petter a1 timing
3 posters
Page 1 of 1
petter a1 timing
hi there can anyone help? i have a 1946 petter a1 and i wondered where the timing marks are? i am new to the stationary engine scene and would appreciate any help anyone can give many thanks jimmy
Re: petter a1 timing
Hi Jimmy!!
And Welcome to the forum!!
I have no idea on the timing but someone else may know!
If i had a guess the impulse needs to click at tdc this is when the key for the flywheel is at the bottom
Adam
And Welcome to the forum!!
I have no idea on the timing but someone else may know!
If i had a guess the impulse needs to click at tdc this is when the key for the flywheel is at the bottom
Adam
_________________
Wolseley WD2+H2 Pump
Bamford EG1
Petter M and 110v Dynamo
Lister D
Petter AA1
Plus Many more Aircooled Engines
Statman- Life Member
- Posts : 697
Join date : 2009-07-21
Age : 38
Location : PENZANCE,CORNWALL
Re: petter a1 timing
Hi and welcome to the forum Jimmy
Petter A1's have an impulse trip fitted to retard and intensify the spark at the plug for starting, the retardation is around 15 degrees.
in normal running conditions, ie with the impulse disengaged (above 165rpm) the timing should be 20 degree's before top dead centre
timing marks can be found on the flywheel, or at least the TDC mark will be, 20 degrees is something like 2" or so before that i think, anyway, 2" will make the timign close enough, and if the engine clicks dead on TDC you know you cant be far off.
the Petter A1 manual will tell you how to do it, you can get hold of these from the internal fire website (along wth many others) for an access fee of £10, afterwich you can download as many as you like.
Paul
Petter A1's have an impulse trip fitted to retard and intensify the spark at the plug for starting, the retardation is around 15 degrees.
in normal running conditions, ie with the impulse disengaged (above 165rpm) the timing should be 20 degree's before top dead centre
timing marks can be found on the flywheel, or at least the TDC mark will be, 20 degrees is something like 2" or so before that i think, anyway, 2" will make the timign close enough, and if the engine clicks dead on TDC you know you cant be far off.
the Petter A1 manual will tell you how to do it, you can get hold of these from the internal fire website (along wth many others) for an access fee of £10, afterwich you can download as many as you like.
Paul
Guest- Guest
ingnition timing mark.
to get an accurate mark for the timing mark. first find top dead centre, then measure the circumference, divide this measurement by 360,= the amount to measure for each degree..
EG if the measurement of the circumference is 360mm divide by 360( degrees in a full circle ). =1 mm per degree so 20' btdc would be 20mm
this always works for me,
Earl.
EG if the measurement of the circumference is 360mm divide by 360( degrees in a full circle ). =1 mm per degree so 20' btdc would be 20mm
this always works for me,
Earl.
earlsinclare- Life Member
- Posts : 510
Join date : 2009-09-19
Age : 52
Location : north yorkshire
Similar topics
» Petter A 1 Timing help please
» Petter A1, valve timing
» Lister D Timing
» Hard to start Ruston PT
» ruston & hornsbt pb6 timing
» Petter A1, valve timing
» Lister D Timing
» Hard to start Ruston PT
» ruston & hornsbt pb6 timing
Page 1 of 1
Permissions in this forum:
You cannot reply to topics in this forum
|
|