I would like to convert my vespa VBB to a front disc brake.
may some one please tell me if I purchase the following from S.I.P below will I have trouble fitting it together.
steering columns from SIP
Grimeca disc kit from SIP
bitubo gas shock from sip
can you post a picture ?
-- Let me tell you something about my expirience regarding bitubo and discbrake --
I know that if you mount a new brake with a new shock sometimes the thickness of the paint is to much.
If it´s like this you could modify a little bit to mount easily. Also the 2 holes have to be open a little bit. Round about a half millimeter.
I´m shure that your old shock will fit without problems with the brake disc.
Did you also purchased the special screw for mounting a bitubo with diskbrake ?
Hi appreciate the reply
thickness of paint is fine the bitubo slides into place.
My old shock is not compatible, it came from a drum brake and the motorcycle is a VBB
I will provide a picture shortly, it looks like about 3 to 4 millimetre if I line up the top hole and have to adjust the lower hole. It just looks like a total mismatch
I did not purchase the special screw. Is this the screw for mounting the brake calliper so then it does not rub against the shock ?
Our inhouse technician posted a detailed description of the conversion in another part of this forum:
All the necessary parts are listed there, the additional information is in German however. Maybe this helps a little, if you need more information you can call our hotline and speak directly with our tech-wiz.
Hi thanks for the reply guys, I have recieved my parts and have come across a major problem, the mounting holes on my gas bitubo shock does not align with the holes on the Grimeca Caliper plate. Any help would be appreciated.
I converted my 1965 VBB 2T front forks (non Disc) to 10" px 20mm spindle type fork kit from sip and put a Bitubo gas shock on, not a straight forward bolt on ! but if you want photos or help post your email and i will try to help,
Hey Paul I will eventually get my picture up of the problem I am having but if you can post me your pictures of the mods you made to the shock would be appreciated, [email protected]