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Redwing RC Extra 330SC 50-60CC

SnowDog

SnowDog

Moderator
I hinged the rudder and elevators last night as well...also moving on to the ailerons soon.

I'm having second thoughts about the motor choice...not because I think the GP-61 is the wrong choice...but because I compared the size of the fuselage of the RedWingRC 89" Extra to the size of the fuselage of the 3DHS 89" Slick and the Slick fuselage seems to be larger. I've got a DLE-55RA in the 89" Slick and it pulls that airframe around with authority on a 22x8 prop. I'm thinking I would enjoy the 89" Extra on the DLE-55RA and perhaps the GP-61 would be more fun (?!) in the 89" Slick? Both motors appear to be very close in terms of weight: 3lbs 6oz.

Anyone have any thoughts about this?

I also kind of like the idea of putting a known engine that is already tuned into a brand new airframe to avoid any dead-sticks that might happen while tuning the new engine...
 
gyro

gyro

GSN Contributor
I agree with your thinking, and id likely do the same thing. Also, you'll cut the cowl much less this way, and the 89" Slick is already cut for side dump too.

Also, get a 23x8 on that 55ra, 22" is underpropped. :)
 
SnowDog

SnowDog

Moderator
GYRO said:
I agree with your thinking, and id likely do the same thing. Also, you'll cut the cowl much less this way, and the 89" Slick is already cut for side dump too.

Also, get a 23x8 on that 55ra, 22" is underpropped. :)
Click to expand...

I've got the pitts muffler for the GP-61 so that is not really the issue there.

Also, I respectfully disagree on the 22x8 making the DLE-55RA underpropped...the last two weekends, I've had a deadstick on my 89" Slick right at the 12 minute mark of flying...motor flew great until that time mark, then just died, twice. After the first dead stick, I richened up the top end 1/8 turn thinking it was too lean...but then it deadsticked again the next weekend. Two very experienced gas pilots both told me it sounded as though the 23x8 VVRC prop was working the motor too hard and causing it to overheat and quit. As you know, there is not a ventilation issue on that particular 89" Slick ;) Based on their advice, I installed a 22x8 Xoar prop and the motor really came to life...everyone at the field could tell the difference in the sound of the motor, and I had two 15 minute flights with no deadstick, so I'm going to stick with experience and continue using the 22x8 Xoar on the DLE-55RA. (We can continue this discussion on the 89" Slick thread so we don't derail this one) :)
 
njswede

njswede

150cc
SnowDog said:
I've got the pitts muffler for the GP-61 so that is not really the issue there.

Also, I respectfully disagree on the 22x8 making the DLE-55RA underpropped...the last two weekends, I've had a deadstick on my 89" Slick right at the 12 minute mark of flying...motor flew great until that time mark, then just died, twice. After the first dead stick, I richened up the top end 1/8 turn thinking it was too lean...but then it deadsticked again the next weekend. Two very experienced gas pilots both told me it sounded as though the 23x8 VVRC prop was working the motor too hard and causing it to overheat and quit. As you know, there is not a ventilation issue on that particular 89" Slick ;) Based on their advice, I installed a 22x8 Xoar prop and the motor really came to life...everyone at the field could tell the difference in the sound of the motor, and I had two 15 minute flights with no deadstick, so I'm going to stick with experience and continue using the 22x8 Xoar on the DLE-55RA. (We can continue this discussion on the 89" Slick thread so we don't derail this one) :)
Click to expand...

I may try a 22x8 on my DA50. It runs fine, just a little sluggish in acceleration.
 
gyro

gyro

GSN Contributor
Mike, sounds like it's still not tuned right, or not broken in fully yet.
I was running a Xoar sword 23x8 on the old DLE 55 side dump that came with that slick when I bought it, and performance was excellent.
YMMV.
 
cardenflyer

cardenflyer

70cc twin V2
I've always ran a 23-8 on the 55 even on the DA-50. 22-10 might be ok. But a 22-8 seems way underload. My 23-8 Xion was a missle on mine. Hoping the 24-9 will be the same!
 
bbrown2828

bbrown2828

150cc
where are the vids dang. [MENTION=1185]cardenflyer[/MENTION] [MENTION=3]GYRO[/MENTION] [MENTION=2]SnowDog[/MENTION].. yall need to get these things built lol
 
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