Grom Grom Top speed info thread

[adamwins]

Looks great- can’t wait to see it

I’ve been having a bit of fun with mine. Trying to get it to go 50mph+ has been my personal goal. No idea what top speed anyone else has reached except for the member here who has the YouTube video and reached 42 mph which I thought was pretty cool. I’ve yet to hit 50mph. My top speed is 49.7 mph and 49 again today before I smashed into a curb and broke both towers, suspension and deformed a battery, etc. I bought a new chassis new differentials and will be rebuilding this week with some minor mods. This is/was the current setup

Castle 1007-6350 sensored motor w/
10 amp BEC
Mamba micro x2 esc
18t pinion
Toyo tires
4200mAh 120c (3s battery)
Metal suspension and steering
spektrum SLR300 receiver & SLT3 transmitter

What I’ve tried and tossed:
Motors:

Quicrun 2435-4500kv
Hobby park 2435-4800kv
Castle 0808-4100kv
Castle 2852-3100kv
Castle 1010-5600kv

View attachment 352596

View attachment 352597

View attachment 352598Finally

 

[TN-RC]

What do you plan on making them out of? Pinion selections on mod 0.5 ain’t too bad. With the drill press it only takes me a minute to drill one out.

PETG CF.

 

[fredw90]

PETG CF.

I don’t think those will hold up if you plan on printing them. The teeth will wear quickly or the driveshaft hole will round out.

 

[TN-RC]

I don’t think those will hold up if you plan on printing them. The teeth will wear quickly or the driveshaft hole will round out.

I have had good luck with 32p 3d printed gears.

 

[adamwins]

anyone take their grom out recently?

 

[K-BASH]

 

[Wvrodders]

I have been thinking about making this tread for months and thought it was about time.
The speed into for the Grom is all over the place on the forum and I thought it would be good to make a central location for drivers to show their builds and for people to ask questions about the Grom only related to on road builds.
I personally do not have a build at the moment, but I do hope to have one by the end of the year.
The following treads have been made by others talking about the truck and there builds (on and off road):
- New release Arrma Granite Grom, mini basher @lrussi750
- My Grom Build @Xjeepguy
- Ok here’s my quick Grom build @fredw90
- Blx185 and a 540 motor in the little Grom @StephenSchandelmayer
- My Granite Grom Builds @upgrayedd85
- XXL Grom Speedrunner @Goldendrakester
- 3s / 4s Typhon Grom 70mph beast. @Hellamass
- Grom rebuild near complete @adamwins
- Got a new toy @Badmofreaker (Fastest Grom as of 4/12/2024)

Upgrade parts:
- Custom Grom Steering Bar // Street Truck Configuration @Tex Koder
- Custom Grom Motor Fan Mounts @Tex Koder

If there are threads I missed, please post them and I will add them to the lists.
I encourage anyone, especially the ones I pinged to post up info about their builds and any advice to others just starting their builds or thinking about starting one.
2024 is going to be another fast year for the hobby,
TN-RC

Thanks for letting join ! I have been into rc over 40 years . I finally convinced myself to STOP building all the 5th scale and stuff that I have nowhere to run, and start building smaller hotrod. The Typhon Groms immediately caught my attention. This looks to be a great platform to build on. I will be posting pics on me speed build as it progresses. I already really like this forum.

 

[fredw90]

Thanks for letting join ! I have been into rc over 40 years . I finally convinced myself to STOP building all the 5th scale and stuff that I have nowhere to run, and start building smaller hotrod. The Typhon Groms immediately caught my attention. This looks to be a great platform to build on. I will be posting pics on me speed build as it progresses. I already really like this forum.

Working on small stuff is easy! Fun too!

 

[fish]

Oh Man!
I think I want one of these.
This video isn't new. Whats the current record?