Castle Creations 1520 vs 1717?
 

I e-mailed Castle Creations, asking whhich of these I should put in my GST 7.7 brushless conversion, and Greg recommended the 1520. I plan to run on 6s with the Mamba Monster ESC.

But, isn't the 1717 larger and more powerful?

I think its larger by volume- not massively more powerful, but it would be the better choice for a heavyweight monster like the GST. Thats assuming it will fit- that larger diameter may limit your gearing options depending on the design of motor mount you plan to use/ make.

The 1717 is 70g heavier so it can handle more power than the 1520, meaning that the 1717 would run cooler and more efficient for your application. But like suicideneil said it's larger and gearing can be difficult.

Hmm.. What about the 1524 or the 1527? Will a Mamba Monster ESC be able to handle either of those at 6s?

And as for motor mount.. I've asked Mike, but haven't gotten a reply yet. Do you know where else I can get someone to make me a motor mount/a mount that will fit the Neu motor?

In 1/8 scale vehicle yes, unless your geared your vehicles for 90 mph, those longer motor wont draw more current than the smaller one, but will run cooler and more efficient for the same top speed. Check the dimension available in your motor mount, but the neu 1524/1Y in 6S with the Mamba Monster ESC would be a great choice.

Yeah, the 1524 looks pretty good. I will start with a loow pinion anyhow, and go from there.

1524 has the same diameter as the 1515 as well, so I can just plug it into my Flux too.

But, I can't find the 1524/1y anywhere. Castle Creations seems to take several weeks to ship out?

try maybe off shore electrics.

They only have the 2550kv one. :(

By the way, how do I figure the 1527 isn't too powerful for the Mamba Monster esc on 6s?

The Max amp burst draw of the 1527 is 130. Not sure what the burst on the Mamba Monster is, but its at 120 continous..

But with either the 1524 or the 1527, I can just buy the regular Flux mount and drill new holes in the GST. Much simpler than the 1717 installation.

The power you consume doesnt depend of your motor, but of your application. Put a 1527 in a 1/10 scale vehicle, it will consume less than 30 amps continous (geared for standard speed).
If you use the 1527 at its maximum power, of course it will be a little too much for the MMv3, but using the 1527 at its max mean geared your truck for 90-100mph for example.
Geared for the same speed, a 1520/1Y or a 1527/1Y will consume exactly the same amount of current, the 1527/1Y will consume even less because little more efficient.
The 120 amps of the mamba motor is the max current the motor can consume, but in fact it never consume that current continuous. See the point too, that a 1515/1Y or a 1512/1Y or a 1520/1Y is given for the same max current, that's because the 3 motors have the same widing configuration (wires thickness and Y widings) so you can imagine that a 1527/1Y would have been the same ;)

Ah, ok, thanks a lot. This is why I'm worried about it, though; http://rc-monster.org/forum/showthread.php?t=19315

He burned up the MMM ESC with the 1527

But, I'm going to gear it for 35-40mph or so at first. And perhaps go faster if it handles that easily.

So, I guess I'll buy the 1527 with the Mamba Monster -- I can't get ahold of the 1524 anywhere.

LOL
This guys use a 1517/1D 2300Kv, in 6S on a small track !!! For your information the 1515/1D is rated for 4100Kv...
1D widings requieres a looooot of current at startup compare to 1Y, more over using it in 6S generate even more current spikes..
The 1527/1Y is around 1000Kv, 1524/1Y 1360Kv so if you dont gear your truck for 80mph it would be OK. Don't hesitate to ask the castle support if the MM can support the 1527. You will probably same kind of response, small Kv and 6S with correct gearing.

I put in an order for a 1524 1y a couple of weeks ago. I was guessing it had roughly the same power rating as the 1717 but without the gearing issues. I think you will be very lucky to find one ready to ship, and if you do you might as well have waited for a new one.

Ah, ok. I didn't think 2300kv was that high, but when compared to the 1515 it is quite high.

Anyhow, I would order the 1250kv one (1527/1Y) of course. I've already asked support, and they told me that they would work fine with Mamba. That is, the 1520, 1521, 1524, 1527.

I was looking at the wires, and this is all new to me. I guess I need some wires for the motor to the ESC, right? And I'm guessing these are it; http://www.offshoreelectrics.com/pro...=dh-ultra-wire or http://www.offshoreelectrics.com/pro...p?prod=ose-6bw

Settled on these connectors: http://www.offshoreelectrics.com/pro...=ose-6mmbullet

When you buy a mamba monster it comes with extra wires for the motor with CC bullets at one end. The monster uses 10 gauge wire. If you like to keep things simple just stock up on CC bullets so you don't have different size connectors for batt's.

For the batteries? I was going to use deans for those.. Or am I not getting what you are saying? :P

Yeh, I did mean for the batteries. :) I would suggest sticking with CC bullets for the motor. I thought you were getting the 6mm bullets for the batteries.

I've never really seen bullet connectors used for batteries. Isn't the Dean plug much better?

Deans are good for not crossing the wires accidently but not necessarily better. Some people might argue that a high amp setup is better with bullets. I don't know that first hand. Bullets will be easier to solder.

Ah, ok. But I don't need to order a wire for the motor? That along with bullets come with extra with the MM ESC as you said?

Just have to be 100% sure about this.. :p

Yes. My esc's came with them.

Ok. Thank you very much for all the help. I ordered a 1527/1y 1250kv, Mamba Monster Max esc and some wires just incase.

Now I just need to figure out the tranny on the GST.

Btw, this motor has these short wires;

http://www.offshoreelectrics.com/pro...motor-1527.JPG
Do I need to remove those and solder the 10 gauge ones then? Or do I just solder the 10 gauge on those?

No your best bet is to solder a bullet to those wire ends and then make an extension as needed.

I run 5.5mm bullets on all my battery connections.

Ah, ok, then get female bullets on 10 gauge connected to the ESC and connect those to the short motor wires?

Whatever is easiest for you- I would just butt-joint the 10guage wires onto those motor wires put male bullets on the other end that will plug directly into the esc. Or you could solder female bullets to the motor wires, then male bullets onto wire that goes from the esc to the motor. Whatever is easiest for you, just use decent solder and a hot iron.

Deans are rated for 65amps continuous, so they do fine in 99% of r/c applications. I use 5.5mm bullets or EC5 connectors as they are easier to grip and solder, again, whatever works best for you.

Ended up ordering 5.5mm bullets for the motor and ESC. Is that enough for the 1527 and Mamba? Rated at 150A, I figure it should be good enough, but what about bursts?

If its enough for the ESC input (battery), it's enough for output ;)

Finally found some 6.5mm bullets in Norway (They were all sold out at Offshore electrics.), so that's not a problem anymore.

Thanks again for all the help. My questions may seem a little redundant, but I just want to be absolutely sure about this. First time converting is a little overwhelming.

That's what we're here for:yes:

I'll start with low gearing of course, probably 30ish mph at first, starting out with a 12 tooth pinion on a 50-60 tooth spur or so (Does that sound right?)

I can't figure out exactly what speed I'll be getting on the top speed estimator sinced I don't know the diff ratios of my GST 7.7 yet, but is it safe to start with 12 tooth pinion and 60ish spur atleast?

Yes, use the lowest gearing possible at start. Check temps, but i think you will be able to gear up to 40mph without issue on 6S, the mamba monster can handle lot of power.

My 2cents, I'm running a 1717 in my XXL and it's a real handful. The torque twist makes it pull REALLY hard to the right when theres ever any kind of traction even with the LST tranny design. The truck is nearly undrivable on the street if you want to drive anything more than bumper car fast. I wonder if the 1520 might have ben a better choice for my application ?
When off road and theres limited traction, it makes up for itself with the crazy low end and efficentcy tho.

So I guess the 1717 would be way to much for an E-Revo?? I was thinking the 1717 or the 1520. I dont want speed just gobs of torque. Im running my Revo with (I believe)LST-2 tires(the big ones). I have a small track(area) @ my dads and just do a lot of bashing. Id like to not have to worry about overheating.

a castle 2200kv motor would be plenty. as long as you gear it for 35-40mph, there shouldn't be any overheating problems and it will have all the torque you will ever need.:yes:

Agree, 1515 is the perfect motor for the ERevo. I you want to run a higher voltage than 4s just get a lower kv motor than a 2200. Even the Castle 1518 would be nice, it's perfect on 5s. Due to the Erevo's limited strenth anything more would be asking for tons of repairs after every run. I beleive the 1717 pyhsically wouldn't even fit on the mount of the Erevo.

Thanks. I actually didnt even think about the size of that thing. It probably would hit the shocks. :oops: And 40mph is fast enough for me, as I just like to bash. Thanks.