Page 2 of 3
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 1:59 pm
by Adam_Winstone
I bought one that had a substituted 3rd gear, which no longer provided the nice close ratio jump and had either been substituted as a result of breakage.... or the fear of breakage.
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 2:16 pm
by bristolmod
as an aside, I believe (but stand to be corrected) that early LI150 Specials were indeed nicknamed "Pacemakers" in GB (with "weak" and later stronger 3rd gears), and that the later LI150 Specials did in fact have SX150 engines fitted as standard in the factory.
Thats what the Lambretta Manual of Performance Tuning and Conversions implies in the Gear Ratio Section (page 54) anyway.
Anyone know for sure?
Chris
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 2:22 pm
by alanscottj
Adam_Winstone wrote:I bought one that had a substituted 3rd gear, which no longer provided the nice close ratio jump and had either been substituted as a result of breakage.... or the fear of breakage.
What would/could you use to substitute the 'weak' 3rd gear cog? From which model?
Thanks
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 2:45 pm
by Mr G in NYC
Stuck one in my Targa Twin Engine GP . Austria Euro and back to London last month . No issues . G.
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 5:13 pm
by Adam_Winstone
alanscottj wrote:Adam_Winstone wrote:I bought one that had a substituted 3rd gear, which no longer provided the nice close ratio jump and had either been substituted as a result of breakage.... or the fear of breakage.
What would/could you use to substitute the 'weak' 3rd gear cog? From which model?
Thanks
I'll have to have a look but I seem to remember that it was one of the LIs (125 or 150). It meshed ok but lost the nice ratio of the 150S box.
Re: Pacemaker question?
Posted: Thu Jul 23, 2015 5:22 pm
by hendy
Late li125 has the same gearbox as a pacemaker
Re: Pacemaker question?
Posted: Sun Jul 26, 2015 2:01 pm
by alanscottj
hendy wrote:Late li125 has the same gearbox as a pacemaker
So could I use the third gear from a late li125? Would that work/be stronger?
Re: Pacemaker question?
Posted: Sun Jul 26, 2015 3:48 pm
by Meds
I don't believe the later loose 3rd gear will mesh with the early Christmas tree
Re: Pacemaker question?
Posted: Sun Jul 26, 2015 4:00 pm
by alanscottj
Meds wrote:I don't believe the later loose 3rd gear will mesh with the early Christmas tree
Yeah, I heard a rumour that t doesn't
Re: Pacemaker question?
Posted: Sun Jul 26, 2015 4:28 pm
by Meds
mine has a 37 tooth cog fitted in 3rd,( I don't know what gearbox it's from) the gearbox works but Im not sure whether to trust it on a high powered motor.
Does anyone know if it's possible to use the early type 1,2&4 loose gears, a Spanish 3rd and a late type cluster to make up a pacemaker box?