Hellfire conversion

So, wanting a truggy, but being on a budget, I picked up BrainG's hellfire roller. Some of you probably remember the thread he started on it here.

I'm trying to work out a motor mount for it, and would like to use a mount in the style of RCM's where the mount replaces the rear center diff bulk. I am hoping to be able to use an existing mount, and modify the chassis as necessary to accept it.

If anyone has this type of mount, such as the Lightning Stadium, XRay, ETC, If you would be kind enough to provide me with the measurements between the mounting points, and the diameter of the hole for the diff, as well as the overall height, I would be most appreciative!



If this does not work, I plan on a piece of angle aluminum bolted to the chassis. I also have an emaxx motor plate I might utilize such as BitHed did on h is Brimstone.


Any advice is appreciated!

J.

[Arct1k]

MIght be worth a part no check but the hellfire does look very much like a lightning and I think HPI/HB are one company.

You are correct on HB/HPI. I also think the center diff bulks on the two look alike. I'm not sure if the part numbers would match up though, but it will be worth a look i'm sure.

J.

*edit*

Definitely not the same part, but the dimensions are similar. I think if I were to order the LS mount from Mike I could probably make it work. Might need the stock diff mounts for the LS as well though. It would be nice to have the measurements, it's quite difficult to determine from the pics on Tower, lol.

J. (again)

Hope BrianG doesn't mind me borrowing a pic from him for the time being, until I get my own up....


Here she is:

[BrianG]

I see the package arrived safe and sound?

For a different conversion in the past, I just sent Mike the CD with mount and he was able to come up with a mount. Might want to email him.

BTW: the notch in the front CF piece was made to allow room for a new shock tower brace...

I have the lsp mount.The hole for the diff is 15 mm and the side the bearing goes into is 16mm. The holes in the diff mount that connects to the chassis on the front and the rear are 25mm apart and the the distance between the front and rear mount is 35mm.The height of the motor mount is 50mm. The hole on the top is 23mm in the rear mount and 24 on the front. The top mount is 34mm apart.

Sweet, thanks Blunten! I will take the measurements when I get home and see how it compares. If the center diff and bearing will fit, I'm sure I can either mod the chassis for mounting holes, or create some sort of mounting plate.

J.

Here is the motor I have ordered for this conversion,

http://www.hobbycity.com/hobbycity/s...idProduct=5422

At ~1600KV, do you think I can run this on 4s ? I have considered moving to 5s. I have a BK Warrior 9920 and Quark 125b, one or the other will be used in this. Probably the Quark.

J.

[BrianG]

Did you read the reviews at the bottom of that page?

Originally Posted by HobbyCity User Review

A41-60 in a truggy
Chris Long
Screwed endbell and supplying male & female connectors was nice.

Motor wires are small - The motor is NOT suitable for a truggy/buggy conversion. It overheated and smoked after about 4 minutes.

[JERRY2KONE]

UH OH, he let out the smoke, not good. Does not sound good at all, but he did not post any specs as to how he was running it either. He may have been trying to overwork the system in his setup. The design and idea look interesting though. If you get it please let us know what happens with it.

[lincpimp]

Chris Long is our buddy Arkt1c.

The motor is too small for a truggy, and too low kv for 4s. It appears to be an align 600l knock off (at least design wise). It should be good for a buggy on 5-6s lipo. I have an align 600l that I plan to run in my recently acquired hyper 8 on 6s lipo. Should be a beast.

If you want a good inexpensive motor for the truggy, try out one of the kb 45 motors, the 8l at 2300 kv would be a beast on 4s. I have a 10l, 1800kv, in my ultra gtp and it makes tons of power on 4s and does not get hot. My MM also stays very cool too, like it is not switched on! The only issue is that the kb motors have a 6mm shaft and a 30mm bolt pattern, but I made my own motor mount so it is not a big deal to me.

Hrm. I had heard some decent things about these "hybrid" motors. I thought I would give one a shot and see what happens. I have other vehicles I can use it in. I'm sure it'll pull my little E-Savage around ok. I have an 8XL that I can use for the time being.

I don't really want to mess with drilling out a pinion to 6mm, other than that the KB motors look very nice. I'm definitely on a budget, so inexpensive is good. Eventually I'd like to have a really nice HV motor in the hellfire, but I just can't swing it right now. I puffed a maxamps last week, so now I have to go lipo shopping as well. I thought I'd pick up a 4s or 5s TrueRC 8k when I get paid this friday.

J.

[Arct1k]

I must say I would stay well clear - Just running on 4s in the basement - cruising around at low speed it got v hot v quick.

I've found a 30 to 25mm thingy to fix the mounting pattery but the 6mm shaft is a pain that I don't want to have to deal with - shame...

I've now seena a 1515 with flip diff - look v tight but hope I can use the cc 1512 copy motor...

Guess I'll stick with a feigao for this guy until I can swing something better.

[BrianG]

Originally Posted by JERRY2KONE

UH OH, he let out the smoke, not good. Does not sound good at all, but he did not post any specs as to how he was running it either. He may have been trying to overwork the system in his setup. The design and idea look interesting though. If you get it please let us know what happens with it.

True, he didn't post his specs or what he was trying to do, but I thought I'd at least warn about the possibilty of failure. Also, he said it blew within 4 minutes of running. I would think he'd have to be REALLY overworking it to blow that quickly. The specs list power as 1200w+ and the kv, but not the max rpm. 1200w should be enough to power a buggy, but the specs could be inflated. And being an outrunner hybrid, I wonder if the max rpm is lower like most other outrunners? This would really limit the usable voltage as well.

TBH, I don't see the reason for a out/inrunner hybrid. Doesn't an outrunner have more torque because of the lower kv and amp rating, rather than the high rpms that an inrunner is capable of? An inrunner can be cooled easier because the coils are physically attached to the can, which makes adding a heatsink pretty easy. To me, it seems like a hybrid actually combines the disadvantages of each motor type instead of combining the advantages.

All in all, it would probably make a good motor for a stadium truck or other 2wd vehicle that is 1/10 scale or smaller.