Hobbywing 4985 1650kv heatsink

[joostin420]

Found a heatsink that should work out well. Now need to figure out a mounting plate for fan(s). Not really a metal fab guy though. Check out my quick markup for the idea ?

 

[sleekone]

Found a heatsink that should work out well. Now need to figure out a mounting plate for fan(s). Not really a metal fab guy though. Check out my quick markup for the idea ?

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Nice heatsink....where’d ya find it?? ?

 

[joostin420]

Here you go ?

https://effluxrc.com/Heat-Sink-clamp-style-for-50mm-Motors-HS5050PAR.htm

 

[Overpowerrc]

Just use an xmaxx heatsink

 

[sleekone]

Just use an xmaxx heatsink

Too easy...plus I think that would be funding enemy operations ?

 

[Overpowerrc]

Buy off of eBay then you aren’t directing funding them

 

[boohoo]

I just used the yeah racing twin fan setup on mine. But thats looks different the one you got

 

[crimsonfancy]

Looks chunky!
I put the YeahRacing dual on my 2.0 E-Revo and liked it. Should've taken it off before I sold but I was happy to get what I got.

 

[aSae]

I just used the yeah racing twin fan setup on mine. But thats looks different the one you got

Looks chunky!
I put the YeahRacing dual on my 2.0 E-Revo and liked it. Should've taken it off before I sold but I was happy to get what I got.

Sorry to revive old post, am thinking to get the 4985 also but struggling to find the heatsink. Hope you can help share your setup a bit. As I understand YR Twin Fan heatsink (using it now in stock BLX185) diameter is 40mm, how do you fit it in 4985? is it bent-able enough and use longer screw to mount the bottom part?

 

[joostin420]

I ended up installing an x-Maxx heatsink mentioned by @Overpowerrc ??

not sure if I require a fan yet since I haven’t run it, but geared pretty tall with 25t pinion in the redcat be6s/tm bes.

 

[Hammer Down]

Sorry to revive old post, am thinking to get the 4985 also but struggling to find the heatsink. Hope you can help share your setup a bit. As I understand YR Twin Fan heatsink (using it now in stock BLX185) diameter is 40mm, how do you fit it in 4985? is it bent-able enough and use longer screw to mount the bottom part?

I heard this one will fit with some stretching, I’ll find out soon when my Max6 combo shows up. ?

https://www.amazon.com/dp/B00792P9W...olid=1SFEIYQ3VEHBQ&psc=1&ref_=lv_ov_lig_dp_it

 

[3d-rc.myshopify.com]

I heard this one will fit with some stretching, I’ll find out soon when my Max6 combo shows up. ?

https://www.amazon.com/dp/B00792P9W...olid=1SFEIYQ3VEHBQ&psc=1&ref_=lv_ov_lig_dp_it

It fits. That's what i am using. It doesn't sit well around the motor which wouldn't transfer heat as well. But it works... you also have to notch it a bit to fit the kraton.... I will take pics if needed

Sorry to revive old post, am thinking to get the 4985 also but struggling to find the heatsink. Hope you can help share your setup a bit. As I understand YR Twin Fan heatsink (using it now in stock BLX185) diameter is 40mm, how do you fit it in 4985? is it bent-able enough and use longer screw to mount the bottom part?

You want my honest opinion? The stock motor is all you need.... think about it. The stock motor can easily do a standing backflip... why would you need more??? My 4985 is fun and all but it isn't often I get above 1/2 throttle because of all the torque.

 

[aSae]

I ended up installing an x-Maxx heatsink mentioned by @Overpowerrc ??

not sure if I require a fan yet since I haven’t run it, but geared pretty tall with 25t pinion in the redcat be6s/tm bes.

this seems the closest fit (48mm dia). and i might don't need a fan if i use decent pinion/gearing... might try this one.

I heard this one will fit with some stretching, I’ll find out soon when my Max6 combo shows up. ?

https://www.amazon.com/dp/B00792P9W...olid=1SFEIYQ3VEHBQ&psc=1&ref_=lv_ov_lig_dp_it

you’re right, with 44mm dia might need a bit stretching, but might fit better than the YR ones. appreciated if you can share the result later

It fits. That's what i am using. It doesn't sit well around the motor which wouldn't transfer heat as well. But it works... you also have to notch it a bit to fit the kraton.... I will take pics if needed

thanks for the confirmation but if it doesn't sit well then might only be half useful? if you got pics that would be awesome!

 

[boohoo]

It fits. That's what i am using. It doesn't sit well around the motor which wouldn't transfer heat as well. But it works... you also have to notch it a bit to fit the kraton.... I will take pics if needed

You want my honest opinion? The stock motor is all you need.... think about it. The stock motor can easily do a standing backflip... why would you need more??? My 4985 is fun and all but it isn't often I get above 1/2 throttle because of all the torque.

I can go flat all the time and have max punch 500k centre. 18t and can get top speed np without stupid wheelies only drive dirt and grass but. I just cant go back to stock lol. Depends what you want I guess nothing wrg with stock but I had to have more.

 

[3d-rc.myshopify.com]

I can go flat all the time and have max punch 500k centre. 18t and can get top speed np without stupid wheelies only drive dirt and grass but. I just cant go back to stock lol. Depends what you want I guess nothing wrg with stock but I had to have more.

I run a 23t that definitely adds a lot of kick off the line. That max6 4985 combo loves the taller gears.

this seems the closest fit (48mm dia). and i might don't need a fan if i use decent pinion/gearing... might try this one.



you’re right, with 44mm dia might need a bit stretching, but might fit better than the YR ones. appreciated if you can share the result later



thanks for the confirmation but if it doesn't sit well then might only be half useful? if you got pics that would be awesome!

 

[Hammer Down]

Eye spy a very special item in those pics ?

 

[Mr.Duke]

That’s purdy ??

 

[3d-rc.myshopify.com]

That’s purdy ??

Yeah it's a work in progress. Lol. It is going to be a tri fan setup. All the wiring is there just been to lazy to put it all together. It's cold and snowy here so I have a couple months to push it off lol

 

[SubNova91]

Hi Guys,

Reviving this thread again.
So I've got the 4985 using the Xmaxx heatsink on my EXB. (Heavily modified I might add)

My question is, what temps are you guys getting? I had it running on a 20t pinion, stock spur with dual fans and it was too hot to touch. (Not hitting thermal cutoff tho)

Moved it down to a 16t thinking it will cut down on the heat, but haven't tested it yet. How can I run this on a 20t and not get these high temps?

 

[Mr.Duke]

145-150F after a full pack with full size backflips on a 20t
120-125 after full pack on katars on a 20t

what tires are you running and what temps are you seeing?