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sujju · 11-24-2009, 01:56 PM

has anyone tried a gaui motor on a trex 250.. i have a spare and would like to know if this is compatible with the trex 250

nexgen · 11-24-2009, 04:48 PM

dont see why not

flerpie · 11-24-2009, 07:52 PM

The pinion may be different - look closely at the gear teeth spacing.
The mod .4 versus mod .5 thing mentioned in another thread in this forum.
I was talking to a buddy today about his T250 and he noted my gaui
drive gear had smaller teeth.

sujju · 11-24-2009, 11:29 PM

thanks.. will chack this our and will post if the find

sujju · 11-24-2009, 11:30 PM

Quote:

Originally Posted by sujju

thanks.. will chack this our and will post if the find

hurried typing... will check this out and will post the find

flerpie · 11-25-2009, 12:15 AM

Worst case - get a different pinion.

kid_spl85 · 11-25-2009, 12:19 AM

gear mesh will be off as trex has .5 and gaui uses .4

markh78 · 11-25-2009, 01:56 AM

Quote:

Originally Posted by kid_spl85

gear mesh will be off as trex has .5 and gaui uses .4

I think it's mod .4 on T-Rex and its clones:
http://www.readyheli.com/H25048_Alig...m_p/h25048.htm
I'm planning to put my spare 5600kv into HK250GT, which should be here by this weekend.

sujju · 11-25-2009, 03:14 AM

Quote:

Originally Posted by markh78

I think it's mod .4 on T-Rex and its clones:
http://www.readyheli.com/H25048_Alig...m_p/h25048.htm
I'm planning to put my spare 5600kv into HK250GT, which should be here by this weekend.

which servos are you planning to use on the HK250GT and is this heli good, espcially the tail? i cant get my 250 to stop wagging on even with a gain setting of 53 on my dx7

markh78 · 11-25-2009, 07:36 AM

HXT900 for cyclic and MKS DS480 for rudder.
I'm keeping the parts cheap so I can use the 250 clone as stick-banging heli, and keep my EP200 nice in tact.

nexgen · 11-28-2009, 03:15 PM

regarding mod.5 vs mod.4:

the gaui motor has a 2.3mm shaft, and the good news is that there are lots of .5mod pinion sizes out there for a 2.3mm shaft size. you ahould have no trouble finding the tooth count you need.

markh78 · 11-28-2009, 09:42 PM

I've spent good part of yesterday fitting parts into HK250GT.
10T pinion from Gaui (parts 901021) fit the setup pretty nicely, however I needed to do some mod to mount the Gaui motor.
I've shortend the motor shaft by around 2mm since it was touching the servo, and widen the motor mount screw holes tiny bit.
I have to say that T-rex type frame isn't as nice to work with as EP200EX frame, it kinda feels little claustrophobic in fitting all the parts.

11-24-2009, 01:56 PM	#1 (permalink)
sujju Registered Users My HF Map location Join Date: Apr 2009	Gaui motor on the trex 250 has anyone tried a gaui motor on a trex 250.. i have a spare and would like to know if this is compatible with the trex 250

11-24-2009, 04:48 PM	#2 (permalink)
nexgen Registered Users My HF Map location Join Date: May 2008	dont see why not __________________ *Gaui 200 •Gaui 550 •Gaui X5* *BeastX Castle Scorpion Hyperion Spektrum JR* The Front Porch, Nexgens Lounge

11-24-2009, 07:52 PM	#3 (permalink)
flerpie Registered Users Join Date: Jun 2009	The pinion may be different - look closely at the gear teeth spacing. The mod .4 versus mod .5 thing mentioned in another thread in this forum. I was talking to a buddy today about his T250 and he noted my gaui drive gear had smaller teeth. __________________ HK Best Of Custom 450s & 500 Build Different!

11-25-2009, 12:15 AM	#6 (permalink)
flerpie Registered Users Join Date: Jun 2009	Worst case - get a different pinion. __________________ HK Best Of Custom 450s & 500 Build Different!

11-25-2009, 12:19 AM	#7 (permalink)
kid_spl85 Registered Users Join Date: Jul 2009	gear mesh will be off as trex has .5 and gaui uses .4 __________________ GAUI EP200 V2 EX,RD631, GAUI18AMP ESC, MDS60HB, GP750+TGY1800a, TURNIGY 1000maH 30C, GAUI-5600KV 15T. ALIGN 450 SPORT,ALIGN35AMP ESC, 450M@14T, GP780+MKS8910, 410M, RHINO 2350mah 25C, TIG CF MAIN, 5A BEC

11-24-2009, 11:29 PM	#4 (permalink)
sujju Registered Users Thread Starter My HF Map location Join Date: Apr 2009	thanks.. will chack this our and will post if the find

11-25-2009, 07:36 AM	#10 (permalink)
markh78 Registered Users Join Date: Oct 2009	HXT900 for cyclic and MKS DS480 for rudder. I'm keeping the parts cheap so I can use the 250 clone as stick-banging heli, and keep my EP200 nice in tact.

11-28-2009, 03:15 PM	#11 (permalink)
nexgen Registered Users My HF Map location Join Date: May 2008	regarding mod.5 vs mod.4: the gaui motor has a 2.3mm shaft, and the good news is that there are lots of .5mod pinion sizes out there for a 2.3mm shaft size. you ahould have no trouble finding the tooth count you need. __________________ *Gaui 200 •Gaui 550 •Gaui X5* *BeastX Castle Scorpion Hyperion Spektrum JR* The Front Porch, Nexgens Lounge

11-28-2009, 09:42 PM	#12 (permalink)
markh78 Registered Users Join Date: Oct 2009	I've spent good part of yesterday fitting parts into HK250GT. 10T pinion from Gaui (parts 901021) fit the setup pretty nicely, however I needed to do some mod to mount the Gaui motor. I've shortend the motor shaft by around 2mm since it was touching the servo, and widen the motor mount screw holes tiny bit. I have to say that T-rex type frame isn't as nice to work with as EP200EX frame, it kinda feels little claustrophobic in fitting all the parts.

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