Well done Adrian,
I hope that I haven't been responsible for diverting you from important things like looking after your friends and family, decorating the house etc etc and instead to play around with 60 year old machinery!
I have added LS18407 to the list. Sounds like you have saved another old Seagull.
I look foward to seeing a photo in due course.
Jeremy
Introduction of the LS
Moderators: John@sos, charlesp, Charles uk, RickUK, Petergalileo
-
headdownarseup
- Posts: 2484
- Joined: Thu Apr 04, 2013 2:26 pm
- Location: bristol
Re: Introduction of the LS
hi all.
going back to a slightly earlier post on this subject re water pump housings i'm not entirely convinced that the LS changed its drive tube attachment to pump housing i.e with the pinch bolt being at the front/leading edge of the gearbox to start with and then in later years the pinch bolt moving to the rear.
as a rough guesstimate, LS production ceased in the mid to late 50's as SJP came along, right, well SJP has the earlier style attachment on the pump housing.
my own SJP (circa 1961) has the earlier attachment on the pump housing, so it would only seem correct that for LS of all ages to have the same.
attachment at the upper part of the drive tube going into the crackcase should be with the larger clamp arrangement as on earlier FV's etc
my own LS (again a later model) has the earlier pinch bolt attachment i.e on the leading edge of the box and not in between the 2 down tubes
from my own observations at least, the later style pinch bolt arrangement on most seagulls both 40 and 100 didnt start until the mid 60's. pretty much the same for 102's as well.
i think that if anyone comes across an LS in the future and looks at the gearbox pump housing and sees the pinch bolt in between the 2 tubes, it's more than likely been "got at" just to keep it going in the past. of course it does'nt make any difference to how the motor is going to perform wether its got early or late style pump housing because they are basically the same part, although the casting on the early pump housing is slightly taller then the later ones.
i'll put up some pics later and show you
jon
going back to a slightly earlier post on this subject re water pump housings i'm not entirely convinced that the LS changed its drive tube attachment to pump housing i.e with the pinch bolt being at the front/leading edge of the gearbox to start with and then in later years the pinch bolt moving to the rear.
as a rough guesstimate, LS production ceased in the mid to late 50's as SJP came along, right, well SJP has the earlier style attachment on the pump housing.
my own SJP (circa 1961) has the earlier attachment on the pump housing, so it would only seem correct that for LS of all ages to have the same.
attachment at the upper part of the drive tube going into the crackcase should be with the larger clamp arrangement as on earlier FV's etc
my own LS (again a later model) has the earlier pinch bolt attachment i.e on the leading edge of the box and not in between the 2 down tubes
from my own observations at least, the later style pinch bolt arrangement on most seagulls both 40 and 100 didnt start until the mid 60's. pretty much the same for 102's as well.
i think that if anyone comes across an LS in the future and looks at the gearbox pump housing and sees the pinch bolt in between the 2 tubes, it's more than likely been "got at" just to keep it going in the past. of course it does'nt make any difference to how the motor is going to perform wether its got early or late style pump housing because they are basically the same part, although the casting on the early pump housing is slightly taller then the later ones.
i'll put up some pics later and show you
jon
Re: Introduction of the LS
Jon.
I think the change discussed previously for the attachment of the drive shaft tube to the pump housing on the LS was the change from a screwed in attachment to a pinch bolt attachment.
Yes, I expect the pinch bolt was on the leading edge (like early SJM/SJP).
Jeremy
I think the change discussed previously for the attachment of the drive shaft tube to the pump housing on the LS was the change from a screwed in attachment to a pinch bolt attachment.
Yes, I expect the pinch bolt was on the leading edge (like early SJM/SJP).
Jeremy
-
headdownarseup
- Posts: 2484
- Joined: Thu Apr 04, 2013 2:26 pm
- Location: bristol
Re: Introduction of the LS
ok
just has a squiz at the main site and YES, sorry keith i take it back.
looking at the advert (which is dated at november 1954) it does show "early LS" at least showing the screwed in drive tube on the schematic drawing.
so for at least the first 2 years of production, the drive tubes were indeed screw in fitting.
HOWEVER, i do believe from 55 onwards (maybe a little later) the tube attachment was by earlier pinch bolt type up till 67 or thereabouts.
jon
just has a squiz at the main site and YES, sorry keith i take it back.
looking at the advert (which is dated at november 1954) it does show "early LS" at least showing the screwed in drive tube on the schematic drawing.
so for at least the first 2 years of production, the drive tubes were indeed screw in fitting.
HOWEVER, i do believe from 55 onwards (maybe a little later) the tube attachment was by earlier pinch bolt type up till 67 or thereabouts.
jon
-
Adrian Dale
- Posts: 758
- Joined: Wed Apr 16, 2014 7:58 am
- Location: Tasmania, Australia
-
Adrian Dale
- Posts: 758
- Joined: Wed Apr 16, 2014 7:58 am
- Location: Tasmania, Australia
Re: Introduction of the LS
On the subject of the drive shaft attachment, re the photo just posted, it can be seen on LS 18407 circ 1954/55 has a screw in attachment so the change to the pinch bolt must have been later than this date range... 55/56?
-
Adrian Dale
- Posts: 758
- Joined: Wed Apr 16, 2014 7:58 am
- Location: Tasmania, Australia