Delta Force 33

[azjc]

of the Delta Force 33 owners what motor and prop combos are you running? I am looking more at comparasions with a Neu

[RayR]

Majority of people are runnnig either a 1515/1Y with a smaller prop
or a 1521/1.5D with a larger prop.

All the best,

Ray

[azjc]

Majority of people are runnnig either a 1515/1Y with a smaller prop
or a 1521/1.5D with a larger prop.

All the best,

Ray

what would the benifit to running a larger prop? would it be more top end

[ED66677]

generaly a larger prop will give faster acceleration, for a given hull type and size, the prop efficiency increases as the prop diameter increases too, a bigger prop will have less slip than a smaller one.

[RayR]

As well, the 1515/1Y is a 2200KV motor and the 1521/1.5D is a 1750KV motor. Total rpm's on 4S with the 1521 are less. However, the 1521 has motor torque and can turn a bigger wheel (prop) which makes up the difference. Many think turning a bigger wheel helps coming out of the turns.

All the best,

Ray

[andym]

I run a 1515 1y on 4s 1p with a hydra 240 and a m447, very sharp and cupped just a little and she flies.

[RayR]

Andy,

How much gas is left in a 1P tank after a 1 mile run? Just curious.

Ray

[azjc]

I am thinking of a combo of 1521/2.5d (1200kv) on 8s (I am a big fan of HV, getting more of your power from voltage and not amps) ...I just need some suggestions with prop size

[RayR]

Hope you have a fire extinguisher handy.

[azjc]

Hope you have a fire extinguisher handy.

I have built other HV Rc models..my latest is a 10s Revo with a 1515/2y that has similar performance to a 1515/1y on 5s but runs cooler...Is there a problem doing this with boats? When you set it up right a HV system will run cooler.

[D. Newland]

John-Where are you running in Phoenix? I need to get you on our Scottsdale Model Boaters email list, so PM me your email if interested.

My thoughts:

If you have no interest in racing, then the higher voltage route is a good one to follow because of increased runtimes (lower amp draw)-assuming you set it up that way.

With that hull, I would shoot for 1400-1500 watts. How you get there is up to you. 4S at around 110 average amp draw, 6S at 70 amps or 8S at 55 amps.

With a 4S motor selection, keep the Kv around 1800-2200. With an 8S motor, cut the kv in half.

If you ever think you'll want to run that hull around the buoys, focus in on a 4S setup. That is the most common voltage being run in that hull competitively. Also, to get a better return on your investment, focus in on a motor that can run both a 4 minute offshore heat time and 1 mi sprint race (boat should be able to run 2 min 30 seconds to 3 min's without heat issues). The Offshore 4 minute time will need to be 10,000 mah packs, but the 1 mi sprint can be done with the new 6000 mah 1P packs with success. A little more heat than a 2P setup and a little more voltage drop under load, but it's easily do-able.

The 1515 1Y is very common in 4S trim and can run both sprint and offshore heats. Also the 10 XL cans can do it, too, depending on your budget. You can go to a 1521 in that hull, but the 1515 size can seems to do just fine, from what I've seen.

[azjc]

John-Where are you running in Phoenix? I need to get you on our Scottsdale Model Boaters email list, so PM me your email if interested.

My thoughts:

If you have no interest in racing, then the higher voltage route is a good one to follow because of increased runtimes (lower amp draw)-assuming you set it up that way.

With that hull, I would shoot for 1400-1500 watts. How you get there is up to you. 4S at around 110 average amp draw, 6S at 70 amps or 8S at 55 amps.

With a 4S motor selection, keep the Kv around 1800-2200. With an 8S motor, cut the kv in half.

If you ever think you'll want to run that hull around the buoys, focus in on a 4S setup. That is the most common voltage being run in that hull competitively. Also, to get a better return on your investment, focus in on a motor that can run both a 4 minute offshore heat time and 1 mi sprint race (boat should be able to run 2 min 30 seconds to 3 min's without heat issues). The Offshore 4 minute time will need to be 10,000 mah packs, but the 1 mi sprint can be done with the new 6000 mah 1P packs with success. A little more heat than a 2P setup and a little more voltage drop under load, but it's easily do-able.

The 1515 1Y is very common in 4S trim and can run both sprint and offshore heats. Also the 10 XL cans can do it, too, depending on your budget. You can go to a 1521 in that hull, but the 1515 size can seems to do just fine, from what I've seen.

at the moment I am not interested in racing but you never know down the road maybe....Why is it that the racers run a lower voltage? .....I do have a spare 1515/2.5d laying around I was thinking about going with the 1521 size more for the performance of the boat. I still havnt gotten a boat yet.


motor wise maybe a 1521 1.5y (1050kv) on 8s would be a good match and I am interested in checking
out the club.

[Avanti]

I run a 7xl, hydra240, 4s1p 5000, x642
I have no problem hanging with the neu powered boats in our club

[Ctonez]

....Why is it that the racers run a lower voltage?

club classes are usually determined by cell count/voltage limits. The most popular are N (6NiMh or 2S LiPo) and P (12NiMh or 4S LiPo). So that's why you see alot of DF33's running 4S setups in race trim.

[Darin Jordan]

club classes are usually determined by cell count/voltage limits. The most popular are N (6NiMh or 2S LiPo) and P (12NiMh or 4S LiPo). So that's why you see alot of DF33's running 4S setups in race trim.

Hey Corey... you going to have the DF33 ready for the last race weekend coming up on the 20th??