Need a quick answer, please! Motor shaft..

[WhiskeyBent]

I'm installing the motor adapter for the 13/14T pinions on my Scorpion motor, and I'm having trouble fully understanding the PDF. Exactly how long do I want my motor shaft to be?? 9.5mm? Thanks!

[Mr dan]

what motor are you using? is it the old series hk3026 or the new HK3226
I had both , the first was the 3026-800, that shaft was shorter than the new model, (800 kv) was 23mm from top of motor to top of shaft, I used the 15t pinion the new model (900KV) is 25.20mm top of motor to to of shaft.

[WhiskeyBent]

Originally Posted by Mr dan

what motor are you using? is it the old series hk3026 or the new HK3226
I had both , the first was the 3026-800, that shaft was shorter than the new model, (800 kv) was 23mm from top of motor to top of shaft, I used the 15t pinion the new model (900KV) is 25.20mm top of motor to to of shaft.

It's the 3026-880KV. I cut the shaft down to about 13mm from top of motor, but it still seems too long.

[Mr dan]

Have you installed your pinion shaft adaptor ? The 13 & 14t pinion uses a 4 mm shaft adaptor, you an cut down the motor shaft so the adaptor can fit over it, best way I can think is to measure the depth of the adaptor that slides over the motor shaft, you can do so by simply placing it over the motor shaft untill it bottoms out, mark the bottom of the motor shaft and then remove the adaptor and measure from your mark to the top of the shaft, that number will be the amount you want to have from the top of the motor to the top end of the shaft after you cut it down. I cant tell you the exact number because I dont use the smaller pinions.

[WhiskeyBent]

Originally Posted by Mr dan

Have you installed your pinion shaft adaptor ? The 13 & 14t pinion uses a 4 mm shaft adaptor, you an cut down the motor shaft so the adaptor can fit over it, best way I can think is to measure the depth of the adaptor that slides over the motor shaft, you can do so by simply placing it over the motor shaft untill it bottoms out, mark the bottom of the motor shaft and then remove the adaptor and measure from your mark to the top of the shaft, that number will be the amount you want to have from the top of the motor to the top end of the shaft after you cut it down. I cant tell you the exact number because I dont use the smaller pinions.

Thanks, this is exactly what I did. I couldn't find any information on an exact number but it turned out to be around 5mm.

[Mr dan]

may I ask why you are going with a 14t pinion with the 880kv motor?

[WhiskeyBent]

Originally Posted by Mr dan

may I ask why you are going with a 14t pinion with the 880kv motor?

Because this is my first heli and I don't want any real crazy headspeeds. I can barely hover lol.

[Mr dan]

Hey there is no shame in being careful. Have you checked out radd's school of rotary flight? thats a great way to learn to hover and progress into all orientaions.

[WhiskeyBent]

I'll have to check that out. I've mainly just been practicing on Phoenix. I haven't gotten TOO serious in nailing all the basics because I'm so far from finishing my Protos build, but I have learned so much using it over the past month. I can hover for 5 minutes in about a 5ft circle and do some figure 8's..granted they're with a bit of altitude fluctuation, I can do them. I've mainly just been playing though.

[banditpowdercoat]

When I was learning I thought that too, lower HS for beginner. But, what is acctually better is have a good HS, and limit your Pitch and collective via the TX.
Reason behind that is, the higher HS makes the Disk have more Gyroscopic force. It doesnt want to bobble as easily. But, Higher HS with 12* pitch is very tough on a beginner. If it is a Flybar heli, the higher HS helps even more as the FB wants to hold its position better. Lower the pitch and Cyclic settings in your TX Pitch Curve and D/R for cyclic.
2300-2600HS is good on Protos for beginner with low pitch settings