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Frequently
asked questions
Please note
that this FAQ has been compiled from questions posed on the forums,
answers are similarly taken from the forums and some will represent
some personal views. No implication should be made that any of the
below is LCGB affiliated advice.
How
do I register an imported scooter?
How does the clutch work?
Lambretta tyre pressures?
How does the MOT treat all my extra spotlights?
How do I replace my speedo cable?
How do I get a frame number for my new unstamped
frame?
Misfiring problems?
12V Electronic Kits
185 Kit Differences
Registering
an imported scooter
Simply visit http://www.lcgb.co.uk/workshop/register.html
for all the information you could need.
Lambretta
Clutch
Crankshaft turns the large sprocket via the chain. This is also
the outer part of the clutch and turns freely if not connected to
the chain or gear cluster. Cork plates are connected to the large
sprocket via the lugs on the outside and turn with it. A set of
springs hold the corks in contact with the steel plates. Steel plates
are connected to the inner part of the clutch (spider) by the lugs
on the inside. The spider is permanently connected to the gear cluster
which drives the rear wheel through gears. When the operating arm
is pulled by the cable, a cam puts pressure on the springs allowing
the plates to seperate hence the large sprocket continues to turn
but drive is no longer transmitted through the plates. Oil lubricates
the plates preventing them from heating up and burning out as they
are brought together. The springs have to be strong enough to keep
the plates in solid contact when the clutch is engaged (transmitting
power).
Lambretta
Tyre Pressures - Series 1, 2, 3.
Standard : 18psi (1.2 bar) front 28 (2.0) rear
With pillion 18 psi 34 (2.4) rear
It should be remembered that incorrect tyre pressures can be a fail
at MOT time. It's unusual for a tester to actually test the pressures
but when he's checking the tread etc he may feel that there's too
much "give" and check them.
It is good practice to check your pressures once a week at least
as they can affect handling as well as fuel economy.
One more tip: If you are carrying a spare, keep it at the same pressure
you would use the rear, it's a lot easier to let a little air out
if you have to replace the front rather than put on an under inflated
rear wheel.
MOT
and extra spots
There appears to be a few answers to this one but suffice to say
that if in doubt talk to the mot tester, it appears (as with all
things Lambretta) that different testers may take different views.
Just to be thorough though we've included some points from forum
members.
"The guy at my place said that if they have wires and switches,
they have to work.
If non then they are classed as accessories."
"I’m pretty sure that if you cover them up (remember
those chequered covers you could once get) then they don’t
have to be working to pass an MOT, I may be wrong though."
"Some interesting info from motester.co.uk -
However, believe it or not, due to a quirk in the regulations if
you blank off or disconnect all of your lights then the MOT garage
does not have to Test the lights and cannot fail your vehicle on
the MOT. However if you use the vehicle after dark without a number
plate light you would face prosecution if caught.
And
Front fog lamps are not part of the MOT"
Speedo
Cable Replacement
Option 1
Get a length of wire about three times the length of the outer,
it must be able to fit inside the inner (you can use gardening wire,
electrical cable or welding wire).
Remove the inner then run the wire down the outer.
You can then slide the old outer up and out over the wire, make
sure the wire stays put rather than coming out with the outer.
Then slide the new outer down the wire.
Then put the new inner in and connect up.
Option
2
Pull the old one out from the top.
Clean
out the bottom fork stem hole to remove any crud.
Thread
the new (or old) inner up from the bottom, reversed.
Now slide the new outer over the inner from the top and push it
down.
Wiggle it when it meets the exit hole to get it through.
Thread it through to its correct length.
Remove the inner, grease it well and thread that through the outer
from the top.
Frame
Numbering
Please note, stamping a bare frame with a number from another frame
is ringing and illegal, don't do it!
However, if you have bought one of the "new" indian frames
which come unstamped and you want a frame number you have to apply
to the dvla www.dvla.gov.uk
for a 16 digit number and then stamp this onto your frame.
Misfiring
If your scooter's misfiring there could be a couple of reasons which
we've listed in order of checking.
Check spark plug gap.
Check your points gap (assuming you're running points).
You may need to get your flywheel remagnetised.
12
Volt Electronic Kits
Please note, some people new to Lambrettas have been known to think
that electronic ignition is the same as electric start. It's not,
it just replaces your points system, it does not provide you with
a push button start.
So, are all 12V kits the same?
Simple answer is no, many of the current ones on the market are
indian and do have varying degrees of quality and build. The majority
of dealers rewire the stators to ensure a quality kit, one dealer
even strengthens the flywheel boss by re-riveting and welding it.
There is also a fairly recent addition to electronic kits in the
form of the Varitronic System which is a quality Italian system
with auto advance and retard system built in, it is also quite a
bit lighter than the current conventional systems available. It's
supposed to be so good, some dealers won't sell the indian kits
anymore. There are several dealers selling this kit, and some more
detailed information can be found on Cambridge Lambretta's site
here. http://www.lambretta.co.uk/varitronic.html
NOTE: At the time of writing, the Varitronic will
only fit the GP crank and there are no known plans to change this.
185
Kit Differences
Imola 185 -
Ally barrel, carb on "wrong" side and reed valve.
Mugello 185 - Ally Barrel (nicasil lined), carb on the normal side
but no reed valve
GT 185 - Iron barrel (not lined), carb on normal side (unless using
a larger e.g. 30mm carb) and reed valve.
SR 185
- Ally Barrel (Iron Liner)
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