Not on hobbycity but I did on my thread...

http://www.rc-monster.com/forum/showthread.php?t=10618

I always knew that it was a bit small and 16.5v (5s A123) would be a bit low kv but was starting there before taxing my mm on 6S a123.

I can take some pics of what is left but the internal wiring is REALLY thin. I think in the end it cooked itself and the insulation on the woring broke down and it shorted.

Sods law I was just bringing it back for a temp check when it gave out. But after a 2 mins back and forth in basement it was too hot for finger 120+.

Thanks for the info. It's good to have some warning. I will probably give that motor a shot in my esavvy on 4s. It'll be slow, but should be something good to let other people drive rather than my 40mph e-revo. I also have a trail rig that runs 2s LiPo. With the right gearing maybe it'll make a nice trail runner / light crawler.

I can use the 8xl from my revo in the hellfire temporarily. It should be good on 4s with the BK or MM. I'd really like to go with an outrunner on 5s using the 125b, but unless I can find something in the $50-60 range for a motor, It'll probably have to wait a few weeks. Gotta buy LiPo's.


J.

then watch ebay for the 1700kv version of the align 600XL. i've heard good things about it. i was going to use it in my lsp but i scored a hacker on ebay cheap.

Yep.
 

Hey BrianG you are absolutely right. I was kind of wandering the same thing. Making a hybrid that combines the two types seems a little weird. Why would you want to in the first place? But hey for something that cheap just testing it can be interesting. With so many GOOD choices out there that are already proven to give us the power and torque that we need why bother with a cheap experimental motor. Still if you do any testing we would love to hear the results for future information when others may ask. That is what we are all about anyway, is gathering information and sharing it to help others who may not know.:lol:

Well, the first hybrid motor that I found was the align 600l, not sure if any like that were made before that motor. For heli usage the hybrid appears to be a good idea. It has more torque than an inrunner, and allows for less gear reduction, which is an issue on helis. Plus it has a higher kv than a std outrunner, needs less cells. The larger torque allows the head speed to fluctuate less for better response.

I am not so sure about this motor's usage in the car enviorment. I tested the l and xl in my emaxx and prefer an inrunner for it. I do still have the l model, and have a hyper8 buggy to try it in, on 6s lipo. So we will see how it does.

welp, I ordered 4s2p 8000mAh from TrueRC this morning. I can run it on the Revo until I get the E-Hellfire finished up. Hope to order the LSP mount from Mike this evening and figure a way to mount it in. I havn't gotten the measurements off the stock center bulks yet, but I will tonight and compare them with the measurements provided on the previous page.


J.

Looks like the LSP mount will work fine. The only thing that doesn't match up are the upper holes for the top connecting brace or whatever you'd call that. I will either need to purchase the stock center diff bulk set for LSP, or make a custom top brace that will mount to the stock hellfire one in the front, and the LSP motor mount in the back. Easy cheesy. Going to place an order for the RC-Monster LSP mount 2day :).


Brian,

What did you have in mind to secure/brace the rear end to the chassis ? I like how you've modded the rear CF piece, but I can't quite picture a sturdy way to connect that short CF piece to the chassis to provide enough strength to the stock style rear brace. Were you just going to drill the chassis for additional standoff's ?

I was thinking of a way to use some aluminum rod threaded on both ends, and bend one end at an angle to go through a hole in the shock tower, and then use a ballstud connector on the chassis for a beefy ball end connector on that side of the rod. One of those on either side of the rear driveshaft should be pretty stout. Maybe I could use some traxxas aluminum pushrod's for Revo or something. I'll have to mock up a picture if that description doesn't make sense.


J.

Edit...

Oh yeah, I was also wondering what you had pictured as an extra brace that would go through the notch you made on the front CF tray.

Have the battery on the way, and I ordered the lightning stadium mount today. I picked up the rest of what I need from tower. I should hopefully have this thing running by the weekend if everything shows up!

J.

update....
 

So, this truck just sat around in the basement until about a week ago. I got bored with busting up the tranny gears in my e-revo, and used the electronics from it to get the hellfire together. Here's what I came up with.

She's still a little rough around the edges, but running good. Although, I can only run it hard for about 15 minutes before I feel it's necessary to have a cool down period. I'm pretty well tired of feigao's. I need a better motor :). Right now I'm just biding time until the MMM starts shipping in a reliable form.


Any opinions, or general hellfire suggestions ?


J.

Wow, I guess I never saw your question. Anyway, I hadn't really thought about the back support at the time. I was going to wait for the motor and battery to see how much room I had, and then go from there. For the front, I figured a threaded rod (like maybe the pushrod from a Revo) would work, or maybe just a piece of flat CF or Al...

Nice Rig
 

Well your work seems to have paid off. That looks like a nice setup, so how does it run? Have there been other Hellfire conversions? The Hellfire was one of the first R?C vehicles that I looked at buying, but I did not want to go in the nitro direction so I went with the Maxx line. I would imagine that with the rep of the Hellfire that it handles fairly well. Good luck with that, and go for a good motor like that Neu 15151Y.

Handles great, although I need a stronger servo, or at the least a metal servo horn. The 9xl is pushing it around at good speeds. I need to get some proper wheels, as the ones I have I had been using on e-savage to widen the track. They are offset all the way out. It makes the hellfire look a bit goofy being so wide. I'm thinking on just getting the stock black dish rims and switching the tires over.

All in all, I really like it quite a lot. I have thought of a flat piece of aluminum cut on an angle to go from the rear shock tower to the chassis. Then I could use a delrin block bolted to the bottom and rear, using that to bolt to the chassis and shock tower. It's fairly firm as it is, but additional chassis bracing seems needed.

I'll definitely be looking into a MMM and Neu combo as soon as I can afford the shopping...


J.

Wow. I thought I'd perk up more interest with this one, being as there aren't many converted hellfires around here. Here's some more info....

The 9xl took a dump, so I ordered a 13t RCM pinion to run with my finned 8xl. I also switched out the BK 9920 for my quark 125b. Running with a 4s 8000mAh TrueRC. This should pack quite a punch, as long as the 8xl holds up. 13/52 @ 14.8v on the 8xl should give some nice speed.

If you noticed the wooden blocks under the revo battery tray I'm using.. that's temporary. I will replace the wood with some delrin or plastic blocks. The revo tray works pretty good for this application, so it will stay there I think.

I also want to replace the rims with the stock style black dishes. Although, the wide track is proving to be pretty fun. I can't make it traction roll for anything, even at 40mph +. It flies awesome. Very stable in the air, and easy to control. It's a lot more precise than driving the revo or savage, for sure.

I guess that's about it for now. I'm pretty much in love with it. :D.

J.

Well, this is irritating. I switched out my bk 9920 for a quark 125 due to cogging from the bk. I also had to put my 8xl in since the 9xl took a dump. I'm currently geared 13/52 and I can run for about 5 minutes before the quark thermals. the motor is getting hot as well, but not much more than expected with a feigao. The ESC however, is roasting. I'm not sure the actual temp, but hot enough to shut it down.

I can't find anything binding in the drivetrain, and I can't really gear much lower than 13/52. I think moving to a smaller spur would be a bad idea.

I also have a problem with the spur skipping when I brake. It's fine in accelleration, but when braking, it will make a nice sound like the teeth on the spur are slipping against the pinion. I find the only plastic spur that works is kyosho ? I think there's nothing bigger than 46t in that, right ?

I really like the truck, but it seems I have a few bugs to work out.


J.

Frustration
 

We can feel your frustrations, but overall your experience will leave you with an increased knowledge that can help in future projects. At least you are learning what not to do. Fuegoes do seem to have there troubles due to high temps. Personally I don't think that they are worth the hassle. Spend the money and get a motor that you know will pay off, like the 1515/1Y Neu. We rarely see issues with them and the power delivery is awsome. It sounds like you are on the right track though. Are you having fun? That is the most important thing of all.