HobbyKing.com New Products Flash Sale
Reply
Thread Tools
Old May 23, 2001, 05:50 AM
HyperFlight Support
Neil Stainton's Avatar
United Kingdom, England, Stratford-upon-Avon
Joined Feb 2001
3,890 Posts
Jeti Brushless ESCs & F5B?

I've got a new Jeti 70A brushless ESC which I am hoping to use on a Kontronik Fun 480-55 with 7 cells, and sort of F5B current levels. I haven't bought the motor yet, and I am wondering if anyone has actually tried anything like this?

I realize that the setup won't be really competitive (which I can live with), but I don't want to buy the motor if anyone has had negative experiences trying this - I could always use the ESC in a sport application instead.

All help, opinion, and experiences, would be greatly appreciated.

Neil.
Neil Stainton is offline Find More Posts by Neil Stainton
Reply With Quote
Sign up now
to remove ads between posts
Old May 23, 2001, 08:28 AM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
From a couple of emails from Jeti directly:
---
Our controller (70-3Popto) was tested in Ariane (?) for 10 cells with Hacker
(???) - current 85 - 90 amps. with no problems.
There is 8 + 8 fets 10m... for each phase. It means 48 fets together.
It is the same like Kontronik 70/100 Amps.

Best regards. J. Tinka
---
Good news indeed, eh?
..a
Andy W is offline Find More Posts by Andy W
Reply With Quote
Old May 23, 2001, 09:17 AM
HyperFlight Support
Neil Stainton's Avatar
United Kingdom, England, Stratford-upon-Avon
Joined Feb 2001
3,890 Posts
Thank you for the info Andy. I've also had an email from Michael Franz saying:
<<<
Errrrm,
with the Jeti controller you have a much higher rpm and must use a smaller
prop and have less motor efficiency.
>>>
So maybe the Jeti controllers aren't so good with Kontronik motors???

Neil.
Neil Stainton is offline Find More Posts by Neil Stainton
Reply With Quote
Old May 23, 2001, 10:13 AM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
Don't see how a controller could make that much of a difference.
..a
Andy W is offline Find More Posts by Andy W
Reply With Quote
Old May 23, 2001, 02:21 PM
Registered User
Alan W's Avatar
NY
Joined May 2000
2,199 Posts
Quote:
Originally posted by Ben Diss:
I think it has to do with the timing-Ben
Current issue of S&EM , Steve Neu tests come to this general conclusion, also stating that because of this, it may not be good to use them with ?older? Aveox motors....

-------------

Andy - Im kinda in the same boat as you, looking for a power system for the Ariane V10...did a mockup of the F12lmr+L260C and where the 10x2000 pack needs to sit - not good results

Did they state what Hacker motor they were using ?

Alan W
Alan W is offline Find More Posts by Alan W
Reply With Quote
Old May 23, 2001, 03:07 PM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
Nope, that's all the info I have.
..a
Andy W is offline Find More Posts by Andy W
Reply With Quote
Old May 23, 2001, 09:55 PM
joe
Registered User
greenbay,wi,usa
Joined Apr 2000
412 Posts
I will be flying my trusty sig ninja this week end weather permiting
I have a jeti 70 amp speed controller
I will be using it on my aveox 1406-2y with 15 1000 scr cells
I am planing on first trying it on a 12-9 folding cam propeller and than moving up to a 13-10 if I can get one in time
The all up weight is 64 oz with a 500 square inch wing area
I know it is a clean ship because you can hardly hear it on a fast flyby
I will let you know how it works
EG if it gets to hot or blows up

Wish me luck
Crazy Joe
joe is offline Find More Posts by joe
Reply With Quote
Old May 24, 2001, 12:27 AM
Registered User
Ben Diss's Avatar
USA, NY, Chestnut Ridge
Joined Jun 2000
1,694 Posts
I think it has to do with the timing. I believe that the Kontronic uses 15 degrees. Maybe the Jeti has more aggressive timing. I also heard that the Jeti has a higher internal resistance due to the use of non-premium fets. This I don't know for sure, but it seems logical given the price.

-Ben
Ben Diss is offline Find More Posts by Ben Diss
Reply With Quote
Old May 24, 2001, 12:47 AM
Registered User
ScotY's Avatar
Joined Feb 2001
2,818 Posts
I spoke to Sean Plummer at Aeromodel about this controller. My memory may be a bit off, but he said he's been stress testing the Jeti controllers and the 70 amp version is okay to ~80 amps. You may want to ask him?
ScotY is offline Find More Posts by ScotY
Reply With Quote
Old May 24, 2001, 10:17 AM
Registered User
Ben Diss's Avatar
USA, NY, Chestnut Ridge
Joined Jun 2000
1,694 Posts
I'll be doing some tests of the Jeti 70A against a Schulze 88Fo. What I think I can do is measure volts, amps and prop RPM in each of the Schulze's modes and them do the same with the (single mode of the) Jeti.

Can anyone think of anything else I can look at and report on? Unfortunately, I'm not able to measure thrust.

-Ben
Ben Diss is offline Find More Posts by Ben Diss
Reply With Quote
Old May 24, 2001, 11:41 AM
RIP Ric
Andy W's Avatar
Marietta, GA
Joined Jun 1999
43,312 Posts
For our purposes, RPM & A are sufficient. Shame you only have a Schulze to compare to, however. It's bound to lose! Now against an Aveox would be interesting..
..a
Andy W is offline Find More Posts by Andy W
Reply With Quote
Old May 24, 2001, 01:40 PM
Registered User
Ben Diss's Avatar
USA, NY, Chestnut Ridge
Joined Jun 2000
1,694 Posts
Once I get my melted 70A Kontronik back from repair I'll try that as well.

-Ben
Ben Diss is offline Find More Posts by Ben Diss
Reply With Quote
Reply


Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Sport F5B - Jeti Brushless? SoarNeck Electric Sailplanes 1 Jan 20, 2002 06:36 PM
Twin Jeti Brushless??? realdeal Electric Plane Talk 4 May 28, 2001 01:29 PM
ECALC info for Jeti Brushless ?? jmelzer Electric Plane Talk 0 May 20, 2001 01:42 AM
Jeti brushless ESC & Ikarus brushless motor albatros Electric Plane Talk 1 May 06, 2001 04:33 PM
Jeti Brushless on HL Web Site Courtney Electric Plane Talk 0 Apr 22, 2001 07:45 PM