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by Piatti
Fri Jun 28, 2013 10:24 am
Forum: Lambretta Tech
Topic: Rebore questions - *updated with pics*
Replies: 10
Views: 6711

Re: Rebore questions - *updated with pics*

tonydevon wrote:? thats 110 psi isnt it? not below 100
yes its about 110 psi

It should be 125 to 150 according to http://www.dansmc.com/compression_test.htm :?:
by Piatti
Thu Jun 27, 2013 8:23 pm
Forum: Lambretta Tech
Topic: Rebore questions - *updated with pics*
Replies: 10
Views: 6711

Re: Rebore questions - updated with pics

Took the head off and piston out, the piston is 57.8 - 4th oversize, only discovered this after cleaning it up This was the state of the piston http://i90.photobucket.com/albums/k264/piatti_2006/2013-06-27184339_zps1658bb49.jpg http://i90.photobucket.com/albums/k264/piatti_2006/2013-06-27190233_zps9...
by Piatti
Thu Jun 27, 2013 1:13 pm
Forum: Lambretta Tech
Topic: Rebore questions - *updated with pics*
Replies: 10
Views: 6711

Re: Rebore questions

Spanish Fly wrote:
Piatti wrote:20mm
2mm not 20mm. :oops:

SF
Ha, my mistake :oops:
by Piatti
Thu Jun 27, 2013 11:59 am
Forum: Lambretta Tech
Topic: Rebore questions - *updated with pics*
Replies: 10
Views: 6711

Re: Rebore questions

Thanks for the replies, Its a 150 special am getting rebored, did a compression test yesterday and it was below 100 psi. The barrel has been rebored before, but I can't remember to what oversize. I want to keep running the original 18mm carb. If I rebored to 10th oversize 59mm the piston would be 20...
by Piatti
Thu Jun 27, 2013 8:41 am
Forum: Lambretta Tech
Topic: Rebore questions - *updated with pics*
Replies: 10
Views: 6711

Rebore questions - *updated with pics*

Some advice on rebores required please A 150cc barrel comes as 57mm standard, rebore sizes go up 00.2 mm So oversizes are: 57.2 - 1st oversize 57.4 - 2nd 57.6 - 3rd 57.8 - 4th 58 - 5th 58.2 - 6th 58.4 - 7th 58.6 - 8th 58.8 - 9th 59 - 10th oversize How far can you rebore a 150cc barrel ? could you re...
by Piatti
Mon Jun 24, 2013 4:59 pm
Forum: Lambretta Tech
Topic: starting problems
Replies: 1
Views: 1241

starting problems

Hi, I'm having problems starting, the scooter will only start when I sit on the scoot and tilt to the side and get a good swing at the kickstart even then it can take ages to fire up. I have had the side casing off and adjusted the kick start plate so it engages as soon as you operate the kick start...
by Piatti
Fri May 24, 2013 12:17 pm
Forum: Lambretta Tech
Topic: Clutch not engaging
Replies: 4
Views: 3288

Re: Clutch not engaging

Problem sorted now thanks...

Disassembled the clutch and re-fitted, it seems the clutch plates were'nt separating when clutch was pressed.
by Piatti
Wed May 22, 2013 12:11 pm
Forum: Lambretta Tech
Topic: Clutch not engaging
Replies: 4
Views: 3288

Re: Clutch not engaging

Took the side casing off last night and the clutch thimble is still in place, there is no bronze clutch bush as its a 150 special and the No6 comes in direct contact with the clutch thimble when clutch arm is operated. Everything internally looks ok to be honest, I will check the clutch circlip toni...
by Piatti
Tue May 21, 2013 9:29 am
Forum: Lambretta Tech
Topic: Clutch not engaging
Replies: 4
Views: 3288

Clutch not engaging

Just replaced both gear cables and clutch cable, clutch now wont engage and clutch arm on engine casing feels notchy when turned by hand with an open ended spanner.

Any ideas before I investigate further :?:
by Piatti
Fri Mar 30, 2012 9:49 am
Forum: Paint & Bodywork Tech
Topic: 2 Pack Paint - dangerous?
Replies: 16
Views: 6088

Re: 2 Pack Paint - dangerous?

I sprayed a full scooter in the garage using a Sundstrom SR100 half mask with the following filters
  • isocyanate filter up to 40 hrs use
    Gas filter
    Particle filter
See attached list....

Piatti

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