8S Motor!

[beeflyer2]

Ok guys, the 8S threads have kinda died off, so I'm starting a new one.

Is ANYONE running 8S on the T-Rex 500 with a motor other than the Scorpion HK3026-1210? I have scoured the earth and these can not be found right now. The EDA at Innov8tive keeps getting pushed back as well and I am tired of waiting. So unless you have a 1210 you are willing to sell, please don't recommend that one.

Here is a list of possible candidates:

Medusa MR-036-050-1000V2-5
http://www.medusaproducts.com/motors/036-V2.htm

Neu 1907/1.5Y/H
http://www.readyheli.com/Neu_Motor_1907_1_5Y_H_p/1907-fslash-1.5y-fslash-h.htm

Hacker A40 10L
http://www.espritmodel.com/index.asp?PageAction=VIEWPROD&ProdID=6470

The Medusa should fit with no mods, the other two will probably require some trimming. Any feedback on which might be the best motor on 8S for the 500? I am looking for efficiency and power. I want 5 mins 3D on 8S 2100 packs. Is this too much to ask?

So far I have tried the Scorpion S3026-8 (1212kv) and the Scorpion HK3026-1400. The power is great with these, but neither gets me over 4 mins and my packs are getting too hot. PLEASE HELP!

[rcmarty]

I was thinking of the 1907/1Y/H myself (1.5 is too low a kv).
I fitted my 1910 in there easily bu flushing up the frames to the motor mount and putting motor up thru the frame with the bottom plate off. Sending in the 1910/1y for an update , when it gets back i might try it out as the 1910/1.5 i have is too low hv to work (unless on 12s !!)

MArtin :)

[LifeIsGood]

Hi Martin,
Now I am flying my Logo 10 using 19101Y with 6S and 1.5 y for 8S but I am going to move up to 8S and 10S respectively for my Logo 10s. I have another brend new 1910/1.5Y laying around. Don't you think 1910/1.5 is too much for the 500 ? Since 1910/1.5 Y with 10S already produce more then enough power for 500mm blades.

[rcmarty]

A few guys put the 600l in there 500. It ran good and was unboggable.

I have the 1910's on hand and tried to re-use them for a more powerfull setup over stock.

I found getting the hs on 1910/1.5 to be the problem. I calculated the teeth per min of the stock system and tried to get in the same range. Kinda like kv but from another angle.

Steve neu was the one who reccoemended the 1910/1y n the trex600 on 8s. I questioned it at first myself as a fully charged pack is over the voltage rating of the motor and 1500w rating is far from what will make a t600 go anywhere. Steve told me that it was his idea and there's alot of leway on the specs. It as been awesome in the t600. I'd think the lighter logo with a 1910/1y 8s setup would be something hot to say the least.

I'd think the 1910 series is too much for the t500. I had them on hand and if they would make for a powerfull setup then i'd use them up. Just looking pretty on the bench anyways.

I'd like to use the 1.5 in the 500 id possible (not being used) on 8s , but i don't see how i can get the hs in the range needed for the 500 to go good.

If you figure a way , please let me know. I know from my math i did , it doesn;t look like it will spin the head fast enough.

Martin :

[LoveMyTrex]

you are forgetting this: http://www.innov8tivedesigns.com/product_info.php?cPath=21_25_65&products_id=311

[LifeIsGood]

I like to hear the report back from you useing 1910/1.5Y with 500. Like I said, 1910/1.5Y with L10-500mm blandes stepdown to 8S already provide plenty. 1910/1.5Y with 10-12S are for hardcore L10 flying. I got around 5 minutes with 8S, gentle 3Ds with 2 packs of TP3850 Extreme. With 10S - 2 packs of TP3300 - bit heavy for no more then 4 minutes air time with incredicable power. Rex-500 with 10S and 1910/1.5Y you can use only two packs of TP2200-5SXV which weighted close to 570G plus 1910/1.5Y is a lot heavyer then the 500L with no more then 3 minutes flyiing time. I think flying time may increase bit with 425mm blades but I think the ready to fly weight is going to be way high. My opinion.

[LifeIsGood]

1910/1.5Y with TP2200 -8S may work real well with 425/430mm blades, but I am still worry about the all up weight. Actually, I think 1910/1Y with 2200-8S may work better then the 1910/1.5Y. Again, let me know the result if you ever tried.

[beeflyer2]

you are forgetting this: http://www.innov8tivedesigns.com/product_info.php?cPath=21_25_65&products_id=311

Guess you didn't read the whole post. :roll:

[raptorheli2]

i flew a medusa 38-50-1300 on 8s at the weekend using a 13t pinion on gov mod on CC45HV. it was ballistic but flightime was less than 3.5 mins. i nearly killed my pack putting 1989mahs back into a 2100mah pack...whoops. i will try a 12t pinion on it this weekend and see how that goes but i really do wonder what the people getting 5-6 mins from 8s are flying like. i hammered it and took nearly 2000mah's in less than 4 mins, admitedly the pinion is wrong but even going to a 12t pinion won't get me 2 mins plus more.

medusa has v2 motors coming that i will be keeping a close eye on.

cheers

[beeflyer2]

i really do wonder what the people getting 5-6 mins from 8s are flying like.

Well, I will report on that Friday hopefully. I got a Scorpion HK3026-1210 (used) finally! I hope that it really is as efficient as it seems to be from the reports so far.

It's strange how these other motors are so amp hungry on 8S. I thought higher voltage always equals lower current?

[EKIM]

I'm staying away from medusa motors just for that reason. They put out a ton of power at the expense of flight time. I flew the hacker a40 10L on 8s 2500 packs, power was crazy but I put 2000mah back in after 4 minutes of 3d. I'm going to try a smaller pinion too so I can try and get some more time..at least until the 1210 motors are back in stock

[raptorheli2]

i'm not intending to get the scorpion motor now. the numbers just do not make sense to me so i'll avoid it until i get more info (logs and vids). i will try the v2 medusa soon probably. btw i should say this is a stop gap. i'm going to 10s 2100 cells.

cheers

[LoveMyTrex]

sorry, did not read thoroughly. :arggg:

[beeflyer2]

I just tried the HK-3026-1210 for the first time and my packs are still 130F! And it looks like I can't get any more than 4 mins still. This was on 13T, pretty agressive flying. Power is awesome, but I'm still pulling a lot more amps than the other guys who've reported on the 1210. This is really frustrating!

[EKIM]

I think no matter what 8s motor that is available right now, the packs simply can't put out enough amps to keep up. The only solution to this is a higher c rating on the packs for now. I'm running 2500 evolites getting 4 minutes but my packs are 130* at the hottest point (the middle cells) I may try 2500 25c packs but then we are really starting to dump on the weight.

[aaron07]

I am flying with 8s (2 14.8V 2100 V2 Flight Power Evolites) Jazz 55 10 32 and the Scorpion HK3026-1210 / 13 tooth pinion for 5.5 mins @ 2700HS an my packs are at most 56*C.

[raptorheli2]

are you hovering it? i can't see how that is remotely possible unless you potter about. i just put a 12t on my medusa to try, hopefully today and i will get a log of it.

cheers

[aaron07]

If I was hovering I think I'd get at least 7 minutes, I land @5.5minutes and I will only put back in around 1400mAh. I get 5.5 minutes of sloppy stick banging, put back in around 1670mAh.

[raptorheli2]

ok, something is FAR wrong here, your type of "stick banging" and mine must be in a completely diff world. i got 3.5 mins out my 2100 cells and i put 1989mahs back into them. i have flown a LOT of packs as i do a lot of testing for revo. i have flown, 2100, 2200, 2500, 3200,.3300, 4200 6s packs. 3200, 3300, 4200 5s packs and i now have 2100, 2200 8s packs. you could say i have a lot of experience with packs on the 500.

cheers

[aaron07]

raptorheli2, I think you are basing YOUR experience on a MEDUSA motor. Is it the V2?
I am using the Scorpiion designed for 8S. Check out eagle tree graphs from widowmaker and jakeg1999 who also run 8S scorpion 13/14 tooth 8S 2100 evolites. Then you can see some facts. I will post some graphs by the end of the week. I'm sure you are way more experienced, but do a search for the graphs first here on Helifreak and on Run Ryder (8S best motor choice).

[raptorheli2]

yes i am basing it on the medusa, it is a v1 fyi. i will have a scorpion soon to compare it with and they can compare like for like.

thanks for info.

cheers

[aaron07]

Please let us know about the comparison :)

[raptorheli2]

please see this for the log details.

http://www.trextuning.com/blog/?p=342

cheers

[d3sbo]

Innov8tiveDesigns.com
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The comments for your order are

We wanted to let you know that the Scorpion HK-3026 motors arrived today. Your order shipped out today

Thanks again for your order!



Your order has been updated to the following status.

New status: Shipped

Please reply to this email if you have any questions.

[beeflyer2]

Yes, it appears the new Scorpions are now in stock. They also have a 1000kv version! Might there be any advantage to using this one over the 1210? Is there an ideal motor RPM for power and effeciency?

I am running the 1210 on 12T for 5 mins with 2100 8S packs. The power is not as good as 13T, but I was tired of 4 min flights. Packs are still getting to 130F however.