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Book on Lambretta Tuning
Posted: Sat Nov 08, 2014 6:15 pm
by Micky Tapp
Can anyone recommend one? I fancy a read before I decide WTF to do with me GP, been reading forums for six months and confusion reigns!
Re: Book on Lambretta Tuning
Posted: Sat Nov 08, 2014 6:58 pm
by molibdimum
Not sure if there is such a book Mick......but what do I know.
Somehow I don't think your the TS1/RB with an expansion pipe type so why not go for the Avanti with the clubman.
That's if you want to keep the standard look with a not so high revving engine.
The world is your oyster my friend but it all depends on what your looking for.
Re: Book on Lambretta Tuning
Posted: Sat Nov 08, 2014 6:59 pm
by molibdimum
Or are you just looking to tune the standard engine?

Re: Book on Lambretta Tuning
Posted: Sat Nov 08, 2014 7:24 pm
by Muppet
Re: Book on Lambretta Tuning
Posted: Sat Nov 08, 2014 11:13 pm
by olliewtf
If i were you Id buy Graham Bells 2 stroke tuning manual. Read it bearing in mind he is talking about far higher revving engines with far more gears. Then read MBs tech pages on tuning online, where he specifically translates that info from Bells book into the lambretta world.
Re: Book on Lambretta Tuning
Posted: Mon Nov 10, 2014 9:35 pm
by Micky Tapp
Thanks, Muppet, Ollie, Steve, I will look up Graham Bells manual and also been given another name, Dave Webster.
Steve; Craig and I visited Darren S on Saturday and it prompted me to post this question, what I want to do is figure a spec out for myself in detail, but obviously need some techy facts to do the research first.
Ollie good tip about MBs tech site, I do read that quite often, the detail Mark goes into is exactly what I am after.
Steve, ultimately what I am trying to do is keep up with you and Keef!

Re: Book on Lambretta Tuning
Posted: Mon Nov 10, 2014 10:08 pm
by eden
not all of the info in the Webster manual is correct, there are either typos or emissions in there.
decide how fast you want to go
use the info available in various manuals and books to decide on port timings, port area and port shape.
use this to work out what measurement you need to cut to to get the desired port timings
http://www.lambretta-images.com/archive/porttiming.php
buy a flexidrive
mark up a barrel and cut away with a smile on your face.
build the engine up and decide where the motor is lacking
take it apart and repeat the steps above.
or pay someone else to do it but if your going to do that you can forget about working out what area,timings etc because who ever you pay will want to do it they way they want.
Just go for it and enjoy doing it is all I would say.
Re: Book on Lambretta Tuning
Posted: Mon Nov 10, 2014 10:16 pm
by Yanker
Webster has a good few 'old'school' race oriented tips for adjusting port heights on Lambrettas. Some of which are phenominally good grounding for a fast road going piston ported Lambretta (SMALL AND LARGE BLOCK) if you can be arsed with the detailed re-work. Many off the shelf kits save the work and compete: yet to witness one that out performs like for like tho.
Re: Book on Lambretta Tuning
Posted: Mon Nov 10, 2014 11:38 pm
by nelson pk
olliewtf wrote:If i were you Id buy Graham Bells 2 stroke tuning manual. Read it bearing in mind he is talking about far higher revving engines with far more gears. Then read MBs tech pages on tuning online, where he specifically translates that info from Bells book into the lambretta world.
100% agree!
That book is excellent in understanding general two stroke theory on tuning, carburation, ignition, basically everything. It doesn't give specific Lambretta port timings etc but I gained more knowledge from this book than any other Lambretta orientated tuning manual.
Re: Book on Lambretta Tuning
Posted: Tue Nov 11, 2014 12:58 pm
by olliewtf
Youre quite right, graham bells book covers all bases in great detail in a chronological way to show you the advancements in the development of 2 strokes.
Most importantly however, is that it is extremely well written. If youre a novice, like myself, it is incredibly easy to follow and very well explained. This to me is probably the books best feature.
It will give you a real grounding in the workings of a 2 stroke, knowledge which can then be adapted and applied to your scooter.
Eden's right too ofcourse, its good fun and a great feeling when you first test it out!
It's also easier than you think, all about the planning!