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  1. #1
    RC Turnbuckle Jr. kdvanb's Avatar
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    Kdvanbs RPM transmission case review/ write up

    So earlier today I was tempted to buy this RPM transmission case from my LHS
    And so I thought..
    Why not?

    Well I am pleased to say I am very happy with my purchase
    I was looking at this mainly to drop temps.

    Well as soon as I got home you know what I did
    Ran to the workshop and started wrenching down

    Took everything out and realised that the finish of the parts wasn't the greatest
    The aluminum plate was a little scratched
    But I don't want to take it out on rpm because it probably got scratched up from the shipment
    As I took out the internals I noticed I also stripped my differential (I just bought an idler gear thinking that was all the damage I had)
    Luckily I had a spare, but worn out one
    So I shoved that in there for now

    It took me a good hour or so to do the whole swap up

    I am a little disappointed with Rpm on how they did not include every screw they only supplied about half of what was needed
    You used your stock screws and the ones they supplied
    So unfortunately I have a few screws with rusty heads here and there

    Once I had it all assembled I had my Onyx 2s lipo all charged up
    I was ready to roll

    So here is the whole reason I bought it was to lower my temps
    So here is what would happen before I ran my truck
    I was running 23/86 gearing with proline streetfighters
    After a 4000mah lipo pack I would touch it and could only hold it on there for 3 seconds or so
    I know my temps were at least 120 maybe at most 140

    So here was my experiance today
    (NOTE: I only ran 3/4 of my battery as I had to help my dad)
    So I ran real hard on my slash trying to get the motor really hot..

    Ran it up beside me and go to touch the motor
    It was barely even warm!

    LOL my tires were actually hotter then my motor was, no lie!!

    I'm so happy with the performance of this transmission housing

    This is my first experiance with an aftermarket transmission
    If all goes well I am definitely going to purchase another

    One more positive
    It's black so it looks a lot better then the stock housing

    Here are my tally points do far
    Performance:10/10; I really felt it performed better.. When I hit the brakes it tracked straight instead of veering off to the side

    Price:10/10; I think this is a great deal especially considering you can get 2 of these for the price of an FLM case

    Looks: 8/10; some spots had weird splotches on the plastic, aluminum had some scratches

    Assembly: 8/10; really wish they could have included more screws
    Also the instructions wernt the greatest but I do admit the little chart off to the side showing 1/1 screw sizes really helped

    Durability: 10/10; really can't say much on this but nothing's gone wrong yet..

    So altogether... 46/50

    So 92% is my rating for this case


    I think I will be doing more reviews like this to help younger buyers get the most for their money as I am one of them.
    I will update you frequently
    After I get 5 or so packs threw this I will update you all

    I will also post some pictures
    Right now it's almost bedtime for me
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  2. #2
    RC Turnbuckle Jr. billy-bones's Avatar
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    I love my rpm cases but think they could have given you a rpm cover as well($7).
    As far as the screws.a lot of company's do that,but I also wish they would have but them in the kit.
    I like to have an entire trans ready on race day for quick chance if needed,but there could be worse things.
    If you run with out a cover the cooling effect is twice what it is with the cover,which makes perfect sense.
    But it is as strong as any rpm part would be expected to be,and that is what rpm is all about imo.
    I read the post about a broken c arm mount,but am pretty sure if it were any other unit the damage would have been just as bad if not worse.
    Built Ford Tuff With Chevy Stuff.

  3. #3
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    I picked up this case about two weeks ago and I've yet to install it. I'm still a relative newbie at RCs and I'm just very hesitant to take the trans apart. How difficult an install would you say this is for someone with really no experience in this area?

  4. #4
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    I think all the new cases should come with a few things that are missing. I know the hot racing case didnt have the idler gear shaft. I had to buy another traxxas gearbox to get one.
    My wife hates it but I love It.

  5. #5
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by rjwenter View Post
    I picked up this case about two weeks ago and I've yet to install it. I'm still a relative newbie at RCs and I'm just very hesitant to take the trans apart. How difficult an install would you say this is for someone with really no experience in this area?
    It probably will be time consuming for you

    If I were you I would take all the screws out and organize them by size
    When you take the stock transmission apart, all the screw that are in the left side, keep them in there far enough so they don't fall out, but you can still take the transmission casing apart

    When installing the internal gears make sure you don't loose any washer/shims in the process and make sure all of them are where they need to be

    Then follow the instructions carefully and all should go well
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  6. #6
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by geeves View Post
    I think all the new cases should come with a few things that are missing. I know the hot racing case didnt have the idler gear shaft. I had to buy another traxxas gearbox to get one.
    The rpm one didn't have an idler gear shaft either

    I think if ALL lcompanys included...
    - all the screw necessary
    - idler gear shaft
    - well detailed instructions (the rpm one wasn't bad but could have been better
    .,. It would be a better buying experiance for everyone
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  7. #7
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    Quote Originally Posted by rjwenter View Post
    I picked up this case about two weeks ago and I've yet to install it. I'm still a relative newbie at RCs and I'm just very hesitant to take the trans apart. How difficult an install would you say this is for someone with really no experience in this area?
    Youtube it there's some vids on how to rebuild the trans.

    What do you guys mean it should include a idler gear shaft, you just swap everything over, yea it'd be nicer to include all screws but they included the screws you needed to complete and you just use the stock screws since it's the same, +1 on the instructions though, I didn't even want to try to read em they're to cluttered

  8. #8
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by XRated View Post
    Youtube it there's some vids on how to rebuild the trans.

    What do you guys mean it should include a idler gear shaft, you just swap everything over, yea it'd be nicer to include all screws but they included the screws you needed to complete and you just use the stock screws since it's the same, +1 on the instructions though, I didn't even want to try to read em they're to cluttered
    The shaft the idler gear goes on
    He had a point about including it because if you starting fresh you need to get the idler shaft somewhere
    I agree too.. Mine was all worn out
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  9. #9
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    Oh I see, mine was fine but I did the swap probably 1 month after I bought my slash but I literally drove that thing everyday haha

  10. #10
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    Thanks for the advice guys - now all I need is a little courage lol

  11. #11
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by XRated View Post
    Oh I see, mine was fine but I did the swap probably 1 month after I bought my slash but I literally drove that thing everyday haha
    Aha me too
    I used to drive it a lot
    Then I lost interest after two months
    Then I got back in it just over a year ago
    Now I drive it a least once a week if I'm not waiting on parts

    I am actually going to run it now
    I will update at of you on the motor temps
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  12. #12
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    Quote Originally Posted by XRated View Post
    Youtube it there's some vids on how to rebuild the trans.

    What do you guys mean it should include a idler gear shaft, you just swap everything over, yea it'd be nicer to include all screws but they included the screws you needed to complete and you just use the stock screws since it's the same, +1 on the instructions though, I didn't even want to try to read em they're to cluttered
    I didn't break down my gearbox when i built another. I bought better bearings, sealed diff, hardened gears and strc layshaft.
    I had to buy Traxxas spacers, planetary gears and a new case to get the idler gear shaft. I felt cheated i had to buy the whole case to get the shaft. hahaha

    Now im wondering if the slash 32p gears in the nitro will work in our gearbox. That would be slick.
    Last edited by geeves; 06-10-2013 at 11:23 AM.
    My wife hates it but I love It.

  13. #13
    RC Turnbuckle Jr. kdvanb's Avatar
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    Okay so I just finished running my slash
    Unfortunately it was raining after 30 minutes of running
    Checked temps with my food thermometer and temps were 110*
    Im not sure how accurate It is but I will get a real temp gun soon
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  14. #14
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    I ran my slash in the rain once haha I got soaked but it was fun

  15. #15
    RC Turnbuckle Jr. kdvanb's Avatar
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    I used to do it all the time
    But now my truck isn't waterproof
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  16. #16
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    yea that's 1 thing about traxxas their product is really waterproof haha trust me I know, I don't know if you seen my older post awhile back but my slash went in my pool completely submerged about 3-4ft. deep for about 10 seconds twice haha and everything worked fine still even the lipo

  17. #17
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by XRated View Post
    yea that's 1 thing about traxxas their product is really waterproof haha trust me I know, I don't know if you seen my older post awhile back but my slash went in my pool completely submerged about 3-4ft. deep for about 10 seconds twice haha and everything worked fine still even the lipo
    Wanna hear a crazier story?
    My best friend drove his into a freezing cold lake
    Got it out the next day
    Everything was fine
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  18. #18
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    Quote Originally Posted by kdvanb View Post
    Wanna hear a crazier story?
    My best friend drove his into a freezing cold lake
    Got it out the next day
    Everything was fine
    so it had to sit in a lake overnight haha why didn't he get it the same time it happened

  19. #19
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by XRated View Post
    so it had to sit in a lake overnight haha why didn't he get it the same time it happened
    It was already 9 and pretty dark out
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  20. #20
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    hahah that sucks, crazy if everything was still working

  21. #21
    RC Turnbuckle Jr. billy-bones's Avatar
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    I got lucky,a good friend who has been into rc for a while had a couple idler shafts he gave me.
    Its bad enough they don't give you one,but as said above you cant even buy the darn thing by it self.
    I felt cheated i had to buy the whole case to get the shaft. hahaha
    I agree 100%
    Built Ford Tuff With Chevy Stuff.

  22. #22
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by billy-bones View Post
    I got lucky,a good friend who has been into rc for a while had a couple idler shafts he gave me.
    Its bad enough they don't give you one,but as said above you cant even buy the darn thing by it self.
    I agree 100%
    Lucky you

    Just put another pack through it
    Then my wheel was lop sided a bit
    Luckily it was only a bearing
    Phew
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  23. #23
    RC Turnbuckle Jr. O.G.'s Avatar
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    What no pics??? C'mon kdvanb!!

    I'm tempted to pick up one of these, but I just bought another HR case and have yet to put it in a truck. Nice review so far.
    My Black & Blue Rally is faster than your color...

  24. #24
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by O.G. View Post
    What no pics??? C'mon kdvanb!! .
    Sorry!! Sorry!!
    I do have pictures taken but I just need to upload them to photobucket and put them on here
    I'll put some pictures up when I get all my parts in so I can update all my build threads
    Then I can do them all at once
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  25. #25
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    Very intereting,
    I have been really not to sure about the hybrid thing, but after seeing so many people use it, and its realibility Imay go for one too.
    I have always thought of full metal when going for the gear box....looks like I may hav eto get one to test on the pede.
    Nice review
    Live life to the fullest

  26. #26
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by Jezza View Post
    Very intereting,
    I have been really not to sure about the hybrid thing, but after seeing so many people use it, and its realibility Imay go for one too.
    I have always thought of full metal when going for the gear box....looks like I may hav eto get one to test on the pede.
    Nice review
    Thanks Jezza
    I'll probably get one for my pede soon too
    I'll get my 3s lipo soon and test it with the transmission case
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  27. #27
    RC Turnbuckle Jr. kdvanb's Avatar
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    really enjoying my rpm transmission case
    here are the pics

    before







    after





    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  28. #28
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    So glad i am not running those 48p gears anymore! seeing yours give me nightmares lol. Great write up btw. Also how did you get so many posts Kdvanb?? Like i was off of here for like 3-4 months and you just sky rocketed with the posts!! You can post pics with that app for ipod you know.

  29. #29
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    What do you guys think about the proline performance tranny?

    http://prolineracing.com/performance...-transmission/

  30. #30
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    TO MUCH MONEY FOR NOTHING ASK Billy Bones about it

    Quote Originally Posted by Drew_1295 View Post
    What do you guys think about the proline performance tranny?

    http://prolineracing.com/performance...-transmission/
    Anza Slash & a pile of Parts

  31. #31
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by Iceroad2 View Post
    So glad i am not running those 48p gears anymore! seeing yours give me nightmares lol. Great write up btw. Also how did you get so many posts Kdvanb?? Like i was off of here for like 3-4 months and you just sky rocketed with the posts!! You can post pics with that app for ipod you know.
    Ahha I don't have a problem with 48p
    Actually I've only stripped 5 spurs with 48p between 3 trucks and 7 32p spurs on just one truck

    LOL I find things interesting so I just post?
    I'm on the forums a bit more then i was back then

    Yeah I know but it cost like 2$ little pricey
    I find photobucket okay
    I might get that app soon though
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  32. #32
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by skye View Post
    TO MUCH MONEY FOR NOTHING ASK Billy Bones about it
    Agreed 100%
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  33. #33
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    Quote Originally Posted by kdvanb View Post
    Ahha I don't have a problem with 48p
    Actually I've only stripped 5 spurs with 48p between 3 trucks and 7 32p spurs on just one truck

    LOL I find things interesting so I just post?
    I'm on the forums a bit more then i was back then

    Yeah I know but it cost like 2$ little pricey
    I find photobucket okay
    I might get that app soon though
    Ok, i find that my 32p spurs are easier to change out as well but idk. yeah i finally bit the bullet and bought the app. also think you have to spend like another buck once you have it to be able to post unlimited pics. but i find it much easier then loading them onto the computer and then on to photobucket and then the forum.

  34. #34
    RC Turnbuckle Jr. kdvanb's Avatar
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    Quote Originally Posted by Iceroad2 View Post
    Ok, i find that my 32p spurs are easier to change out as well but idk. yeah i finally bit the bullet and bought the app. also think you have to spend like another buck once you have it to be able to post unlimited pics. but i find it much easier then loading them onto the computer and then on to photobucket and then the forum.
    I send mine by email
    Slash 2wd, Slash 4x4, 30th digger, Rustler VXL

  35. #35
    RC Turnbuckle Jr. billy-bones's Avatar
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    Quote Originally Posted by Drew_1295 View Post
    What do you guys think about the proline performance tranny?

    http://prolineracing.com/performance...-transmission/
    After you replace the lay shaft,slipper,idler gear,and buy a hot racing hardened diff,their fine.
    In other words the only thing about them worth a darn is the case with larger out put shaft bearings.
    Just replaced a diff for some one this morning,about the fourth time this month.
    Poor investment.
    Built Ford Tuff With Chevy Stuff.

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