69 BSA bobber project...or...the cure for wintertime madness!

[anonny]

Looks like an oil pressure sensor.

Nice job.... love the muffin tin idea.

Originally Posted by YZman

Next question...What is this rusty brown thing?

[sidetrack one]

Looks like a corroded oil pressure sender unit for your oil light!
Enjoying the build!

Beat me by a keystroke, anonny!!

[Mats]

It might be a burnt little muffin left over from a previous rebuild!?

[YZman]

Oil pressure sending unit. That would make sence. Not so sure that I will be running one so that might just get plugged. The wireing harness is a disaster. Might just make my own eliminating what I dont need. Seeing as I am going to be going to a Boyer Ignition and minimalist running equipment a lot of the stock harness wont be used. But thats another day.

[YZman]

Ive got another question. In pulling the tranny out I discovered its a 4 speed. I probably should of known that but I didn't. Not that its a problem. Just never knew what it had in it.

I ran the tranny thru its gears. Everything seems to work fine. Kinda cool watching the shift forks slide the gears around to give you the diff ratios.

My question is (see photo below)



Red = 1st gear
Blue = 2nd gear
Yellow = 3rd gear
Orange = 4th gear

And

Green = Nuetral

It looks like the shift pattern is fairly normal. From nuetral shift down for 1st. Then up for 2nd, up for 3rd and up for 4th.

Now what kinda puzzles me is nuetral. On most modern bikes I have torn into there is an actual detent between 1st and 2nd. See this picture of a normal 6 speed shift star. The Green is where the nuetral detent is.



This BSA tranny dosn't seem to have a nuetral detent. How do you know when your in nuetral? It would apear that you almost have to go by "feel" to find nuetral.

[YZman]

I think I just answered my own question. Check this out



Those notches are like the shift star.

This part that Blood refered to as the Tranny wiener must ride in those and give you the "detent" feeling as you shift



Now Im going to have to locate that part as I dont remember seeing it as I took the tranny out. Hopefully its still in the case otherwise its in the bottom of the parts washer. I hope.

[YZman]

Found it. At least in my picture I did. Hopefully its still in there. Its the thing circled in red





If ya havent figured out by now I like knowing how things work. Im an engineer by trade so understanding how things work, even if its just a basic understanding is kinda etched into my programing.

[c.herman126]

Perfect name for that part! YZman-great work on this teardown/rebuild!

[YZman]

Found my tranny weiner...It was in the engine case still

[crazydrummerdude]

Originally Posted by YZman

the Tranny wiener

I miss that little scamp.. Hope he can update his thread soon.

[YZman]

Originally Posted by crazydrummerdude

I miss that little scamp.. Hope he can update his thread soon.

Yea cuz he is going to have to start picking up the slack from me because my progress is about to come to a screeching hault as the next step for me involves an infusion of around $300 that I dont have.

I have to buy a set of pistons, have the crank ballanced, and buy a cam. Pistons run around $100. Crank Ballancing should be around $100 (Im converting from a 500cc to a 650cc so the crank needs to be re-ballanced for the heavier 650 pistons). My guy has a used 650 cam that I think I can get for around $35 (500 and 650 cams are diff). I am hoping all my bearings are still good otherwise that will cost me more $$. hes going to check that all out when he gets the crank. Oh and I need a sludge trap allen head plug also.

So Im guessing that is going to cost me at least $300. Then I can put the crank back in with fresh seals that I have and button the bottom end back up.

Then the next step is to get the cylinders bored for the oversized pistons, around $50. Oh and I need some 650 pushrods thats another $20. Once I have that I can button up the top end. That is, assuming my head is good. I havent even looked at that. I still need to tear the head apart, have the head and cylinder media blasted and panted. Then put the head back together. Hopefully I can get away with just a valve lapping and new valve seals and be done with it. But we will see.

Then comes the clutch plates and drive chain. Probably around $150.

Then comes the ignition. I dont even know where I am going with that other than its going to be Boyer. I have some research to do on that one. I think the ignition goes for like $150-175. I can use my stock coils and I think stock alternator. And I might be able to eliminate the battery to boot. well see. I have a lot to learn about all that yet. Thats waaaay down the road. Lots of $ has to be spent before I get anywhere near that.



So I guess its time to start ebaying off lots of stuff I have laying around to try and rummage up some spare jingle. I have spare cash. But if it comes to spending the weekend in the woods on the dirtbike or in the garage with the BSA....sorry fellas...the woods calls to me. It will snow eventually and Ill be back in the garage with spare funds to play with

[jeep44]

My '69 Lightning is pretty much on hold until a new wiring harness makes it's way from England sometime next month. I put new tires on it,and I've been polishing a bit,but the pace of my restoration can best be described as "leisurely"

[Bloodweiser]

Originally Posted by crazydrummerdude

I miss that little scamp.. Hope he can update his thread soon.

I'm still alive ! It has been a dark and busy few months. I'm almost out - last week of classes, finals next week. I think I might make it

I did have some time here and there, not a lot of work on the bsa - but my goose got worked over pretty good. Time was so tight though, couldn't snap even one pic. Just got back from a ~400mi trip this weekend and she's singing stronger than ever.


YZMAN - i've got an allen sludge trap plug for you. PM me your addy

[YZman]

I think I found a piece of bling I MUST have. Only $50.

[Brian y]

Nice thread man.... didn't expect to see you over here in the vintage stuff. Good work.

Brian