YS 63 Prop Sizes
06-19-2006 | 07:38 AM
#2
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RE: YS 63 Prop Sizes
I have a UCD 46 and had a YS63 on it last fall. A 13x4w worked well. I put an OS 91 4s on it and the YS is now on a 4 lb profile Mojo. The 13x4w may be a tad light on load for the YS . It will rev into the mid 11k rpm range but on a UCD you won't dwell there and the YS can hanle 11,500 ok. The YS will pull the UCD straight up. The OS 91 is a liitle stronger. The next step up in 3d props is a 14x4 narrow which I don';t hear about and a 14x4w which is a tad too much - slower wind up from low revs when you open the throttle.
One guy who does a lot of posting on here used a 12.25x3.75 on his UCD46 with YS 63 and says he liked it better than the 13x4w. I believe you will get more thrust with the 13x4w.
One guy who does a lot of posting on here used a 12.25x3.75 on his UCD46 with YS 63 and says he liked it better than the 13x4w. I believe you will get more thrust with the 13x4w.
06-19-2006 | 08:22 AM
#3
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From: Omaha,
NE
RE: YS 63 Prop Sizes
ORIGINAL: Jack Hyde
I have a UCD 46 and had a YS63 on it last fall. A 13x4w worked well. I put an OS 91 4s on it and the YS is now on a 4 lb profile Mojo. The 13x4w may be a tad light on load for the YS . It will rev into the mid 11k rpm range but on a UCD you won't dwell there and the YS can hanle 11,500 ok. The YS will pull the UCD straight up. The OS 91 is a liitle stronger. The next step up in 3d props is a 14x4 narrow which I don';t hear about and a 14x4w which is a tad too much - slower wind up from low revs when you open the throttle.
One guy who does a lot of posting on here used a 12.25x3.75 on his UCD46 with YS 63 and says he liked it better than the 13x4w. I believe you will get more thrust with the 13x4w.
I have a UCD 46 and had a YS63 on it last fall. A 13x4w worked well. I put an OS 91 4s on it and the YS is now on a 4 lb profile Mojo. The 13x4w may be a tad light on load for the YS . It will rev into the mid 11k rpm range but on a UCD you won't dwell there and the YS can hanle 11,500 ok. The YS will pull the UCD straight up. The OS 91 is a liitle stronger. The next step up in 3d props is a 14x4 narrow which I don';t hear about and a 14x4w which is a tad too much - slower wind up from low revs when you open the throttle.
One guy who does a lot of posting on here used a 12.25x3.75 on his UCD46 with YS 63 and says he liked it better than the 13x4w. I believe you will get more thrust with the 13x4w.
I'm running a 13x4W with Coolpower 30% heli & I have it a touch rich at 11,700 & it's an absolute screamer on my profile. Love this engine
