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SlickZERO
04-10-2015, 02:36 PM
I am converting an old Dumas Hot Shot IV 28 1/2" tunnel to electric. (Just for fun). I want to buy the ProBoat OutBoard Leg. Will the Leopard 3650 fit? I have a Lucas Oil Cat running a 3656 1800Kv with Octura X442 props on 4 cell. I was thinking of trying one of the props with the Leopard 3650 1840 Kv motor on 4 cell. Any advise would be appreciated before I order.

JimClark
04-10-2015, 02:40 PM
Why the proboat leg?

trigger
04-10-2015, 02:44 PM
It would fit, but you have to have access through the black cover for the motor wires to couple to the ESC also a water cooling exit.

SlickZERO
04-10-2015, 02:53 PM
Actually because I like the look of it. Not going to race it.

SlickZERO
04-10-2015, 02:54 PM
Thanks, that wouldn't be a problem.

Darin Jordan
04-10-2015, 04:44 PM
Yes... it will fit...

And to note... the lower uses standard K&B Style propshafts (I'd recommend the Hyperformance RC units) and standard K&B sized flex cables...

Have fun...

SlickZERO
04-10-2015, 07:34 PM
Yes... it will fit...

And to note... the lower uses standard K&B Style propshafts (I'd recommend the Hyperformance RC units) and standard K&B sized flex cables...

Have fun...
Is that the cable for the 3.5 or the 7.5/11cc K&B outboard?

Darin Jordan
04-10-2015, 08:10 PM
3.5

Darin Jordan
04-10-2015, 08:13 PM
And... for the record, the ProBoat lower, which I did the design work for ( hand drawn engineering drawings... ;) ) , is very similar in operational dimensions to a standard OS lower. If you take away the exterior look, then the remainder is like any other competitive lower.

SlickZERO
04-10-2015, 08:20 PM
Thanks! I was looking for something that looked good and would be reliable.
And... for the record, the ProBoat lower, which I did the design work for ( hand drawn engineering drawings... ;) ) , is very similar in operational dimensions to a standard OS lower. If you take away the exterior look, then the remainder is like any other competitive lower.

Darin Jordan
04-11-2015, 08:44 AM
Thanks! I was looking for something that looked good and would be reliable.

I would HIGHLY recommend getting this propshaft once yours wears out:

http://hyperprod.bizhosting.com/psa35.html

http://hyperprod.bizhosting.com/cgi-bin/image/templates/PSA.jpg

It has about 1/4" longer shaft, and will likely be the last one you need to buy.

Otherwise, just keep the cable lubed and make sure everything is lined up (motor with cable) and you should be trouble free.

OH, make sure that you adjust the coupler, or the length of the flex, to allow for just a LITTLE bit of float of the cable into the square-drives. In other words, don't JAM the cable up into the coupler/propshaft when it's tight. Better to have just a slight amount of end-play.

SlickZERO
04-12-2015, 07:07 AM
I don't see a cell count for the Leopard motors. I have about a dozen airplanes and their motors list acceptable cell count. 2 to 3, 4 to 6, etc. Can I run a 5 cell with the Leopard 3674 1400 Kv? That would keep the theroritcal RPM to 25,900.

revoltrunner
04-12-2015, 07:34 AM
Here's the Leopard chart for the 3674
http://www.leopardhobby.com/proviewen.asp?id=1095&sid=1&gid=70&pt=3

Luck as a Constant
04-12-2015, 08:04 AM
I don't see a cell count for the Leopard motors. I have about a dozen airplanes and their motors list acceptable cell count. 2 to 3, 4 to 6, etc. Can I run a 5 cell with the Leopard 3674 1400 Kv? That would keep the theroritcal RPM to 25,900.

With ease buddy.
I ran the 3674 1700kv on 5s for years. It was a killer combo. 1400 would be better on 6s imo


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SlickZERO
04-12-2015, 05:29 PM
Thanks for the link and information. I'll probably go ahead and get one now.
I would HIGHLY recommend getting this propshaft once yours wears out:

http://hyperprod.bizhosting.com/psa35.html

http://hyperprod.bizhosting.com/cgi-bin/image/templates/PSA.jpg

It has about 1/4" longer shaft, and will likely be the last one you need to buy.

Otherwise, just keep the cable lubed and make sure everything is lined up (motor with cable) and you should be trouble free.

OH, make sure that you adjust the coupler, or the length of the flex, to allow for just a LITTLE bit of float of the cable into the square-drives. In other words, don't JAM the cable up into the coupler/propshaft when it's tight. Better to have just a slight amount of end-play.

SlickZERO
04-12-2015, 05:34 PM
Thanks! Looks like voltage isn't a problem. Just stay withing the maximum amps.
Here's the Leopard chart for the 3674
http://www.leopardhobby.com/proviewen.asp?id=1095&sid=1&gid=70&pt=3

SlickZERO
04-12-2015, 05:36 PM
Thanks, I have 5 cell batteries from my airplanes. What kind of boat was it? Do you remember the prop?
With ease buddy.
I ran the 3674 1700kv on 5s for years. It was a killer combo. 1400 would be better on 6s imo


Sent from my iPhone using Tapatalk

SlickZERO
04-12-2015, 05:38 PM
New to this. Don't know why this was moved to RTR Fast Electric Talk. I am building a Dumas Hot Shot IV wood boat, Proboat outboard, with Leopard motor.

SlickZERO
04-12-2015, 05:57 PM
Will the Leopard 3674 Motor fit inside the Proboat Outboard Motor cover?

Luck as a Constant
04-12-2015, 10:39 PM
Thanks, I have 5 cell batteries from my airplanes. What kind of boat was it? Do you remember the prop?

http://youtu.be/mYWeEdz-Keo



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SlickZERO
04-13-2015, 07:00 AM
Thanks, nice video. Looked really fast. Sorry I couldn't hear the prop size. My speaker is pretty bad.
http://youtu.be/mYWeEdz-Keo



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SlickZERO
07-25-2015, 11:57 AM
Does the shaft run in a teflon tube or just in the aluminum housing? Are the 2 little Allen set screws in the sides of the lower unit for injecting grease? Like with the Pro Boat grease gun?

shua
07-25-2015, 02:54 PM
The stock shaft runs in a Teflon tube and the Allen set screws in the lower unit are there to let water out of the leg only. Many us us removed them and left them out.

SlickZERO
07-30-2015, 10:07 AM
The stock shaft runs in a Teflon tube and the Allen set screws in the lower unit are there to let water out of the leg only. Many us us removed them and left them out.

Thanks for the information. I took them out and no water came out. There was a little grease on the tips of the Allen screws which lead me to believe there was no teflon tube. I remove the flex shaft after each day of running and the grease is kind of black but no water noticed. I think I will run with them in and take one out to check for water after running. It runs smooth and pushes an old Dumas Hot Shot IV 43 mph on 4 cells with an Aquacraft 36-56-1800Kv and a X442 prop.