HPI Blitz Motor Opinions
 

I'm thinking about picking up a HPI Blitz and I'm not sure which motor I want to go with for it. When I had my Slashes, I ran a castle 4600, then went to a Medusa 36-60-2000 on 4S. I don't want to do 4S on this truck, but want something that's going to run a little cooler than a 4600 geared for 33-35mph on 2S. I've thought about a Traxxas VXL motor...any other suggestions?

Neu 1409?

Not a bad suggestion. I'd like to find something under $150 though.

Have you tried the other Castle Motors?

The 5700kv and the 7700kv?

Hmmm..........Do you have another use for that Medusa Motor?

Haven't tried anything yet as I don't have the truck. Just going off of how the 4600 ran in my Slash. It wasn't super hot, but it ran in the 150-170 range most of the time. While that's well within the temp range, cooler is always better.

Also, the Medusa was sold a long time ago.

What are you going to do with the Blitz? Bash or race?

For mine I'm looking at something along the lines of Medusa 36-50-2200 on 4s ~3000-3600mah. It should be a strong setup, and could probably be geared down to limit power.

Another option I'm looking at is a regular 17.5 on 4s with MM Pro, where it could run 2s if I ever wanted to race in spec class.

And lastly would be the Velineon on 3s ~4000mah with a MM or whatever. Still undecided. That stock motor on 2s just isn't cutting it :sleep:

My 2cents
 

I have a Lightning Stadium 10 (Much like a CRT.5) it's a 6-1/2 lb truck that I run 3s in with this motor (http://www.hobbycity.com/hobbycity/s...idProduct=6529) and it runs very cool geared 55/13 at 38mph. Slightly above ambiant temps at the most even here in 95+degree heat and high humidity. The motor has ben going strong for 7 months with regular use.
Somthing to consider,definitly cheap enough ?

Bash

Those aren't bad options. I'll keep those in mind.

I would go with a 1506 or a 1509... The little hyper ste does well on 2s with a 1509 motor. So 3s and a lower kv 1509 would be a good setup.

The biggest problem would be finding 5mm bore 48P gears for it. I'm not sure the Blitz can be converted to a 32P spur.

4600 is a perfect motor for the hpi blitz.. why would you want more? 2s lipo geared right is sick. Tweak w/ the settings if your temps are up a bit and make sure your gear mesh is good. The velineon is a stronger motor and will also do better than fine in this setup. The castle 5700 is ok but no better off than you are now... the 6900 and 7700 are meant for touring cars not offroading expecially racing on a track. I've been running the Medusa 50mm 4800kv on a 2s lipo all summer long... more than enough, I have everything turned down to MIN settings.

Can you run a Roar legal motor on 4s Lipo though? I have a Trinity 17.5 motor here, but I thought it was never able to run any more than 2s lipo.

I've been looking through various manufacturer's motor specs, and they typically list something around 50,000 max RPM for the ROAR legal motors. 17.5 typically has a kv of 2200, which yields ~35,000 RPM on 4s. Perfect IMO. And besides, they use the same construction to make 3.5t motors, which are ~10,500 RPM/volt, which is over 70k RPM on 2s!

Yeah, the 17.5 in my SC10 runs great on 2s geared for 28mph. Its super strong on the track and very quick out the hole. I'm sure 4s on this motor would really wake it up, geared appropriately. I'll have a MMPro coming in, might have to try it.