Revo Hybrid diff cases

[RC-Monster Mike]

Here is a prototype of the Revo hybrid diff cases. The final details are being worked out, but the plan is to allow use of the stock driveshafts(or aftermarket cvds that fit the stock diffs). Enjoy. :)

[RC-Monster Mike]

Also(Dafni), these should accept buggy OR truggy diffs. :)

[squeeforever]

THANK GOD!!! Mike, whats the price gonna be on these? About 75ish?

[BrianG]

Yay! It's on my wish list already!

[HotnCold]

I guess i should bring a couple 1/8 scale diffs over tonite mike - :dft012: :dft012:

[RC-Monster Mike]

I would guess around $100 per diff setup. The diffs already cost $65ish, not counting the custom modded pinion shaft and output drive shafts(to accept stock diffs). We are still working out some details on the procedure.

[coolhandcountry]

Sweet. I was wondering if could get a set of the modded diffs for a maxx with the ue cases. I could just do a revo instead.

[Mike.L]

Pritty cool. considering you can use two-three different types if diffs

[Serum]

Okay, that was the only thing that kept me from buying a revo.. :p

[pcnutz]

Mike why are you making a modded pinion for it, why not use 1/8th scale stock pinion and dog bone cup

[Serum]

because it will allow you to use stock shafts.

[HotnCold]

because it will allow you to use stock shafts.

I took you 2 whole minutes to respond to that question - what took you so long Rene? - :005:

[Serum]

I was eating and watching a movie... :p

[Serum]

doing the laundry..

[Serum]

Preparing my bike for a ride..

[coolhandcountry]

That could explain the slow delay. :D

[HotnCold]

:005: :005:

[Dafni]

Nice, Mike! Especially the "truggy" part!

Any testing required? :)

When they go into production, tell Jamie to run a HUGE batch! They will go out faster than free beer, I have no doubt.

[pcnutz]

I think after the diffs are replaced the last weak link is the stock center shafts, why would any1 want them, just a thought, trying to save you money and effort

[Dafni]

pcnutz, most of us BL Revo guys use dogbones in the center anyway. Well, at least all the G2R users do.

[Sylvester]

AWESOME! Sign me up for a pair once i get back from poland!

[Serum]

Did i just heard free beer?!

[crazyjr]

Will these work with the G2R shafts?

[coolhandcountry]

If you buy the modded diffs mike is going to carry. Yes it will work with the stock sliders.

[crazyjr]

I meant with the G2R shafts

[Dafni]

The input shaft on the HB diff-pinion will come modified. It will be 6mm instead of 8mm, to let you use stock revo bearings. So yes, it will work with your G2R drivecups and dogbones.

Correct me if I'm wrong, Mike. This is how I understood it. It would not be possible to bring 8th scale bearings into the Revo stock bulkheads without modifing them (the bulkheads).

[Serum]

Sounds fair to me, i remember the bulks had a tight fit at that point, so my guess is that it doesn't take 16mm bearings.

[RC-Monster Mike]

Correct Dafni and Rene. The diffs have a modified pinion to accept the stock Revo bearings - 16mm bearings simply won't fit. They will allow the use of any aftermarket driveshaft option that will attach itself to the stock diffs, including the G2R shafts. :)

[tallyram]

this sounds awesome. i can't wait for them!

[crazyjr]

Thank you Dafni, and Mike

[2f43t4yall]

so whens bulkless coming around?

[squeeforever]

It might be a while.

[HummerMan]

All I am going to say is wow! They look great!

[rchippie]

Mike they looooooooooook AWSOME. What size bearings do they use ?.

[RC-Monster Mike]

These should be available fairly soon - no hard date, but we are working on finalizing the design. They use the stock Revo bearings - the whole idea is a direct replacement that allows use of any Revo drive shafts or upgrades while providing the durability of the 1/8 diffs.

[rchippie]

Mike thats great. I posted a link to your diffs on my LT site. Also my buddy owns a LHS he may be interested in carring your diffs if your interested.

[coolhandcountry]

Does this mean you closer to a release mike?

[RC-Monster Mike]

Hippie - there will be wholesale opportunites for hobby dealers as I anticipate this to be a popular item.
The biggest holdup for these will likely be getting the internal diff parts in quantity(for now - we may design and build our own diffs in the near future). The actual parts we make and modify shouldn't be much trouble to keep up with.

[CrazyPhantom]

I will definately be intrested for my Trevo project, as well as carrying them for resale.

[its me]

wow guys!!!! the reason that i joined this forum is because of this thread.

And if your wondering if this will be a popular item, it will be. The way I
found this site is a link from another site into this thread. Awsome guys!!!!!

[HotnCold]

Welcome its me - Im sure you will find a ton of usefull info here. Enjoy...

[Serum]

And enjoy the great atmosphere..

Welcome!

[its me]

thanks guys for the welcome!!!!! and yea this site has alot of great info every were!!!!

[HummerMan]

Your welcome Its Me for throwing ya a link LOL. I have a question. Will this be a bulk/diff combo or do you some how manage to stuff 1/8 diffs in the stock bulks? Thanks!

[Sylvester]

It is a direct fit for the stock bulks.

[HummerMan]

Oh thats great! Wasn't sure if I should buy bulks or not.... Now I know! Thanks.

[1brent1]

Mike.. how can I get on the waiting list? I'll even pre-pay if I have to!

Thanks,
Brent

[neweuser]

Send Mike a PM 1brent1

[its me]

Your welcome Its Me for throwing ya a link LOL. I have a question. Will this be a bulk/diff combo or do you some how manage to stuff 1/8 diffs in the stock bulks? Thanks!
lol thanks hummer!!!!!

[HotnCold]

Hey everyone - just to give you a heads up - Mike will be out of the shop till mid week - so emails and pm's might take a bit for a response.

[its me]

any new updates on them?

[BlackedOutREVO]

^^^ up any updates

[Serum]

They are allmost done, a little more patience is required.

Mike is busy at this time doing catch-up on the emails he has received during his absence.

[BlackedOutREVO]

ok cool

[CrazyPhantom]

I was wondering, Mike did you machine the diff cases your self?

[Rcbros]

Mike,
Are with FLM on this project or did you take it on yourself?

[squeeforever]

I think its a joint project type thing...

[Procharged5.0]

Is the Ofna 7.5 8-gear still the diff of choice????

[squeeforever]

I would choose the Hot Bodies Lightning diffs. Tuff as nails and you can also get aluminum cups for them, but its not needed at all...Not to mention, if you need the super low ratio, you can get the Pro version's (from the Lightning Stadium truggies) that have a 4.3:1 ratio instead of the standard 3.31:1 most buggies have.

[Procharged5.0]

Thanks Squee!

I'm looking forward to the new revo diff cases!

[maXXler]

I'm looking forward to the new revo diff cases!

:027: me2:043: :004:

[Serum]

Hi Maxxler!

everything okay?
Cool avatar..

[maXXler]

Hey Serum,

yeah i think so ;), thx...

tomorrow my trakpower lipos will go on shipping to me :043:

[CrazyPhantom]

When these going to be ready to sell! I am ready to buy a set.

Let me know,
Joe

[Serum]

They are available now. (check the flightpower site)

[CrazyPhantom]

I'm talking about the diffs not his lipolys

[CrazyPhantom]

Updates? I really need these.

[meatzardd]

any updates?

[Serum]

Waiting is for the dog-bones from what i have heard.

[BJE]

Is there any more news with these? How are they coming along? The diffs are the one thing that have made me not want to do an E-Revo. When these come out, I may do one.

[Sylvester]

I emailed mike about a week ago, he said less than 2 weeks and they will finally be out!:) He said he has went through 4 different designs and finally got the right one!

[BJE]

Thats awesome! Did he give you an idea on price? Will it include everything or will it be just be the diff cases?

[BrianG]

Yay!

[BP-Revo]

Sweet!!!

I may have to make 1 giant order through Mike with my LMT 1950/6 Hi-Amp, these diffs, and some other misc things.

Anyone know if I cna use a Torsen diff in one of these? I'd love to use a Torsen diff up front in my G2R.

[Sylvester]

Mike will most likely carry the cases with diffs inside.

BP - if it is the same size as a HB diff or any 1/8 scale diff , it will work.

[BJE]

The Gorillamaxx G3R revo chassis (hurry up Gorillamaxx:)), slipperential, and these new diffs would make a SWEET setup!

[jhautz]

Ya-Hoooo! These can't come soon enough for me. I was just testing out a setup in my Revo last night and started to hear the dreaded clicking sound that always comes right before the rear diff goes. I have been holding off buying replacement diff parts (I usually have at least 1 set on hand) to rebuild it cuz I have been hoping for the 1/8 diffs to come out before i needed them.

I am really looking forward to these!

[TruckBasher]

OMG, I havent completed my BL EMAXX and I am already making plans for a BL REVO....:035:

This diff case are so SWEEEEET:004:

[jhautz]

I've been so anxiously awaiting these that I almost don't know what to do now that they are finally here! They look really well done. (as if I expected anything less from Mike)

These just came in the mail today. I am dying to get into these and start assembling/installing them, but It looks like I'm not going to get to that until this weekend. Can't wait.

For now... Heres a couple pics.
http://i66.photobucket.com/albums/h261/jhautz/CIMG1710.jpg
http://i66.photobucket.com/albums/h261/jhautz/CIMG1712.jpg
http://i66.photobucket.com/albums/h261/jhautz/CIMG1719.jpg

[BP-Revo]

Damn...those things look beautiful. I'll need mike to hook me up with some for sure. I wonder if the little nubs that let you use the stock sliders will work with OFNA torsen diffs?

[jnev]

Those thigns are incredable. They also make me want to make plans for an e-revo.

[BrianG]

Now I know what I'm getting after the CRT.5 project is done! Wow, those diffs are nice. I haven't broken a diff yet, but I imagine it'll be any day now...

[jhautz]

A little update. I started building them. Ones done. These things go together very nice. Took two .25mm shims behind the pinon to get a perfect mesh.

Very nice workmanship IMO. :004:

GREAT JOB MIKE!

Heres a couple more pics.

http://i66.photobucket.com/albums/h261/jhautz/CIMG1733.jpg
http://i66.photobucket.com/albums/h261/jhautz/CIMG1731.jpg
http://i66.photobucket.com/albums/h261/jhautz/CIMG1730.jpg

[BrianG]

Man, those look sweet! Nice pics.

I imagine these will change your overall reduction ratio compared to the stock diffs right?

[BP-Revo]

Yea...those look great...I wonder when they will be put onto the RCM store.

[jnev]

Like I said before, they look just awesome. Just one question, where did you get those .5mm shims? They are for the Hot Bodies diffs right? I ask because I will need the shims for my buggy to fit the Hot Bodies diff.

Thanks

[jhautz]

Man, those look sweet! Nice pics.

I imagine these will change your overall reduction ratio compared to the stock diffs right?

Yea, they will change the gear ratio. These are the truggy gears in this set. Mike is making them with either the Buggy 13/43 or Truggy 10/43 gears in them. I got the truggy gears cuz I just got done installing a HB center diff like Dafni's old setup and I wanted to lower the overall ratio since I dont have the transmision gear reduction any more. This will let me run a better motor pinion range.



Like I said before, they look just awesome. Just one question, where did you get those .5mm shims? They are for the Hot Bodies diffs right? I ask because I will need the shims for my buggy to fit the Hot Bodies diff.

Thanks

They are actually the shims I had for the maxx and revo diffs. The output shafts for the HB pinion is turned down to the same diameter as the standard revo pinion shaft. That allows you to use the stock revo drive shafts if you want. The shims are the 6x9x.5mm shims from Traxxas. So if you have shims around from your old revo or maxx diffs your all set.

BTW 2nd diff only needed one .5mm shim to mesh perfectly. Both are built now. I'm gonna break them in with a drill tomorrow night and then recheck the mesh before I install them.

EDIT: CORRECTION The shims I used are .25mm thick. So first diff took two .25mm shims and the 2nd diff took one .25mm shim. These are the ones i used. http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDEA8&P=7 (http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDEA8&P=7) FUnky how the package is labled. Looks like it should be .5mm shims, but they actually measure .25mm.

[jhautz]

2 built diffs. :018: :043:

http://i66.photobucket.com/albums/h261/jhautz/CIMG1737.jpg

[jhautz]

Jhautz, did the kit/cases come with pinion bearings, or do you need to buy them seperately?

No pinion bearings in the kit. They use the same ones as the stock revo diffs so you can steal from the old diff if you want. I had some new bearings sitting here already that would have been used in the stock revo diffs the next time I rebuilt them so I didnt even really think about it.

But yea, If you order the kit, make sure you have four 6x12x4mm bearings on hand, or like I said, you can just steal them out of the old diffs.

[Serum]

Mine are in the mail!

Can't wait to brag with some pics here.. LOL

[jhautz]

Mine are in the mail!

Can't wait to brag with some pics here.. LOL

I know... :dft001: Couldn't resist. They are just so pretty.:005:

[Dafni]

Nice, J! Now you have a real truggy driveline :) Congrats!


Check the backlash of the pinion after like 10-15 runs, you might want to re-shim them when the gears are "broken-in". Just a heads-up from a tester :)

[jhautz]

Nice, J! Now you have a real truggy driveline :) Congrats!


Check the backlash of the pinion after like 10-15 runs, you might want to re-shim them when the gears are "broken-in". Just a heads-up from a tester :)

Will do. Thanks Daf!

BTW: Nice work on proving these things out. They look like they are going to be bulletproof.

[CrazyPhantom]

Thank god you got some better pics than I got. I was wondering how easily you got the two case halves together?

[jhautz]

Getting the 2 case halves together was a little tight. I just had to make sure the flang on the outdrive bearings was lined up correctly and then it just took a little sqeeze and it snapped right together. It actually made it feel nice and solid to me.

[Serum]

I'll let you guys know how mine fall together. I should be having them within the next two weeks.

[renny]

The shim set that I use is from Team Losi.
#LOSA6356 Metric Shim Set, 5 & 6mm.
I payed $4.00 for a pack of them and there is about 6 of each in each pack.
I trashed two rear diffs in a month and my dealer sujested that I shim the diffs.
I already have the R&R ring and pinion gears,Integy alum. diff. cases and housings but its my spider gears that were stripping.
Now there is no slop and a very close mesh and I also switched to 10K oil in the rear and 30K in the front instead of 30K in both front & rear.
TONES OF HOOKUP on all surfaces.

[CrazyPhantom]

jhautz Have you gotten these diffs installed in the bulkheads yet?

[jhautz]

Not installed yet. I was hoping to get to this today, but other things got in the way. I'm gonna try and get to it tomorrow, but if I can't, it might not get done untill next weekend. (Traveling for work all week)

[rchippie]

What set of diffs is recomended for a revo 10/43 truggy ratio or 13/43 buggy ratio ?.

[jhautz]

OK got em set up and a test run in today before my reciever quit on me.

The install went fine. Only issue I had was the outdrive shafts were a litlle long and wouldn't quite just drop in from the top using the slots in the bulkhead like the stock diffs. I wound up having to split the bulks to get the diffs in. No big deal, took an extra 15 minutes per diff to install. Other than that PERFECT. Man its really packed in there though. They use every bit of real estate inside that bulk.

I talked to Mike today regarding the outdrive shaft length and I think hes going to look at a change for future production to ease the installation.

Ran em today and they ran great. Felt great being able to just jump on the throttle at low speeds and not worry about babying the diffs.

I was only able to get about a half hour of run time on them so far. My reciever kept quitting on me and then it just quit and wouldnt start again. But based on what Ive seen so far... these things look like a real winner. TOP NOTCH MIKE.:cool:

[crazyjr]

cool thanks for letting us know, i might have to get some after i get a slipperential

[jhautz]

What set of diffs is recomended for a revo 10/43 truggy ratio or 13/43 buggy ratio ?.

Depends on what transmision you are running. I'd guess the buggy 13/43 diffs would be better for slipperential and emaxx tranny vehicles and the truggy would be better for center diff setups. But do some math and calculate the gearing ranges you want and then you can decide.

[rchippie]

Depends on what transmision you are running. I'd guess the buggy 13/43 diffs would be better for slipperential and emaxx tranny vehicles and the truggy would be better for center diff setups. But do some math and calculate the gearing ranges you want and then you can decide.


I'm asking for my friend. He will be using them in a nitro revo, with the revo tranny..

[jhautz]

Then Id say the buggy diffs would be better. Staying closer to the stock gearing that way. The truggy diffs would lower the overall gear ratio quite a bit. Youd need to go up in pinion teeth quite a bit to compensate.

[rchippie]

Then Id say the buggy diffs would be better. Staying closer to the stock gearing that way. The truggy diffs would lower the overall gear ratio quite a bit. Youd need to go up in pinion teeth quite a bit to compensate.


Than you sir.

[Serum]

Yes, 43/13 is what you want for nitro.

[jhautz]

They are in the RCM store now.

http://www.rc-monster.com/proddetail.php?prod=rcmflmrvdf

[jollyjumper]

to answer bprevo's question:
a ofna torsen diff uses a output shaft with a hex end, where the worm gear goes over, so it wont fit.

[GorillaMaxx360]

sweet they are in the store. Too bad i dont have a revo or i would buy them immediatly. If i had to guess they will only be in stock for a while and then go out for a while like the slipperential. So get them while there hot!

[BP-Revo]

They were out of stock in like a two days!

[coolhandcountry]

Cool. I like them. I wonder if mike could sell a 1/8 diff with the stock type
shafts sticking out for a maxx. I like the looks of the revo diffs.

[skellyo]

Cool. I like them. I wonder if mike could sell a 1/8 diff with the stock type
shafts sticking out for a maxx. I like the looks of the revo diffs.

I thought the output shafts Mike includes with it do this:
"The custom modified parts will drop into and out of the revo bulkheads just like the stock diffs, and allow use of your current stock OR aftermaket drive shafts!"

Notice the output shafts on the right hand side of the pic:
http://www.rc-monster.com/prodimages/SINGLE_KIT_web.JPG

[jhautz]

Yep. That what those shafts do. You take the cups off of the diffs and replace them with the small shafts. He ships the parts so you can use it either way. With the cups or with the shafts for the stock sliders.

[Bobbyray]

Hey Mike
Got the parts and all work well. The Diffs are super, weather has been bad here so only can run it on the street, everything else is wet. Diffs work great went together with ease no problems. Will post on the REVO site tonite with pics of the new build on the E-REVO with all new parts. Thanks RRT

[SmokinAces]

Any idea when the 1/8 Revo diffs will be re-stocked?

[rc4x4nut]

Does anyone know if the MBX5T diffs fit? Its 46/10 instead of 43/10.

[RC-Monster Mike]

I should have some more Revo diffs tomorrow. I don't think the Mugen diffs will work - they are smaller than most 1/8 diffs.

[flyers6667]

Hi there.
Mike We need 3 pairs for our 3 revo in France.
Is it available today (Thurday) ? We have a French race on saturday 28th and sunday 29th. I should be great to have them on our Gorilla-Revo ;)
Best regards
Patrice

[dardevil]

mike you have news for soon, we wait to place order??:004: :004:

[BlackedOutREVO]

got a ??

i need 250 bucks spent to do hybrids in my e revo? or what?

[skellyo]

got a ??

i need 250 bucks spent to do hybrids in my e revo? or what?

Yes, $125 per diff/case.

From the description:
"These are sold per unit - 2 required for complete truck."

[celticclown]

Buggy diffs already sold out. wow.

[BlackedOutREVO]

Yes, $125 per diff/case.

From the description:
"These are sold per unit - 2 required for complete truck."


OUCH!!!!!!!!!!!! still im spending the money, im not going to screw with stuff that breaks lol

[flyers6667]

HI

I've received my Hybrid Diff, but the pinion has straight gears, not helical as shown on the pictures.
What about it ?
Is it reliable as the other one ?

Regards.
Patrice

[jollyjumper]

both have there cons and pro's, if they are 43/13 those dont exist helical cut i think. but it's not weaker or so, just different.

[flyers6667]

Merci Jolyjumper :005:
J'espère que le kit sera solide.

I hope the diff kit will be strong enough for my REVO ...I've got a French race this week-end, I hope it will kill some Trucks. :035:

See yaaaa

[jollyjumper]

j'espere ton revo marche bien, i hope your revo works well.
hows my french?
alot worse then my dutch i asume.
oh yes, where in france are you?

[flyers6667]

I'm in the south of France near of Béziers.
I'm going to Besancon this week-end.

Happy to know that there are some europeans here.

Tot ziens :)

[RC-Monster Mike]

The picture shows the "truggy" ratio, which has a high helical pitch on the ring and pinion gears. The "buggy" diffs also have a slight helical pitch(look close, they do have a slight curve), but it is not nearly as noticeable. You won't likely have any difference in overall reliability - the major difference is in the final drive ratio.
These are tough to keep in stock at the moment - getting and modifying the pinions is proving to be the biggest challenge. I should have the V2 ready in another week, which will accept standard(un modified) diff pinions with custom bearings and will include an 8mm drive cup. The V2 will also accept most 1/8 diffs(kyosho, ofna, Hot Bodies, etc.), so the cases can be sold seperately without the pinions.
These aren't a cheap product to manufacture, either. The shafts are custom made, the cases are of course custom made(and required loads of work to complete), the bearings are custom made(last batch and future batches receive the flanged bearings with a rubber seal on the outside for optimum protection and metal shield on the inside for lowest resistance). Lots of time and work is required to put these together - the good news is that these will likely be the last diff upgrade you need for the Revos(1/8 diff set - $250...finishing the race without blowing your diffs - priceless)!

[flyers6667]

Thanks mike.
What kind of silicone oil can I put inside ?
30K ? 100K ?
regards.
Patrice

[Dafni]

Well, diff oil choice obviously depends on the performance you are looking for.
Try something like 7K/25K/3K (front/center/rear... if you have a centerdiff) and go from there.

[SixShooter]

Well, diff oil choice obviously depends on the performance you are looking for.
Try something like 7K/25K/3K (front/center/rear... if you have a centerdiff) and go from there.

Ditto

You may want keep track conditions in mind as well. Now if you're just bashing, go with some thick stuff front and back.

[starscream]

Any word on the V2 cases?

[cabking]

I've just finished putting mine together tonight and am so impressed I just had to post something.
The quality is spot on (mine fit together very SNUG), as is the value for money. The machine work that has gone into these diffs is plain to see.......how do you machine a hardened pinon anyway??. :024:
I too needed a couple of shims behind the pinion (the same as any other diff i have owend) and if you love yours as much as i do then a set of helicoils for the case threads is a worth while job.
Excellent work Mike thanks.

I was touting these diffs on another forum, with some Nitro Revo owners. They were all adamant that the stock diffs were up to the job and there was no need for 8th diffs in a Revo............speaks volumes dont you think:005:

[Dafni]

Matter of fact, the stock diffs are fine.... if you don't mind rebuilding them after every second run :005:

[jhautz]

Matter of fact, the stock diffs are fine.... if you don't mind rebuilding them after every second run :005:

Amen to that!!

[MetalMan]

With the "slipperential" in my E-Revo, I have yet to have any problems with the stock diffs. And, I've never touched them, despite being the 2nd owner of the Revo.

[Serum]

You can consider yourself lucky.

[BrianG]

You guys must be really hard on your diffs! Mine are still holding up fine (knock on wood). Although, running on a dirt track does take some of the snap away since the tires don't hook up as good as on something like pavement.

[jhautz]

40 series Mulchers in grass will shred your diffs in minutes. I had to shelve the Mulchers untill I got the 1/8 dif uprade. Now Im golden. They will take anything. Once again..... Great Job Mike!

[cabking]

youve said it now Brian..........click...click....click :026: :027:

[jhautz]

youve said it now Brian..........click...click....click :026: :027:

Thats right... He just hexed himself. :005:

[BrianG]

lol, probably! If my username was AAngel, I would definitely be in trouble! :)

Actually, I'm expecting them to blow any day now. I'm just surprised they've lasted as long as they have. Oh, and I'm using regular Crimefighters...

[jhautz]

Nahhh... If you username was Aangel you wouldnt have anything to worry about! The ESC would blow long before the difs!:005:

[BrianG]

lol! Poor guy. I hope he doesn't see this thread or he'll think we're picking on him.

[Serum]

I bet he can waste 1/5th diffs in the blink of an eye..

[MetalMan]

Mine have held up with Badlands in pretty tall grass, of course with the "slipperential". Same with Maxx Mashers on pavement.

[squeeforever]

lol! Poor guy. I hope he doesn't see this thread or he'll think we're picking on him.

What would you call it then? :032: :005:

[BrianG]

What would you call it then? :032: :005:

Ummm, friendly ribbing? I think he knows it's not with malicious intent (let's hope)...