The unofficial official axial portal buggy.

[Robbob]

Originally Posted by RCTom

What make/model is that 11T pinion you're using? I'm having a hard time finding 48P pinion gears that small. I see on the RPP website they have some Robinson Racing extra hard and wide 11T pinions with an aluminum collar (https://www.rpphobby.com/product_p/rrp1411.htm) but I'm unsure if the extra wide will fit the Capra. Does anyone know, or have any other suggestions? Also, you're saying that 10T and less tooth pinions won't mesh right, huh?

BTW, I'm probably using the same motor in my Capra as you, an HH Puller Pro Stubby 2700 kv.

https://www.rpphobby.com/product_p/tra6747.htm

[Panther6834]

Originally Posted by Robbob

https://www.rpphobby.com/product_p/tra6747.htm

How does that work...just curious? The Traxxas pinion is 32P, while the Axial spur & pinion are 48P.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

[svt923]

Originally Posted by Panther6834

How does that work...just curious? The Traxxas pinion is 32P, while the Axial spur & pinion are 48P.

Capra gears are 32P not 48P.

[Robbob]

Originally Posted by Panther6834

How does that work...just curious? The Traxxas pinion is 32P, while the Axial spur & pinion are 48P.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

No, the internals 48 .... the spur and counter are 32

https://www.rpphobby.com/product_p/axi232012.htm

[Panther6834]

Originally Posted by Robbob

No, the internals 48 .... the spur and counter are 32

Originally Posted by svt923

Capra gears are 32P not 48P.

That's "strange", because, according to Horizon Hobby/Axial, this is the pinion used in the Capra - Pinion 48P 14T Steel (AXIC0569).
https://www.horizonhobby.com/product...steel-axic0569

~ More peace, love, laughter, & kindness would make the world a MUCH better place

[Sneetches]

Originally Posted by Panther6834

That's "strange", because, according to Horizon Hobby/Axial, this is the pinion used in the Capra - Pinion 48P 14T Steel (AXIC0569).
https://www.horizonhobby.com/product...steel-axic0569

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Yeah that's definitely a mix-up, if anything the part # should be AX30725.

[Panther6834]

Originally Posted by Sneetches

Yeah that's definitely a mix-up, if anything the part # should be AX30725.

Got ya ..another Axial "good-up". I'm sure these problems will be corrected soon enough.

So, to answer RCTom's question, then that would mean the 12T pinion should be AXI30838, and the 11T should be AXI30837.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

[MrFridayNight]

Originally Posted by Panther6834

That's "strange", because, according to Horizon Hobby/Axial, this is the pinion used in the Capra - Pinion 48P 14T Steel (AXIC0569).
https://www.horizonhobby.com/product...steel-axic0569

~ More peace, love, laughter, & kindness would make the world a MUCH better place

This is very interesting. The spur is obviously 32p by looking at it. However, the intermediate "idler" gear - as pointed out by others - looks to have an odd "intermediate" tooth profile. Looks like we need a Capra owner to chime in if the pinion is 32 or 48.

[rockspider]

Capra owner here!
Pinion idler and spur are 32p, tranny internals have smaller teeth, could be 48 but personally just assembled it without comparing gears...
By the instruction sheet the stock 14t 32p pinion is AX30569, and by the Horizon site picture, that looks like the correct pinion, with large shank and M4 grub.
Maybe it's just a misprint on Horizon page 48vs32...

[Sneetches]

Originally Posted by Panther6834

Got ya ..another Axial "good-up". I'm sure these problems will be corrected soon enough.

So, to answer RCTom's question, then that would mean the 12T pinion should be AXI30838, and the 11T should be AXI30837.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Well now you have to watch there as well, because those are the 5mm motor shaft pinions. That size of shaft is typically found on larger motors in 8th scale buggies/monster trucks, etc. The part number for the 1/8 bore pinion is AX30722 for 11T and AX30723 for 12T, that's if you go with an Axial pinion anyways.

[Almighty Malach]

Originally Posted by MrFridayNight

This is very interesting. The spur is obviously 32p by looking at it. However, the intermediate "idler" gear - as pointed out by others - looks to have an odd "intermediate" tooth profile. Looks like we need a Capra owner to chime in if the pinion is 32 or 48.

The pinion, spur and counter gear are all 32p. Can't have a 48p pinion mesh with the 32p counter gear...

[TheLetterJ]

Originally Posted by RCTom

What make/model is that 11T pinion you're using? I'm having a hard time finding 48P pinion gears that small. I see on the RPP website they have some Robinson Racing extra hard and wide 11T pinions with an aluminum collar (https://www.rpphobby.com/product_p/rrp1411.htm) but I'm unsure if the extra wide will fit the Capra. Does anyone know, or have any other suggestions? Also, you're saying that 10T and less tooth pinions won't mesh right, huh?

BTW, I'm probably using the same motor in my Capra as you, an HH Puller Pro Stubby 2700 kv.

Originally Posted by TheLetterJ

I was playing around with pinions and managed to get good mesh with an 11t. There's just enough adjustment to be able too get it too tight so I tried a 10t on. While the 10t could touch the spur, it's certain to die a rapid death with only about 1/2 engagement. I couldn't tell if I ran out of slot first, or if the Puller Pro Stubby hit the transmission case first, but either way, 11t was the end of the road for me. I didn't check the high end of adjustment, but I'll leave that to the guys with a need for speed.

It's most definitely 32p. I have a bunch of pinions laying around, so I can't say for certain, but I believe I used a Traxxas 6747, the one that looks like sintered metal. I did not use my Robinson extra hard pinion just because I've had problems using dissimilar metals in the past, where the harder gear chews up the softer gear in short order, no problems when running metal (any) on plastic though.

[RCTom]

Originally Posted by TheLetterJ

It's most definitely 32p. I have a bunch of pinions laying around, so I can't say for certain, but I believe I used a Traxxas 6747, the one that looks like sintered metal. I did not use my Robinson extra hard pinion just because I've had problems using dissimilar metals in the past, where the harder gear chews up the softer gear in short order, no problems when running metal (any) on plastic though.

Wow, ain't I glad I asked! I'm currently at work and the car/manual are at home so I looked at Horizon/Axial website for info. Like Panther said, it's definitely listed as 48P. Very glad y'all know better!

Getting a 32P pinion in those lesser tooth counts is no-problemo. They should have those in stock at my LHS.

Just to verify, the spur gear is metal on the Capra, correct? Better check now just in case the interwebs is wrong again!

Originally Posted by Sneetches

The part number for the 1/8 bore pinion is AX30722 for 11T and AX30723 for 12T, that's if you go with an Axial pinion anyways.

Sneetches/LetterJ and all else: I usually use Robinson Absolute hardened gears because my LHS has them in 32P. Plus, I've never had a failure yet.

With that said, I've always used them with plastic spur gears so I never gave the dissimilar metal thing any thought. If not a Robinson Absolute gear, what about any of their Steel Alloy gears, or even an aluminum gear (as you can tell, my LHS mostly has Robinson gears).

I can always order the Traxxas versions online if the Robinson gears can't be used.

One last thing about LetterJ's comment about the mesh problem with pinions smaller than 11 tooth. I'm building my Capra with that 2700 kv motor I mentioned for outdoor work. When I move to an indoor course over the winter it seems my combo may be too fast (per SVT's awesome build thread ). My first thought was to swap in a smaller pinion but it sounds like that may not be possible. Just trying to verify. Sounds like I may be swapping motors for winter use.

[TheLetterJ]

"Too fast" is kind of a personal opinion, but I will say that I wouldn't complain if it was slower. The thing is, it'll only go as fast as you tell it to when you squeeze the trigger, so as long as you're happy with the low end/start up, there's no reason to change your motor out. (flame suit on) With a few minor exceptions, lower kv motors don't really start up any smoother anyway. You can always drop from 3s to 2s if it's too jumpy for you.

All of the transmission gears in the Capra are sintered metal (including the idler gear that the pinion mates with), or, "the particle board of the metal world" if you will. It's plenty strong for the application, but like I said, I've had problems with running hardened steel gears against non-hardened steel gears before, so I chose to use the crappiest looking 11t pinion I had on hand (assuming it's also sintered)... which just happened to be Traxxas... I think.

[GA Dawg]

Originally Posted by TheLetterJ

I chose to use the crappiest looking 11t pinion I had on hand

Same here, but it was also the best looking.

[Brake Weight]

I put a 80t motor and a 17 tooth pinion. LOL. I couldn’t get the 19 tooth to mesh right, so looks like 17/18 is as tall as you can go. Plenty of TQ, not enough wheel speed though. Maybe on 3s but I doubt it. The claims of a ‘higher speed’ tranny early on spooked me and I ran that motor vs the 45t I initially intended to run.

[RCTom]

Originally Posted by Brake Weight

I put a 80t motor and a 17 tooth pinion. LOL. I couldn’t get the 19 tooth to mesh right, so looks like 17/18 is as tall as you can go. Plenty of TQ, not enough wheel speed though. Maybe on 3s but I doubt it. The claims of a ‘higher speed’ tranny early on spooked me and I ran that motor vs the 45t I initially intended to run.

I don't know if I've ever seen an 80 turn motor run, LOL. But it's good to know that the pinion tooth range seems to be between 11-18 teeth for this rig.

[Panther6834]

I still have to paint the grill, I was "test fitting" my headlights. While I like the fact that Axial included built-in buckets, I had something else in mind...so, without even knowing if what I was intending to use would actually fit, I went ahead, popped out the headlight covers, and cut the buckets off from the back. Thankfully, they fit. Otherwise, I would have had to order a replacement grill.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

[punkindrublik]

Opened up my "loud" tranny and put in an RRP 11t pinion last night and now it's a quiet tranny.

[JatoTheRipper]

Originally Posted by Panther6834

I still have to paint the grill, I was "test fitting" my headlights. While I like the fact that Axial included built-in buckets, I had something else in mind...so, without even knowing if what I was intending to use would actually fit, I went ahead, popped out the headlight covers, and cut the buckets off from the back. Thankfully, they fit. Otherwise, I would have had to order a replacement grill.

~ More peace, love, laughter, & kindness would make the world a MUCH better place

Nice! Where can we get those lights?

Originally Posted by punkindrublik

Opened up my "loud" tranny and put in an RRP 11t pinion last night and now it's a quiet tranny.

That's odd because usually smaller pinions mesh worse and get louder from what I remember. I'm guessing the machined gear rather than cast, sintered stock gears may have something to do with it.