Modified Rastar 1/18 Ferrari F1-75 

Thanks for the comment. It was fun to add performance to these neat F1 RCs. Hopefully I’ll do more in the future.

Thanks for the comment. I initially just did a power modification (2S Lipo) to stock version. Went about 9mph. Drove okay with original controller. Much better with full modification. Yeah, the servo was not pretty, but works well. I plan to modify the 1:12 version soon. Probably similar to F138. The larger one should be easier.

@@2005silver I reckon the 1:12 scale car will run well when modified due to its size. It is interesting to see the newer F1 cars next to the older version. It really shows how much they have evolved style wise.

@@BlackSeaRCI think the newer 1/12 version should handle better due to a longer and wider wheelbase. The newer 1/18 version is more stable than the 1/18 F138. The older larger F138 version is also easier to spin out. Hopefully I’ll find time to modify soon.

It’s on my to do list, along with many others. Recently got the Red Bull version so one more. 🤪 Here’s a link to the older Ferrari F138 version I did modify a while ago. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-rwkIRvo7kos.htmlsi=fsmYUegx6N4FI2a9

I did try more 3.7v batteries, but the stock electronics didn’t like the extra voltage. Wouldn’t run correctly. As far as a full modification, the electronics I usually use for smaller RCs were still too big. Plus my old eyes and fingers make it hard to work on really small things 😂

A 6g servo. Typically measures around 21x20x11mm.

I originally did that and it does work up to a 2S Lipo. Was faster (about 9mph), but a little harder to control. I tried a 3S Lipo and it burned out the stock circuit board.

@@martijnvdbent6908 Probably the easiest way to get a little more speed is to increase the power. You can buy AA sized 3.7v batteries (regular are 1.5v). Do one 3.7 with 2 regular batteries. I did this with this one before modifying. Increases acceleration but still relatively controllable. Here’s a video I made about doing this. ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-gsXLlOC2nCI.htmlsi=d4B7sAuLPd4HGP-T Don’t do more than 2 3.7v batteries as it will short out the circuit board.

@@2005silver ah great, thanks for the advice!!

I’ve not tried modifying yet. However, there’s a link in the description to a speed test video that shows the 1/12 F138 modification.

The servo, battery and better motor are from the Wltoys K989. Servo part # k989-58, motor k989-06, battery is a 400 mah. The esc is a 30amp mini brushed esc. The controller and receiver were from a Hobby Grade Rc I have. The parts can be found online such as EBay or Ali Express. The stock motor isn’t too much slower so replacing could be optional. Might also need some red JST connectors. Hope this helps.

@@2005silver thank you! Really appreciate it

is the 1:12 version has the same motor?

You could use a brushless motor, but it might stress the gearbox so be careful.

@@kebogwanteng17 The 1:12 version uses a 370 size brushed motor. A 2430 size brushless motor is comparable.

@@2005silver is there a place where i can buy a metal gear?

I like the “Tacon” brand RCs because they run great out of the box and the quality is good. The Tacon is basically a rebranded Lc Racing item. Also, when I bought the models I have (Rally car, short course truck and on road car) they were on sale at a good price. I like using the controllers and receivers for my projects. The controller has reverse channel functions and duel rates for the throttle and steering. The receiver is smaller so easier to fit. Plus the controller has good range and decent precision.