variatronic ignition fitted to a casa 225 timing instructions

FREE tuning and maintenance info, plus links to our original tuning pages that started it all off.
holty
registered user
Posts: 898
Joined: Wed Jul 15, 2015 11:52 pm
ebay user ID: amholt123
Main scooter: lambretta gp
Location: east yorkshire
Contact:

Fri Feb 14, 2020 8:33 pm

hi all, im just building a casa 225 x7 kit onto an engine for a mate of mine, also got a protti pipe and a variatronic ignition to fit, the instructions seem very unclear, i trawled the internet and found instructions on cam lam site, it suggested 19 degees at fast tickover with an expansion, does this sound about right ? I do also have one of these variatronic kits to fit to my rotax 290 at some point as well so I do need to work this out, thanks in advance,
holty

Muppet
registered user
Posts: 1416
Joined: Thu Sep 16, 2010 9:54 pm
Main scooter: SX 150 running in

Fri Feb 14, 2020 8:41 pm

u will make little power on a Variatronic set at 19 degrees it will retard too much before it gets on the pipe; set the timing at 2000 rpm; I’d run somewhere close to 23 degrees as a start point it’ll retard to around 15 degrees at revs; you could ask mickey at rimini lambretta he’d give you the best reply
im not a complete idiot
.
.
s me of the piec s are mis i g

Muppet
registered user
Posts: 1416
Joined: Thu Sep 16, 2010 9:54 pm
Main scooter: SX 150 running in

Fri Feb 14, 2020 9:23 pm

think the recommended ignition timing for the 225 x7 is 24-26 degrees at 2000rpm
im not a complete idiot
.
.
s me of the piec s are mis i g

hendy
registered user
Posts: 843
Joined: Mon Jul 07, 2014 10:34 am
Main scooter: lambretta li 125
Location: Tyne and Wear
Contact:

Fri Feb 14, 2020 9:59 pm

24 at 2000 rpm will be about 16 degrees by about 7000 rpm.

Difficult to strobe due to the double spark. Most strobes only work up to about 8000rpm so at about 4000 rpm, they go haywire on a varitronic.

Leo
registered user
Posts: 52
Joined: Sat Apr 25, 2015 1:34 pm
Main scooter: Lambretta
Contact:

Fri Feb 14, 2020 10:05 pm

The leaflet I got with mine from Cam Lam says 19 with a expansion, as above. When I questioned Cam Lam about this with the logic you guys are applying I was told 19 and wasn't given a reason why not 23 and it retards to 18.

But I agree id think it would be at like 14 of maximum revs.

http://www.lambretta.co.uk/downloads/va ... tting.html

Muppet
registered user
Posts: 1416
Joined: Thu Sep 16, 2010 9:54 pm
Main scooter: SX 150 running in

Fri Feb 14, 2020 11:40 pm

the info on the casa 225 x7 from rimini says 24-26 with a protti exhaust
im not a complete idiot
.
.
s me of the piec s are mis i g

holty
registered user
Posts: 898
Joined: Wed Jul 15, 2015 11:52 pm
ebay user ID: amholt123
Main scooter: lambretta gp
Location: east yorkshire
Contact:

Sat Feb 15, 2020 9:49 am

many thanks for your replies

User avatar
garry inglis
registered user
Posts: 1264
Joined: Tue Jul 21, 2015 8:04 pm
ebay user ID: garry52uk
Main scooter: ts1 230 and rb200
Location: darlington
Contact:

Sat Feb 15, 2020 1:34 pm

steve ive just set one up on my mates engine i rebuilt ive set it at 21as it avances 2degrees first ie 23 at3000rpm then retards as far as 16/15 depending on pipe and what the engine revs too

holty
registered user
Posts: 898
Joined: Wed Jul 15, 2015 11:52 pm
ebay user ID: amholt123
Main scooter: lambretta gp
Location: east yorkshire
Contact:

Sat Feb 15, 2020 9:38 pm

garry inglis wrote:
Sat Feb 15, 2020 1:34 pm
steve ive just set one up on my mates engine i rebuilt ive set it at 21as it avances 2degrees first ie 23 at3000rpm then retards as far as 16/15 depending on pipe and what the engine revs too
cheers garry, its not ready to start up yet, waiting on the carb, did yours strobe ok ? was that a casa 225 x7 ?

User avatar
garry inglis
registered user
Posts: 1264
Joined: Tue Jul 21, 2015 8:04 pm
ebay user ID: garry52uk
Main scooter: ts1 230 and rb200
Location: darlington
Contact:

Sun Feb 16, 2020 11:53 am

at startup its already advanced to say 1200rpm on tickover so i strobed it at 3000rpm to 23 and no more after 3000rpm it retards to 17/16 it was a normal variatronic from cambridge lambretta

Post Reply Previous topicNext topic
  • Information
  • Who is online

    Users browsing this forum: No registered users and 0 guests