I have a question about how to visualize rear roll center on a CRC CK25. A diagram would be great.

my friend always told me to add an external capacitor other than the hobbywing xr10pro hd built-in, is that really a need or improvement to run modified 3.5T?

No external cap needed for mod. I would recommend running a fan on the speedo though.

thanks, any idea of min bec "A" to run modified, i remembered someone said 3A continuous current would be more than enough. but talking about modified, it draws so much instant current.
and per gemini, it suggests to set it to 6v instead of 7.4v to have a stable voltage if running high voltage servo such as sanwa pgs-hr or hx running ssr mode

It's not critical, but the external capacitor can help reduce temperatures, at least it does in my experience, but usually not enough to be safe without a fan. If you need to pick just a capacitor or just a fan, take the fan. They make 20mm fans.

thanks!

donny lia's car from redrc's ifmar us world 23; the fan at the bottom left looked decent, anyone knows what it is please! 20mm wtf?

Is a 20mm Roche/radtec fan

How do you guys go about shipping batteries?

https://dumpersspeedshop.com/freeze-...ooling-fan-6v/

If you mean buying batteries, then I wouldn't recommend shipping packs in the summer. Your new packs will likely be overheated and will show up puffed.

If you are looking to ship a battery for an event, if you can't pack them for your flight then I would consider buying a pack at the event and shipping it back when you are done, that way you have a fresh battery and avoid puffing or ruining your pack and needing to buy one anyway.

That may not be what you wanted to hear, but one the worst things you can do to a LiPo is ship it.

Has anyone run the MonTech M22 and been able to compare it to the Super Rad SR-07X under similar track conditions? I'm curious how it'll affect steering and rear end grip.

What dia is everyone cutting wheel openings? Are you guys using a generic dia (example 44mm) or something like 5mm over dia?

I used a few sets of full size set of tires not yet trued down to a running diameter. Put a set on the car, set the car on a flat surface then use another set on the outside to mark the body.

cry baby racing also has a template but I haven’t tried it yet.

I use the olfa for touring car but 12th bodies are
1/ super thin
2/ hard to find the center

I'd recommend a 3d printed tool to trace a circle and then curved scissors

https://www.sidepieceracing.com/BS-WC-220