Solas Scorpion prop test

**dnelson964** · 07-24-2015, 07:24 AM

Originally Posted by dnelson964

Update:

Since this scorpion handled so well I am going to let my propman cut and work it to see if we can't make it a better runner !

I have tried a lot of different props and varied set-up back and forth with changing results trying to find the best "overall" for most waters. My fastest speeds have always been with a props that has been 'worked' from stock.... oh, except for one or 2 that were custom to start.

I now have a few 'go to' props but like testing still because you never know.

**endabran** · 07-24-2015, 05:12 PM

Click image for larger version.

Name: 20150409_173314.jpg
Views: 67
Size: 404.2 KB
ID: 324148

yep basically the same boat

**dnelson964** · 07-25-2015, 05:04 AM

Originally Posted by endabran

yep basically the same boat

You do look similar from here.

Update....... I am going to pick up the cut down Solas Scorpion today. I was told it measured to 30.5" on the tip and it now has lost 1/2" of pitch on the bottom-middle of the blades. It expect it measures 14.75" dia. now and I'm interested to see how it will perform comparatively to a couple yamaha T1's I have run that have proven to be excellent on my boat.

So if anyone is looking to buy a new Scorpion rule of thumb is expect they run a 'stiff' 2.5" pitch more out of the box !

**Greg G** · 07-25-2015, 08:29 AM

Originally Posted by dnelson964

So if anyone is looking to buy a new Scorpion, rule of thumb is expect they run a 'stiff' 2.5" pitch more out of the box !

Wow, +2.5"!

Great info, I almost bought one yesterday that would not have worked based on that. Thanks

**Greg G** · 07-25-2015, 08:33 AM

Does the Solas run it's own proprietary hub kit or can you use Flo Torque kits?

**dnelson964** · 07-25-2015, 09:40 AM

Originally Posted by Greg G

Does the Solas run it's own proprietary hub kit or can you use Flo Torque kits?

It takes a 'Flo torque hub'. I Need that also to run my Fat shaft and yami T1's are only pressed in hubs for standard shafts hence my desire to check into them.

Here is my now custom cut, 14.75" 28. If you look at the trailing edge cup you can see how steep it is and that is stock ! The area just below the cupping measures 28 pitch and that's how they sell the pitch size. Pitch starts low down on blade as a 26 or less and has alot of rake. Also had 1/8" trimmed off leading edge which also depitched about .5" the low to middle area. Soon see what changes this makes.

I

we will see.....

**endabran** · 08-02-2015, 05:22 PM

well? am i sending my prop to your guy?

**dnelson964** · 08-03-2015, 07:36 AM

update...New Cut W/Added 3- 5/8" PVS holes so I can adjust hole shot (take cheap hardware store plastic snap in plugs in 1/2" size to close or drill now for adjustment)

2 aboard, 3/4 tank fuel.....

80-82 degrees, 5-10 mph winds,too choppy to run full out however short burst ran 84.5@5600. Bites still very hard still, lift is great, holds nose high with good feel of stern control. (calc. slip around 8.5% for a 30.5 pitch makes most sense). Should be a good top end prop now also just have to do that some other time.

PVS holes were all open but now too much ventilation, hole shot spun motor spun over to 5500 before bite and grip. I think 3-1/4" holes might be enough now after trimming blades.

Can't test now for awhile but the cut worked out well. Went 1.6 mph faster@5600 with more weight aboard.

**Greg G** · 08-03-2015, 10:18 AM

Originally Posted by dnelson964

update...2 aboard, 3/4 tank fuel.....slip around 8.5% the cut worked out well. Went 1.6 mph faster@5600 with more weight aboard.

You have to be happy with these results. I'd love to see you throw a totally stock Merc Rev4 on to gather another set of comparative data points.

**dnelson964** · 08-03-2015, 11:07 AM

Originally Posted by Greg G

You have to be happy with these results. I'd love to see you throw a totally stock Merc Rev4 on to gather another set of comparative data points.

Send me one and I will try it.....

**endabran** · 08-09-2015, 02:49 PM

D how far back is your motor,i tried 1 3/4 above with 12 inches back and it was to far wouldnt lift the boat.Even to slightly above seems to be the sweet spot

**allstock** · 08-09-2015, 03:49 PM

Yes lots of experience with them and on my rig they run 2-2.5" stiff. Slip runs 3% so clearly they are under rated on the pitch scale. I stopped blowing my horn on these a few years ago because all I ever heard was "oh they are cheap offshore prop gotta run a merc prop BLa Bla Bla....." I've run them hard for three years never cracked never thrown a blade and fastest numbers on my rig by far. I had my local prop guy drill them for PVS plugs which work great.

**dnelson964** · 08-09-2015, 10:31 PM

Originally Posted by endabran

D how far back is your motor,i tried 1 3/4 above with 12 inches back and it was to far wouldnt lift the boat.Even to slightly above seems to be the sweet spot

Run what 'your' boat likes as it's sweet spot.

If you run a coned lower w/ low water pick-ups I would guess 3/4"-1.25" tops. If its a torque master then lower of course.

I run a coned lower and W/Hydraulic Jackplate so dial it in as I run. Changes for each prop and water condition usually.

**dnelson964** · 08-09-2015, 10:36 PM

Originally Posted by allstock

Yes lots of experience with them and on my rig they run 2-2.5" stiff. Slip runs 3% so clearly they are under rated on the pitch scale. I stopped blowing my horn on these a few years ago because all I ever heard was "oh they are cheap offshore prop gotta run a merc prop BLa Bla Bla....." I've run them hard for three years never cracked never thrown a blade and fastest numbers on my rig by far. I had my local prop guy drill them for PVS plugs which work great.

Same as I discovered off the bat....thanks for sharing.