Author Topic: Identify this swingarm? (Read 4598 times)

cbr954 · « **on:** December 17, 2014, 05:18:13 pm »

Can anyone identify this swingarm? I think it is a RC but I cant find any marks or anything on it.

seanbarney41 · « **Reply #1 on:** December 17, 2014, 05:30:21 pm »

If it is stock cb750 length and width, it looks like Dunstall with modified shock mounts.

cbr954 · « **Reply #2 on:** December 17, 2014, 05:35:13 pm »

It is longer then stock but I dont have a stock one here at the moment to measure how much exactly.

Jim F · « **Reply #3 on:** December 17, 2014, 07:15:31 pm »

or a dresda

754 · « **Reply #4 on:** December 17, 2014, 07:34:12 pm »

I doubt Dresda or Dunstall had choice of 3 different lengths.
I think RC but have to look at a catalog.
There was also IEL making swingarms back in the day..

754 · « **Reply #5 on:** December 17, 2014, 07:40:01 pm »

Just checked looks like RC.. Can I have it?

cbr954 · « **Reply #6 on:** December 17, 2014, 07:55:42 pm »

I thought it was RC but didn't know for sure. I may end up using it on one of the dragbikes I am trying to get together for next spring.

SOHC4 Cafe Racer Fan · « **Reply #7 on:** December 20, 2014, 07:40:43 pm »

Does NOT look like a Dresda. I've never seen one with a curved bracing bar.

Bill/BentON Racing · « **Reply #8 on:** December 20, 2014, 08:07:44 pm »

Looks like an RC, like on Samauto, Bill

Sam Green Racing · « **Reply #9 on:** December 21, 2014, 09:24:03 am »

If the curved bracing bar is of oval section tube, then like Billy says....RC.

Sam.

cbr954 · « **Reply #10 on:** December 21, 2014, 12:06:19 pm »

The curved tube appears to be round not oval. Looks like RC piece from a picture I found but have not found any numbers or markings of any kind. Just trying to figure out if I have another RC piece to add to the collection lol. The motor had a fair amount of RC parts in it so thinking someone had fun with an RC catalog back in the day.

Sam Green Racing · « **Reply #11 on:** December 21, 2014, 11:33:36 pm »

I'm almost certain it was oval but could be wrong, it was a few years ago.
You can find pics of it on this page. http://forums.sohc4.net/index.php?topic=61876.100#top
What bike/frame is it going on, if it's RC, they don't fit all frames.

Sam.

cbr954 · « **Reply #12 on:** December 22, 2014, 04:20:21 am »

Thanks for the link Sam it looks identical to yours.

Sam Green Racing · « **Reply #13 on:** December 22, 2014, 11:58:39 am »

What bike/frame is it going on? if it's RC, they don't fit all frames.

Sam.

cbr954 · « **Reply #14 on:** December 22, 2014, 01:55:14 pm »

Its in a 73 frame. It was on this frame originally just not sure if I am going to use this frame/swingarm combo yet.

HB-1fan · « **Reply #15 on:** December 22, 2014, 03:04:33 pm »

I was told this might be an rc swingarm. I will check when home for the holidays. Not sure about the brace but will look.
Bike was raced and daily driven in the 80's, 90's by p.o. He said he would ride it to track with struts and wheelie bar strapped to the back rest. 890 cc with R.C. rods,

btw, not me in pic. My bf Thad.
HB

BPellerine · « **Reply #16 on:** December 22, 2014, 03:44:53 pm »

Quote from: Sam Green Racing on December 21, 2014, 11:33:36 pm

I'm almost certain it was oval but could be wrong, it was a few years ago.
You can find pics of it on this page. http://forums.sohc4.net/index.php?topic=61876.100#top
What bike/frame is it going on, if it's RC, they don't fit all frames.

Sam.

why not??

754 · « **Reply #17 on:** December 22, 2014, 07:06:49 pm »

Keep me in many nd if you or anyone has one for sale.
Anyone know if there were offered in paint, and Nickle plated?

Sam Green Racing · « **Reply #18 on:** December 23, 2014, 01:49:02 am »

Quote from: BPellerine on December 22, 2014, 03:44:53 pm

Quote from: Sam Green Racing on December 21, 2014, 11:33:36 pm
I'm almost certain it was oval but could be wrong, it was a few years ago.
You can find pics of it on this page. http://forums.sohc4.net/index.php?topic=61876.100#top
What bike/frame is it going on, if it's RC, they don't fit all frames.

Sam.
why not??

Because the arm was made for the frame of the day, that being the K models.
The Auto and F models had different chain and shock alignment.

Sam.

Sam Green Racing · « **Reply #19 on:** December 23, 2014, 02:01:13 am »

Here is the RC K swinger mated up to the A frame. It works when using struts as there is no movement but imagine shocks trying to go up and down when they are on different alignment. Take a look at the angle of the left strut and the spacers behind the rear sprocket to get the correct chain run.

Sam.

Bill/BentON Racing · « **Reply #20 on:** December 23, 2014, 05:16:32 am »

Looks like an RC to me, Bill

BPellerine · « **Reply #21 on:** December 23, 2014, 10:55:07 am »

Quote from: Sam Green Racing on December 23, 2014, 02:01:13 am

Here is the RC K swinger mated up to the A frame. It works when using struts as there is no movement but imagine shocks trying to go up and down when they are on different alignment. Take a look at the angle of the left strut and the spacers behind the rear sprocket to get the correct chain run.

Sam.

thanks so all k models ok?mine is a 78 k and going to fit a clubfoot.bill

Sam Green Racing · « **Reply #22 on:** December 23, 2014, 11:09:02 am »

I'm not sure about the late K Bill. Easy to check out though.
Measure the stub sticking out from the frame behind the top of the left rear shock.
It it's longer than the other side, then it's the same as the Auto and later Fs.

Sam.

cbr954 · « **Reply #23 on:** December 24, 2014, 05:52:30 am »

There is a RC swingarm on ebay supposedly for the F frame. http://www.ebay.com/itm/Honda-CB750-F2-drag-racing-swing-arm-RC-Engineering-special-/261708806112?pt=Motorcycles_Parts_Accessories&hash=item3cef0f77e0&vxp=mtr

jaguar · « **Reply #24 on:** December 24, 2014, 06:53:25 am »

Yeah, that one came off his bike. I assume he sold the motor and now is parting out the frame.
Has the stay for the stock rear caliper.

The one in the first picture has the stay for the stock rear drum, so I assume that it came off of a K bike.
I haven't seen one pop up for sale in a while. I have been looking for one, been collecting some drag parts for a while now.

Will be interesting to see what the one on eBay sells for.
Is the K one in the original post for sale?

News:

Author Topic: Identify this swingarm? (Read 4598 times)