E-Revo to E-Slayer conversion Project
 

After making a couple of runs from my E-Revo, she is now ready to be modified.

The plan :rules:
- Make her into a mockup Slayer
- Use an Ofna GTP Porsche 911 body with stock arms maybe a Rally theme paint (body is about 13" while the wheel center to center is about 13.5"- 14" or so (buggy wheels but it will be sticking out of the body)
* or option is to get the Slayer suspension parts and Body
TBD
- RCM Revo Hybrid Truggy diffs
- Run a 2 x 2S2P 8000mAh TrueRC Lipo (4S) or fit my 5S2P A123 cells
- MMM V2 (I cancelled the order so this will have to wait)
- Powered by a direct drive to diff AXI 4120/18 (custom mount from Travis [MetalMan])
(Similar direct drive from sykeston34m)

Chassis is still being worked on by Travis so most of the parts are on hold. What do you think with the other things? :whistle:

PS: Those who can help me with getting a used Ofna GTP 911 Porsche body just so I can test it, please PM me, thanks.

Slayers suspension arms will work no prob but the Slayers wheelbase is shorter than the ERevo so the Slayer body won't fit your E Revo .
I thought of doing the same .

Easiest route will be to just buy the Slayer and get a normal Revo conversion for it, either ImpaktRC or RCM .

Will fit but tire/arm still sticking out thats why Im looking at the Ofna GTP body....but I need to see and fit it first to check if I can make custom support and make sturdy mounts for the body. If you know someone with a used one that will help. SLayer suspension would be a last resort. But thanks for the input

It seems that the Ofna body is harder to get than I thought. 2 Store already told me that they dont stock it and they need to order from Ofna. Anyway, I might be heading the Slayer Body/suspension after all.

On the other hand I got my hands on this items. Finally I was able to get to his listing before it got sold again.... :yipi:

item 1

Item 2

This guy knows what I need :lol:

Motor mount is still under development and currently Mike has no stock of the RCM revo truggy diffs. Im still waiting for his reply.

Go for a inferno GT body - Amain has them for 40 IIRC - I've just gone for a Nissan coupe...

Thanks for the suggestion but I think it is about 12" wide and I need something around 13" above. Ofna has 2 other bodies about 12.5".

I know its obvious :neutral: but just want to confirm where did you use the Nissan Coupe body?

Ok I just ordered Hybrid diffs from Mike and output drives but truggy diffs are still out of stock. Any suggestion what truggy diffs? Im looking at George's suggestion of Hyper8.5 diffs but I cant seem to find the gear ratio. HB Lightning PRO is a bit pricey but Im also looking at that. I have them on my EMAXX and they really can handle the power well.

Thanks,

Jeff

Hyper series diffs have the typical ratio of 43/13 or 3.31:1.

yeah, Im thinking of whether to go with the hyper 8.5 (3.31:1) or the Hyper ST (4.3:1). Any thoughts?

I guess it depends on how flexible you are with the spur and pinion. Truggies have larger tires (effectively "gearing up") and are heavier than buggies, so the increased ratio of the F/R and center diffs helps to compensate.

If you are using a buggy as a base with roughly the same diameter tires as a buggy (~4.25"), regular buggy ratio diffs should work fine. Then, you can gear lower with the spur/pinion if need be.

Or, maybe you can have an adaptor made that will let you use the Ofna 51T spurs on your CD. That will give you more leeway in the gearing while allowing plenty of motor clearance - you just have to raise the CD because of the extra spur diameter.

I would play with the "parameter solver" part of my site and do a few setups and see what will work...

Actually Brian I am making a direct drive to diff outrunner setup :). Im gonna be using buggy tires or slayer maybe. just concern bout the motor having enough torque. But I think it will. Maybe if I go back to truggy wheels Ill just replace the diffs

Thanks

Oops, I guess I missed that. :oops:

Yeah, a direct drive is nice, but it sure limits you on gearing choices! It's one of those get-it-right-the-first-time-or-bust types of things...

Yup Im expecting to bust things but I do hope I to get it right the first time. When I first ordered my E-Maxx parts (a year ago) I have no idea if they will all fit and I was very new to the brushless (coming from Nitro and brushed setup) but hey I was lucky enough to get everything right. Hopefully I'll have the same luck :whistle:

And this time you've got some extra personalized assistance to provide some guidance :oh:.

Yup special Travis who is helping me with this project...

Now come on and finish the mount :whip:

but seriously he is helping me a lot. Thanks MetalMan

Ok, RCM Mike just shipped my revo hybrid diffs with lightning pro diff and got some ofna buggy diffs coming too. Not sure which to use so I got both. Shock and other chassis parts are being shipped too. The Slayer has been release just need to wait for a couple of days and I should be able to order the arms.

Now, Im on a dilemma of choosing the ESC, I got MMM on order but I you know the story of that. Do you guys think a Phoenix HV-85 or 110 with pistix can power my AXI 4120/18 and current build? this ESC is locally available and easy to purchase compared to MMM so I was thinking it would be a viable alternative.

Only problem with airplane ESCs is they don't have motor brakes. You could use the built-in "prop brake" as a drag brake, but it's just not the same.

Yup, I read that too but SunnyHouTX was able to use it well just need to get use to it. However, know my nature I cant resist WOT so proper brake might be required :neutral:

The motor required a custom shaft to work properly for this conversion:
http://img.photobucket.com/albums/v1...r/IMG_7592.jpg
http://img.photobucket.com/albums/v1...r/IMG_7596.jpg

The mounting-end of the motor will face the front of the E-Revo, and the other end will be supported by a couple bearings riding in another mounting plate.

You're the man Travis :party:

Now this project is starting to take shape.....

Package just came in
 

I just receive my hybrid diffs from Mike with the truggy diffs (that was fast)

http://img353.imageshack.us/img353/7681/dsc4097rm1.jpg

Chassis and other stuff also came in (not fom Mike...sorry Mike :angel: )

http://img50.imageshack.us/img50/4452/dsc4094pe8.jpg

http://img50.imageshack.us/img50/3390/dsc4096ky1.jpg
(sorry for the poor lighting...too lacy to setup my flash :intello:

Now just waiting for those Slayer Arms, tires and body then assembly can start :yipi:

Ohhh I still have to complete my other chassis with the motor mount from Travis :whip:
:lol:

Got the drawings done, here is the pretty version:

http://img.photobucket.com/albums/v1...conversion.jpg

Top left is the motor mount, top right is the rear motor brace, middle is the upper chassis brace (ties the front shock mount to the rear shock mount), and bottom is the skidplate. Also, the cutout shown on the skidplate won't actually be a cutout, but where a 1/4" deep pocket will be milled out. The skidplate will be 1/2" thick black delrin.

More pictures!

http://img.photobucket.com/albums/v1...r/IMG_7600.jpg
http://img.photobucket.com/albums/v1...r/IMG_7602.jpg
http://img.photobucket.com/albums/v1...r/IMG_7604.jpg
http://img.photobucket.com/albums/v1...r/IMG_7608.jpg
http://img.photobucket.com/albums/v1...r/IMG_7611.jpg

Obviously it's not done yet, but it's coming along.

Travis, your inbox is full I cant send PM

Cleared :yes:.

More progress!

http://img.photobucket.com/albums/v1...r/IMG_7616.jpg
http://img.photobucket.com/albums/v1...r/IMG_7620.jpg
http://img.photobucket.com/albums/v1...r/IMG_7617.jpg
http://img.photobucket.com/albums/v1...r/IMG_7622.jpg

In the last pic you can see that I made somewhat of an error. To correct it I'll either cut out a lot of the delrin skid or the aluminum motor mount. But other than that, so far so good!

I can't believe I missed this thread.

Nice custom work for the direct drive. You should save some weight without a tranny. You'll want to make sure that the bottom skid plate you use mounts to the bottom 4mm holes in the rear bulks. These brace the rear bulheads and without it, the only thing attaching the bulk from the bottom is the 3mm shock mount scews. I found out the hard way that just using the shock mount scews tends to be a bit much under hard driving conditions.

I converted the RTR slayer a couple weeks ago and found I could not keep the truck from rolling like a tumble weed. Even with the Revo sway bars and camber adjustments, it was still out of control.
I have since mounted the front and rear ends to the E-Revo chassis and am just waiting for the E-Revo transmission to show up.
The stock body fits decent enough. Just trim the wheel wells a bit and ream two new holes for the rear.
I will hopefully have my new E-Slayer ready for the track this comming weekend. The lower center of gravity and longer wheel base should tame this rolling beast :lol:

Thanks, I just thought of it but Travis made it real....

I am not sure if I got everything you've mentioned :lol:

Anyway, I have completed the front/rear bulkheads with the hybrid buggy diffs. I had to trim a bit to make it fit well. Ohh and yes there is a screw at the bottom of the bulkhead that goes with the skid..its the only think holding eveything now.since i dont have the chassis yet (its with Travis)..not sure if this is what you meant...

For the body, I have a proline hardcore truck on its way.....I am yet to buy a sway bar....

Travis, I'll PM you later...need to check with you something....

Any chance you could get a picture of this 4mm screw's location? I suppose it doesn't help that I don't have a rear bulkhead to be able to find it myself.

And a quick note, that skidplate won't be sitting so low when all is said and done...

I did a body mod years ago when I needed a wider body...cut out the center of a clear slash body about 3 inches wide and paint it the color of the center section of your paint sceme and paint another body with a solid color in the middle and keep all your graphics to the sides. Cut it down the middle. Take the 3 inch section and mark your width. Run a bead of shoe goo on the 3 inch sections edges so the glue doesnt squeeze on to the main body. Staighten every thing out and tape it. When the glue is dry turn it over and spread the shoe goo out on both edges and bed every thing with fiberglass tape. I put in a few small screws and nylon nuts along the seam line.

Interesting Idea....I might save this for future use... For this project I have resorted to shorter arms instead of a wider body...

Thanks for sharing

If you decide to go back to full width, could you just image how good the handling would be. I've seen the nitro version and if you put any tires that are even remotely better than the stock ones, roll over city on a high bite track. I have a brand new stripped roller with trans that I was going to do a tekno set up on and I decided to dump it for this reason and cant even get any takers. I think full width with the widened body would be hardly noticable(vision wise) and quite deadly for a track/ basher. If I cant get rid of the roller, I might go the other way and get all the long arm parts and plastic chassis and widen the body.

That is my fallback if anything goes wrong it this I can always revert back to full arm length and find a decent wide body. The good thing about this design is the motor and batts are at the lowest possible position so CG wise it should be good..rolling over is the reason why bigger and wider truck bigger wheels started in the first place but I think this can be overcome....Travis made a great design putting this as low as possible...

Even the direct drive if it fails I'll just put back the tranny...i have enough spare to make a new E-Revo (too much buying off ebay) :lol:

Only if the motor fails :whistle:.

:lol: thats what I wanted to say

I agree with the e-revo design and from a traxxas standpoint, I think they would do very well by making a 2 battery single motor, vxl E-slayer with the plastic chassis.

Here is a little video of a my e-revo w/ slayer arms and tires.http://i300.photobucket.com/albums/n...h_MOV03839.jpg Are you keeping the wing?

It looks like you have sway bars installed. Not much body roll, I'd like to see it pitched into a turn at about 30mph. It looks like the way to go. I guess I have to shell out more cash for the e-revo tranny and the plastic chassis and try to sell the aluminum chassis and nitro tranny. I think I'll throw in sway bars and 2 stage pistons for the shocks.

Thanks for the vid....

I myself is still thinking whether to put that sway or not...I will know once I get this completed....

No sways were installed.