Big hub Scat 12/17 and WW Cone combo

Mike W

Mike W

Infidel
Location
North Florida
I just started running this combination and it does not have the snap I was expecting. Would it be worth it to try the stock cone? It seems to cavitate just a little but it's hard to tell. I want to try the TBM pump cone but cant fork out that kind of $$ right now. My reduction nozzle is not bored and my ski has the typical limited setup for what its worth.
 
keefer

keefer

T1
Location
Tennessee
I installed my TBM setup with my existing Concord 13/18 and it works great. Better hook up and good snap. I am using the shortest cone with a stock 82mm nozzle. I borrowed sjetriders Skat C+75 13/18 mag prop with the big hub that matches the TBM main body diameter size. I did not like it, I noticed a big difference in power delivery. It seemed to put a serious damper on my low-mid power. The Skat Mag prop is alot heavier than the Solas so I am sure there is some extra flywheel weight effect also. The Skat had better hook up but the power loss was not worth it. I plan to have my concord cut back 3mm this winter to improve the hook up even more. Ride my boat when you get up here in Aug. :biggthumpup:
 
F

FL-cracker

X-H2O
Location
old exit 72 Melbourne
keefer said:
I installed my TBM setup with my existing Concord 13/18 and it works great. Better hook up and good snap. I am using the shortest cone with a stock 82mm nozzle. I borrowed sjetriders Skat C+75 13/18 mag prop with the big hub that matches the TBM main body diameter size. I did not like it, I noticed a big difference in power delivery. It seemed to put a serious damper on my low-mid power. The Skat Mag prop is alot heavier than the Solas so I am sure there is some extra flywheel weight effect also. The Skat had better hook up but the power loss was not worth it. I plan to have my concord cut back 3mm this winter to improve the hook up even more. Ride my boat when you get up here in Aug. :biggthumpup:
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What motor are you running?

I am running the C-75 12/17 with TBM and it hits pretty freggin hard with my 780cc TLR flattop motor..... I have a 13-17 concorde in my garage, maybe I will have to give it a try.
 
Mike W

Mike W

Infidel
Location
North Florida
Keith, So what your saying is you didn't like the big hub Scat? I checked my carbs yesturday and found out my front carb was way off on the h/s. I must of turned it the wrong way when I made some adjustments to it last week.:bad3: Maybe that was the reason. I will be up there the weekend of the 18th so see you guys then.:biggthumpup:

Cracker, I'm running a 62T with stock porting, dual 38's, Limited B pipe and ADA head (35cc domes) and stock electronics.
 
keefer

keefer

T1
Location
Tennessee
FL-cracker said:
What motor are you running?

I am running the C-75 12/17 with TBM and it hits pretty freggin hard with my 780cc TLR flattop motor..... I have a 13-17 concorde in my garage, maybe I will have to give it a try.
Click to expand...

I am running a 62T case ported, 61x cyl at 84.25mm with moderate freestyle porting. 46mm dual carbs on a Boyesen intake with Boyesen CF reeds. B pipe mod chamber & MSD enhancer. It rips on bottom and has great overall power with the TBM & Concord. The 13/18 mag prop seemed to put a damper on that initial hit and dampend power througout the whole RPM range. Maybe if it had been pitched lower it would have helped. I think the mag weighs about 2.2lbs where the Concord is around 1.5 or so. This was the single most noticeable power delivery difference I have seen, second only to going from a stock to B pipe. If I had your HP I am sure that would work a lot better. Wanna trade motors?? :fingersx:
 
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Legdrag's

Legdrag's

X-
Location
West Palm Beach
The 13/18 is to high but works great for the strokers.

The concords (13/15)&(13/17) seems softer in throttle response then the 12/17's BH both tested with TBM.

I do have different weights. One concord is 2.0 lbs. even & the other 13/17's is 2.3 lbs. The skat 12/17 Mag is 2.2. which is the same.

Mike- Do you what to try the TBM? :sneaky: I have an extra to try out.
 
F

FL-cracker

X-H2O
Location
old exit 72 Melbourne
keefer said:
I am running a 62T case ported, 61x cyl at 84.25mm with moderate freestyle porting. 46mm dual carbs on a Boyesen intake with Boyesen CF reeds. B pipe mod chamber & MSD enhancer. It rips on bottom and has great overall power with the TBM & Concord. The 13/18 mag prop seemed to put a damper on that initial hit and dampend power througout the whole RPM range. Maybe if it had been pitched lower it would have helped. I think the mag weighs about 2.2lbs where the Concord is around 1.5 or so. This was the single most noticeable power delivery difference I have seen, second only to going from a stock to B pipe. If I had your HP I am sure that would work a lot better. Wanna trade motors?? :fingersx:
Click to expand...

Ahhh no thanks :biggrin:
 
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