Lehner Outrunner Motors 4140 and 7050

[RaceMechaniX]

IMG_0506.jpg

A good comparison in sizes. I don't have the 4140 here, but it's close the Scorpion on the right.

From left to right: TorQstar 7050, Scorpion HK-7050, 3080, Neu 2230 and a Scorpion HK-5035

[meangenesracing]

Tyler, so the 7050 is for a future project Ha lol. Would it be a great motor for a Ambush 57" Scott Adam's builds. You willing to part with it? You should have never started this thread, lol

[RaceMechaniX]

Hey Geno,

Yeah it would be ideal for a big scale hull, but would likely need 12-14S to run at best efficiency. It's only 405kv so on 10S you would be only spinning around 15kRPM. You could swing a 120mm prop if one existed or run it through a counter rotating twin output gearbox to drive a pair of props. That would be very cool. I could be talked into selling it, but at an equivalent replacement cost.

BTW, did you receive your motor yesterday?

-Tyler

[meangenesracing]

Hey Geno,

Yeah it would be ideal for a big scale hull, but would likely need 12-14S to run at best efficiency. It's only 405kv so on 10S you would be only spinning around 15kRPM. You could swing a 120mm prop if one existed or run it through a counter rotating twin output gearbox to drive a pair of props. That would be very cool. I could be talked into selling it, but at an equivalent replacement cost.

BTW, did you receive your motor yesterday?

-Tyler

I'm on the road for work delivering sugar and haven't been home all week but I'm sure I did I haven't checked with wife
Where would I find one of them gear boxes? And of course I wouldn't expect any other than to pay replacement cost

[vvviivvv]

gives an idea of the power of them motors... you can't really get a bigger hull than this

[Reesor@work]

Just wow...and that hull is enormous!

[RaceMechaniX]

Where would I find one of them gear boxes?

Geno, this is what I had in mind: https://www.offshoreelectrics.com/pr...rod=tfl-525b85

[meangenesracing]

Geno, this is what I had in mind: https://www.offshoreelectrics.com/pr...rod=tfl-525b85

Tyler. Looks like a lot of moving parts to break lol. Do you have any experience with these gear boxes? Or maybe someone else on here. Not sure I'd want to go with a twin screw mono never seen one on the water. How about a higher kv 7050 for 10s in the Ambush.you could get one correct? Or maybe you could get me 2 of the 4140. 1100 kv for a twin cat. PM me some prices if you don't mind and then I can decide which way to go. And yes I received the 3060 it's home waiting for me, thanks

[RaceMechaniX]

Geno I have never run one, but someone I trust is running them in 60-70" offshore motors with twin inline 56cc and 70cc motors and he said they do OK. MHZ also makes one too but quite a bit more expensive. 405kv is a high as you can get for the 7050. It's already a special 3 wind which is not shown on the site. You would need to reduce the length to a 7040/4 wind to get 430kv or further to a 7025/5 to get 525kv.

I think a pair of 4140's on 10S or even 8S running Castle XLX2's would be better. I'll shoot you a price via PM.

Good to hear the 3060 arrived.

-Tyler

[meangenesracing]

Geno I have never run one, but someone I trust is running them in 60-70" offshore motors with twin inline 56cc and 70cc motors and he said they do OK. MHZ also makes one too but quite a bit more expensive. 405kv is a high as you can get for the 7050. It's already a special 3 wind which is not shown on the site. You would need to reduce the length to a 7040/4 wind to get 430kv or further to a 7025/5 to get 525kv.

I think a pair of 4140's on 10S or even 8S running Castle XLX2's would be better. I'll shoot you a price via PM.

Good to hear the 3060 arrived.

-Tyler

Tyler. Is that 8s per motor on the 4140's ?

[RaceMechaniX]

Yeah that would allow you to run the Castle XLX2 which has an 8S max input. Rumors are Castle are working on an HV version, but who knows when it will be released. If you wanted 10S then you need to look at fairy high end ESC's which can drive to high speeds and frequencies like MGM, Kontronik and YGE.