First Cat 36'' Sprint Cat

[DISAR]

Just for information, I checked mine and two 6s lipos do not fit on the tunnel due to height problem, hatch does not close. Only one can fit in the center

[Fluid]

What cells are you using Dimitri? I can fit two FlightPower 6S1P 4500 30C packs on my tunnel - and I glued a platform on the tunnel for them too. They go in the same place as the 4S packs shown in the photo. It is a tight fit, but the Classic hatch fits perfectly. I've made 80+ mph passes with that setup, and blown off too. My packs are not square, they have to be placed on the sides of the cells to fit under the hatch.


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[knpc]

I got the hatch and some other misc parts today. I plan to do some cosmetic modifications to the hatch to make it a bit better looking. The only thing I don't have yet is the motor, unfortunatly ose is out of stock so I may have to try to find one elsewhere. If anyone has a 1521 1.5d they don't know what to do with I can give it a good home. I'll post some pics of the hatch progress later.

Kevin

[DISAR]

What cells are you using Dimitri? I can fit two FlightPower 6S1P 4500 30C packs on my tunnel - and I glued a platform on the tunnel for them too. They go in the same place as the 4S packs shown in the photo. It is a tight fit, but the Classic hatch fits perfectly. I've made 80+ mph passes with that setup, and blown off too. My packs are not square, they have to be placed on the sides of the cells to fit under the hatch.


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I have the Zippy Flightmax 6s1p, 5000 mah 25c, it is square abt 2x2" (50x50mm) with the turbine cowl they do not fit

[DISAR]

I got the hatch and some other misc parts today. I plan to do some cosmetic modifications to the hatch to make it a bit better looking. The only thing I don't have yet is the motor, unfortunatly ose is out of stock so I may have to try to find one elsewhere. If anyone has a 1521 1.5d they don't know what to do with I can give it a good home. I'll post some pics of the hatch progress later.

Kevin

Why don't you go for the 1527 1D, or 1.5D or 1y? Most sprintcats of this size have them and only 15$ more.

[knpc]

The main reason was because I already had the esc and lipos. The esc is a cc lv240 and all my packs are 4s. That limits me to either the 1521 1.5d or 1527 1d to keep it in the right rpm range. The 1521 1.5d will put me around 28,000 rpm and the 1527 1d would be about 32,000 rpm. I'm not sure how many more amps the 1527 would draw over the 1521, both are d winds so they draw alot anyway. If I could still safely use to cc240 I wouldn't be opposed to the 1527. Anyone know if both motors would be ok given the other components? Let me know your thoughts, I haven't worked with motors this size till now.

[DISAR]

Here is from another racer
"I run my 1527 on 4S2P with a Hydra240 in a 35" sprintcat propped with a X450. It absolutely FLIES, no heat issues whatsoever, and can still prop up."

http://www.rumrunnerracing.com/feforums/showthread.php?t=25522&highlight=supercat+neu+1527

Running 1527/1D 4s2p hydra 240

[Fluid]

Why don't you go for the 1527 1D, or 1.5D or 1y? Most sprintcats of this size have them and only 15$ more.

Where did you hear this information? Most 4S race boats run the 1515 or 1521-sized Neu motors, IMO the 1527s are better for 6S and up. The 1521s are plenty of power without drawing excessive amps - my P Sport Hydro pushes 60 mph in a race heat with a 1521/1.5D and no excess stress on the Hydro 240, etc.

When I tired a 1527/1D in the same boat on 4S it was only a bit faster but amp draw was much higher. You 'pay' more for the 1527 when you buy it and when you run it. The 1527-format motors are best suited to higher voltage setups, or SAW applications. This is where most are used. The quoted racer gives bad information IME, everytime I try to duplicate what he says is a great setup - I get excessive heat and amp draw. When I tried to contact him to discuss his setups, he refused to answer my e-mails and PMs. You can't beleive everything you read on the Internet. Choose your "experts" carefully.

I checked mine and two 6s lipos do not fit on the tunnel due to height problem, hatch does not close. Only one can fit in the center...I have the Zippy Flightmax 6s1p, 5000 mah 25c, it is square abt 2x2" (50x50mm) with the turbine cowl they do not fit .

Not everyone runs Zippy packs - and while they are great sport or LSH racing packs, I would not recommend them for a high amp draw application.


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[DISAR]

Never questioned your experience and I believe that you are one or even the most experienced FE boater here who wants to help other people too, really appreciate and not many do that because of various reasons. I just have not read anything about a 35" sprintcat with a 1521.
I ordered 2 Flightpowers to fit in there since it is matter of some milimeters and I am not a racer, just like building and running an r/c fe boat. It's a disease.
Mr.Jay I don't believe everything I read, just collecting information. Probably you were running RC boats while most here played with Playmobil. I truly appreciate your responses because experience cannot be learnt.

[knpc]

With that being said it seems that sticking with the original plan of a 1521 1.5d is the way to go. I'd rather a more reliable setup than a few extra mph. I'll keep looking for one or maybe OSE will have them in soon. Thanks for the help guys.

[Fluid]

Dimitri I was not meaning to upset you, I just hate to hear bad setup information perpetuated. There is a lot of that on the 'net, even on this board, and it does little to help the hobby. Things like imagined GPS speeds, impossibly low temperatures and the use of 60 amp ESCs on 150 amp setups can lead many newbies - and some experienced FE boaters - to a wrong and costly conclusion.

There is no real way to police the BS that's posted, the best way is to be very specific when anyone posts a setup. Simply leaving out the exact run time can be misleading; if I post saying that my DF33 runs a 7XL on 6S with an x445 and doesn't get hot - but leave out that I only run for 30 seconds at at time - have I helped anyone?

I don't pretend to know everything about the FE hobby, and I can certainly make mistakes. But I do try to be as honest and informative as I can be to help the hobby grow and thrive.



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[knpc]

This hatch mod has been a lot more work than I thought, but its getting there. I cut out the center of the hatch, fiberglassed the section, and formed a cockpit out of foam. Now comes a lot of filling and sanding. I hope its worth it in the end, I wanted something more sleek and current looking than the factory hatch.

[knpc]

pics

[H2OCamel]

Nice mod on the hatch I will have to make one for my sprintcat.

[knpc]

Thanks. I got a chance to spray the base coat today. Tomorrow I should be able to add the white. You can tell this is the first boat I've painted. Its a 5 to 10 foot paint job, any closer and you can see all the imperfections.