Jae .21

[jujux1]

Hi !

Here is a video of my jae with new set up.

leopard 3674 2200kv
seaking 180
2x3s nano 4500 45C
prop H7 mod
speed 84mph

http://www.youtube.com/watch?v=x0TXJV2cb0c

[martin]

How did you manage to fit the Seaking 180 into the tub because of the large size of this esc, Nice runs. Martin.

[Serpents811]

nevermind the seaking 180 , i want to know how he fitted 2x 3s in there , i got a jae 21fe and 4s1p or even 4s2p is a tied fit

[jujux1]

Simply, I modified the water proof "jacket" it fits just but it does

post-3712-0-30425200-1322248432_thumb.jpg

I'll show a pic of 2x3s into the tub, it fits just but it does too.

[martin]

I can see it looks like you turned the cooling plate around 180degrees, can you give details on what you had to modify to do this as its not clear in the picture. I was going to modify a Seaking 180 to go in a JAE 21 but i was thinking of leaving the cooling plate as it was & cutting of the water tubes & blanking of & then fitting my own 90degree tubes into the top of the plate. Martin.

[jujux1]

sorry for this picture, i know that's not very clear.
I have tooken a plate of aluminium thickness 1.5mm for the base which it's fix on the esc, then i made a" box" with glue on this base and I fix with glue 2 tubes (in red) inside the box
Is it clearer for you?

What you describe is a good solution, the aim is to cold the esc

post-3712-0-30425200-1322248432_thumb.jpg

[martin]

Yes i can now see you made a completally new cooling plate rather than modding the original. What mah lipos did you use & what c rating.

[jujux1]

Hi !

Here is a video of my jae with new set up.

leopard 3674 2200kv
seaking 180
2x3s nano 4500 45C
prop H7 mod
speed 84mph

http://www.youtube.com/watch?v=x0TXJV2cb0c

It was written.... 4500 mah & 45C

[martin]

Yes my brain had gone to sleep, Thanks. I was thinking of possibly using a Leopard 4074 or 4082 series motor that i know just fits in with small mods but not sure if its to much motor. I have seen these motors being use in the JAE 21 ok.

[jujux1]

Don't worry....
No, a 3674 is enough, 2400w max is enough to push a rigger of 2.5kg. I have started with a 3665. You will spend more money for more weight and for nothing more at the end.
My 2 cents

[martin]

Is a 3674 - 2200kv on 6s a better choice because of the lower amp draw than so making it easier on the esc than a 3674 - 3270kv on 4s. Also do you prefer 3s x2 rather than 6s x 1.

[Kenny77]

Is a 3674 - 2200kv on 6s a better choice because of the lower amp draw than so making it easier on the esc than a 3674 - 3270kv on 4s.

Good question, I too am looking at the 3674 but wasn't sure of the KV since I want to stay on 4s.

[martin]

With either set ups 2200kv on 6s or 3270kv on 4s these are very high rpm set ups (48,000 - 49000rpm) & suited to SAW runs where very short run times are used. It depends on what sort of running & times you want to do, you may need to look towards a 2650kv on 4s which will be more usable but still give 39000rpm so you will still have to watch temps but will be a bit safer.

[jujux1]

Let me explain....
At the begining, I started with leopard 3665 2680kv on 4s which give 40000rpm, I testesd with 5800 zippy 30C and nano 4000 45C (4S)
The best speed was 66.3 mph with 18° on timing. ESc+motor+and lipos stayed cold, the run time was a litlle bit more than 4 min with 5800mah and more than 3 min with 4000mha.
The best prop i could run was the H7.

With my friends (I live in France) we want to do a fench saw session in april, so I decided ot test the 3674 2200kv, with that set up I could use my 4S lipos and enjoy on oval at 60mph.
I asked my friend (who make him-self his rigger, he becomes an expert!!) if to put 6S on 2200kv to do saw run is good choice.
He approved that so I execute.

You are right this very hight rmp set up but at the end of the, run I was very surprised!! all was cold 35°C in average.
You are also right "3674 - 2200kv on 6s a better choice because of the lower amp draw than so making it easier on the esc than a 3674 - 3270kv on 4s"

Why 2X3s instead of 1x6S because I can use it in in small mystic and if a cell is dammaged, It's easier to change it with a lower cost.

The run time on 6S was at least 3 min so it's enough to enjoy and make saw run.
I'm happy of this rigger !!!
Ps : sorry for my poor english frenchie Sinking:

[martin]

What size flex shaft did you use .150 or .187 & what strut & type of bearings in the strut (lead teflon, ballbearings or different). Thanks.