Who's gota Sprintcat!

[knpc]

This is a picture of Jay's sprintcat with the 6s packs on the tunnel.

[Rumdog]

This is a picture of Jay's sprintcat with the 6s packs on the tunnel.

lol

[knpc]

It would still be a pain to get them in and out without the rails, it's just a tight fit. I am running hyperion 6s 5000 packs so other brands may vary is size.

[Brushless55]

Here is a pic of Jay's sprintcat. Mine was set up almost identical.

hey thanks for posting your picture
we posted at the exact time!
what is your CG and in your opinion yours handles just fine on the tunnel?
Now wheres a video of this bad Sprint!

[Brushless55]

for power I'm thinking of using a CC1717 on 5s that I have lying around
or a 5692 1340kv on 6s

[Rumdog]

1527 1.5d CC hydra 240, 5s2p and a BIG prop.
Handled EXCELLENT in the turns, but you cant really tell from this vid.

NEVER came close to flipping or hooking in the turns at WOT.

http://www.youtube.com/watch?v=TqTIEOKMnTA

[jingalls007]

What's wrong with running the cells on the tunnel? Works great. Handles just as well as with them in the sponsons and they are simple to get in and out.

You'll definitely want to run the cells in the sponsons on the .21. It makes a difference with large 4s packs for sure.

[Fluid]

I've raced my SprintCat 40/60 with the 6S2P packs in the tunnel for over two years and it handles great on the 1/6th mile oval. In fact I've won half the races I've entered against sport hydros. It isn't always the boat with the highest speed which wins.

Putting the packs on the tunnel has the large advantage of being able to tie them down securely - note the straps in my cat holding them in. This can be more important than many think. Flip the boat at 60 mph and packs in the sponsons can fly loose and knock off the hatch, flooding the hull. This very thing happened last weekend to a club member's 10S mono - his were stuck outside the rails with Velcro, and a 50 mph flip sent his packs flying around inside the hull, damaging the hatch and flooding the hull.

I see not big advantage putting them in the sponsons, the boat is designed to have all the weight on the tunnel. Years ago when we raced Key West cats in the pool we soon found that putting the cells in the sponosn caused the boats to handle worse and flip more often. Moving them onto the tunnel cured the problem. Five cats were traveling over 35 mph on a tight triangular course with 70 foot straights and concrete walls on the outside - it was like driving formula R/C cars and demanded total concentration.




.

[Brushless55]

I really like the way your packs are on the tunnel, makes mounting them more secure..
Ok this asnwers my question about having enough room... yeah!
I love this place

[carlcisneros]

Hey Rum;

do you have any pics of your twin set up?

Thanks

[Fluid]

I really like the way your packs are on the tunnel, makes mounting them more secure...Ok this asnwers my question about having enough room...

The only thing to watch then is pack height. Depending on the hatch you use, some 6S packs may hit the underside of the hatch.


.

[Brushless55]

The only thing to watch then is pack height. Depending on the hatch you use, some 6S packs may hit the underside of the hatch.


.

Do you know how much room we have under the hatch?

[sailr]

Check my thread.

http://forums.offshoreelectrics.com/...ight=sprintcat

Gp to post #36. I put my batteries behind the motor. Works out great. I'm running 6S2P. Boat balances perfectly. No need to put the packs in the sponsons! The boat rides like it's on rails with my setup.

I don't believe you could get 5S packs in the sponsons. No way!

[Raydee]

I had to run 6s 4000mah packs in mine to fit under the hatch.

[Brushless55]

Check my thread.

http://forums.offshoreelectrics.com/...ight=sprintcat

Gp to post #36. I put my batteries behind the motor. Works out great. I'm running 6S2P. Boat balances perfectly. No need to put the packs in the sponsons! The boat rides like it's on rails with my setup.

I don't believe you could get 5S packs in the sponsons. No way!

thank you!
love the hatch turned like you have it