Brushless hpi baja rc-monster

[Semi Pro]

Originally Posted by RC-Monster Mike

The 1527 is working rather well, actually. I did get it up to around 170 degrees after a while(running 7s and 8s packs), but I was running mostly in the grass and was being quite aggressive with it. A heat sink and a fan on the motor will be plenty of insurance, but probably isn't necessary. I am quite happy with it, actually. The shaft is too short, which is compounded by the motor adapter I had to make to install it, so i initially had trouble keeping the pinion on, but I have a custom adapter/bore reducer on there now and it held up for the last hour or so with no trouble.
I have the 1527/2.5d motor installed with a 12t pinion. the motor has a 5mm shaft and is only .75" long, which only allows about half of the pinion set screw to engage the shaft. The custom adapter adds another set screw and is working rather well so far. :)

thats great!

one of the reasons i have been holding back on getting a Baja project is the cost of the motor, but low kv 1527's are pretty easy to find used of cheep on the boat forums

do you have an price in mind for the e kit yet?

[lincpimp]

Keep in mind that this is a 2wd vehicle and just cannot load the motor like a 4wd can. So the 1527 should be good to go. I would like to see a specific carbon fiber chassis done for electric, as the stock chassis setup is not really all that good and requires alot of bracing. A lighter weight baja with 1527 on 8s power would be great. should be able to get down to around 15lbs, methinks.

I plan to make a lst based buggy (4wd) that would be close to 5th scale, maybe 6th? I will use a 6061 channel that is about 4" wide and has 1" sides. Plenty stong and narrow. Just need to get back into rc...

No mech brakes sounds good. I use a Neu 2220 and had to go with a front brake setup to get decent stopping power. The back stock brake would just cook. I'm using an HV160 with a Pistix and never tried the brake function as it is an air controller. Hopefully, the new car ESC will be out soon. I would hate to wait till next year! Please Castle have these ready in a few months!

[lincpimp]

Front brakes are a must for the baja. I would like to see esc brakes for the rear, and mech brakes for the front. Lucky for me the m11 has a 4th channel slaved to the brake function on the 2nd channel. That can be adjusted independently and coupled with esc brake adjustment the overall braking feel should be able to be tuned quite well.

As a side note I would like to see a mech front brake setup that can be used on any MT. That way a large scale 4wd conversion with a center diff could have some really good brakes. Also take some strain off the motor.

This might be a silly question but will the gear cover still be able to fit on with this setup. Either way I am in but just curious
Any new updates Mike

[RC-Monster Mike]

The motor brakes work very well on this setup - about 10x better than the stock mechanical brakes did(mech brakes stop it about 2 times, slow it down slightly about 2 times and then are non-existent). The problem with mechanical front discs is that they tend to get fouled up in the grass, etc. - the beast slows rather well with motor braking and I won't be adding any mechanical brakes on mine(reverse is a nice touch this way as well).
Mine has the FLM extended suspension arms and cvds, so it is similar weight to a stock gasser(+/-22 pounds rtr?). It isn't exactly a light-weight vehicle, but it is impressively nimble for its size. I will add a heat sink to the motor and possibly a fan for insurance.

The setup does NOT allow the stock gear cover to be used(would limit gearing adjustment anyway) - the lower plastic skid/guard and the ody work together to shield the gear mesh rather well anyways, and as long as the truck is moving, it is very unlikely that anything is gonna get caught in the spinning gears anyways - haven't had any issues yet, and I ran a lot without the body on. :)

Hey, Mike. Any news on how production is going? Also, can you give any hints (without making Castle angry) on when the new beta controller is coming out?

[Kcaz25]

Originally Posted by Electric Eel

Hey, Mike. Any news on how production is going? Also, can you give any hints (without making Castle angry) on when the new beta controller is coming out?

Yeah the controller is so intriguing!

[thomatrix]

Hi Mike,
any news? Some time ago you mentioned it would be on your site but as far I can see nothing has showed up yet.

Thanks.

[FG101C]

I think I'm going to do this too. Not in a big hurry, I'll run the gas motor until everything is ready, i.e. the esc and conversion kit. I'm thinking, since Mike is having good results with the 1527, of going with the 1527 1.5/Y on 8s. The problem is on Castle's site the motor is $302.00 shipped.

Anybody have links to some good boat forums so I can start searching for a good used one?

Also, Mike, how do you think the Castle 1717 would do, would it be enough?

1527 for $260

[RC-Monster Mike]

I will post updates as I have them as far as the conversion is concerned - been a bit swamped lately with various things, but these kits are coming along and will be ready very soon.

I think the 1717 motor MAY be enough IF it was a 2y instead of a 1Y - I couldn't say with any certainty without an actual 1717/2y motor to test, though!

The 1717 would be borderline, though - the 1527 is proving to be borderline - with a 12t pinion and no heat sinking, it can get pretty hot when I am beating on it - with 7s and 8s it works great but I can get the motor up to 160F or so near the end of the run. I will add heat sinks(2 losi heat sinks fit nicely) and see how it goes and maybe add a fan(or use the ESC fan, as I haven't even plugged it in yet - the 1527 motor is the limit and not the ESC so far).

For 8s or less, the motor really needs to be under 1000Kv IMO for best results. Sensored/hybrid would be great in this application due to the gearing - stock Baja is designed for a 20k rpm motor, so there is a bit of load on takeoff - small pinions are ideal. The ESC is working terrific as it is - but with aggressive gearing, it will cog a bit on takeoff (I use 12t pinion and it is awesome, but I have run up to an 18t pinion and it cogs on takeoff with this gearing(and the motor gets hot pretty quickly - need more motor for aggressive gearing). I think a 1527/1.5y with a 1.5" long 8mm shaft and heatsinks will be a great setup for most users. With short gearing it works extremely well, is a lot of fun, and still gets near 50mph(borderline too fast for this beast unless you have lots of space).

[crazyjr]

Hey Mike, Do you think the 2250 lehner would work in a baja conversion? I have a 10 turn version (1183KV) and if i ever get to where i could afford one of these beasts, That would be my motor if it would work. Thanks

[RC-Monster Mike]

2250/10 Lehner won't work at all, Crazy - better send it to me!
J/K - it will work great. :)

[crazyjr]

So it would work, Cool thanks. thats a reason to keep it