I just spoke to Mahlon and a bunch of other people on this engine and it seems like this engine is essentially a non-counterbalanced A1B6 and is potentially subject to vibration (hence a potential RPM restriction) with a metal prop. Will I even have one?
I am looking at using this with the Hartzell 7497 that Van sells.
I also have an email into Hartzell asking them this very question.
I know that a composite prop will avoid all this but I like metal. That might be swayed, however.
My question is, Firewall Forward. Are there any induction changes? Ken from Van's says it should be similar to the A1B6 but I would like to hear from builders.
Anything else I should be concerned with? Comments? Thoughts?
CJ
Anyone using an IO 360 A1A engine?
- captain_john
- Sparky
- Posts: 5880
- Joined: Sun Oct 31, 2004 9:17 am
- Location: KPYM
Anyone using an IO 360 A1A engine?
RV-7
Garmin G3X with VP-X & a TMX-IO-360 with G3i
It's all over but the flying! 800+ hours in only 3 years!
Garmin G3X with VP-X & a TMX-IO-360 with G3i
It's all over but the flying! 800+ hours in only 3 years!
CJ-
I remember the IO A1A needing a special exhaust maybe? Perhaps it's something to consider.
Any reason for needing 200 HP? I've heard stories of it being a little better on the pocketbooks for efficiency. But if it's more expensive than a 180 IO360, will the incremental fuel savings ever offset the fixed extra cost? Or do you just want the fastest MF'in RV-7 on RB?
RPM restrictions aren't a big deal with a CS prop. Its easy enough to dial it back to a setting and just leave it there in cruise. With a FP prop it would be a bigger deal IMHO.
I remember the IO A1A needing a special exhaust maybe? Perhaps it's something to consider.
Any reason for needing 200 HP? I've heard stories of it being a little better on the pocketbooks for efficiency. But if it's more expensive than a 180 IO360, will the incremental fuel savings ever offset the fixed extra cost? Or do you just want the fastest MF'in RV-7 on RB?
RPM restrictions aren't a big deal with a CS prop. Its easy enough to dial it back to a setting and just leave it there in cruise. With a FP prop it would be a bigger deal IMHO.
Mike Bullock
http://www.rvplane.com
RV-7 | Superior IO-360 | Whirlwind 200RV
Garmin GTN650 | GRT Dual Sport SX EFIS
Status: FLYING!
http://www.rvplane.com
RV-7 | Superior IO-360 | Whirlwind 200RV
Garmin GTN650 | GRT Dual Sport SX EFIS
Status: FLYING!
- captain_john
- Sparky
- Posts: 5880
- Joined: Sun Oct 31, 2004 9:17 am
- Location: KPYM
Mike, Speed I couldn't give a hoot about to be quite honest.
RV's are fast enough for me... for at least the time being.
I want to be able to run LOP at reduced power and still have adequate power to maintain "RV speed" at cruising altitude at LOP settings.
...if ya catch my drift. I guess I am cheap with fuel but spendthrifty with engines?
Soooo... My quest continues?
CJ
RV's are fast enough for me... for at least the time being.
I want to be able to run LOP at reduced power and still have adequate power to maintain "RV speed" at cruising altitude at LOP settings.
...if ya catch my drift. I guess I am cheap with fuel but spendthrifty with engines?
Soooo... My quest continues?
CJ
RV-7
Garmin G3X with VP-X & a TMX-IO-360 with G3i
It's all over but the flying! 800+ hours in only 3 years!
Garmin G3X with VP-X & a TMX-IO-360 with G3i
It's all over but the flying! 800+ hours in only 3 years!
you can have it both ways. I've been running around lately at 21-23" 2350-2400 rpm. burning 8.4 to 10.5 speeds have been 170ktas and above. I'm still figuring out the whole LOP/ROP engine management and have been running on the rich side for engine break-in. I was running 7.1gph at 20" 2300 and still getting 164kts.captain_john wrote:Mike, Speed I couldn't give a hoot ..........
I want to be able to run LOP at reduced power and still have adequate power to maintain "RV speed" at cruising altitude at LOP settings.
...........J
I haven't been able to run WOT below 10500 due to turbulence coming off the mountain waves. But at 6500' I ran 25" 2450(or something like that) and was see 183-186kts before I had to throttle back.
Best of both worlds.
Brian
Townsend, MT
Townsend, MT
- captain_john
- Sparky
- Posts: 5880
- Joined: Sun Oct 31, 2004 9:17 am
- Location: KPYM
Haha...I recall last year when on my way home from Colorado with that bright yellow 360 in the back of my jeep. "Man I have GOT to finish this thing up!, I've got to much money and effort sitting around doing nothing."captain_john wrote:Ohhh yah... I gotta hurry up and get this thing done!
Canopy stuff tonight... OMG!
...the frustration! hahaha
Well, I guess it comes down to this: I NEED AN ENGINE to spin a prop!
CJ
Get'r done
Brian
Townsend, MT
Townsend, MT