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  #11  
Old 02-20-2020, 10:54 PM
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N546RV N546RV is offline
 
Join Date: Aug 2010
Location: Houston, TX
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Quote:
Originally Posted by Sleepy View Post
Philip,

I noticed on your builder's blog you are looking at the Titan 370. Great engine and JB is the best.

Before you go too far down the rabbit hole with the 74HRT you should know that as of last October Whirlwind has quietly stopped supporting the 370/375 engines. Check their specifications tab on the all the RV props (i.e. 300 series, 74HRT, etc), it's in red letters.

I called them 3 times back in November to find out what is up. Unfortunately, despite several promises of a call back from the lady who answered the phone, they never returned my call or answered my question as to why the change of heart on the 370/375 engines.

Good Luck
Hmm...well, that's good to know. Really interesting to see the change of heart, just last August in an email they told me that the 74HRT would "certainly be a perfect match" for my IOX-370-equipped RV-8.

The lack of any information in that change is a bit disheartening.
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-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)
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  #12  
Old 03-05-2020, 02:36 PM
HunterH HunterH is offline
 
Join Date: Jan 2019
Location: Greensboro, NC
Posts: 9
Default Support for the IO-370/375

These engines have a higher amplitude for peak torque between ignition strokes. They are also less common engines so Whirl Wind does not have enough data to support the fatigue life of components on these engines. I will try to report back with updates as they come.
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  #13  
Old 03-05-2020, 02:47 PM
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N546RV N546RV is offline
 
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Location: Houston, TX
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More information on the lack of support can be found here: http://www.vansairforce.com/communit...d.php?t=179921

It seemed like something worth spinning off into its own conversation.
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-8 fuselage in progress (remember when I thought the wing kit had a lot of parts? HAHAHAHAHA)
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https://www.meetup.com/Houston-Area-RV-Enthusiasts/
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