bobs cone vs. hydromotive cone

[action20]

I'm setting up my vindicator with a nose cone. Does anyone have an opinion on which nose cone is better ??

The hydromotive looks as it would have less drag at a more positive trim angle ??

any feed back would be helpful.

Scott

[300x Stoker]

We decided to try the Hydromotive on one of the OMC's we used to run. It seemed to work just as well as any of the others we tried. All our testing was below 80 mph though. I don't see how you could go wrong with a Bobs'.

[Hydrovector]

I have one on my Euro and it seems to work good. I never had any problems with running it and it runs 93 with a 200 merc.

[Riverratt]

I have a hydromotive and I don't have any complaints with it.

[Ally 1988]

But one by Tooters (J&J Marine) might worth a try as well. Have tried Bobs and cant say anything bad about it just thought I would mention the above.

[Charlie M]

Have both, with the real high transom height I don't think you'll see any difference between either, at least on most boats that really need a nose cone.

[pyro]

What you said is exactly right regarding the drag associated with positive trim. Nocesones have a tendency to kill bow-lift on heavy long hulls that require a little positive trim. The bullet on the Hydromotive is like a vertical oval rather than round at the tip. It's not swept as much, so the top side of the bullet is not as broad and round. It is best suited on 20 foot + hulls that are expected to surpass 85 mph. At speeds undet 85, any kind of nosecone will hurt performance. Besides, these long heavy hulls don't need to run the prop a little deeper to maintain the bow-lifting bite, enough to where the low water pickup may not be needed.

short and light, 85+ cone it!
long and heavy, under 80, keep it stock!
long and heavy, over 85, cone it!

For light fast hulls, most people say the Bob's is the fastest of the cone designs. I have the Hydromotive, but I've never run anything else on this hull. I would love to try a stock case sometime....

[action20]

Hi,

which one is faster ?? better water pressure ??

any feeback on either. i'm putting a nose cone on on my yammi this fall and i was leaning towards the hydro motive

anyfeed back would be great.

[action20]

Thanks for the feed back.

I realize speed wise i will not need a nose cone. My boat will not exceed 85 MPH in stock form.

However to run this boat at the proper engine hight i need a low water pick up.

I feel when it is all said and don i will be running high 70's maybe crack 80 if i'm lucky.

I think i will go with the hydromotive for the simple reason that i have a bow rider and the weight in the front may hurt me.

Thanks for the feed back everyone !

[Steven]

with my 19 liberator and a 200 merc. dont need it for speed, low 80s, but i need it for the lwp. any other options that may be better? i think i have heard somewhere of another type lwp that does not require all the work of installing a nosecone :confused: :confused:

[Corona Mike]

Bob's machine shop use to--I beleave they still do--offer a transom mount water pick-up. It was made of 1" square tubing cut at a 45deg. angle with a adjustable bracket. You still had to run a pick-up hose into a threaded fitting into the water pump housing area--same place frount fitting is on a low water pick-up nose cone. As far as one nose cone verses the other, the hydromotive cones don't work that well on my Allison due to their length and shape. The bob's cone is the longest after market cone offered, and for the V-bottom boats that are sensitive to length/shape It is the fastest. All a nose cone is is a tuning device. If your boat needs one to go faster than you are running at this time, you only have three choices. #1 nose cone, #2 blow-out ring--still making the gear case longer just the other way, #3 smaller diamater case--XR_4/6 case. Rickracers handles a full line of Bob's machine shop items. Hope this helps. Mike T.

[pyro]

Holy crap, heck of a delayed reaction. I posted that reply above over three years ago!

[Hydropromax]

I have a BOB's on my motor and it has plenty of water pressure and my prop shaft is abbove the pad. I have only dealt with Hydromotive propellers not there nose cones.

[Richard]

I bought a hydromotive because it gives you more of a low water pickup capability than a nose cone. I think the shape is better suited to my application since i don't run over 70 mph. I also have a hydromotive prop. good people to do business with. no complaints about the nose cone. it was easy to install and has worked well for me over the past three years. good luck.

[Sam Baker]

Hot Boat or Power Boat (can't remember which right now) did a story comparing a Bob's to a HydroMotive to a stock CLE and the Bob's was the fastest. The HydroMotive was close and the CLE was pretty far off the pack. Water pressure was similar I believe. HydroMotive's theory of design is solid that without having the point like the CLE or Bob's does actually keeps the point of attack thin. They've been boat racers themselves through the years so they're very knowledgeable and great people to do business with.

We always used Mazco's Nosecones. I don't think John installs them but they always worked great and were faster than the Bob's Noseconed gearcases we did. At the time, Bob's didn't offer a dual-hose nosecone, but they do now. I liked that the Mazco had dual hoses just in case something got clogged in the external hosing.

[Outlaw Too]

I sent a lower to Bob's to have a nose cone put on. They told me a week and it took almost 2.4 weeks. Then when I got the lower back the closed up the fill hole for the lower. When I questioned them they said that it must have slipped through the cracks. I had to send it back and wait another week for it to be repaired. No offer to reduce the cost or anything. I got it back the last time and the paint job looked like crap! No Bob's for me. They suck!!

[johnt]

Titus Grisham does nice work, he took the old Tooter's business, he also welds the nose cone one all the way around and no external water hoses..

[Capt.Insane-o]

My recently installed Bob's cone came off at 9400 rpm. The resulting ride was not a fun thing...............

[annie]

pyro, why would you worry about a nose cone if you run 80.6?? you sure don't need one of those at that speed! :D

[INXS]

Wasn't Bobs company sold recently???

[annie]

Yes, that is the MAIN problem with Bob's machine shop.Bob Icenogle (Bob) is no longer with that buisness. There has not been any quality control/customer care since he has been gone!! I've known him since the buisness started, and he is MISSED by all!!--Mike Tyler (Corona Mike ;) )

[lokinutz]

Hey johnt...(or anyone)
Do you have contact info for Titus? Need to have a nosecone put on a CLE. Thanks.

[ragtopvet]

http://www.low-h2o.com (http://www.low-h2o.com/)

256 272-0500
I talked with him today,$600 to put nocecone on, a very good looking unit,and about 3 to 4 mph faster (than stock sportmaster)depending on setup.Mines headed that way!:) :)

[pyro]

pyro, why would you worry about a nose cone if you run 80.6?? you sure don't need one of those at that speed! :D

I don't worry. It got it that way. It was an original dealer installation from 1989. Always been there. I like having the cone just for the versatility in terms of height.

Blowout speed for a stock merc lower is in the low-to-mid 80's. A little crabbing and/or excessive trim increases the risk.

The 80 mph pass was with the propshaft dead-even with the pad. Show me a stock lower unit that will maintain water pressure at that height. Better yet, show me a prop that will let a 200 push a Vegas to 80 with the lower buried deep enough to maintain water pressure.


-Chad

[Corona Mike]

Actually some of the new model gearcases that have the water inlets in the frount of the case--I beleave it's the new torque masters--you can run that high. I don't know if you can get that case on a 2.5--200, but I have seen them on the new 250 optimax that comes out of hi-performance. As far as the props. There are quite a few T/E props out there running very good #'s. The "can" on the T/E prop does the same thing as the nose cone--except for helping the ability to raise the motor without loosing water pressure--it extends the case area and raises the blow-out speed. That was me on annie's computer. I was just messing with you. :D Peace! Mike T.