3mm Prop Saver w/ Adapter & 3 bands

 Viper_one3 10 points

It is made of aluminum. One side measuring 7mm in diameter and the other side is 5.5mm. And the screws are M3.

 scarborofun 56 points

Thanks. I just have to know if they fit the props, don't I? Wouldn't be so hard to put two dimensions on. Now we only need them to be on stock....

 tommy2toes 2160 points

yes this is the exact one you will need. hope it helped credit the answer if it does thanks, tommy

 mena142 746 points

It does: www.link

 Brian 36 points

You can also use garden hose gaskets from your local hardware store as replacement bands.

 tommy2toes 2160 points

they are just out of stock for that size bag.

 Aragorn 51 points

You put the prop saver with screws to the motor shaft, then put the propeller with the prop saver rings. Thus, if the propeller hits the ground, you minimize damage to the propeller and the motor shaft. Choose the right prop for your engine saver (2mm, 3mm, 3.17mm, 4mm, etc ...). Luck!

 thibfighter 11 points

Hi, you simply put the adapter on the motor's shaft, then you turn the screws so that it won't move away from the shaft. Then, you place the prop on this adapter and you "fix" it with a rubber ban (hold on the screws). Hope I helped you !

 Ltunited 8 points

These work by holding the propeller onto the motor only with the rubber band. Thus when the prop hits the ground, the rubber band allows it to seperate from the motor and rotate until it's parallel with the ground. As you may have already understood it prevents the prop from bending and breaking by allowing it to rotate. Hope this helps.

 metalguy 45 points

This one also comes with an adapter to fit APC props. I use it on my HK microStuka, and it works like a champ.

 Krille 5 points

Also, if you are having trouble fitting this on the motor shaft: I noticed that there is a bit of paint on the inside of these, making them more like 2.8-2.9mm = won't fit the motor shaft. I had to drill them out with a 3mm drill bit to make everything fit.

 tommy2toes 2160 points

put the two screws in the prop saver. then slide it on the shaft. then add your prop sitting on top. now hook the rubber ring on one screw and pull it across the prop to the other screw and hook it on that screw. thats it your done . if you have a strong fast motor somtime you can put on two rubber rings to really hold your prop better. credit the best answers thanks ,tommy

 tommy2toes 2160 points

all those good answers someone should get the 10cent credit spending time to help? please remember to credit those who help you. thanks ,tommy

 mena142 746 points

Either the hole or the screw could have some metal protuberance that don't let it screw in, give both of them and if you find any file them down taking care not to damage the threads. Try to find similar screws and try screwing those in. Take the prop saver to a hardware store and try out diferent sizes of screws :P... Also, the screw might be the diameter, but the threads might be different. Good luck!

 Rodrigo Lobato de 1 points

Put a screw thinner or open a little hole with a drill.

 SigiK 214 points

With a file chamfer the end of the screw

 OldFartFlyer 1323 points

Be very careful about this problem. Using a different screw might lead to future problems for a number of reasons.
You might accidentally cut a different thread which will not suit your supplied screws. Since the unit needs to balance on the shaft, you must use identical screws.
A common solution is to remove some material from the leading threads of the screw which will then penetrate deeper into the hole before "biting". But if you do this, you will need to do the same to the other.
Another solution is to screw in from the other end. That means from the shaft housing outwards. But this would require a grub screw and you might not be able to match the thread.
If you have a set of taps or thread cleaners, you can pass one through to clean up the thread. Alternatively, you could tap new threads to match two new screws that you have in your spares. But this solution demands that you do have an engineering tapping set.
It might be cheaper to purchase another.

 tommy2toes 2160 points

you can go buy a metric fine tread tap and die from any hardware store fairly cheap then you can re tap the hole properly simply a 10 dollar kit.then youll have it to fix or create anyhole you ever need!

 SigiK 214 points

It fits 8x4 & 9x5 GWS. Some brands have different diameter holes, which you need to drill out for a fit.

 dolino 38 points

Or buy prop with hole adapter

 SupercubDSM 9 points

Thank you. I guess the easier question would be, Does it have a 7mm adapter?

 mena142 746 points

I use them with GWS 8X4 and 9x5. The props dont have to be a perdfect fit because the point of a prop saver is them to slide off in the event of a crash.

 SigiK 214 points

It has a 7mm adapter. The O-rings are of poor quality. If you leave them on the shaft when not in use, they will break after a few days. Suggest to replace them with Silicon O-rings.

 ANDY in c.a.p 348 points

yes it will credit pleas

 mena142 746 points

Si, ese motor tiene un eje de 3mm, y este prop saver es de 3mm.

 Coombs 15 points

Yes, as the spanish gentleman above stated, the 28 30 has a 3mm shaft. So it will work just fine, Also check buddy codes, I happen to know this item is there *Wink*

 dandan 14 points

Yes, it will fit. But I had to take some fine sand paper to the shaft of my 3mm motor due to the snug fit of the prop saver. Also, I just bought some of these and the rubber bands kept snapping on me after simple s***ling up in the shop… I don’t care about saving props* I just wanted a shaft adaptor so I had to use small zip-ties to fasten my props to the screws.

 smartguy 278 points

Yes, it will fit on 28-30 !!!
If you like my information let get me rewarded Please

 Robert 26 points

yes, it will fit

 Kellyann 16240 points

Allison Hobby Kings sell the adapter you want. Here is the PRODUCT ID: 317MPRPSVR I hope this helps

 PR33M1UM 1 points

obviously. When choosing a prop saver, you need one that is the same size or LARGER than the shaft on the motor you're intending to use it on.

 Kellyann 16240 points

Joe do you think larger is a good idea. I have been ably to drill them out on a good drill press. IE: 3mm to 1/8 inch. I will say a good drill and press is very important. As you can see from other replies you can lose center if you use a hand drill.

 Hristo 10 points

if you want you can modify it just use a 3,2 milimeter scrul head to make the how biger but befor that remouv the scruls and secur it furmly anth this mod wiw destroy your worenty

 AVIADO-FLORIPA 1 points

It will work yes. but not the best! And remember to remove the O-ring after each use. The best way is you get a really Propeller Adapter like this: www.link

 OldFartFlyer 1323 points

It will suffice.

 FPVking 374 points

AVIADO-FLORIPA, but "real" prop adapter wont save your prop *)

 FREDERICO 1 points

este produto faz reduzir as perdas de hélices em acidentes.

 Olivier 15 points

Hello, It depends on the propeller, i have a TGS Sport 8x6E which is too big for this prop saver. The O-ring must be placed with a small screw driver and it doesn't resist to the motor power. Masterscrew propeller are easily to use with this prop saver.

 kapil 9 points

no, the motor has a 4mm shatf therefore look for a 4mm prop saver. the shaft on the motor is too big for the 3mm prop saver. it wont go fit.

 Ivan 6 points

No it will not work, because this motor has shaft diameter of 4mm, and if you try to drill out the hole on the prop saver you can miss center and that will give you a large amount of vibrations!

 Guilherme Fernando 13 points

Serve para motor 2822 ??

 OldFartFlyer 1323 points

Take care. Your shaft might be 1/8 inch ie 3.187 mm. You might need different size. recommend you ckeck your specs.

 Ebiker 166 points

Motor shaft fits fine, it's the saver not fitting the prop right.

 CLEOMARA 12 points

ja vi perece ser bom...

 dubles 14 points

Have you tried turning the prop saver around. The other side is a different size. I also got a little adapter plate with mine which you can put on one of the sides to fit an even larger prop.

 Ebiker 166 points

The saver and it's adapter simply don't fit the TGY Slow Fly Prop 8*3.8SF . I think it should. I had to shave about 0.4mm of the adapter so it fits in the prop.

 PR33M1UM 1 points

lol, i try not to hammer anything on my planes.

 SigiK 214 points

Better to drill out the prop to make it fit. But you have to use a drill press and make sure to centre it properly before drilling. A hand drill will not do.

 bobby73 48 points

yes you need a prop saver to fix the prop or a locknut

 OldFartFlyer 1323 points

Yes to prop saver. But you can lock your prop by fitting a locking prop washer, then your prop then your prop nut

 Chris 12 points

Prop Saver is used if your motor doesnt have a threaded shaft . It will go on 2 ways depending on the hub size of your prop . Once you know which hub the prop will fit over face it outward slide it on the shaft and tighten the screws . Next the prop goes on and then the oring hooks around 1 of the screws around the front face of the prop and around the other screw . Its a fairly hard pull but very secure once on . I actually use 5/16 surgical tube cut into rings instead of the orings .

 Charles 27 points

yes, the rubber is very strong!!

 Toh1652 10 points

Yes, Prop saver will save your prob!

 Milind 24 points

No worries! Its okay, the rubber grip is very strong!

 Bonified Wingnu 16 points

Tighten the two screws that hold the O ring, They hold the prop saver on the shaft.

 Calvin 2 points

yess this will keep your prop from spinning up.

 Martincr 5 points

Yes this will hold your props in place. Get some replacement rubbers so you have them at hand for the case tp lose them after hard landings. www.link

 Milind 24 points

Never trust the ETA or Customer Support! Even I am waiting for some items including this to get back in stock, but from past 3 months they are saying it'll be restocked in 3 weeks! LOL!

 makind 10 points

so you have this item in your paid order for 3 months?

 OldFartFlyer 1323 points

This kind of thing has happened to me, as well. The ETA indicates supply of, say, two weeks but the same message remains for many many weeks. For one item reported as ETA one month, I paid and waited six months before cancelling my order after CS informed me there was no likelihood of supply for another three months. I lost my postage.

I have written to HK Customer Services appealing for quality ETA information to enable improved customer ordering decisions. A quality customer service req

 makind 10 points

I still waiting for my plane (20days to backorder, but im waiting 40days now) as soon my plane will be restocked and shipped i will cancel this item from my order.

 christiano 78 points

7 to 30 days

 catalinapby 6 points

instead of ordering bk stock, sign up for the notification of restock. If you have a bk item it holds up the whole order.

 krekrek 19 points

Normally stocks renew every 30 days. Put it on your list and check the option to be prompted.

 makind 10 points

I added it and paied for it 2months ago. but still no sign of it

 Kellyann 16240 points

Sir they are in stock now. I hope this helps

 Adam_Max 18 points

you can gently drill the adapter

 christiano 78 points

if you drill you can lose the center, buy a 3.17mm prop saver and be happy

 OldFartFlyer 1323 points

Remember 3.17mm is 1/8 inch. 3mm is 3mm.

 Cassio 4 points

No. It fits exactly 3mm, better buy a 3.17mm prop saver.

 MikeyFlys 67 points

Removing answered question.

 Ivan 6 points

No, if you use drill to increase hole diameter you can miss little and the hole is out of center, and that can give you some hard vibrations in flight!

 floydbh 95 points

I believe that M3 will fit. but if you have a spare, you can bring the piece on the shop to measure that

 sacred 29 points

Try to buy hardened screws. Those provided with prop saver are made from soft steel.

 christiano 78 points

buy a new prop saver and be happy

 OldFartFlyer 1323 points

At the price, just buy another. If not, get any spare screws and use. Not worth buying more screws!

 Ivan 6 points

M3x14mm

 _JeaN_ 110 points

Há um par de protetores de prop 4mm, tente procurar ("pesquisa rápida" no lado esquerdo da página) de 4mm e você vai encontrá-los. (não posso postar links aqui:)

 OldFartFlyer 1323 points

All the best with the product. I'm pleased with mine.

 MikeyFlys 67 points

Removing answered question.

 aditya gupta 58 points

i think normal elastic bands work well

 AZHER 8 points

2mm screw thread with matching screw pitch, the OD of the ring is 16mm

 Beaufighter 1808 points

There are a couple propsavers for 4mm, try searching ("quick search" on left side of page) for 4mm and you'll find them. (cannot post links here:)

 Seb 29 points

Do you think they would be suitable for a Turnigy 3542 motor. I have just been advised not to use prop savers with powerful motors.
What do you think?

 Beaufighter 1808 points

I wouldn't used it for such a large motor. When your motor produce high torque, the o-ring may snap. Propsaver is good thing on small models, where you may not have landing gear, or the plane is "crash resistant", it will reduce the cost of broken props(and motors)... On larger planes a crash is often more expensive than just the prop, so I'd rather not crash:)

 martin555 31 points

good for 300 gramm foam plane, but make sure u use 2 bands.