019 9:10 pm

Double posting due to internet problems.

Tom
Last edited by koncretekid on Wed Nov 13, 2019 9:16 pm, edited 1 time in total.
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Re: B44 on the cheap!

Post by koncretekid » Wed Nov 13, 2019 9:13 pm

We had some unusually warm weather for a couple of days so I sandblasted, sanded, "Bondo'd" a TRT25 OIF steel tank I had and painted it this morning with some paint leftover from the Bridgestone 350 project. Other than a few sags in the metalflake, it came out looking very good. I'm still trying to decide of a paint scheme.

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Meanwhile I'm thinking I'll splurge for a short trials type seat to get the look I want.

Tom
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Re: B44 on the cheap!

Post by beat » Wed Nov 13, 2019 9:32 pm

:thumb :thumb :thumb

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Re: B44 on the cheap!

Post by ringding » Wed Nov 13, 2019 10:53 pm

Excellent!! :thumb
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Re: B44 on the cheap!

Post by B44Claus » Thu Nov 14, 2019 12:11 am

Looks super cool!

brgds,
Claus
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Re: B44 on the cheap!

Post by koncretekid » Mon Dec 02, 2019 1:57 pm

I got busy with the paint gun and added a bit of color. Just need to decide which BSA logo to use on the tank.

New seat is coming from England - - hope I don't have to wait for Brexit to get it!

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Tom
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Re: B44 on the cheap!

Post by Barry Creary » Mon Dec 02, 2019 6:50 pm

Very nice Tom :thumb :thumb

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Re: B44 on the cheap!

Post by Ian Hingley » Tue Dec 03, 2019 9:51 pm

We'll do a great trade deal with Canada, Tom.

So they tell us anyway...

Cheers

Ian
66 BSA Victor Enduro, 72 BSA Lightning, 62 BSA B40 trials, 89 H*nda Bros 650, 96 Aprilia Moto 6.5, 2000 Aprilia Moto 6.5

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