Twister CP Gold motor - quick shout to Elite Models

[adeacon]

Quick thanks to the guys at Elite models in Kent, especially Rod - CP Gold motor failed after 4 flights (a few people seem to have had this issue) - being replaced with minimal hassle (and only have to send the motor not the whole bloomin heli).

Will stick with it as it's ideal for hovering in the back garden in still weather - just hope the new motor holds up better than the last one.

Andy

[heliTV]

Hi Andy

Worth going for a brushless upgrade if you get a chance - much better....

That said, let us know how you get on with the new motor...

[adeacon]

hmmmm

any bargain brushless upgrades out there - budget-RC or similar? Saw the thread about someone putting the twister 3D storm motor and ESC in the CP gold - but looks like that costs about 50 quid?

Andy

[congoharrison]

I had dramas with my supplier and he didn't want to replace the motor, even though it failed only after a few hours of gentle flight.

After trying another brushed motor and three brushless types, I finally found a cheap brushless motor and 30a brushless controller (cheap chinese one) that had a high enough rpm to get the heli off the ground, unfortunately I do not know the KV rating of that motor, as it was supplied without documentation from another local supplier. Suffice to say that the brushless solution was much better than the stock motor, more power, longer flights, no overheat issues.

Advice, you'll need a brushless with very high rpm to match the main gear of the Twister CP Gold. I used the same pinion that was on the original motor, a 9 pin pinion I believe, as other pinions didn't perfectly match the main gear.

BTW, this afternoon I fried my fourth CP Gold Transmitter which I just got today!
I think I isolated why they are failing. I was doing a pre-flight check with the antenna down, then I had a visitor for an hour, then I watched television for an hour, then, when I returned to finish the preflight and I noticed I had left the antenna down with the power turned ON the Tx.

My heart sank, I tested the Tx and heli, and the Tx was glitching and failed, exhibiting the same symptoms of failure as my previous three transmitters.

All three of my previous Twister CP Gold Tx's had been used extensively with the antenna down for PC simulation, so it would seem logical that the Tx's can't handle long periods of power ON with the antenna down, though I cannot prove this other than what I have experienced, so be warned!

[heliTV]

I had dramas with my supplier and he didn't want to replace the motor, even though it failed only after a few hours of gentle flight.

After trying another brushed motor and three brushless types, I finally found a cheap brushless motor and brushless controller (cheap chinese one) that had a high enough rpm to get the heli off the ground, unfortunately I do not know the KV rating of that motor, as it was supllied without documentation from another local supplier. Suffice to say that the brushless solution was much better than the stock motor, plenty of power, longer flights, no overheat issues.

Advice, you'll need a brushless with very high rpm to match the main gear of the Twister CP Gold. I used the same pinion that was on the original motor, a 9 pin pinion I belive, as other pinions didn't perfectly match the main gear.

BTW, this afternoon I fried my fourth CP Gold Transmitter which I just got today!
I think I isolated why they are failing. I was doing a pre-flight check with the antenna down, then I had a visitor for an hour, then I watched television for an hour, then, when I returned to finish the preflight and I noticed I had left the antenna down with the power turned ON the Tx.

My heart sank, I tested the Tx and heli, and the Tx was glitching and failed, exhibiting the same symptoms of failure as my previous three transmitters.

All three of my previous Twister CP Gold Tx's had been used extensively with the antenna down for PC simulation, so it would seem logical that the Tx's can't handle long periods of power ON with the antenna down, though I cannot prove this other than what I have experienced, so be warned!

Wow - wasn't aware of the transmitter problem...

We've had some dramas with Josh's (my son's) CP Gold... after a brushless upgrade - Steve (Xygax) used the Twister Storm motor and an 18A controller all appeared to be good for a few weeks. then on Friday, the controller burned out in a puff of smoke causing a crash.
I replaced it with a 25A controller yesterday so hopefully it will work better now. Haven't had a chance to test.

It's such a pity as fundamentally the CP Gold is a nice little heli BUT

1. The stock brushed motor is useless - Josh's failed after 4 short hovering flights. It would be nice if J Perkins (UK distributor) would offer a discounted brushless upgrade instead of replacement motors. After all, they have the parts for the Twister Storm...

2. The twister spares seem a bit geared to making money - generally feathering shafts always bend in a crash. The replacement cost is 10UKP because you can't just buy the shaft - you have to buy the head block with it... for example, you can get 2 Blade 400 feathering shafts for a couple of quid - I should know I've replaced loads!!

3. The transnmitter programming is a bit fiddly and there's no proper manual for it so its a bit hit and miss...

If J Perkins could sort these things out, it would be a fantastic first CP heli...

Just my 2p's worth

Graham

[Mojogoes]

heliTV apparently the t3ds motor draws 20a so no wonder it blow but should be ok now , just of topic here but hands up those who have used a 30a or 35a on a storm.

[CBXMartin]

Hi,

I have replaced my original CP Gold brushless motor with an Esky EK5-0005, 3900K/V motor plus 10 tooth pinion, this works well - gives a similar head speed to the original motor and is a bit cheaper that the T3D motor.

It is also available as a motor/ESC combo Pt. No EK5-0081. If you order one check that the pinion is included, some suppliers sell it separately (the original CP Gold pinion won't fit due to the Esky motor having a larger shaft diameter).

Regards,

Martin.

[CBXMartin]

Re the Transmitter problem - A tip when using a 35MHz non sysnthesised TX with a simulator is to remove the crystal. This effectively disables the radio frequency output - the batteries will last longer and the risk of stressing the RF output stage, due to the retracted aerial causing incorrect loading, should be eliminated.

[cjcj1949]

I've not heard of a problem with using a 35Mhz tx with the aerial down. You are meant do that for the range check. I've used txs since 1980. If there is a problem then it's a design or assembly fault.

Chris

[SRH990]

I've not heard of a problem with using a 35Mhz tx with the aerial down. You are meant do that for the range check. I've used txs since 1980. If there is a problem then it's a design or assembly fault.

Chris

I've heard of this being a problem a few years ago with Futaba gear, old Challenger sets I think.

You would have thought that using the TX on a sim would disable the RF output when the lead is connected, certainly works this way on JR & Futaba athough it may well be due to the budget design of the TX's with the Blade CP et-al, taking the crystal out is a good solution though.

[CBXMartin]

Steve, you are correct in that connecting the SIM cable to the Twister Gold TX does switch on the transmitter with the RF output disabled, so long as the power switch is in the off position. So no need to remove the crystal after all.

Had I thought about it I'd have realised that this has to be the case, otherwise it would not be possible to use the TX as student slave with a buddy box connection.

[TomBCR]

so are we saying then that the crystals and burning out or the whole tx whilst using sims with the antenna down?

im getting uncontrolable servo movement when trying to use my cp gold, so i think i am another victim of this problem i dont know what to try first to try and fix the problem? can you guys point me in the right direction!

cbxmartin - is this a straight engine conversion swap then mate? everything connects to one another as im looking to upgrade mine! can you use the cp gold batteries or have you got to use ones from another manufacture!

cheers guys!

[davidhoy]

sent my cp gold back to perkins last NOVEMBER with motor issues.its now feb and still waiting for its return
perkins has lost a customer
their after sales service is a joke

[Bugster]

... It is also available as a motor/ESC combo Pt. No EK5-0081....

I bought one of these despite seeing bad reviews about quality in various places. The motor is fine but the esc is randomly good/bad. Mine didn't work out of the box and close examination revealed the signal wire was loose and had been dry soldered. I replaced it with a scorpion 35amp esc and it's worked fine since.

[TomBCR]

I bought one of these despite seeing bad reviews about quality in various places. The motor is fine but the esc is randomly good/bad. Mine didn't work out of the box and close examination revealed the signal wire was loose and had been dry soldered. I replaced it with a scorpion 35amp esc and it's worked fine since.

so can you use the cp gold batteries and stuff then with different esc's??