Attached the Graupner Speed 400 specs. Pic 1 is the brushed
version nominal 7.2V, pic 2 the brushless
Don't think the brushless
400 is any good for your Hornet, not enough shove? Ca 14400rpm OFF LOAD with a 3S LiPo.
version might be though. it should run OK up to MAX 9.6V.
Try 'em and compare.
The 62mm in the TP2408 seems to include the shaft length!
It might well drive your Hornet but maybe not record breaking😉
The other, blue one, might! But who knows as it's anonymous 😲
On closer inspection I suspect the blue one is an inrunner!?
Cheers, Doug 😎
PS: Specs for your Simprop ESC
"5 bis 10V. Strom: 12A (25Amax). 5-8 NiCd / NiMH. BEC: 5V/1A.Gold-2mm Buchsen. Maße: 27x11, 5x8, 5mm. Gewicht: 5g. "
I.e. 5 to 10V, Current 12A (25A MAX). So OK for your Taycols on a 6 to 9.6V NiMh👍 Not sure if it does backuds though, probably not!