OzVMX Forum
Marque Remarks => British (BSA, Greeves, Triumph etc) => Topic started by: GMC on August 01, 2010, 10:11:03 pm
-
Hi guys
I have a 73 CCM frame to repair.
Can anyone give me the dimension between the sidecover bolt holes as marked in the picture.
The rear end has been pushed upwards and forward and I need this dimension so I can be sure that I can get it somewhere close to original.
Any close up pictures of the rear shock mounts would be beneficial as well.
This is a 73 frame.
It seems the 74 frames are differnt so won't be much help.
(http://i15.photobucket.com/albums/a393/gmcloa/CCM-frame-1.jpg)
-
Hi GMC
Mine measures 289 mm each side
PM email address and I can email frame photos
Dave
-
Hey GMC
My 73 measures 290. I would be a bit worried about the rear loop as that one looks to sit too angled, if that makes sense.
-
What is the patch at the rear of the oil bearing top tube ?
I can upload some pictures tomorrow of my original 73, or the new frame. I will also measure the two bolt holes.
I would be a little concerned at the strain the rear end has caused on the top tube. The tubes that run down to the swingarm area look bent too.
This is a common problem with the 73's if jumped too hard with shocks that are too long or too hard.
So far mine has survived un-bent, even in the hands of Bob Wright !
-
Geoff
Will PM Photos
Looks like the backbone has had a cut and shut to make more like a later bike
(75 STYLE?)
Cheers
Dave
-
Thanks for your help guys.
Yes the backbone has been cut & shortened in an attempt to update it to the later model. This is why the rear end looks odd as it has been rotated forwards & upwards.
My best guess is that the patch on the backbone was the piece that they cut out of the backbone, having those measurements for those bolt holes will help confirm how much I need to rotate the rear end backwards.
The tubes that run down to the swingarm have been cut & bent forward, as those bolt holes currently measure 242 on this frame.
It shouldn't be too hard to put back, I just need an idea of how the shock mounts should look now, the owner could only find B50 shock mount photo's, while they may be similar it will be good to have it looking right.
-
Will get the tape out when I get home from work Geoff ...
(http://i470.photobucket.com/albums/rr61/grouty60/NewCCMframe.jpg)
-
Many thanks for your help guys, much appreciated.
Grouty, is that a new frame or an old one replated?
Also the chain guide underneath the front of the swingarm is missing. Are these available as a standard type item to buy?
It needs swingarm bearings too.
I imagine the needle rollers will be common place at the bearing supplies but where do you source the hardened sleeves for the rollers to run on?
I sent the owner off to check these out but you guys seem to be in the know.
Can you offer any advice to replace these items?
Cheers,
Geoff
-
Forget about it and build my pipe!!! ;D
-
Geoff ..... see PM :)
-
Can someone tell me the differents between Joe Maxwell 74 ccm frame and Mark Cooks CCM frame, Mark frames look like my b50 frame because the rear loop looks the same, and maxwell frame rear loop looks different which would be the better frame to buy, or just keep it orginal. Has anybody got Tony Clarke Phone Number. To me the CCM frames are a bit special than the b50 frames but there is not much differents between the two, or is there, or is it just weight saving and nice welds. I would like some honest answers.
-
(http://i914.photobucket.com/albums/ac346/albrid-3/bsa1002-1.jpg)
-
So what does a Joe Maxwell frame look like then Dave?
-
http://www.joemaxwell-engineering.com/shop.html
-
There you go Dave
Groutys CCM frame as above is a 73 model
The Maxwell frame as seen in pauls link is a 74 model
-
so what is a mark cooks frame is it also 74 model or 73 , so is it weight that determines the differance.
-
Mark Cook makes many different CCM frames but the frame shown is a 1973 -Very similar to the B50
The 1974 frames are quite diffent at the back .
Having had both a well soted B50 with good suspension and lighter wheels is hard to beat for a race bike
Dave
-
thanks rowdy, l have had a quote off mark cook, for a new frame, and a quote for a complete bike finished, big bucks. has anybody seen the quility of these frames from the two manufacturers. about 200 pounds the differents in price.
GMC, Geoff who is grouty, does he build frames.
-
David
Mark Cook makes great frames and just about any other component to suit CCM including hubs ,and engine components
I have purchased a number of parts and the quality is always top class.Maxwell frames also look good but the finish i(in my opinion ) is not quite CCM quality
Suggest you have a look at B50.org web site plenty og good info Grouty and Mark Cook are regular contributors
Cheers
Dave
-
Will get the tape out when I get home from work Geoff ...
(http://i470.photobucket.com/albums/rr61/grouty60/NewCCMframe.jpg)
Dave, Grouty put up this picture of his Mark Cook 73 frame for me, I thought it was what you were looking at when asking about Mark Cooks frames.
Anyway, you need to stop looking, you will do your dough if you try to turn what you have into a CCM as you will end up selling it beofre you get a chance to ride it.
You will need cases as well as a frame for starters.
Didn't you sell a CCM recently ???
-
jimmy Aims coming to ride in unzud feb next year for ccm meeting
Also Mick Andrews for trials at same meeting
-
bazza, this meeting is going to be in New Zealand, in February, so is going to be a promotion meeting for CCM.
-
David, as Geoff said it is a long haul to build a new one.
The new frame you see pictured is a one off job. I wanted a standard production replica frame, not the later 73 works "SP" type ones. These then evolved into the 74 type frame.
My frame cost a bit more as it was a one off. The frame is really the cheapest part. If you have a B50 to convert then you are on a winner. Mark also builds genuine replica wheels and fork yokes. The side cases will also set you back a bit.
Is it worth doing ? Yes, definatley ! After racing my B50 for years, and then getting on my 73 CCM there was no comparison. The CCM is soooo light and nimble I never wanted to ride the B50 again. So I sold it to a guy in Japan.
I want the replica to race as my original one has just a wee bit of history. To break the frame on that would break my heart, so I had to do something.
-
your right david and as i live there i will be there and even though its only 5 months i wont have sold the Victor gp by then
-
good for you bazza, as l won`t be selling my bsa either. still thinking about buying a new CCM. but l done want to break up my original B50. So l think it will be wise to buy another B50 engine and build a ccm.
-
You can always use the big bits of your B50 until you find a new motor :) Then put the original back together.
You have email David...
I will try and upload some pictures over the weekend.
-
Thanks Grouty, please send me some photo`s looking forward in seeing the bike. got your email. cheers
-
Many thanks to the guys that sent me info to sort this frame out.
(http://i15.photobucket.com/albums/a393/gmcloa/CCM-frame-1.jpg)
(http://i15.photobucket.com/albums/a393/gmcloa/Misc%20bike%20stuff/CCM-frame-repair.jpg)