Leopard vs HK 3674's

[Hatetocrash]

That would be nice but without seeing it I will can tell you the Leopard will do slightly better. Temps may be lower and amp draw may also be slightly lower, I seriously do not think there would be a mile an hour differance if any as there are way too many other factors involved. Heck even the same boat/motor on 3 different runs will give you a different speed on each run. Bigger question is, are you willing to pay the extra $50+ for the difference. This is not medical equipment we are talking about rather toys. If you want the best then stop looking at the Chinese stuff and yes even the Leopard brand is Chinese stuff. All the NEU stuff is several times the price but design and quality control are better, still made in China though. They strive for efficiency and they say they are "up to" 10% more efficient than the competition. Again, are you willing to dish out $100+ for basically similar units. Pricing structure is between the brands all off if you ask me. Should be like this in reality. Turnigy $50, Leopard $75, Neu, $100.

Also do u think these turnigy motors 36-74-1900kv and 36-65-2200kv can handle 5s if temps are kept low by not over proping or is 15vts the max as they have printed in their stats?thanks

[Howard]

I have two Turnigy xk3665-2100 and a xk3665-2300. I ran the 2100 in my fastech with 5 cells no problem (51mph) I ran the 2300 in my modified shockwave 26 with 4 cells no problems (46.0 mph) both motors ran cool.

[Howard]

Both boats I used a octura x642 prop

[Howard]

Also my 2300 has a slotted stator. I opened it up to check it out. Does it really make a difference???

[Steven Vaccaro]

They are not from the same manufacturer.

"Why are the part numbers so similar"?

My friend once owned a Rolex, while visiting New York one day, a street peddler tried to sell him the same watch for $50 bucks, when he paid 3k for his. In amazement, he tried the watch on, the only difference was the street peddlers watch was called a Lorex. :-)

Moral of the story. There are copies of everything out there. It all depends on how much you value the original. And if you do value the original, than buy NEU!

[Hatetocrash]

I have two Turnigy xk3665-2100 and a xk3665-2300. I ran the 2100 in my fastech with 5 cells no problem (51mph) I ran the 2300 in my modified shockwave 26 with 4 cells no problems (46.0 mph) both motors ran cool.

Thanks Howard, i feel i made a good choice in ordering these motors 36-65-2200kv and the 36-74-1900 kv...How was the power on take offs with these motors? Also how big is the fast tech boat in comparison to the aquacraft motley crew?

[Steven Vaccaro]

thats over 33,000 loaded rpm and almost 40,000 unloaded rpm. A 2100kv motor with 5s and x642 should be pushing a small proboat forumla to well over 60mph. Try a smaller prop.

[Howard]

Power was awesome off the line. I stood straight up (did a wheelie) with my shockwave and flipped it the first time I gunned it. Take it easy on the throttle at first or else. The fastech is about 29 ins but it is a V as the motley is a cat.

[Howard]

Steve what smaller prop would you recommend for this setup in my Fastech?

[Hatetocrash]

Power was awesome off the line. I stood straight up (did a wheelie) with my shockwave and flipped it the first time I gunned it. Take it easy on the throttle at first or else. The fastech is about 29 ins but it is a V as the motley is a cat.

Thanks Howard...Yes i have 7 FE boats now...and i have a surge crusher on 5s which has that muscle car power u talk about...and i love it...in actual fe racing not sure it is at all necessary though..

[Howard]

I'm not sure when Steve mentions a "smaller prop" does he mean diameter or pitch smaller. Does anyone know?

[Hatetocrash]

I'm not sure when Steve mentions a "smaller prop" does he mean diameter or pitch smaller. Does anyone know?

Steve, probabely means just a little smaller pitch or diameter or both...Pitch and diameter reduction = less strain on everything and motor can acheive maxium rpm without working so hard...maybe your prop is not spinning to its full potencial...But then again u say nothing gets hot,so this tells me u are not over proping...maybe tweaking the out drive and cg,scuffing bottom might add the extra speed steve is talking about...But if u already have everything set right..i would think adding a couple of degrees in pitch would make boat hit that 60mph mark..but then i am a novice,most of what i learned so far is from trial and a lot of error...But again Batteries are a big game changer also...if u are using decent 30c packs and change to very good 50c packs u could easily gain another 4-5mph without changing anything else....Good luck

[JIM MARCUM]

I have both the HK 5692 1320KV & a Leopard 5693 1340KV. Haven't ran the HK version yet, but here a few specs:
HK T5692 1320KV: 870grams, 8mm shaft, unknwn ball bearings, vented can, $80.
Leopard 5692 1340KV: 963 grams, 7mm shaft, Japanese ball bearings, non-vented can, $158 (and rising).

I'll be testing both motors in my Aeromarine Avenger cat in a few weeks, and I'll submitt the data form my Castle HYDRA ICE-2 200 HV after this build is completed & tested. I'd test both in my 56" Segad (72+ MPH with a 5692 1090KV at last year's SAWs) & single motor, but it's squirley enough with it's strudder setup http://www.youtube.com/watch?v=IPZGtssIXyQ, so gonna rebuild it with twin 5692 1320s with stinger drives. JIM

[Hatetocrash]

I have both the HK 5692 1320KV & a Leopard 5693 1340KV. Haven't ran the HK version yet, but here a few specs:
HK T5692 1320KV: 870grams, 8mm shaft, unknwn ball bearings, vented can, $80.
Leopard 5692 1340KV: 963 grams, 7mm shaft, Japanese ball bearings, non-vented can, $158 (and rising).

I'll be testing both motors in my Aeromarine Avenger cat in a few weeks, and I'll submitt the data form my Castle HYDRA ICE-2 200 HV after this build is completed & tested. I'd test both in my 56" Segad (72+ MPH with a 5692 1090KV at last year's SAWs) & single motor, but it's squirley enough with it's strudder setup http://www.youtube.com/watch?v=IPZGtssIXyQ, so gonna rebuild it with twin 5692 1320s with stinger drives. JIM

Very Cool Boat Jim,so this boat is running on 12s? It's a monster electric cat!

[Basstronics]

I read thats a TP Power motor HK T5692

[JIM MARCUM]

I was only running 8S2P Leopard 5692 1090KV in the video & the SAWs. 8S is the max for S and 10S max for T NAMBA classes. I tried a SAW run with the 5692 1340KV, but blew up my old style Castle ICE 200 HV and never got a pass thru the lights.

Plan on running my Segad in Octobers SAWs at Legg Lake on 8S with twin 5692 1340KV motors in the S Offshore class, and 10S 1090KV motors in T Offshore class. If I need more speed in T class I'll try the 1340KV. That's beyond Leopard's rated max, but this is the world of SAW racing. I do know I'll need to hit at least 95MPH in S class and 105+ in T class. Also gonna build a smaller canopy for it & other things to reduce air drag. JIM

[Make-a-Wake]

Also my 2300 has a slotted stator. I opened it up to check it out. Does it really make a difference???

That motor is a 4 pole, and why it's slotted. The motor numbers that have a "B" in it are 4 pole, like yours: XK3665-B-2300KV Brushless Inrunner

[Hatetocrash]

I was only running 8S2P Leopard 5692 1090KV in the video & the SAWs. 8S is the max for S and 10S max for T NAMBA classes. I tried a SAW run with the 5692 1340KV, but blew up my old style Castle ICE 200 HV and never got a pass thru the lights.

Plan on running my Segad in Octobers SAWs at Legg Lake on 8S with twin 5692 1340KV motors in the S Offshore class, and 10S 1090KV motors in T Offshore class. If I need more speed in T class I'll try the 1340KV. That's beyond Leopard's rated max, but this is the world of SAW racing. I do know I'll need to hit at least 95MPH in S class and 105+ in T class. Also gonna build a smaller canopy for it & other things to reduce air drag. JIM

Sounds like U will be a force to recon with...Very nice looking boat...Maybe next year i will get a large cat project in the works or semi big like a genisis which i like quite a bit,but first i will enjoy moding and tweaking my small boats for a while..thanks for sharing

[Make-a-Wake]

Here's a photo of the Turnigy 3674 "B" series........4 pole and slotted!!

[Snowride]

Thanks for the pic, now things get a little more comparable.