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Jack plate clearance?

OldSchool

Member
Has anyone had a problem with jack plate clearance when motor is titled full up while towing? While rigging my pulsare, I noticed that with the CMC 5.5 jack plate, that the dual cable steering bracket comes in contact with the back of the cmc plate. This usually happens when about half way tilted. The only options I see is, don't tilt all the way up or move the motor to the highest mounting position on the plate (this would put you in a high position without the possibility of going low if needed. Any thoughts? OldSchool
 
Has anyone had a problem with jack plate clearance when motor is titled full up while towing? While rigging my pulsare, I noticed that with the CMC 5.5 jack plate, that the dual cable steering bracket comes in contact with the back of the cmc plate. This usually happens when about half way tilted. The only options I see is, don't tilt all the way up or move the motor to the highest mounting position on the plate (this would put you in a high position without the possibility of going low if needed. Any thoughts? OldSchool
 
I had my 225 Promax 2.5 mounted high on the CMC plate, and when the CMC plate was lowered all the way down it put the propshaft 4" below the pad. Plenty low enough. And with the motor mounted way up on the plate, I had no clearance problems when tilting the motor.
 
Let's see if this free pic hosting site is working for me. Here's a shot of my Promax/Pulsare before I removed the CMC jackplate and installed a 9.5" RapidJack Heavy Duty jack plate:


sideofmotors7fs.jpg


As you can see, the motor is mounted 'all the way up' on the highest setting on the jack plate. With the jack plate adjusted all the way down like you see here, the propshaft was about 3.5" to 4" below the pad. Deep enough for ski/tube duty.
 
JW, thanks for the pics. It really helps to see a picture. This must be the common answer, because I can see a problem with either a hydraulic or dual cable setup. Thanks you for your help, Oldschool
 
Hey guys! Here's a pic with the better jack plate I mounted later:

1080838img6ns.jpg


Also note the perfect hull placement on the trailer. Trailer adjustment has been a question before, here's what it SHOULD look like. As you can see with the RapidJack, the motor is now mounted lower on the plate as compared to the CMC. Basically a 'second hole' installation, which is typical of most outboards for all around use. The RapidJack only allowed a 3.5" verticle travel, so placement was more critical than the CMC which allows almost 6" of travel.
The lower unit you see here is called the TorqueMaster. The TorqueMaster is probably the best 'checkmate' lower unit available for boats that don't exceed 85 mph. It has heavy duty internals, and only 4 water inlet holes mounted low so that the lower unit can be run fairly high without modifiying for LWP.
The RapidJack I used here has a stainless steel plate under it that closes off the bottom of the jack plate, used as a planing aid.
 
I INSTALLED BOB'S MACHINE SHOP 2" SPACERS BETWEEN THE MOTOR AND THE JACK PLATE. THIS NOT ONLY INCREASED MY SETBACK BUT AIDED IN CLEARANCE OF THE STEERING RAM HYD. FITTINGS FROM HITTING THE GLASS IN THE SPLASHWELL WHEN THE ENGINE IS TILTED UP AND THE JACKPLATE IS DOWN.
 
I reset the engine to the highest mounting hole, it gave me about 5 vertical inches to the propshaft from the pad. I think this will be ok setup. OldSchool
 
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