Neugart Forum Order


#1

I talked to Neugart today about the PLE40. The sales representative told me that we could get a special version with low temperature oil which will be better for our high input speeds. He says that the PLE 40 can run up to 18k RPM with active cooling. They can offer shafts with keyways or just cylindrical and of course we can chose 1:4,5 or 7 transmission. We can also chose any motor mount.

The best thing. If we order 7-10 units, we get them for 174€ including taxes. Remember there is no tax for shipping within Europe. So if we order together, we get a bunch of them, cheaper and made to our specs. If each of us orders 2, we would get them even cheaper and could sell them to new forum members with a bit of a profit. Win win for everyone.

The gear manufacturers told me that none of them keep inventory due to the big amount of possible configurations. I think this is our hest shot at getting good and cheap gears. Delivery will be end of june though. I could try to get a different manufacturer to do it faster for us if you have any candidates. There are about 7 big gear manufacturers in Germany.


#2

Hi MaxMaker,

that’s a good idea :+1: but the 7-10 untis have to be the same - so we have to define a design.
I’m think this points are good to have:

  • The gear can carry all axial load from prop
  • The output shaft is longer and cylindrical
  • It can take 8 and 10mm input shaft
  • What are your preferences?

Maybe your are from Germany - where are you located?

Mike


#3

I am from Germany. I really don’t mind. They don’t do specialized output shafts though. At least not for this price. We need thrust bearings anyway, so connecting the prop directly won’t be a good idea.


#4

Have you considered the Gearbox DIY (4,5:1) thread? Going DIY could be much quicker once you figure out the engineering.


#5

Yes of course, but I try to buy as much as I can. The time is often just not worth it.


#6

Hey MaxMaker
I am from Germany too, a friend and I are building two boards in the next months so we would join your order with two gears. The problem is end of June is very late. Could we get them earlier?


#7

Nope. I wish we could. I am going for direct drive outrunner now since there wasn’t much demand.


#8

Hi Max, I know this is much later than your original post, but if you ever decide to change your design & switch want to go back to the Neugart gearbox, then please let me know. I would also be interested in placing a combined order.

I have also been in contact with Neugart, however the sales rep claimed that they have a 38 week lead time on their complete sortiment!!!
Perhaps if the order quantity was larger then she might be able to accelerate that lead time… hmmm

(I’m also in Germany btw.)


#9

Dear Windtigertim,
Right now im printing the parts(pacificmeister) and my foil will arrive next week.
I would like to join in for the order as well! Im from Holland btw.


#10

I got a quote from the us dealer with just a few weeks delivery. I live in Alaska.


#11

I’m also interested…


#12

Hi

any news from neugart? - i would be interessed too …

bythe way i found this https://www.willhaben.at/iad/kaufen-und-verkaufen/d/planetengetriebe-neugart-3stk-260710559/ - seems a litte big but perhabs i can be usefull - 90€ for a neugart seem cheap …


#13

Hi @mikezwgr,
Actually in the meantime I have found and purchased a few neugart PLE060’s (3:1, and 4:1) on eBay which I am currently testing with my setup.

The 60mm series are noticeably bulkier & heavier than the 40mm range of gearboxes. Because of this I
personally I would not recommend considering a PLE090. That’s overkill :wink:

Sure, the large ones are more robust than the smaller ones, however they do create more drag & add a lot more mass to the product. Usually the output shaft is much thicker and therefore a suitable coupling needs to be very precisely machined & balanced in order to avoid devastating vibrations caused by the potential shaft imbalance @ relatively high rpm.


#14

…and again i learned something new :wink: thx - now i understand the PLE60 or PLE90 means :wink:

I’m thinking of using a motor like this TP5690 and an 3:1 Ration (witch was mention here Peters Concept (Bavarian style))

Perhabs one more Question - wich number is the reduction?


#15

@mikezwgr : Look at this german datasheet for the ple series. The number after PLExx is the diameter in millimeters. The gear ratio is an extra number. The ratio is called “i” in the datasheet.
@Windtigertim
I have a PLE60, too. Mine is i=8. I did want to use the full power from an inrunner at 50V, but I realise that I am well beyond any reasonable input rpm limit on the gearbox with this. 40krpm is probably too high :sweat_smile:


#16

@Flo haha yes. I think 40k input rpm would heat things up real quick!!

I am using a certain inrunner which can spin up to 14,500 rpm @ 12S.
For now I have limited the motor speed to 10,000rpm in my VESC6 config.

But I can tell you that even 10k of input rpm makes my PLE60 i=3 gearbox heat up to a point where I can barely wrap my hand around it without it being too hot to touch. I plan on attaching a temp. sensor to the gearbox and making a more accurate measurement soon :wink:

Please bear in mind that my gearbox is currently filled with the ‘standard grease’ option, and that my tests have been taken in air. Underwater will of course keep things a lot cooler.

Nevertheless I am considering replacing the standard grease with a more suitable lubricant to handle the high input speed & temp.

@MaxMaker, did the Neugart rep which you spoke to happen to mention the product name/number of the ‘high input speed’ grease?

By the way, has anyone had any experience with http://www.dry-fluids.com/dryfluid-gear-lube-1.html ?


#17

@Windtigertim - to you mind share the excact motor you have? - is it a TP5690-v1 @290 KV ?


#18

I found this on ebay (https://www.ebay.at/itm/NEUGART-PLE60-Planetary-Gearhead-i-3-OP-06-UN/322870533643?hash=item4b2c955e0b:g:T-8AAOSwk1JWcEF4) a PLE60 i=3 but with a realy big “Base” - in here the base seems smaller https://www.ahs-antriebstechnik.de/pdf-dateien-d/Getriebe/PLE.pdf

any thoughts?


#19

The base is only aluminium, so I wanted to machine it down. My problem was in removing the screws and disassembking the gearbox.


#20

He said it is low temperature oil. I guess its meamt to be used in freezing temperatures and naturally thinner than normal oil.