Losi 8ight battery tray
 

Mike, I had seen mention of this in one of the 8ight-T threads and would love to get a more "specific" tray for my Losi. My battery will practically get lost in the stock tray. Any progress made on getting these to market? I'd definitely be interested in one.

Add velco in the tray and on your battery ;) It won't slide anymore, most people are doing this with and 8ight.

^ Yeah, Battery trays for the most part are vehicle specific, not battery specific.

I have used the losi tray in several rigs, not one of them was an 8ight. With the right amount of padding and some velcro, every battery is a perfect fit.

Production unit for losi is going into production sometime this week

Mike was also going to move the tray for the ESC a bit to help center it and presuably predrill holes for the ESCs, etc like on his other tray. That alone is worth it to me. Plus if he has a production size to follow I'm sure making it for my battery wouldn't take much. I just want a tighter tray with more centralization honestly. The stock one just isn't quite right for me. Plus I haven't gotten an RC-Monster box lately...

I know... Im the Beta tester.. My unit will be here when i get home today :lol:

Can you post some beta photos?

:rofl:

The Losi trays are done and showing as an option in the battery tray product listing - they are '1 size fits both' for the buggy and truggy, so the ESC can't move any closer to the center-line than it already is(would interfere with buggy rear chassis brace). I did get the battery lower and closer to the center than the Losi tray, and also have brass inserts in the screw locations to prevent stripping and allow many installations without wearing out the screw holes(neither situation was a reported problem, but I am always tweaking my parts as I go along). :)

Mike, i noticed that. Pics will be up in a few minutes. The tray does fit the buggy and the truggy :)

http://i152.photobucket.com/albums/s...0503101539.jpg
http://i152.photobucket.com/albums/s...0503101603.jpg
http://i152.photobucket.com/albums/s...0503101657.jpg
http://i152.photobucket.com/albums/s...0503101825.jpg
http://i152.photobucket.com/albums/s...0503101909.jpg

Lookin' good, Ben. Remember, the traxxas ERevo ESC hold-down will thread directly to the tray for easy installation of the MMM ESC. There is also 4 holes for direct mounting the RX8 ESC from the bottom. :)

Wow, ask and ye shall recieve! *starts wishing for some Revo hybrid diffs*. BB16, I'm probabaly going to pull the trigger on one of these soon either way, but can you post the inside dimensions of the tray? I'm curious what the battery area size is.

Mike, what about the new style mount for the Losi's?

Working on that one, too - I will updat some of the 1/8 mounts to the new style, but a slightly modified version to allow M4 or m3 screws to be used. :)

The inside dimesnions are 168mm x 55mm for the battery compartment.

4mm compatability FTW. Thanks for the dimensions, Mike. I just found out my batteries are BOed until June *grumble.* Cant wait to try these parts out.

Battery tray is HUGE!. Mike as a possible addon. Make some sort of L bracket that fits in the battery tray with adjustable placement to accomodate smaller packs better. my 4s 4100mah pack is Swimming in the tray. :lol:

Mike how do you have the wiring exiting your packs.. mine hits the side of the trays. Might shave it down a bit.

Other points worth noting.

- Need to shave down a small bit of the servo tray, the raised motor mount changes the front driveshaft angle and it runs into the tray.. a bench grinder fixed it in about 30 seconds.

-Wire channel under the Battery tray would be nice. i ran my wires under the lip of the tray and across where the battery strap sits.. a little channel would be great and simple to impliment.

-Brass Inserts are great! Self locking, you can really crank down on them without worrying about stripping them out.

Ill report back later today after i give her a good shakedown run

Unless the battery is stuffed into the tray(big battery), the wires should not pose a problem with most packs. I am not sure how your little 4100mah 4s pack that is "swimming" in the tray has a wire interference? as far as an insert for placing smaller packs - I use a thin padded foam in the bottom of my trays - provides great traction and the packs don't move during use(could place a smaller pack near the rear of the tray and it will still be there at the end of the run).

I did consider the wire trail on the under side of the tray - the problem is that it would route the wires into harms way due to the big cutout in the chassis for the flywheel. It would be easy enough to make the trail available, but I wouldn't use it myself, as the rx wire leads would end up getting damaged eventually from track debris. There should be enough room to route the wire under the tray out along the mudguard and back to the radio box with the vecro strap - this way is safer imo. :)

I have my packs setup with the cells laying on their sides, so the wires hit the side of box. I could turn them on edge and have the wires sticking straight up. but then the cells are on edge...

Mike, are those dimensions correct? That would make your tray larger than the stock losi one. Is that correct? Just checking.

The inside dimensions are correct - I typically make the inside dimensions as large as possible within the size envelope - you can put 5 gallons in a 10 gallon container, but 10 gallons wil never fit a 5 gallon container! I use foam padding when using packs smaller than the tray size, which has dual benefits - the foam offers great traction, so the packs stay where I put them, but I also can fine tune the weight balance with battery placement. :)

Hrm, I was hoping for something that would let me move my battery fore or aft with less open space than stock... guess I'll have to go custom. I understand the reasoning, but my batteries will float in there in all directions. At least we already know where the holes need to be :) I'll have to send you dimensions when the batteries get here, Mike. Stupid backorder until June...

I used a block of Delrin plastic, cut it to be used as a spacer for my largest pack. thinking about putting velcro on he tray instead of the block

I knew I should've checked the store before I bought my 8t 2.0. I hate to be one of those impatient people constantly badgering you for a release date, so hurry so I don't have to!!! :-) Out of curiousity though, how big of a spur gear can the mount fit? Stock Losi 8t 2.0 is 50t, will I need to go to a smaller spur?

Well, in the e-8 conversions, the differential gets spun around 180 degrees. Anything larger that a 45T spur will need some grinding on the chassis or a slot cut for the gear to clear. This is the case unless Mike's new mount will provide a spacer/riser for the differential.

Not entirely true.


mikes CURRENT mount has the spacer for a 48t....:yes:

I knew the rcm mount had a spacer and could probably run a bigger spur than the 45-46t everyone else is running. Thanks brushlessboy16, I'm sure the new mount will be the same, now I know what I'm going to have to do when the new mounts are availible. I'm not too keen on cutting up the stock chassis for the 50t. But since the mount isn't availible yet I do have time to make a carbon fiber chassis...

BB16 is correct. The current mount has about a 4mm spacer for the other side of the center diff to space it up. I am running a 45T spur and there's plenty of air under it. Wish I could get one a little lower since it puts the center shafts and a pretty strong angle. If I could make one request it would be make an 8ight mount that fit up to a 46T and then a T mount that could fit the bigger stuff. Like BB said, the front center shaft is dangerously close to the radio box.

I like the delrin spacer idea, but I only plan to use 1 battery type with my losi, so I'd just as soon pay the extra 5 bucks for a custom size that moves it towards the center and lets me move the battery fore and aft. I just wish they'd get here so I could confirm the case size. I may measure a 2S version of my pack to get it dimensioned. TPs website lists the 2s, 3s and 4s as identical W and L but with different heights. I know where there is a 2s available. I'd just like to get the mechanicals and electricals squared away now so I'm good to go when the batteries get here. I'm still waiting anxiously for the new 4mm mounts. I'll be getting one of those too... and hybrid revo diffs if they ever come available again. Can't blame Mike too much, though. He's just one man. If he could turn stuff out the moment we wanted it, he'd need 36 hour days.

I had to shave mine with the T. But the angle isnt that bad compared to stock...

I know, but I want to SLAM IT! Lol. It still beats the stock mount. I'm just putting out my dreams. I just want to get my buggy in the dirt! This waiting for stuff has been driving me nuts. Batteries are mostly at fault.

I ordered my battery tray today. Looking forward to permanently mounting the electronics and getting the buggy a little closer to running.

Right on :great:

What about making the motor mount the same height as the stock mount, but including 2 spacers to be used optionally when needed(or offering them separately)? This would allow those using a smaller spur gear to 'ride low', but won't alienate the guy using the stock spur. I haven't started cutting the new style mounts yet, so now would be a good time to clear the air of any suggestions or 'wish lists' regarding the new mount. I was also thinking to add the chassis brace like the one for the Ten T, which would cover the spur gear slot on the stock chassis.

I love both of those idea, Mike. I'd definitely spend my cash on a mount like that.

Got my battery tray yesterday. I love it. I think my fiancee thought I was crazy because after a 12 hour work day I came home, opened a box and sat down at my work bench. Battery strap seems like it would definitely be too short and I would have liked a second channel for a second strap, but I used one of my Losi straps, have 2 left as spares and so the short strap problem went away. Love the brass inserts. mine were TIGHT on the screws, but everything went together well. Looks good on the chassis. Can't wait to bolt down my ESC. Then I just need to do some soldering and await battery day, she's a done deal. I also love that this tray is a little stiffer than the Losi one and supports the underside of the ESC tray. Kudos, Mike.

You only need 1 stap. 3 straps is overkill. you would be suprized as to how much of a load that single strap can support without pulling apart

Oh I wasn't worried about the strap coming apart. I was more concerned about securing the battery in the rear position.

The brass inserts will expand into the plastic the first time you thread into them - they won't be so tight on subsequent installations. A single strap is plenty strong to hold the battery and makes swaps easier as well(this is a big plus if you race with nitro guys in longer mains).
I usually send a 10" strap - should I make 11" the standard size?

The Hyperion G3 6S measures 10.16 itself, so I'd go 12". Trimming them is easier IMHO, than ordering and finding out that they are too damn short.

BTW, I've also found that the above battery (in addition to my Neu 5S, and my "old" Zippy 6S) falls into the "custom" battery tray department.....:bad:

I need to fab a quicky custom tray today for the Muggy (I'm taking it on its first runs this weekend). Mike - what is the step up dimension you use where the tray goes up over the mud guards?