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Old Yesterday, 08:34 PM
maus92 maus92 is offline
Join Date: Nov 2013
Location: Annapolis MD
Posts: 376

I did a test start on the engine today. Ran smoothly at 760 rpm on the EI. I didn't have a helper, and the mag was not running well after being overhauled, so I did not do the timing. My question is what rpm is best to do the timing at? Can it be accomplished at idle, or should another range be used?
2000 RV-8A | O-360, FP, G3X Touch, VP-X, EarthX
Eastern Shore | KESN
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Old Yesterday, 08:44 PM
rv6ejguy's Avatar
rv6ejguy rv6ejguy is offline
Join Date: Mar 2005
Location: Calgary, Canada
Posts: 4,536

I like to use 1000 rpm. Set that range to a value you have marked on your flywheel 10/ 25 etc. Make sure rpm reads 1000 in gauge mode.

Shoot it with the gun and set Magnet Position so mark coincides with your timing entered.

Default is 90 on a Lycoming. With single pickups we usually see 89-91, dual picks around 86 on one and 93 on the other.

Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, Marcotte M-300, IVO, RV6A C-GVZX flying from CYBW since 2003- 421 hrs. on the Hobbs,
RV10 95% built- Sold 2016

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