Jammin X-1 CRT motor selection

[BP-Revo]

Personally, I would just get a proper Lehner motor with the Mamba Max ESC and run it on 4S in Delta configuration.

In the future, you can get the Monster Max and then re-wire the motor to wye configuration, which will reduce its KV by 1.73, allowing you to run the 6S no problem.

This will allow you to buy just one motor, saving you money. I know you seem set on using the Monster Max system as a whole when it comes out, but I can pretty much guarantee you that a Lehner motor will be better.

Also, its probably better to get two 2S2P packs and wire them in series rather than a 2 4S1P packs and wiring then in parallel.

[Serum]

Someone is in a delty-wye mood.. :p

I would love to just buy one motor, I just thought that the KV would have to be alot different for 4s vs 6s. That is definately something to consider. I am not familiar with the delta configuration, I will do some research on it.

Also, what are the benefits of running in series vs. parallel? I do not have my packs yet, so I could do this, but running 2x 4s 4000 packs allows me to use them in an airplane as well as the truggy.

[glassdoctor]

Nothing wrong with using the packs liek that. If you can get more use out of them with split packs go for it. I made up packs like that before (a pair of 2s packs) so I could run them in a 1/10 buggy at 2s or in my 1/8 at 4s.

The Feigaos are so cheap relative to the whole brushless project, I would not see the problem in planning to do two motors. Especially if a guy even thought for a second about getting a Lehner.... that $$ would buy like 4 XL motors...

If you want one motor... get 9XL. It's a good fit for your 50mph on 6s... and you can make do on 4s while waiting on the MMM. Gear it 18/46 and it will be very fast.

Seriously, I think you will find out that 50mph is overkill.. not that it's not cool... but low 40's is very fast and still jaw-dropping for most people.

Get some video if you have it running 50+..... I never gear mine that high so it would be neat to see it.

I dont mind spending the money on a Lehner if it is worth it. I hate buying cheap and then eventually ending up replacing it a few times. I'd rather get something good and it lasts, however if I do, I want it to work on 4s and 6s. If the 8xl or 9xl will work good on 4s, it's a no-brainer.

Glassdoctor, what is your opinion on running the lehner on 4s in delta configuration like mentioned above?

[BrianG]

If you want something that will work at both 4s and 6s, I'd get one of the LMT motors. As BP-Revo pointed out, the coils can be reconfigured from D to Y by some solder pads on the back of the motor. This will let you run 4s when in D mode, and 6s on the Y mode and still run at the same total RPM.

However, at the cost of an LMT motor, you could get three XL motors with different kv ratings for whatever voltage range you want. The XL motors are good too, just not as efficient so they heat up a bit more. As long as you keep the bearings clean and make sure the end cap doesn't pop off (use the RCM heatsink/clamp), there's no reason why an XL shouldn't last a looong time.

Is this the 8XL that I need?
http://www.rc-monster.com/proddetail...540C_XL&cat=20

Or this one? (8XL out of stock)
http://www.rc-monster.com/proddetail...WAND_XL&cat=20

[BrianG]

Yup, both of those are the about the same performance wise.

If it were me, I'd get the BK XL (despite the fact they're out of stock) with the seperate RCM heatsink. I know the Feigao one has a built-in heatsink, but there have been instances of the end bell popping off. The RCM heatsink with the regular 8XL is quite solid.

[Patrick]

This motor would work to, looks like there in stock.
http://www.rc-monster.com/proddetail...o5408xl&cat=20

Get the RCM heatsink like BrianG said to keep it cooler and stop it from falling apart. You could use it on the other motor you get for 6s as well. I assume MMM motors will be the same diametre. If you get a Lenher 1940 later, the L size heatsink should fit (it will fit an XL motor to), but the XL size heatsink may be too long for the 1940..I'm not sure, something worth looking into before you decide what to get though.

[BP-Revo]

Well, some of my excuse to myself for blowing 350+ on a 1950 is the reduced blood pressure of not having to deal with pressed endbells. LOL

After seeing MetalMan's come apart a couple times, I didn't want to deal with that PITA. I'd probably pull my hair out the third time it happened.

Serum - Call me Delta-Wye boy from now on LOL.

There is a solid point that a few XL's can be had for the price of one Lehner. Doing dual BL would also be a nice eye-catcher - and you can choose how fast you wanna go by using 1 or both systems (you'd just need a spare pinion to put on, since you will probably run higher gearing with 2 motors). Also be a good idea to move the other motor off the mesh so it wont spin when you are just using one.

[MetalMan]

Originally Posted by BP-Revo

After seeing MetalMan's come apart a couple times, I didn't want to deal with that PITA. I'd probably pull my hair out the third time it happened.

It only happened twice, one time for each of my two motors. JB Weld does a very good job of fixing this, and so far my JB-Welded motors are holding up fine.

[Serum]

That's the reason why Mike made the heatsink for these motors.

So is there any benefit of the above linked motors? Should I just get the one that is in stock? I will definately pick up a heatsink while I'm at it.