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Author Topic: 1955 BSA C11G  (Read 7888 times)

Offline dgrady77

  • Posts: 87
1955 BSA C11G
« on: Nov 17, 2010, 23:36:34 »
I started this little project a couple years ago, but hardly had any time to work on it.  Now that I have a little more time, it's coming along nicely.  Most of the details are sort of coming to me as I go, like what kind of handlebars, seat, etc to use.  Right now I'm picturing clubman bars, because it would require the least amount of modification to the forks and I'll probably build my own seat.  I don't know if I'll be able to do rearsets because of the kickstart lever and the shape of the rear part of the frame.  If all else fails, I'll start with the stock footpegs and work on rearsets once I get her running.  I'm definitely open to suggestions, advice, etc. 

Before:





The frame, with a homemade battery box:



and after a little cutting:



removed the side kickstand bracket:



I'm not sure what was welded here, but I filed that off too:





Here are the gas and oil tanks on the frame, just to make myself feel like I'm making some real progress:




Offline Erskine

  • Posts: 1502
Re: 1955 BSA C11G
« Reply #1 on: Nov 18, 2010, 10:47:28 »
Lovely job.
I suppose you could brace rear sets from the bottom to the top of the rear hoop.
Could even be done with clamps if you didn't want to weld on tabs?

Offline dgrady77

  • Posts: 87
Re: 1955 BSA C11G
« Reply #2 on: Nov 19, 2010, 02:05:09 »
Thanks Erskine.  The toolbox is not going back on, so you may be onto something with the rearset idea.  I may even be able to salvage the passenger peg holes for that purpose. 

Offline crazypj

  • Posts: 10489
  • Split personality, I fake being smart
Re: 1955 BSA C11G
« Reply #3 on: Nov 19, 2010, 02:42:48 »
I had one of them, still got most of a C10L somewhere (sidevalve motor)
'you can take my word for it or argue until you find out I'm right'
I gave my girlfriend an orgasm the other night, but, she spat it back at me
Some people die at 25 and arenít buried until 75. óBenjamin Franklin
CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline dgrady77

  • Posts: 87
Re: 1955 BSA C11G
« Reply #4 on: Dec 04, 2010, 03:43:21 »
got the front forks on.  apparently the triple tree was from a c15 and the forks are from an A10.  please ignore the handlebars.  i'll replace them with some clubmans as soon as i get the $$$.






Offline Rocan

  • Posts: 4875
  • "Long after I rest, my steel will live on"
Re: 1955 BSA C11G
« Reply #5 on: Dec 04, 2010, 17:45:57 »
mmm, pretty. hows that rear suspension  :D
PJ- Cafe's don't really work right until you get rolling 70mph +

Honda CB350 Project- www.dotheton.com/forum/index.php?topic=8643.0

Honda C100 Restoration- www.dotheton.com/forum/index.php?topic=38653.0

Offline dgrady77

  • Posts: 87
Re: 1955 BSA C11G
« Reply #6 on: Jan 20, 2011, 17:06:50 »
Thanks Rocan.  The bike wasn't running when I bought it, so I've never actually experienced the plunger suspension.  The springs are nice and, well, springy, though, so we'll see.  I'm putting the motor back together now.  Hopefully I'll be one step (and a couple pics) closer to riding it.

Offline hbc

  • Posts: 730
Re: 1955 BSA C11G
« Reply #7 on: Jan 20, 2011, 17:28:11 »
Looks like a fun build!

Not sure if they are the right size/dimension but I have a brand new set up chrome clubmans I am probably not going to use that I would sell you for super cheap. PM me if you are interested.

http://handlebarcustoms.com/

1980 XS850G Cafe - Build in Progress
http://www.dotheton.com/forum/index.php?topic=60614.0

1980 Suzuki SP400 - Brat project

1980 XS850G Brat/Tracker - Built for my brother
http://www.dotheton.com/forum/index.php?topic=54654.msg617331#msg617331

1979 Kawasaki KZ400 (dirty bird) Scrambler - Sold :(
http://www.dotheton.com/forum/index.php?topic=52718.new#new

Offline bikeboy

  • Posts: 1120
    • a cb900 tragic
Re: 1955 BSA C11G
« Reply #8 on: Jan 20, 2011, 18:09:31 »
now this is an interesting build. Look forward to updates  ;)

cheers
ian

Offline Erskine

  • Posts: 1502
Re: 1955 BSA C11G
« Reply #9 on: Jan 20, 2011, 18:24:57 »
Yeah what's occurring?
 ;)

Offline IndieSol

  • Posts: 1367
  • "This one goes to eleven." -Nigel Tufnel
    • Project: Pariah
Re: 1955 BSA C11G
« Reply #10 on: Jan 20, 2011, 18:32:09 »
Looks like a fun build, and it also appears you're sitting on some nice property.  I'm insanely jealous.

I'll have nothing to add, as I know nothing about these bikes, but I'll be watching.  Nice work so far.
BMW R100
XT350
CJ360 Cafe Project

Project: Pariah

Offline dgrady77

  • Posts: 87
Re: 1955 BSA C11G
« Reply #11 on: Jan 21, 2011, 04:58:07 »
Thanks for the comments.  Work has been slow, with a lot of waiting on parts.  I finally gave up on finding obscure sizes of metric nuts and bolts and instead bought some obscure sized taps and dies.  Who would have thought M10 x 1.0 would be so hard to find?  Anyway, I should be able to put most of the motor back together pretty soon.  I'm still looking for an auto advance/contact breaker too.  Thought I had one, but I guess someone else beat me to it. 

treitz - pm sent

IndieSol - thanks, the property is family land. 

Offline dgrady77

  • Posts: 87
Re: 1955 BSA C11G
« Reply #12 on: Jan 28, 2011, 19:56:41 »
As I said in my last post, I've been working on the motor.  I got most of it put back together, but I still need a few parts.
 
I made my own cylinder studs, as the M10x1.0 and M8x1.0 studs are not all that common in the US:

 by d_brannick, on Flickr

 by d_brannick, on Flickr

 by d_brannick, on Flickr
 
The crankcase and newly refurbished piston:

 by d_brannick, on Flickr
 
With the cylinder barrel:

 by d_brannick, on Flickr
 
And with the cylinder head:

 by d_brannick, on Flickr
 
The black paint is bbq grill paint, because I couldn't find proper engine block paint when I was ready to do the painting.  I think the heat rating is going to be okay, but I guess there's only one way to find out.

Offline Rocan

  • Posts: 4875
  • "Long after I rest, my steel will live on"
Re: 1955 BSA C11G
« Reply #13 on: Jan 29, 2011, 18:55:27 »
awesome man! looks great.
PJ- Cafe's don't really work right until you get rolling 70mph +

Honda CB350 Project- www.dotheton.com/forum/index.php?topic=8643.0

Honda C100 Restoration- www.dotheton.com/forum/index.php?topic=38653.0

Offline teazer

  • Site Supporter
  • *
  • Posts: 6562
Re: 1955 BSA C11G
« Reply #14 on: Jan 29, 2011, 22:09:12 »
Fortunately the performance is unlikley to overwhelm the puny rear suspension.  Plungers were never great but they are really interesting.

I'm sure you already know this but there were zero metric threads on that bike when it was made.  They were a mix of BSF, BSW and Cycle threads (26 tpi IIRC). 

They are a fun, if rather slow, bike.  Not sure if they would ever make a cafe racer, but they are old and have a ton of character.

It's looking good so far.