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Stripped my spur gear today - question og replacement...

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S

Sasquatch

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GRRRR :censored:


Took my Maxx out today with a friend to burn some nitro...

Everything went fine. Untill... RIP... Doooh!!!


Lyckily I got a Kimbrough replacement, but my question is:

Should I get a Steel Spur. I've looked at the one from Robinson Racing.

Vill I just be pushing my luck and brake something else more expensive ?

Perhaps that's why it is plastic in the first place..

What are you using ?

Regards
 
I've been running steel spur gears (the RRP ring spur set up) since a month after I bought my T-Maxx (about a year and a half now).

Yes, you do face the potential for really screwing things up if your gear is steel. But that potential exists with plastic also. The key is in the mesh. Properly set and maintained gear mesh will just about negate any concerns of spur gear stripping. Once you have the mesh nailed, the only thing you have to worry about is chassis flex.

Solution: Set the mesh. Loctite the engine mount screws and snug them up tight to make sure the engine does not back away. Make sure your slipper set up is at the right tension to not over stress the tranny or the spur/clutch bell gears.

Solution for chassis flex: Too numerous to list. A good start...get some aluminum or titanium chassis braces. Get an aluminum or titanium center skid plate. This creates a solid box beam construct beneath the center of the chassis plate and limits the flex. Next, get a thicker chassis plate (if you have the 2.5 Maxx, you already have one of the thicker chassis plates out there.). You could also go as far as getting aluminum or titanium bulkheads and bulkhead braces. This extends the rigidity of the spine supporting the chassis plate from nose to rear on the truck and further reduces the chances of chassis flex.

Bottom line is that you need to nail the gear mesh and limit the chassis flex.
 
OK

Thanks for replying..

Urks. A lot of additional upgrading then.. Let me think about it hehe.

A quick question about the Friction Slipper Pegs. I noticed today that there were 6 mounted, but room for 12 pcs.

Should I put in more or is there no difference. ??

Regards
 
If you plan on running a full steel spur gear, then you will need the 12 slipper pegs.

Please note that the upgrades I mentioned are only for working to guarantee no more stripping of the spur gear. The gear mesh issue is about the 98% solution. So, once you have the mesh set you should be golden.

The other 2% is attributable to things you can't truly control...like chassis flex.

Bottom line is that you do not NEED to do all the upgrades mentioned to remove nearly all chances of further gear strippage. All you really need to do is work to keep the gear mesh spot on.

If you really want to go with a great spur gear set up, try the RRP dual slipper disk set up on the RRP ring spur gear set. Excellent and nearly equal in weight to a plastic set up, not to mention the dual slipper set up (in my opinion) is a better set up than the stock slipper.
 
Would it be the one on this page the second from the top ??

I'm unable to find it on Tower, but have done buisiness with there guys before. Great service.

Thanks again. :-)
 
Sorry, no link to see, but I'll give you a couple of my own:

http://www.robinsonracing.com/

The entire set up is the image in the middle of their opening graphic. I'll try and find a place that sells them and link to it for you.

Here's the set-up for sale at TowerHobbies:

http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXBJC6&P=7

If you look here on TowerHobbies about midway down the page, you will see a couple of options with the RRP set-up:

http://www2.towerhobbies.com/cgi-bin/WTI0095P?FVSEARCH=robinson&FVPROFIL=++
 
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No problem. I hope you get everything sorted out.
 
I've heard good AND bad things about metal spurs. I decided to stay away from them, the plastic spur is the "weak" link in the drive train. Its the 1st thing to go before the internals in the tranny go. I've heard it's best to use all 12 slipper pegs like sky said. I also heard of an alternate to slipper pegs. I think they're small balls that fit into the holes. Made by AE. I can't think of the name of them right now though......
 
I think I'll go for the Robinson Racing "everything"

Double Slipper thingie w. metal spur, dual brake, metal pinion.

Perhaps I also should replace something in the tranny.

Is the T-Maxx 2.5 tranny all metal gears or plastic inside ??

If plastic. What will I need to replace. Will It be expensive.

Regards

Edit: Just to eliminate the "weak link" or at least make it all metal.
 
the "weak link" AKA spur is actually/also a sort of safety. It just prevents other stuff from breaking. It is a good idea to upgrade the tranny just like you wanted to do. I'm pretty sure that the new 2.5 has plastic tranny gears just like the the 1st generation maxxes.
 
Hmmm OK.

I'm not an expert on transmissions..

Do you happen to know what parts I will have to buy to replace whats plastic to metal ?

I might as well go all the way and buy it all at first.
 
i got a question. my friend is running an robinson racing metal spur gear on his t-maxx. same with me but i have all 12 of the slipper pegs and he only has 6. our trucks still run somewhat the same but mine has a bigger motor too it too so it goes faster and everything. but what would the slipper pegs do to his truck if he only had 6 in the metal spur gear?

bryan
 
You can run with 6 or 12.
The more surface aria you have (More Pegs) the smoother it should slip. More pegs will also last longer and stay cooler.
 
That looks an awful lot like the RRP dual slipper disk set-up. I am quite happy with it.
 
Totally different....Lining material will withstand the power of high output engines....Try hooking up a RRP to a C5, if it doesn't shred the gear, it will fry the lining in pretty quick order.

The Strobe lets you use Ofna clutch bells..... = Stronger!

I have used RRP products myself and have been happy with them. I have also watched the owner of our local track walk around at the end of the weekend, and pick up bits and pieces of RRP slipper gears.....

The Strobe is the most bullet proof set up out there.

JM2CW
:yes:
 
I guess I'll have to take your word for it.

I run the RRP dual slipper with steel ring against an Ofna hardened clutch bell on a Fantom. No problems.
 
My RRP handles the Sirio .18 and its an animal. I have also seen the RRP handel the Hyper .21 8 port in a Maxx and a XTM 24-7. I with full confidence would throw my Sirio .21 (if it were possible) and know that mr RRP slipper would hold up. Have you actually tried a RRP with a C5 like you say? I am talking about the new redisigned RRP dual slipper so we might be talking about a different product. Anyways I think your blowing smoke but thats my opinion.
 

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