UK Karting - Notice Board (2-Stroke Karting) : Re: BT82 Ignition timing

Notice Board (2-Stroke Karting)

Re: BT82 Ignition timing
Posted by 'QuickOldTimer' on 06 Feb 2012 @ 21:26

| View Message Thread | Reply to this message |

QuickOldTimerJoined: April 2005
Total Posts: 1
[ View User Profile ]

I have often heard this " retard for top end / advance for bottom end" stuff.......and I don't believe it!!!
At 15,000rpm there is half as much time available for combustion to happen as there is at 7,500rpm, so it seems obvious to me that you should advance for top end. This was born out when I adapted a motoplat so that by pulling a lever on the steering wheel I retarded the timing - which killed the top end (it was on a Parilla SS20).
My experimentation over the years has proved that it is better to err on the side of too advanced, than too retarded, as slightly too retarded hits power much more than slightly too advanced.
Notwithstanding all of that though, the TAG engine is a bit of an oddball, which electronically restricts the high rpm power (or is it revs?), presumably by altering the timing, and so you would need to know whether it achieves this by advancing or retarding the timing before deciding on the best course of action.

Message Thread:

BT82 Ignition timing by 'speedyman' (05 Feb 2012 @ 20:19)

Re: BT82 Ignition timing by 'PaulMRotax' (06 Feb 2012 @ 12:48)

Re: BT82 Ignition timing by 'RocketMan46' (06 Feb 2012 @ 14:50)

Re: BT82 Ignition timing by 'PaulMRotax' (06 Feb 2012 @ 15:14)

Re: BT82 Ignition timing by 'QuickOldTimer' << You are here!

Re: BT82 Ignition timing by 'PaulMRotax' (06 Feb 2012 @ 22:00)

Re: BT82 Ignition timing by 'QuickOldTimer' (06 Feb 2012 @ 22:49)

Re: BT82 Ignition timing by 'PaulMRotax' (07 Feb 2012 @ 9:15)

Re: BT82 Ignition timing by 'BrianP' (07 Feb 2012 @ 9:23)

Re: BT82 Ignition timing by 'd-i-y71' (07 Feb 2012 @ 9:42)

Ignition timing by 'RSBW' (07 Feb 2012 @ 10:00)

Re: Ignition timing by 'itpro' (07 Feb 2012 @ 12:04)

Re: Ignition timing by 'Mark 71' (07 Feb 2012 @ 12:44)

Re: Ignition timing by 'QuickOldTimer' (07 Feb 2012 @ 12:46)

Re: Ignition timing by 'itpro' (07 Feb 2012 @ 13:43)

Re: Ignition timing by 'RSBW' (07 Feb 2012 @ 18:09)

Post a Reply:

You may post a direct reply to this message which will appear in this thread.
To post a new or unrelated message use This Form. Top of Page
Notice Board Index

[ UK Karting Main Index ]


News	Karts & Karting	Notice Board	Market Place	Companies Directory	Tracks Directory	Events Calendar	Race Results	Photo Gallery	Links