Search found 707 matches
- Fri Jan 23, 2009 12:02 pm
- Forum: Lambretta Tech
- Topic: Timing, Dial Gauge or Degree Disc
- Replies: 27
- Views: 9561
Re: Timing, Dial Gauge or Degree Disc
so what your saying is at any point in the dwell is ok for you to measure back 2mm or 19deg No, if you use degrees you MUST find TDC as you are measuring crank rotation. If you use a dial gauge you are measuring piston travel, as there is no movement of the piston in the dwell period the gauge will...
- Thu Jan 22, 2009 2:18 pm
- Forum: Lambretta Tech
- Topic: Timing, Dial Gauge or Degree Disc
- Replies: 27
- Views: 9561
Re: Timing, Dial Gauge or Degree Disc
If you are using a dial gauge there is no point whatsoever finding true TDC because at any time in the dwell period the gauge (when zeroed) will read 0mm. It will read 0mm at one extreme of the dwell right through to the other extreme because obviously the piston isn't moving, so finding the mid poi...
- Wed Jan 21, 2009 8:32 pm
- Forum: Lambretta Tech
- Topic: Timing, Dial Gauge or Degree Disc
- Replies: 27
- Views: 9561
Re: Timing, Dial Gauge or Degree Disc
With the degree disc it is crucial to find true TDC before measuring the degrees back to the firing point. As a dial gauge is measuring piston travel as long as the gauge is zeroed anywhere in the dwell period then 2mm back will equal 19 degrees BTDC (on a 58mm stroke, 107mm con rod crank).
- Tue Jan 13, 2009 1:06 am
- Forum: Lambretta Tech
- Topic: Which BGM?
- Replies: 14
- Views: 7153
Re: Which BGM?
80w regs are, I believe, rated at 20A. This is the current that can pass through it to the load before damage occurs. 80W is how much power it can dump to earth.
- Tue Jan 13, 2009 12:31 am
- Forum: Lambretta Tech
- Topic: Which BGM?
- Replies: 14
- Views: 7153
Re: Which BGM?
The regulator will not restrict any power through it, the input and output connectors are common (ie connected together inside the unit). The regulator only plays a part when the load on the stator is reduced (lights turned off) then it must conduct current to earth and dump it as heat in order to m...
- Mon Jan 12, 2009 10:47 am
- Forum: Lambretta Tech
- Topic: Effect of humidity and air temperature on carb performance
- Replies: 55
- Views: 25591
Re: Effect of humidity and air temperature on carb performance
That's what I would have thought, it makes sense that you would need a richer mixture if its cold, thats why you need the choke ;) colin Choke is needed when the engine is cold because a slow cranking speed with resulting poor airflow will cause poor atomisation of the fuel, also no heat is present...
- Fri Jan 09, 2009 10:17 pm
- Forum: Lambretta Tech
- Topic: Effect of humidity and air temperature on carb performance
- Replies: 55
- Views: 25591
Re: Effect of humidity and air temperature on carb performance
It has often been noted that things like race tuned cars and bikes go a little better when it is a cold crisp morning. I know that Mikuni and Dellorto both do a sliding chart showing which way to go for the jets. Same thing for alltitude. Thanks for that "T5-190"........(you won`t know wh...