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IO390 & Finishing Kit

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Dan.Beadle(at)hq.inclines
Guest

Posted: Wed May 03, 2006 6:39 am Post subject: IO390 & Finishing Kit

I am building an RV8 for use up in the mountains.  Normally I would

turbocharge but that is not a simple option for the RV.  So we have

decided to put in a larger engine and "de-rate" it for SL to 200 HP,

giving us a little more performance to cross the mountains at 16,000'.



=20



We have also decided to go light up front wherever possible to offset

the weight and moment of the bigger engine.  These include:



=20



-          Grove Landing gear (-18#, maybe some speed gain)



-          Aerocomposite CS prop (-30#)



-          James Cowl and Plenum (no change, but 10-15K speed gain)



-          James Wheel Pants



-          Rear battery



=20



Does anyone know the best way to order the finishing kit and avoid extra

parts from Vans?  Do you have any recommendations for changes?

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LessDragProd(at)aol.com
Guest

Posted: Wed May 03, 2006 7:10 am Post subject: IO390 & Finishing Kit

Hi Dan,

 

IMHO, you'll need to add dual electronic ignition in place of the  Mag's.

One of the Lycoming engineers told me that the 360 engine with a light  

propeller brings the accessory case gear harmonics below the 2700 RPM  level.  It 

doesn't damage the gears, but the Mag's and fuel pump don't last  very long in 

this environment.  This could apply equally to the 390 engine  with the light 

propeller.

 

Regards,

Jim Ayers

 

In a message dated 05/03/2006 7:40:48 AM Pacific Daylight Time,  

Dan.Beadle(at)hq.inclinesoftworks.com writes:




<Dan.Beadle(at)hq.InclineSoftworks.com>



I am building an RV8 for use  up in the mountains.  Normally I would

turbocharge but that is not a  simple option for the RV.  So we have

decided to put in a larger  engine and "de-rate" it for SL to 200 HP,

giving us a little more  performance to cross the mountains at 16,000'.



=20



We have also  decided to go light up front wherever possible to offset

the weight and  moment of the bigger engine.  These include:



=20



-   Grove Landing gear (-18#, maybe some speed  gain)



-          Aerocomposite CS prop  (-30#)



-          James Cowl and Plenum (no  change, but 10-15K speed gain)



-           James Wheel Pants



-          Rear  battery



=20



Does anyone know the best way to order the finishing  kit and avoid extra

parts from Vans?  Do you have any recommendations  for changes?

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rv8ch

Joined: 10 Jan 2006
Posts: 250
Location: Switzerland

Posted: Wed May 03, 2006 7:12 am Post subject: IO390 & Finishing Kit

 	  Quote: 	
		   -          Grove Landing gear (-18#, maybe some speed gain)

 ...

 >
	


 	  Quote: 	
		   Does anyone know the best way to order the finishing kit and avoid extra

 parts from Vans?  Do you have any recommendations for changes?


	


I've got an article describing what you can leave out with

the Grove gear here:



  http://www.rv8.ch/article.php?story=20040404153921362



While it won't save weight, you may want to ask Grove

about the single piece gear they offer for the RV8, but

didn't have on their website last time I checked.



-- 

Mickey Coggins

http://www.rv8.ch/

#82007 finishing

do not archive

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_________________
Mickey Coggins
http://www.rv8.ch/

Dan.Beadle(at)hq.inclines
Guest

Posted: Wed May 03, 2006 7:30 am Post subject: IO390 & Finishing Kit

Thanks.  Which ignition do you recommend?



--

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