Just bought Schulze 40-161 esc no wk model... like new but not watercooled

[JMSCARD]

Has anyone got a good system for watercooling these newer schulze's? I just bought two !!!! Of the newer 40-161 non WK esc's... they are like brand new :):):) got a great deal too! doing the happy dance now!... would love to see some of the pros upfits!

[RaceMechaniX]

I have converted several non-WK versions over including a pair just recently. This includes
1. Adding 9 additional Rubycon caps
2. soldering on 5mm brass tubes
3. Replace 12AWG wire with 10AWG or 8AWG
4. Masking and conformal coating
5. Adding Polyolefin shrink.


DSC_9348.jpgDSC_9342.jpg

[JMSCARD]

tyler you are an electronics master lol... those look better then the factory jobs! I pm'd you again lol

[JMSCARD]

image.jpg

Here they are Tyler! Will they work? Haha... If so you're hired!!!! I love this forum :)

[RaceMechaniX]

Yes, they can be converted like the ones I posted above.
TG

[Fluid]

The last 40-160WK (old model) I've seen had the cooling tubes glued on with what appeared to be thermal conductive epoxy, not solder. If you are not confident in your soldering skills, this may be a safer option. Arctic Silver epoxy is a good choice, I used it on the Castle ICE aircraft controllers I've converted to marine use.


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[JMSCARD]

The last 40-160WK (old model) I've seen had the cooling tubes glued on with what appeared to be thermal conductive epoxy, not solder. If you are not confident in your soldering skills, this may be a safer option. Arctic Silver epoxy is a good choice, I used it on the Castle ICE aircraft controllers I've converted to marine use.


.

Fluid thanks for your response! And yes I'm fairly confident with my soldering skills, yet either way on these esc's I'd really like them done right as I'd like to keep them around for awhile :) I'm actually having Tyler upfit them for me the same way as he has showed posted in this thread..... when it comes to certain things I'd rather leave it to people who have the talent that I lack :) and when I saw his pic posted I said to myself "I want mine to look like that!!!" :) But in reality, being the schulzes are so hard to find without paying $600 plus each... the deal I got on them, and the very kind of tyler cost for me to upfit them means I'll still be getting two esc's or the price of one! Thanks Tyler, and thanks Fluid for all your help.... when it comes to members here I always hope I might hear from either one of you two for honest knowledge that is well beyond mine! Thanks again!!!!!!!!!!!!!!

[ray schrauwen]

I care in Canada is still selling some Schulze esc's. With a 20% exchange rate some deals can be had. They are clearing out stock: http://icare-rc.com/motor_controls_b...ss.htm#Schulze

Thats 20% if prices are in Canadian but, I may be wrong??

[JMSCARD]

I care in Canada is still selling some Schulze esc's. With a 20% exchange rate some deals can be had. They are clearing out stock: http://icare-rc.com/motor_controls_b...ss.htm#Schulze

Thats 20% if prices are in Canadian but, I may be wrong??

I saw that ray.... But don't get what you mean by the 20%... Is the price listed in US $ what I'll actually pay? Still says $539 for the 40-161 wk's... Then I imagine shipping won't be free... Is it 20% off from that? If so I may pick up one of the 100 amp models for another project as it's listed at $369 for the 40-100wk if it's 20% off from that it's a great deal!!

Oh and Ray, I appreciate your posts too !

[Fluid]

The prices on the link are in US$.


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[JMSCARD]

The prices on the link are in US$.


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That's what I was thinking ..... still good deals to be had, and haven't actually seen what shipping is to me in the US, ordered a 40-160 from them years ago and remember shipping was fairly expensive especially after the $700 controller price.... great company though for sure...

Fluid, is the 40-100wk really only a 100 amp esc? or is it underrated like all the schulzes.... wondering if it would be good to use with the 4035 motors I have laying around.... obviously I would be careful not being crazy prop wise.. but figuring a x452/3 maybe up to a x455 in a Delta force 38.5".... and 10s. That boat is just going to be my ocean wave jumping fun boat. I have 4035/800's and 630's so might use the 630kv on 12s as I have lots of 6s packs.

[RaceMechaniX]

Ray,

Etienne at Icare only has the oddball smaller Schulzes left, none of the 32.202wk's or 40.161wk's. I know he shows them on his website, but they are not in stock.

Jay,

To your point there is a difference in modifying the old ones versus the new ones. It is possible to solder cooling tubes on the new ones with several precautions to block the heat going into the board. I use a thermal blocking putty spread over the near side FETS that absorbs heat. Since the new boards do not have the heavy copper core, it is possible. I have been strongly cautioned against adding cooling by soldering to the older 40.160wk's as the copper plate conducts so much heat you will destroy the components before the solder flows. I have heard that Schulze would only convert non-WK models to WK after all the components were removed. Artic Silver or similar does work. Another solution for adding cooling to the older Schulzes is to machine copper cooling logs and thermal paste them in place. Using copper is important over aluminum to avoid the galvanic cell created by dissimilar metals. I am in the process of machining a set of cooling logs for an old heli version Schulze to convert it to marine use. pics below. Jay, I believe I have seen a pic of your Q cat with a fan cooled 32.170 with 5 FETS per bank. Is this right? Pic also below.

Jason,

The 24.150wk and 40.100 are both overrated. Both have cooling problems and cannot sustain outputs like the 32.2XX, 40.16X and 40.3XX's. They are OK for smaller motors like 19 series LMT's, but cannot push larger ones.

Tyler

2dvkbb6.jpgSchulze 40.160H with Chill logs.jpg

[JMSCARD]

Ray,

Etienne at Icare only has the oddball smaller Schulzes left, none of the 32.202wk's or 40.161wk's. I know he shows them on his website, but they are not in stock.

Jay,

To your point there is a difference in modifying the old ones versus the new ones. It is possible to solder cooling tubes on the new ones with several precautions to block the heat going into the board. I use a thermal blocking putty spread over the near side FETS that absorbs heat. Since the new boards do not have the heavy copper core, it is possible. I have been strongly cautioned against adding cooling by soldering to the older 40.160wk's as the copper plate conducts so much heat you will destroy the components before the solder flows. I have heard that Schulze would only convert non-WK models to WK after all the components were removed. Artic Silver or similar does work. Another solution for adding cooling to the older Schulzes is to machine copper cooling logs and thermal paste them in place. Using copper is important over aluminum to avoid the galvanic cell created by dissimilar metals. I am in the process of machining a set of cooling logs for an old heli version Schulze to convert it to marine use. pics below. Jay, I believe I have seen a pic of your Q cat with a fan cooled 32.170 with 5 FETS per bank. Is this right? Pic also below.

Jason,

The 24.150wk and 40.100 are both overrated. Both have cooling problems and cannot sustain outputs like the 32.2XX, 40.16X and 40.3XX's. They are OK for smaller motors like 19 series LMT's, but cannot push larger ones.

Tyler

[ATTACH=CONFIG]127586[/ATTACH][ATTACH=CONFIG]127587[/ATTACH]

Good info tyler, I'll keep on looking for the 40-160 and 40-161 varieties lol.... the two I just bought have been shipped and the seller paid for 3 day ship to me from overseas.... what a good seller he is!!!! I will get them shipped off to you when I receive them... thank you so much for your help on this!

[RaceMechaniX]

OK Jason, also keep an eye out for the 32.2XX series. These are as good as the same vintage 40.16X's.

TG