I'm in the process of re painting my 3C frame and need to get some feedback. On the bracket around the headstock I have a hole above the rod holding the petrol tank bung (see picture) and its the same both sides. Why are they there..?...they are both slightly oval, should they be round ...and...should they be there at all and if not any ideas on why they are there. Picture 2 is of the triangle tubing of the frame where my rear sets are positioned on the left hand side, there is a hole all the way through the top tube that has been plugged, any ideas on what has happened there in the past. Thanks for looking.
3C frame question
- Thread starter ginga
- Start date
Rusty Spokes
Hero member
- Location
- Decatur, Ga. USA
Just checked my 3C frame #2057...no holes in the headstock bracing and no sign of a hole/plug in the rear footrest supports. A mystery.
P
Paddy
Guest
Classic case of woodworm.
My guess is someone moved the rod for the tank rubbers to fit an aftermarket tank at some stage ?
My guess is someone moved the rod for the tank rubbers to fit an aftermarket tank at some stage ?
laverdakeith
Hero member
Not sure about the footrest hanger but I got a '76 3cl here with the same holes at the headstock.
Keith
Keith
paparracas
Full member
- Location
- Andaluc?a-Espa?a
Brake lever shaft in rear footrest supports. 
H
Harry Lime
Guest
I'm guessing, but I briefly had a Crossbow fairing mounted on my triple back in the 80s. The Crossbow supplied fairing mounting had a pair of "hooks" arrangement.
This sort ofcrap thing.
(I had a proper mounting made up).
But it's probably the remains of attempts to mount a 3rd party fairing.
H.
This sort of
(I had a proper mounting made up).
But it's probably the remains of attempts to mount a 3rd party fairing.
H.
breganzane
Hero member
- Location
- NSW Australia
My guess would be fairing bracket holes and perhaps a luggage rack mount hole? Both added by enthusiastic owners over the years and I would fill them. But that's just a guess.
chrisk
Hero member
- Location
- Brisbane, Australia
Reckon Harry and Steve are on the money about the fairing mount. The other hole has me baffled, especially considering it's only on the left side.
Dellortoman
Hero member
- Location
- Tasmania, Australia
Headstock holes for a fairing mount was my first thought, because I'd considered doing that to my Jota. The footrest bracket is a bit of a mystery.
Before you paint the frame. It's worth considering the addition of the usual bracing webs around the headstock.
Before you paint the frame. It's worth considering the addition of the usual bracing webs around the headstock.
ginga said:
Something like this:
Where are you based? Here in Queensland most send their bikes to Dave Kellett at Kellett Motorcycle Engineering. That is where this work was done on Bevelman's race bike - http://www.laverdaforum.com/forum/index.php/topic,89896.30.html
Dellortoman
Hero member
- Location
- Tasmania, Australia
Hi ginga
It became evident fairly early on that the 1000 triple frames were prone to fatigue cracking around the steering head. Ask anyone who works on these bikes regularly and they'll tell you it's very common on un-braced frames - as yours is.
I'm not sure of the history around the frame bracing saga, as to whether the factory started upgrading the frames or whether it was left to owners and service agents. But steering head bracing plates are available from suppliers like Wolfgang Haerter and Andy Wagner https://www.laverda-paradies.de/shop-1000-52-en.html.
Conventional wisdom was to weld the extra gussets in the area between the top tube, steering head and the lower horizontal tubes above the engine. These are the plates in the link above.
Rather than spend money buying a couple of bits of steel plate from the likes of AW at inflated prices, most owners do their own thing these days. Several variants on the bracing idea have evolved, and all seem to work well enough. You'll find a few of them in this thread http://www.laverdaforum.com/forum/index.php/topic,89411.0.html
Since you have a bare frame that's going to be painted, then now would be the ideal time to weld in a bit of steering head bracing. Especially if you intend to ride the bike in a "spirited" manner.
Cheers,
Cam
It became evident fairly early on that the 1000 triple frames were prone to fatigue cracking around the steering head. Ask anyone who works on these bikes regularly and they'll tell you it's very common on un-braced frames - as yours is.
I'm not sure of the history around the frame bracing saga, as to whether the factory started upgrading the frames or whether it was left to owners and service agents. But steering head bracing plates are available from suppliers like Wolfgang Haerter and Andy Wagner https://www.laverda-paradies.de/shop-1000-52-en.html.
Conventional wisdom was to weld the extra gussets in the area between the top tube, steering head and the lower horizontal tubes above the engine. These are the plates in the link above.
Rather than spend money buying a couple of bits of steel plate from the likes of AW at inflated prices, most owners do their own thing these days. Several variants on the bracing idea have evolved, and all seem to work well enough. You'll find a few of them in this thread http://www.laverdaforum.com/forum/index.php/topic,89411.0.html
Since you have a bare frame that's going to be painted, then now would be the ideal time to weld in a bit of steering head bracing. Especially if you intend to ride the bike in a "spirited" manner.
Cheers,
Cam
Golden Panda - Thanks, I'm in the Midlands, UK although I try and pop down under to visit old friends once a year and one of them lives in Currumbin Waters which is down the road in Aussie language but a weeks road trip to us Brits.
Dellortoman - I don't race it but it gets used, had a nice trip from London to Bratislava a couple of years ago. Apart from the strengthening plate you have mentioned are there any other areas that you would recommend or is this one the most common area that is worked on.
Dellortoman - I don't race it but it gets used, had a nice trip from London to Bratislava a couple of years ago. Apart from the strengthening plate you have mentioned are there any other areas that you would recommend or is this one the most common area that is worked on.
Dellortoman
Hero member
- Location
- Tasmania, Australia
I don't think any other areas of the frame are prone to cracking. But some folks like to beef up other bits of the frame for reasons of stiffening and improved handling. Check out Steve B's frame mods on his RGA http://www.breganzane.com/rebuilds/rga/rga_phase1.php
I did my some bracing somewhat similar to Steve's on an RGS frame that I'm currently building into a track bike.
I did my some bracing somewhat similar to Steve's on an RGS frame that I'm currently building into a track bike.