[TCed]

http://www.triumphrat.net/memberalbums/data/1902/medium/seatrail_mid71on.jpg

http://www.triumphrat.net/memberalbums/data/1902/medium/seatrail_early_1971.jpg

Here's the difference in frame sizes for a OIF Triumph/BSA. The only difference is in the height of the forward portion of the seat rail. The performance difference is more myth than fact.
ed

 

[swansea7070]

Thanx to all that has posted

 

[gabow1815]

hi all new on here in looking to build a cafe racer somthing like triumph but not sure wat bike to start with any advice would b great plz

I have a 650 bonnie, waste of time, it would'nt get to Cardiff let alone the Ace. This summer I started on my Daytona 955i . Better m/c altogether and nearly caffed, main problem is the electrics, bit fiddly but with some research can be sorted. If doing it on a budget the more sportier looking bike the less sawing and welding to do. Any way good luck just do it one part at a time that way you have a fairly complete bike that looks something, not a pile of bits on the shed floor that dishartens you. I live in Crofty if your passing drop in, Gabow.

 

[swansea7070]

Ok many thanx Daytona 955i must of cost a bit

- - - Updated - - -

Ok many thanx Daytona 955i must of cost a bit

 

[swansea7070]

Are u selling bonnie

 

[gabow1815]

Hi 7070, I bought the Daytona 2006, but several winters have taken their toll so I decided to caff it. I use my 1050 speed 3 for work now. If that goes wonkey I use the 600cbr rr. Good luck on your prog. just remember it all takes time don't cut corners u got to ride it.

 

[crazypj]

I have a 650 bonnie, waste of time, it would'nt get to Cardiff let alone the Ace. This summer I started on my Daytona 955i . Better m/c altogether and nearly caffed, main problem is the electrics, bit fiddly but with some research can be sorted. If doing it on a budget the more sportier looking bike the less sawing and welding to do. Any way good luck just do it one part at a time that way you have a fairly complete bike that looks something, not a pile of bits on the shed floor that dishartens you. I live in Crofty if your passing drop in, Gabow.

You need to put it together properly.
Friend of mine raced a 650 Bonnie, and rode it all over the place.
It ran great until he tried to fit a Weslake 8 valve head (don't think it ever got put back together)
Much better computer programmer than mechanic

 

[gabow1815]

I think the Weslake head had more studs than the standard Bonnie head. They were crap too, to much for the bottom end. Just bought a Triumph ST 955i, that's 4 trumpets now... need bigger shed.

 

[crazypj]

Doesn't really matter if it's 8, 9 or 10 stud, you only drill and tap a hole in the top of block
Bottom end usually fails because of too many RPM's, crank flexes too much and takes out timing side bearing then you lose oil pressure