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HelicopterGasser Model RC HelicoptersOther › wally fan for spectra g
04-07-2011 12:17 PM  6 years agoPost 1
HOYTAB

rrNovice

Kingston NH

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hi im looking for a wally fan and shroud for spectra g if you guys know any one thanks

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04-08-2011 02:34 AM  6 years agoPost 2
smallplanes

rrElite Veteran

S.C. ,SSA

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I think the fan that comes from MA is good enuff for for the cooling on the G. I think most people think aftermarket is always better but not in all case's,fly it like it is and you will be happy.

Try what you have.
Thanks
smallplanes


Spectra G 26cc
Jewel
Bat 27cc
Trex 700<br

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04-08-2011 03:09 AM  6 years agoPost 3
woody37

rrApprentice

McAllen, Texas

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Justin Stuart might have one.. He is selling Wally's perfectly running engine. He might be selling his fan!

Woody

A bad day of flying or fishin is better than a good day at work!

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04-08-2011 03:34 AM  6 years agoPost 4
KopterKat

rrVeteran

New Jersey

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I don't think Justin is selling his. I asked that very question and he seemed to be annoyed that I would ask such a question. Something like "Have I done anything to indicate my fan is for sale" Well yeah, kinda.

So I wouldn't use Justin's name with a Wally fan for sale.


FlipMode Squad

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04-08-2011 04:36 AM  6 years agoPost 5
turboomni

rrProfessor

East of the Equator

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I think the fan that comes from MA is good enuff for for the cooling on the G. I think most people think aftermarket is always better but not in all case's,fly it like it is and you will be happy.
I think smallplanes has a good point. I run the min air stock metal fan that came with my old 1005 gasser with a modified Hanson 26cc Pro Plus. The metal fan was on the original 23cc old style Zenoah which was not nearly as powerful as the Hanson. I have had no problems in the cooling department even though the old girl has alot more horsepower than the original motor. I am not saying the Wally fan is not better than stock as many have said it is better,, BUT If there were many cooling problems in the past I would think the Wally type fan would have been invented long ago just out of necessity.
just my 2 cents

Setup is everything, All my heli's can fly far better than I can pilot them

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04-08-2011 06:19 AM  6 years agoPost 6
C.A.P.

rrApprentice

custer park IL.

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These are pictures I post before, this will improve the stock Minair cooling system by 20+ degs,
The shroud modification will get the air where it need to go, and you will see a good drop in temps.
The redirct is made for a rc engine cove you can buy at Dave's motors.

BUT If there were many cooling problems in the past I would think the Wally type fan would have been invented long ago just out of necessity.
just my 2 cents
NO One and I mean no one thought the fans could be improved, Before I sent the fan to Billme to tested,
While the Cooler fin design pushes more air, I found you can improve most any fan's air flow with a little shroud modification

Wally
(Affiliation) RC-Aftermarket (Engine Modifier & Engine Designer)

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04-08-2011 11:45 AM  6 years agoPost 7
HOYTAB

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Kingston NH

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thanks for the input guys. im just dying to get my spectra in the air its my first one.i still love the way my predator flys but i want to keep up with the jones's/cause thats all i here on this site how good they are.wally thanks for the phone call yesterday. i know i drive you crazy/but your allways there to help me.

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04-08-2011 02:09 PM  6 years agoPost 8
Chris Bergen

rrElite Veteran

cassopolis, MI USA

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Quote
--------------------------------------------------------------------------------

BUT If there were many cooling problems in the past I would think the Wally type fan would have been invented long ago just out of necessity.
just my 2 cents
--------------------------------------------------------------------------------

NO One and I mean no one thought the fans could be improved, Before I sent the fan to Billme to tested,
Ouch....

Chris D. Bergen

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04-08-2011 04:28 PM  6 years agoPost 9
RC-Aftermarket

rrNovice

Custer Park IL.

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Chris[quote]Ouch....

I did say most, "Not All"

Wally
RJX- X90 Z 30cc
RJX X90- C-30cc
Radikal 20 C-30cc
Predator Z-30cc

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04-09-2011 12:00 AM  6 years agoPost 10
woody37

rrApprentice

McAllen, Texas

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Turboomni...

I think smallplanes has a good point. I run the min air stock metal fan that came with my old 1005 gasser with a modified Hanson 26cc Pro Plus
What is your average ambient temp? I had a spectra with a stock G231 with a stock fan that pushed temperatures close to 300 degree F... It ran and flew great but just had a cooling issue. Here down south, we are pushing summer temperatures around 95 to 105... In the same ambient conditions, my Radikal (at it's hottest) was averaging 210-215 F with a Wally designed fan and his homemade redirect (like his pics). An 80 degree drop from a redirect and properly designed fan was a big difference for me.

HoyTab, if you can get a Wally fan, get one.. It makes a huge difference. Just my 3 cents..

A bad day of flying or fishin is better than a good day at work!

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04-09-2011 12:12 AM  6 years agoPost 11
turboomni

rrProfessor

East of the Equator

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Well I'm not very scientific and use the spit on the finger method I learned from Raja. He did help me to tune it a long time ago. I'm on my 4th or 5th year on the motor now and last time I looked in the exhaust port the thing looked new. It still has lots of compression and starts right up year afer year. I would think you guys down south would have more problems with cooling .

ambient temp is 60 to 80 tops.

Oh I did modify my 1005 to accept the Spectra fan shroud ,that may have helped.

If I could get my hands on a Wally fan I'd grab it for sure!

Setup is everything, All my heli's can fly far better than I can pilot them

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04-09-2011 01:42 AM  6 years agoPost 12
Carey Shurley

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Orlando, FL - USA

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the cooling system originally sold by RC-Aftermarket was a significant improvement over the XCell Spectra OEM system for four reasons:
  1. the fan hub was carefully machined and would typically just bolt on to a tolerance less then .001" total run out.
  2. the fan had more fins that were taller so it moved more air (unfortunately it also would not fit in the stock shroud without making a spacer)
  3. the fan/hub was heavier than the stock assembly. The PUH motor liked more crank weight
  4. the custom made cooling shroud/deflector did a better job of moving air across the right parts of the cylinder
In every test I ran, it reduced the running temperature of the cylinder by about 40F degrees.

It is true that adding the deflector to the bottom of the stock Spectra shroud and opening up the air inlet at the top while running the stock fan will improve the running temperature but not by as much as the complete system.

Its not a matter of the stock cooling system doesn't work, it does. This simply worked better.

If you have a Spectra and have a chance to get one of these setups, do so you'll be happy with it.

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

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04-09-2011 01:58 AM  6 years agoPost 13
turboomni

rrProfessor

East of the Equator

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aren't the fans now made of unobtainium?

Setup is everything, All my heli's can fly far better than I can pilot them

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04-09-2011 02:10 AM  6 years agoPost 14
Carey Shurley

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Orlando, FL - USA

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I'm not aware of any commercial availability of the fan or original shrouds. I've heard rumors of a similar fan being made but haven't seen anything yet.

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

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04-09-2011 04:00 AM  6 years agoPost 15
turboomni

rrProfessor

East of the Equator

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I'm not aware of any commercial availability of the fan or original shrouds. I've heard rumors of a similar fan being made but haven't seen anything yet.
That a shame its not available.

By the way Carey nice job on HF!

Setup is everything, All my heli's can fly far better than I can pilot them

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04-09-2011 04:03 AM  6 years agoPost 16
Carey Shurley

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Orlando, FL - USA

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thx, trying to be helpful

If you're not flying a gasoline helicopter
You're paying 10 times too much for fuel!!

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04-11-2011 01:45 PM  6 years agoPost 17
KopterKat

rrVeteran

New Jersey

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FlipMode Squad

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07-10-2011 05:24 AM  6 years agoPost 18
sps3172

rrNovice

St. Louis, MO

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Part Numbers Needed

I'm finally getting around to finishing a Spectra/TRM231 combo that's been sitting for several years (I know...shame on me). That being said, it seemed I might as well make these cooling updates during the initial build.

From what I gather, I can no longer buy the 'Wally' fan and shroud so the next best thing is to modify the stock shroud with a 'redirect' and larger opening at the inlet.

Am I on the right track?

Can someone help me with the part number/s needed from DDM for this 'redirect'?

Am I buying a stock shroud for the RC series engine and cutting it up or is there actually something called a 'redirect'?

Thanks in advance for any help,

- Steve

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07-10-2011 05:31 AM  6 years agoPost 19
rbort

rrProfessor

Franklin, MA - USA

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You're right

Cut the opening, get the stock rc shroud and cut a piece of it to make the redirect from the right side of the cylinder over to the left side.

Somewhere around here there was a picture of what to cut to make the redirect, if you search hopefully you'll find it.

-=>Raja.

MA 1005 H280, 4112 flts
Raptor 90 H300, 274 flts
Spectra 27 3DMax, 3187 flts
Whiplash V1 27 3DMax, 1418 flts
Whiplash V2 H300, 168 flts

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07-10-2011 06:23 AM  6 years agoPost 20
sps3172

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St. Louis, MO

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Thanks Raja!!

I found the pics (in this thread, actually).....I just wasn't sure what pieces to start with.

Thanks again!

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