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T-REX 250 › S9257 VS 290G for the 250
04-03-2009 03:08 AM  9 years agoPost 1
knightofcarnage

rrElite Veteran

chicago

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which servo performs better on the 250. I have both at my disposal , current i'm using the 290g and it seems hold ok most of the times. So i was wonder if i should use a 9257.

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04-03-2009 03:41 AM  9 years agoPost 2
Gyronut

rrProfessor

Martinsville In.

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Well the 57 would certainly get the job done.

I currently fly the 90 and it performs alright, certainly better than the 3153 I had on there.

Judge them for yourself.

Rick

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04-03-2009 11:46 AM  9 years agoPost 3
gixxerjeff

rrNovice

Prospect Park,New Jersey

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9257 hands down.Ive tried them both,the 290 would allow the tail to blow out if you mishandled the collective.The 9257 just holds way tighter.....

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04-03-2009 01:03 PM  9 years agoPost 4
Schuster_Helis

rrVeteran

Moscow Mills, MO.

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9257
+1

Way better than the 290.

For the first time I can do some pretty big tail slides without the heli doing a piro at the end...

Jim
Team ME, Team Helidirect, Pulse LiPo, Scorpion ESC

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04-03-2009 02:46 PM  9 years agoPost 5
knightofcarnage

rrElite Veteran

chicago

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Ok i'm sold. Now can someone tell me how they modified the linkage to work with the 9257.

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04-03-2009 05:37 PM  9 years agoPost 6
caseyjholmes

rrElite Veteran

Portland, Oregon

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I like the 290G.
No blowouts with it unless I go too fast backwards with no input.
It held without wagging in a 10-15mph breeze with gusts hitting the tail from the side.

I think I could blow out the 9257 doing the same thing backwards no input. The heli tail can't handle too much being so small and short.
The blades have lots of surface area and a wide chord for the tail to fight too.

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04-03-2009 05:41 PM  9 years agoPost 7
Darren Lee

rrElite Veteran

Woodstock, GA

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I think I could blow out the 9257 doing the same thing backwards no input.
I have a Futaba GY520/9257 and have been unable to blow the tail out. I have tried, trust me.

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04-03-2009 05:45 PM  9 years agoPost 8
caseyjholmes

rrElite Veteran

Portland, Oregon

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I find it hard to believe.. But I suppose it's possible.

At some point, wind will overcome the tail on ALL helicopters.
This heli can move faster than it's tail can hold backwards I believe. (under the right no input conditions)

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04-03-2009 07:36 PM  9 years agoPost 9
helinelly

rrVeteran

st.helens england

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+1 s9257 gy 401

if it broken.....glue the bast#$d...keep flying..i tell the wife my crashes cost £20! works for me

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04-03-2009 07:40 PM  9 years agoPost 10
gixxerjeff

rrNovice

Prospect Park,New Jersey

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[quote]Ok i'm sold. Now can someone tell me how they modified the linkage to work with the 9257.
2 options, #1,just cut 1/2 the threads off each end of the stock rod to shorten it up so your servo mount doesnt run into the boom block.#2,make a custom CF rod from some 3mm CF tube.Cut your stock rod,maybe an inch off each end and epoxy them into the CF tube that was cut to size to keep the servo mount maybe 1/8th inch from the boom block.With the CF rod you dont use the stock rod guides,no need,its stiff enough.....

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04-03-2009 08:46 PM  9 years agoPost 11
helinelly

rrVeteran

st.helens england

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i did this

and no there is no flex...holds sweet

if it broken.....glue the bast#$d...keep flying..i tell the wife my crashes cost £20! works for me

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04-04-2009 02:51 AM  9 years agoPost 12
knightofcarnage

rrElite Veteran

chicago

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I think i found my tail problem, i seen this before in a 450. The tail belt treads broken but belt it still in one piece. This causes inconsitent rpms on the tail.

beeflyer2 what gain to you have set on the 520, i'm curious what to aim for.

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04-04-2009 12:46 PM  9 years agoPost 13
Darren Lee

rrElite Veteran

Woodstock, GA

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beeflyer2 what gain to you have set on the 520, i'm curious what to aim for
Around 30-32%, slightly higher than I used to run with the Spartan.

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04-05-2009 08:03 PM  9 years agoPost 14
knightofcarnage

rrElite Veteran

chicago

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beeflyer2 can you post some pics or your tail. i have a similer setup.

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T-REX 250 › S9257 VS 290G for the 250
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