Here is some pictures of a small project of mine.
I took the lower chassis, A arms, front wheels and the red body of a classic old Jet Hopper.
The car had problem with its electronics and could not run.
The rear axle (with very fast gear set), rear wheels, upper chassis, and electronics from a yellow Head's up jet Hopper. This other car came with a broken A arm and the yellow body was kept together just by glue.
I modified the position of the spare wheel in order to protect the power pack when the car tumbles upside down.
This is the result:
I build my own power pack with 2900 mAh cells that can last longer than the packs that are available.
And today I added an extra cell bringing the overall voltage to 10.8v


As you can see, the extra cell is on the right hand side, while the Tamiya plug is on the left.


Below a picture of the powerpack removed from the car

And a close up of the rear from where the power plug exits the chassis

Another picture of the overall assembly
Rear View

With the extra cell the car is very fast although it is very hard to control.
My next experiment would be to add an extra cell to bring the overall voltage to 12V.
Do you think that is going to fry the electronics???
Thanks for looking,
giovanni