ktmsmt motorcycle

KTM Super Twins Forum

Owners, desirers and news about KTM Super Twins

2nd radiator fan

Here be mechanigeeks. Anything technical that is not a teething problem.

2nd radiator fan

Postby kevxtx » Wed Aug 17, 2011 11:13 am

Living in a hot climate I am worried about how long the radiator fan runs for, so I made up a 2nd fan to run at the same time as the main fan, this will allow the cooling system to cool down quicker each time the fan runs.

I bought one of these fans from this guys.

http://www.ebay.com.au/itm/190557264240

Fan spec's

http://www.spalautomotive.co.uk/acatalo ... -62A-S.pdf

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

I will finish off the fan this weekend with a coat of black paint & a shroud to direct the air away from the air box & motor.
kevxtx
Moderator
Moderator
 
Posts: 3275
Joined: Fri May 27, 2011 11:40 am
Country: Australia
City: Brisbane
Year: 2014
Model: SMT

Re: 2nd radiator fan

Postby White Knight » Wed Aug 17, 2011 4:24 pm

Nice Kev! I think you're the first to add one to an SMT. There are kits for the Adventures, but nada for the SMT.

What I winder about is why KTM shrouded the radiator in the first place. Would it not be more efficient to leave the back of the rad open?
Image
User avatar
White Knight
675cc
675cc
 
Posts: 195
Joined: Sat Apr 09, 2011 4:42 pm
Country: Canada
City: Victoria
Year: 2011
Colour: White

Re: 2nd radiator fan

Postby Stu46Duke » Wed Aug 17, 2011 5:15 pm

Oh to need to put an extra fan on. I was thinking of strapping a hairdryer to mine to warm it up enough. Typical british summers!
2010 SMT (Orange) Centre Stand, RAM Mount, Skidmarx Hugger, Fender Extender, Givi Trekker Luggage, Datatool S4, Michelin PR3's, ACF50 (lots of).
2005 Yamaha FZS1000S (soon to be a classic - well better than the new one)
2013 Triumph Tiger 800 ABS
Stu46Duke
500cc
500cc
 
Posts: 85
Joined: Thu Feb 03, 2011 7:02 pm
Country: UK
City: Manchester
Year: 2010

Re: 2nd radiator fan

Postby kevxtx » Wed Aug 17, 2011 10:49 pm

The SMT/SMR shroud does not cover the whole radiator, about 20% is uncovered so it does have a 2nd through put besides the main fan at low speeds, also with the louvers removed & the 2nd fan in place it will allow more air through the radiator shroud at lower speeds. You won't be able to fit the 5" fan there is not enough space, there is just enough space to fit the 4" fan.

I decided to leave the KTM shroud on as I would have had to make 2 fan brackets & that looked like to much work, you can also pull more air volume across the radiator core with a shroud.

I have no concerns with the cooling system while riding, it is the stop start conditions I was worried about, my fan in traffic just run & runs & runs, hopefully this will help the cooling system recover quicker.
kevxtx
Moderator
Moderator
 
Posts: 3275
Joined: Fri May 27, 2011 11:40 am
Country: Australia
City: Brisbane
Year: 2014
Model: SMT

Re: 2nd radiator fan

Postby dflowers » Mon Jun 04, 2012 5:43 am

Wondering if the added fan was effective? I am now riding my bike in warmer temps and the single fan runs all the time. I have the cooler thermostat installed so that is one reason the fan runs so much.
dflowers
675cc
675cc
 
Posts: 167
Joined: Sun Oct 23, 2011 3:08 am
Country: USA
City: Seattle
Year: 2010
Colour: White

Re: 2nd radiator fan

Postby jgiachino » Mon Jun 04, 2012 7:10 am

looking forward to feedback on how it works as well.....here in Phoenix it's starting to get > 105* and at the stop lights it's just to hot to let sit there idling...i actually shut the bike off at the longer lights.....if the second fan works i'll give er a try...not getting any cooler anytime soon...
2010 990 SMT: Orange, Akra's, Ctr Stand, Shock PreLoad Adj, Touring shield, KTM Top Bag, Akra 11 Map, o2, Sai, EPC Off, 16th, Shorai Bat
Future: AUX Lights, Luggage

2012 450 XC-W: well set up
2013 350 XC-F: well set up
jgiachino
125cc
125cc
 
Posts: 36
Joined: Tue May 01, 2012 7:21 am
Country: USA
City: Phoenix
Year: 2010

Re: 2nd radiator fan

Postby kevxtx » Mon Jun 04, 2012 9:30 am

They work well, the fans still run at the correct time they just run for a shorter period.
kevxtx
Moderator
Moderator
 
Posts: 3275
Joined: Fri May 27, 2011 11:40 am
Country: Australia
City: Brisbane
Year: 2014
Model: SMT

Re: 2nd radiator fan

Postby dflowers » Mon Jun 04, 2012 7:39 pm

Thanks! I just ordered that fan you specified and will do an installation soon.
dflowers
675cc
675cc
 
Posts: 167
Joined: Sun Oct 23, 2011 3:08 am
Country: USA
City: Seattle
Year: 2010
Colour: White

Re: 2nd radiator fan

Postby hardright » Fri Jan 24, 2014 12:27 pm

Hi Kev, nice mod. What is the difference between the SPAL 62A and 62S? Would like to do the same mod on my bike.
User avatar
hardright
125cc
125cc
 
Posts: 11
Joined: Tue Feb 12, 2013 12:34 pm
Country: Philippines
City: Pasig
Year: 2012
Colour: White

Re: 2nd radiator fan

Postby kevxtx » Fri Jan 24, 2014 12:46 pm

I used a VA32-A101-62A, not sure what the differences are they list the same spec's.
kevxtx
Moderator
Moderator
 
Posts: 3275
Joined: Fri May 27, 2011 11:40 am
Country: Australia
City: Brisbane
Year: 2014
Model: SMT

Next

Return to Technical discussions

Who is online

Users browsing this forum: Bing [Bot] and 3 guests