Arrma Typhon Grom BRUSHLESS install and testing! 

Thanks! It was fun to figure out

Thanks! I love my other setups too but when I saw HW was coming out with a 2848 series I knew where it had to go! And it for sure doesn't disappoint

Diffs are a must! But once that is done things are pretty solid. With abuse or bigger tires I would recommend axles as well. Need to test the Typhon some more to make my mind which I like better

If you kept it 18T, you can use the stock mount. I didn't, so I use a different mount. There is one 2838 size motor with a 2.3mm shaft, that would allow you to reuse the stock pinion gear. All others are 3.175mm shaft so you'll need a new gear as I talked about in the vid.

Thanks! It's not mounted with velcro, it has double sided tape on the bottom. However it isn't a good surface for it to bite onto, so it can move slightly. I am going to maybe use some on the sides as well to firmly locate it onto the chassis so it cannot jiggle at all. Moving around a little won't effect normal operation, only will effect the gyro as it will try to correct for any tiny movements.

Yeah this setup is really meant for 2S, 3S is just for speedruns because it is too much. I would get a nice 2838 or 2845 size motor, 3500-4000kv. Should get you 40-45mph on the stock pinion on 3S. Still recommend the 10BL60 over the 16BL30. Definitely don't try the no-name ESC combos from Amazon. They are all junk.

@@Killer_of_RCs Thanks man, that’s great info. I’m not lookin for crazy foam tire speed runs, just more speed and fun….and some back flips😜😝🤪

Thanks! 1) The ESC mounting 'feet' are from the Hot Racing kit hot-racing.com/?partnumber=GRM2401;c=1909 2a) It is the Arrma mount set www.arrma-rc.com/en/product/motor-mount-set-8pcs/ARA320744.html 2b) Pinions are various tooth counts from LC Racing, I bought several from www.hobby-addicts.com/products/lc-racing-l6032-motor-pinion-gear-set-17t-18t-19t-for-3-175mm-shaft?_pos=1&_sid=d8fc1550b&_ss=r 3) Motor screws I have a large spares box I keep. I think the new motor needs M3 screws, if you don't have any handy you can get a starter kit of spare screws from Amazon (or Jenny's for the larger scale RC's)

Thank you VERY much for what you’re doing for our RC community and for such a fast reply! Very helpful! Another question… do you know what motor temps you were getting on 2s?

@@ringo101079 yeah I don't get the gatekeeping some do, it makes no sense. I haven't used my temp gun so I don't have an exact to number give you but it doesn't get warm/hot unless I'm pushing it on 3s. Even then it's still within the limits. Off road may run a little warmer, I will be doing some more videos soon hopefully

Thank you!! What length M3’s did you use??

@@ringo101079 either 8mm or 10mm, best to check depth in the motor to make sure they don't go too deep

A short chance! It is marginally faster than the Granite Grom that I am very familiar with. Indoors, very small spaces, or kids, it would be great. But personally, anything less than 30mph is too slow for me. I've overshot that by quite a bit but can easily be dialed back with timing, throttle limit, or a gear change.

Motor and ESC I ordered direct from Hobbywing www.hobbywingdirect.com/products/xerun-2848-motor?variant=41360976445555 www.hobbywingdirect.com/products/quicrun-10-sensored Radio and receiver are Radiolink RC6GS V3 and RF6G, from Amazon.

@@Killer_of_RCs thanks much 👍

@@Killer_of_RCsah, you got the 4600k? Which esc? I think I might go your route.

@@AnthonyBencomo yes, 4600kv. 10BL60 ESC

I have seen a few fit (or working on fitting) the Castle Micro X2 into these. That can also do 4S! I can't even get full throttle on 3S with this setup though so maybe with a tamer motor. With a few upgrades these are really great.

@@Killer_of_RCs Man, I am so out of the loop in rc, I thought the Tekin mini rage was the top dawg. I have 3 of thes esc, apparently they are rare, I had a few castle setups in mini t pros back in 2004. Castle makes great stuff.

This is the new XERun 4600kv sensored motor. With the adjusted timing it behaves more like a ~5600kv motor up top. A normal unsensored 4600kv motor with the same pinion would probably be around ~43mph on 2S

A lot of them are 2mm shaft, but there are some 2.3 and there is one 2838 that has a 2.3mm shaft. If anything I would go with that 2838 over anything 24 mm. You have smaller bearings, smaller rotor, and smaller surface area to try and dissipate all of the extra heat. And you can't use the factory heatsink on it. If anything the larger shaft would be safer - you don't have to gear it crazy like me 🤣

@@Killer_of_RCs I use Surpass and 2430/2435 are 2mm shafts and 2440/2445 are 2.3mm shafts. Both sizes are 24mm in diameter. 3.17mm shaft are usually go with 1/12 or 1/10 scale motors such as 2838/2845 or brushed 540/550 can analog 3650. Once before I did what you did with a 1/18 Duratrax Vendetta. Like 10 years ago. Swapped brushed 380 2.3mm shaft for 2838 3200KV 3.17mm shaft. I can show you that 13T alu pinion. That was a full-scale Greek tragedy. And yes, the motor will work just fine and it's safer for the motor. But pinion/spur gonna suffer for your insolence. Diffs will wave you goodbye after 2-3-4 packs.

@@Killer_of_RCs but everything aside that is one great brushless conversion. it really is. you did great Tetris work filling all the spaces with receiver and esc. I just hate when losi/arrma go with receiver+esc combos in their 1/18 brushed models. I know they need to cut costs and save space but they can always release "Roller only" and widen 2nd upper deck shock poles connector bar. And that receiver+esc+brushed380motor will collect dust cos reasons. 60mph is a super great outstanding result for a 1/16 buggy.

For sure, I don't even know why they make aluminum pinions. This one was light colored but it is steel, I've had quite a few different combos on the different Groms without an issue. Diffs are a weak point, the Typhon got the upgraded diffs before I even ran a pack through it. It's a must have.

@@Killer_of_RCs Ha! Back in the day, we used plastic pinions for a 1/18 scale. For brushed 370 motors. For indoor carpet brushed racing they lasted just as long as any alu pinions. Brushed 370 are in 3600-3800KV range and they were ok for indoor tracks. Also, 3S 11.1V lipo cooked them to a crisp in 10-15min. Also back in the day, we used to have all plastic diffs as well. Well for 1/18 and 1/16 scale and maybe some professional 1/10 (cos plastic vibrates less). Today with a 6000KV brushless "Steel All Around" is a must. That 60mph sure comes with a price tag. Though 1/10 professionals ran brushed 540/550 cans as long as they possibly could, even with brushless being cheaply available. Funny interesting how things changed in 10 years.

Should, but that is a pretty high kv motor. I know some people have used them in the regular granite. Not sure how stout the combo ESC is in that

Yea its only 20 watts continuous 40 peak

@@davidpunches237 yeah I don't think that will cut it then. Maybe if they offer something closer to 3500kv. I think the brushed ESC is 25a

Motor and ESC I ordered direct from Hobbywing www.hobbywingdirect.com/products/xerun-2848-motor?variant=41360976445555 www.hobbywingdirect.com/products/quicrun-10-sensored Radio and receiver are Radiolink RC6GS V3, I got from Amazon. They come in different configs

@@Killer_of_RCs thank you in your video what gyro did you have.

​@@benwilson2420 it's an RF6G radiolink receiver, has it built in. You can also get a standalone one that goes between the servo and receiver but that is more wiring and space needed

2S www.amazon.com/gp/product/B0C65BZH2W

3S www.amazon.com/gp/product/B0C7Z1XGN9

I haven't found the HRB in 3S and Graphene, but I have heard that these work really well and are made by the same company www.amazon.com/Graphene-Parkzone-Airplane-Quadcopter-Helicopter/dp/B08QDFGKRW

Not needed but definitely helps, especially with the small scale stuff like the Grom. I'm really close to 70, will be posting another video when I crack it!

@@Killer_of_RCs I am fairly new to rc, and the grom is my first small car. I didn't see or hear you say where the gyro is and what kind you used? is it seperate from the rest or part of the esc? I like the gyro on speed runs.

@@MrGonzoify so normally the gyro is built into your receiver, but you can get them separately. However with the space constraints, it makes sense to get it all in one unit. An example would be a Spektrum sr6100a paired with a dx3/dx5c/dx6c radio. Or in my Typhon I am using a radiolink rf6g paired with the RC6GS radio.

@@Killer_of_RCs Thanks for taking the time to answer. I did some research on the web, and ended up ordering a radiolink combo with the built in gyro. I also picked up a brushless set up that should fit in the space. Thanks again for all the help, cheers.

That is the Arrma mount set. I forget which letter mount it was but they don't come individually anyway they come as the set for like $10. Since this is 21T it was the 21/59 mount I used.

@@Killer_of_RCs thx

Motor and ESC I ordered direct from Hobbywing www.hobbywingdirect.com/products/xerun-2848-motor?variant=41360976445555 www.hobbywingdirect.com/products/quicrun-10-sensored Radio and receiver are Radiolink RC6GS V3, I got from Amazon. They come in different configs

Yes, 3S is just for speed runs and bragging rights. It will be on 2S most of the time. Or 3S with a throttle limit

How much does it cost in dollars? I'm asking because it doesn't seem to be available to order in Europe yet. However, the drive looks very stable. Kind regards

Which part? The car itself is $139.99, they are taking pre-orders now and supposed to start shipping next week. Motor was ~$60 and ESC was $38. You will want to get the upgraded diffs are well, they are usually $40 for the pair.

Out of the box the only thing it needs to make it reliable would be the diffs. Hardly $300. I don't know any RC that you can literally triple the power and not expect to break things. Once you want to go that fast, of course you need more upgrades to keep it reliable, and that is going to cost money. Show me on the doll where HH hurt you

@@Killer_of_RCs yeah right a crappy brushed system suitable for a 12 year old kid. You may be on that level. I am not. My Grom has sat on the shelf for months because HH hobby has everything on backorder. How about HH putting out a truck that already has all the upgrades. Oh wait Then you wouldn't be able to continue to line there pockets with money. HH hobby sucks . There costumer service is horrible and there website is horrible as well. Diffs on the Grom junk driveshafts junk shocks junk tires junk Bell crank junk. Brushed system junk. Do the math after all those upgrade replacements around 300$ .

As you write that, diffs are in stock now (again) and I've had no problem getting 4 sets. Just have to pay attention. They obviously either underestimated demand or overestimated the stock diff strength. Maybe they'll learn from it or maybe they won't. Either way I'll be enjoying my Groms and other Arrmas.

How about the shocks and the upgraded axles ? Stick up for HH all you want. They suck to me.

​@@Killer_of_RCswell said.