I like THIS!!!

Thanks guys!  Yeah really enjoy flying this rig.

This is the thing about 1S for me.  With a proper performing and well matched (motors/weight/frame/tronics...) quad you can be quite acrobatic with it.  Given that it is 1S it will never really have a crazy "stop on a dime" power but you do still experience the push/limit dynamics of flying.  It is still satisfying to experience the full slew of throttle change, pushing it more, holding corners, etc - The full dynamics of flying can be experienced and feel great to pilot WITHOUT the crazy power.  This allows be to push the acrobatics whilst staying within the confines of my property.  They are really quiet too as I don't wish to disturb my neighbors.

This is something I still need to learn how to build for.

Those are aspects of flight that I can only manage to get with 2s or 3s overpowered builds,

It’d probably help if I stopped building so damn heavy.

Yeah man, funnily enough I learnt a bit about ultralight dynamics when building that stupid hotdog quad for iFlys endurance challenge.  Also, the BL_Heli_32 esc can't be underestimated for the power it delivers to the motors.  At 1S there is way less tolerance for any type of loss (be it electrical or mechanical) so small performance gains can result in large differences in the flight feel.

Quote: Looks like you got rid of most of the shakes too!

Actually went back to the 65mm props.  Now that I have a better tune through the uav futures preset I will try the 3" props again.

Very NICE     

Nice rip!

The quad seems really well tuned. I once tried one of his presets on the meteor 75 but I didn't like it too much, of course I didn't tweak anything further bc I just didn't want to delve into that atm, so I never tried one again.
After seeing this I might give it a go for my Toothpick build and see what gives..

So this 1S pick comes in at 52 grams with the 65mm gemfan biblades.  With 3" props the frame and motors have a hard time keeping things stable.  I believe the frame is too thin and a relatively simple design that doesn't deal with the lateral flex (under motor thrust) very well.  I can twist the arms easily.   I feel this is part of the problem when flying with 3" props, just too much frame wobble.

So I thought I would use the bottom plate from the betafpv HX115 frame, with a bit of chopping and turn it into a traditional top canopy toothpick.


Notice the motor mounting patterns?  I'm going to use some 1102 motors with the three hole mount pattern.  Will run the same 65mm props as the heavier build.

I reakon I can get this under 40g.  Here it is with the motors preloaded on the (crappy) scales.   Just missing props and motor screws.



40 gram, 1080p/gyroflow capable, digital toothpick   just crazy.....

Easy to see how much you enjoy this hobby by what you put into your creations and bring everybody along with your experience. That's way over and above my few simple builds and modifications, but I still get at least half the fun of this hobby putting my creations together. Learn from the last one & tweak the next one . . . or go in a completely different direction.

I'll keep my 1S for the little guys for now, but do have two 2S light weight ish Whoop projects I'm going to try, and see how they can compete with their big S cousins . . . 

This should be interesting to see what you finally end up with.

Hi Ph2t,

I have seen a variety of combo hole configurations for mounting both 3-hole
and 4-hole motors, but not sure I have seen your pattern. I like it. I think it
will be what I use when I want a frame to be able to use either pattern.

Thanks. 

Later, iFly 


Lemony,

What do you think?  I could use this hybrid mount pattern when I cut the
arms for you aluminum frame.

Later, iFly 

Thank you Brian!   Yes I have a thing for 1S builds, just trying to get the max performance i can 

iFly, yeah I haven't come across this pattern before, in this case it allows me to run a smaller motor to keep the weight down.

Changes to get it to 39 grams.

FC went from a beefy tmotor 13A aio to a jhemcu 5A aio, cross style.
Motors went from 1103 to 1102
VTX went from first gen 1S pcb to 2nd gen 1S pcb
Camera went from nano cam to lite cam


Can't wait to give this thing a rip.   Motors are running at 18000kV so I've set them to SCALE at 80% to reduce the chances of burning up the escs.

Just like the heavier 52g toothpick posted earlier in this thread, this rip is running Bluejay BETA 0.20 with the variable PWM!  How sweet is that!


The walksnail 1s vtx is such a handy vtx, you can mix/match cameras and mipi cables lengths and get a setup just right.  I personally like the nano camera with the 2nd gen pcb, that's the best config so far.  Pretty sure you can run V2 cameras on it as well.

So the 1SVTX fleet grows...

(15-Apr-2023, 03:44 PM)ph2t Wrote: Yes I have a thing for 1S builds, just trying to get the max performance i can 

Don't know if you've ever checked it out, Quad66, does a lot of work reviewing motors, setups, bunches of 
stuff, guy gives a ton back to this hobby, has/had a thread going over on rcg, Maximizing 1S Performance. That's the start page & there's probably a dozen or more, so a ton of discussion. It's been kinda quiet over there lately and that thread hasn't had much action for a bit, but might be interesting to you with your creating 1S quads. I know a couple of the guys into their 1S brushless Whoops & Picks were on it a lot, and stuff from that would pop up on some of the Whoop threads. My only 1S are my couple brushless 65s, a couple 75s & my brushed Whoops, but that thread was more for like what you're building.

So revisiting this after the latest batch of aliexpress orders arrived 

The 39g rig I posted above wasn't a great performer.  As 1103 motors are to 3" props, so are 1102 motors to 65mm props - overpropped with a micro sized (if any) tuning window.   I guess you could get away with 3" props with lighter analog builds and similar sized motors but the weight of digital is an extra penalty.

The 65mm build running the t-motor aio performs best on 65mm.  I just couldn't tune out the wobbles with 3" props.  Having said that it performs really well on 65mm props and I'm happy with it.

Another reason the 39g rig was a stuffup was that I had accidentally cut through one of the arms a bit, this led to vibrations above 2/3 throttle.  Just crap.

So I'm going to keep the 50g build as it and enjoy the hell our of that and task myself with building another 1S beast that hopefully can handle the 3" props.

Things I've got going on in the pic below.

• Thicker monobody frame, 12g
  
• Assortment of motors: 1104, 1103 (2nd gen mambas), 1202.5
  
• xt30 for power this time, keep hearing it's the dogs bollocks for 1S.
  

The main focus is the motors, here is the reasoning I took when selecting them.

• 1104 8600kV TSIDO motor - off brand from aliexpress, the taller stator is what I'm hoping will help.  Yes it's lower kV than I'm currently running on 1103 but I'm hoping the extra torque will provide a net difference that accounts for the reduced kV.   I always felt the 1103s running 3" props on the 50g build were very slow to accelerate.
  
• 1103 10,000kV MAMBA TOKA motor - 2nd gen on from the original 1103s I'm running on the 50g build.  Super notchy which I believe will provide increased torque to handle 3" props better.
  
• 1202.5 11,500kV HappyModel motor - wider stator, not sure how it will behave just yet.  I've done 1202.5 on an anolog 3" toothpick build and found them slower that the 1103s.  Will see what happens here.   I'm not really confident these will have any performance increase on 3" but I want to try.
  

Which motor should I try first? I'm keen on the 1104, mainly because it is an unpopular size and I just wonder if the taller stator will work out. Keep in mind that flying on 3" the low throttle efficiency is crazy, I hover at approx 15%-20%!

Hi Ph2t,

I have used both 1103 and 1202 motors (between 5000KV and 8000KV) on 
2, 2.5, and 3 inch builds and they both work fine for me, but then, I am an 
easy cruiser rather than a stunt pilot.

It would be interesting to see how the 1104 motors compare.

iFly 

Try the off brand 1104 first. I’m always interested in how well off brand motors work, and as you said, the taller stator should allow it to spin up 3” props faster.