Granite Pinion and spur gear

[jonUF02]

I want something a 3-4 year old can learn to drive at WOT without damaging anything or anyone. Not really concerned about the technical aspects of crawling per se, just the fact that crawlers are slow RCs.

 

[Jerry-rigged]

Just get a basic crawler. I don't think you will be able to get anywhere near the same articulation with the Granite suspension and chassis you could get with a actual crawler. If you want to crawl over stuff and go slow get a crawler. If you just want to slow things down to learn on then speed things up get a Granite.

This. A Redcat Gen7 is $200, and will out-crawl a highly modified Granite any day. A Redcat Gen 8 is $350, and will outcrawl 80% of RTR scaler crawlers...

I want something a 3-4 year old can learn to drive at WOT without damaging anything or anyone. Not really concerned about the technical aspects of crawling per se, just the fact that crawlers are slow RCs.

With kids that young, it is more about the kid than the car. I tried to get my two younger kids into RC at 5 and 6 (they are a year apart). The 6yo wanted to go WOT everywhere, and tended to stay on the throttle long after the car had crashed... LOL my 5 yo quickly learned throttle control, and I would let her drive my Kraton, on 4s. Now, several years later, my son (who had throttle issues) love the crawlers, my girl loves to go fast on the track. And make the car crash and cartwheel for 50'.... LOL

If just slowing down the RC is the goal, then just run the truck on the 50% setting. If that is not slow enough, spend your money on a radio like the RC4Gs or a Dx5C. These have digital end-point adjustments, so you can dial the speed down as slow as you like it. Also, you can set up several model profiles. On my RC4G, I have a "Kid" profile, and a "Dad" profile. For the Kid - throttle is set to like 30%. 5 second of button click, and Dad has 100% power for my turn...

 

[Cheapbastard]

I want something a 3-4 year old can learn to drive at WOT without damaging anything or anyone. Not really concerned about the technical aspects of crawling per se, just the fact that crawlers are slow RCs.

I think that there is a misconception about brushless. Is it fast yes but can it be slower yes it can also. There are lower kv motors and 21.5 turn brushless motors out there that won't be blazingly fast. Which may not be a bad way to learn I mean you can run a 6s on 3s then volt up when you're ready for more speed. I actually prefer this instead of neutering the power with the radio. With something like the Granite pop in a 3650 2300kv motor and run it on 7.2v nimh it will be slow. Move up to 2s it will be a little faster.

 

[jonUF02]

This. A Redcat Gen7 is $200, and will out-crawl a highly modified Granite any day. A Redcat Gen 8 is $350, and will outcrawl 80% of RTR scaler crawlers...


With kids that young, it is more about the kid than the car. I tried to get my two younger kids into RC at 5 and 6 (they are a year apart). The 6yo wanted to go WOT everywhere, and tended to stay on the throttle long after the car had crashed... LOL my 5 yo quickly learned throttle control, and I would let her drive my Kraton, on 4s. Now, several years later, my son (who had throttle issues) love the crawlers, my girl loves to go fast on the track. And make the car crash and cartwheel for 50'.... LOL

If just slowing down the RC is the goal, then just run the truck on the 50% setting. If that is not slow enough, spend your money on a radio like the RC4Gs or a Dx5C. These have digital end-point adjustments, so you can dial the speed down as slow as you like it. Also, you can set up several model profiles. On my RC4G, I have a "Kid" profile, and a "Dad" profile. For the Kid - throttle is set to like 30%. 5 second of button click, and Dad has 100% power for my turn...

I'm very interested in a Redcat Gen8 I see someone selling new kits on ebay with CLEAR bodies, so I can paint it pink or purple for a girl only $250 fully RTR other than body paint.

I'm just wondering what she would like better; a monster truck style like daddy, or the realistic crawler that's smaller than daddy's. The crawler is something I could possibly use myself, but not very interested in driving slow RCs personally. Then I was looking at a lot of reviews saying TRX4 is all around better tougher 1st crawler, so for $280 I can get the TRX4 sport kit with clear body then add the motor and esc for abotu $50-60 and I have the rest, up to about $350 all-in.

Then I got to thinking she may like the slow Granite "crawler" concept better because it's bigger, more like mine, and it can be sped up when skill level permits.

I do have the Traxxas radio system with bluetooth app where I can set the training mode % easily to whatever I want, but I would rather just have a truck that is slow as designed; on and off without fooling around, just for the kids. Training mode limited by software has a strange throttle feel, very artificial. I think the purpose build would feel more natural and drive better interest from the kids.

 

[Jerry-rigged]

I actually prefer this instead of neutering the power with the radio.

To me, installing a low KV motor is more of a neutering. With the radio EPA or DR, you can dial it up or down as needed.

I do have the Traxxas radio system with bluetooth app where I can set the training mode % easily to whatever I want, but I would rather just have a truck that is slow as designed; on and off without fooling around, just for the kids. Training mode limited by software has a strange throttle feel, very artificial. I think the purpose build would feel more natural and drive better interest from the kids.

Intresting to hear that. I wonder if the Traxxas training mode also changes the throttle curves or something else? With my RC4G, I use the EPA and DR a lot to change the speed. For kids, like I mentioned, but also for myself, at the track. (My Typhon has 3 Model memory slots on my radio, Bash (100%) Track (80%) and kid (30%)). I will run 4s on 60% for my warm up pack, then slowly dial up the throttle as I get in the groove, normally up to about 80%. This past weekend, I was running 6s at the track (didn't have enough 4s packs) with the DR set to to 60%. (used DR instead of EPA because it hits reverse too). Running the track, the feel of the truck was the same as running 4s at 80%. Later a 12yo with a 2wd brushed slash showed up, I dialed the throttle DR back to 40% and handed him the radio. Really, quick and easy.

 

[jonUF02]

RC4GS looks interesting, not bad on the price. I also like the Traxxas app for tuning all the steering, brake, all parameters to do with the radio right on the app phone screen, although I rarely do that to be honest.

I'm OK with "neutering" a 3s to a slow brushed system as a dedicated kid truck until the time comes to upgrade again. If I pay $300 for the BLX granite, then sell the motor/esc for about $100, then add back $50 for the brushed motor/esc I'm back around the $250 price equal to the Gen8, so I'm really up in the air on this one. Kinda waiting until Ebay has another 10% coupon or bucks rebate sale to pull the trigger on something.

 

[Cheapbastard]

The whole discussion gets thrown out the window if just use the radio to dial down the speed. Why buy anything new if all you're gonna do is turn it down with the radio you can do that with anything. Why buy something new use what you got just get a radio to turn down the speed to turn it into a so slo-mo crawler. You can do that on anything then right?

You don't need a crawler or anything new or even buying a Mega and putting in a 21t motor if all your gonna do is turn down the speed with the radio.

 

[jonUF02]

Already tried turning down my Outcast 4s, feels very weird and artificial, also want two separate trucks.
I should say it feels weird at 20% to slow it down that much. Training mode at 50-80% probably not so bad, but too fast.

 

[Cheapbastard]

Already tried turning down my Outcast 4s, feels very weird and artificial, also want two separate trucks.

This is what I mean by using the radio instead of a different motor or voltage. Use voltage difference instead of radio EPA difference. Like using 4s instead of 6s and turning down the radio. I agree with you about having separate trucks. I would rather hand over my brushed Evader for someone to drive rather than turning down the EPA and letting someone new use my Granite on 3s it does feel weird.

 

[Jerry-rigged]

Already tried turning down my Outcast 4s, feels very weird and artificial, also want two separate trucks.
I should say it feels weird at 20% to slow it down that much. Training mode at 50-80% probably not so bad, but too fast.

If it feels weird to turn it down on the radio, it will feel just as weird with a slow motor that makes a pseudo-crawler... The Radio is not what is making it feel off, the truck is designed to run 30-50mph. At 10mph, it will just not be the same. It does not matter whether you turn it down or put a slow motor in it.

One thing that is "weird" - from what I read, the 75%/50% switch on the radio seems to disable reverse and dials the breaks to almost zero. If you have a radio with seperate EPA for forward and backward, then this is not an issue. You can turn down forward and leave reverse the same. Just make sure your ESC has reverse NOT set to 100%. Yup, I made that mistake... LOL

 

[jonUF02]

Well I just scored a used Granite BLX with an extra unpainted body for $200 on Ebay. I have the radio from my 4s that is supposed to be junk, but has the limit switch, maybe I'll try that. Also have a 2s battery, so we'll see what kind of setup I come up with.

https://rover.ebay.com/rover/0/0/0?mpre=https://www.ebay.com/ulk/itm/392636252236

 

[slick2500]

If it feels weird to turn it down on the radio, it will feel just as weird with a slow motor that makes a pseudo-crawler... The Radio is not what is making it feel off, the truck is designed to run 30-50mph. At 10mph, it will just not be the same. It does not matter whether you turn it down or put a slow motor in it.

One thing that is "weird" - from what I read, the 75%/50% switch on the radio seems to disable reverse and dials the breaks to almost zero. If you have a radio with seperate EPA for forward and backward, then this is not an issue. You can turn down forward and leave reverse the same. Just make sure your ESC has reverse NOT set to 100%. Yup, I made that mistake... LOL

Do they make escs with 100% reverse?

 

[jonUF02]

The Ebay one fell through, but made a deal local for a used Granite BLX with the TTX for $200. Has anyone used a pinion as low as 11T? I'm thinking this on 2s would slow it down sufficiently, but would it burn the motor (spin too fast)? All I would need is the adjustable mount and common 11T pinion.

 

[Jumperj]

Depends on the size of motor you are running. I am currently running a 23T Pinion and 91T Spur with a 4000Kv HobbyWing motor.

Could u send me the link for that spur & pinon. I have same set up a hobbiewing max10 sct 3660SL motor 4000Kv.

If you are running the stock motor, stay with the 14t/91t stock gearing. The motor barely has power to turn that gear, any higher, and it will just overheat quicker. If you are planning a brushless upgrade -

Pinion - the stock motor mount is a 'noob mount' - with paired holes for specific pinions. Makes getting the correct gear mesh easy (no adjustment) but limits your pinion choices (no adjustment). From the factory, your only choices are a 14t, 17t, or 27t. Several of us have simply cut between two of the holes (made a channel) so that we can mount any size pinion you want. Easy to do, but be sure and use a washer under the motor mount screw after you cut the mount.

Spur - If you want to stay with a Arrma drop in replacement, right now your only option is the stock 91t spur. In another month or so Arrma should be (hopefully) stocking the newer BLX4s spurs - M0.8/32p, 57t. (The stock 91t 48p is about equal to a 60t 32p). It will need the whole HD slipper to go with it.

If you like to mod, several of us have fitted 32p spur gears from the Axial Yeti. They are 32p, and available in several sized from 56t up to about 64t? Also metal gear options. A bit of custom work is required, but nothing hard. Here is a video I made on the conversion. Note - for the spur spacer, in this video, I used a strip of soda can as a spiral wound spacer, that did not last, I swapped to a spacer made from .018" SS plate(I think that is 24gauge?). Hopefully this will last longer.

What spur pinon combo would work best for granite 4x4 with hobbywing ezrun max10 sct e660sl 4000kV

 

[J-DiLLa]

Hot Racing makes awesome spur gears. If you get one I would highly suggest using Robinson Racing Hardened pinions other wise the Hot Racing spur will eat them up.

Dang! Little man ,let's not set dude up for failure! "HR is junk" ! The teeth on there spur's are dang near square??

 

[vader]

It looks like you have filled in the space on your adjustable motor mount, what did you use and have you found it beneficial? I use locktite on my motor mount screws but still have issues with the motor moving.

 

[Jumperj]

Dang! Little man ,let's not set dude up for failure! "HR is junk" ! The teeth on there spur's are dang near square??

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What spur pinon combo would work best for granite 4x4 with hobbywing ezrun max10 sct e660sl 4000kV??

 

[vader]

What spur pinon combo would work best for granite 4x4 with hobbywing ezrun max10 sct e660sl 4000kV??

The 4000kv motor has higher rev but less torque so you should probably go 13t ,14t or 15t max pinion with the standard 57t spur , beware off when off road that your motor may get hot , the 3200kv is better suited to the Granite

 

[slick2500]

Dang! Little man ,let's not set dude up for failure! "HR is junk" ! The teeth on there spur's are dang near square??

View attachment 131634

View attachment 131635

That looks normal to me 32p gears are supposed to look like that.

32p Robinson Racing pinion for reference.

 

[zbeckwith00]

If you are running the stock motor, stay with the 14t/91t stock gearing. The motor barely has power to turn that gear, any higher, and it will just overheat quicker. If you are planning a brushless upgrade -

Pinion - the stock motor mount is a 'noob mount' - with paired holes for specific pinions. Makes getting the correct gear mesh easy (no adjustment) but limits your pinion choices (no adjustment). From the factory, your only choices are a 14t, 17t, or 27t. Several of us have simply cut between two of the holes (made a channel) so that we can mount any size pinion you want. Easy to do, but be sure and use a washer under the motor mount screw after you cut the mount.

Spur - If you want to stay with a Arrma drop in replacement, right now your only option is the stock 91t spur. In another month or so Arrma should be (hopefully) stocking the newer BLX4s spurs - M0.8/32p, 57t. (The stock 91t 48p is about equal to a 60t 32p). It will need the whole HD slipper to go with it.

If you like to mod, several of us have fitted 32p spur gears from the Axial Yeti. They are 32p, and available in several sized from 56t up to about 64t? Also metal gear options. A bit of custom work is required, but nothing hard. Here is a video I made on the conversion. Note - for the spur spacer, in this video, I used a strip of soda can as a spiral wound spacer, that did not last, I swapped to a spacer made from .018" SS plate(I think that is 24gauge?). Hopefully this will last longer.

You seem like you are very knowledgeable, Do you think you could help me with a pinion for my granite v3 brushless conversion?