What to run for a tail motor? - Page 2 - RCCanada - Canada Radio Controlled Hobby Forum
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Old 06-09-2007, 09:36 AM   #11
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Originally Posted by Credence
Belts stretch over time, cause static build up, wear out, etc. Not true with gear drives .
Gear drives fail catastrophically whereas belt drives usually give you some warning.

Just last night I was reminded how nice belt drive is - I was out blasting my HDX450 around and the wind suddenly went from zero to 100 (courtesty of the remnants of the storm that passed through yesterday) and it was one of those "holy crap I need to land NOW!" moments. I stopped and quickly set it down exactly where it was at that moment in time.

The grass in the area was a bit long and I heard the belt skip a few cogs as I set it onto the skids rather aggressively and the tail ate some grass and dirt.

However, a quick cleanup and inspection, and it's no worse for wear.

I know if I had a gear drive tail (at least in the micro size I fly) I would quite likely have been replacing gears, and perhaps a tail drive shaft.

Same thing for inflight failures - if you do a hard piro and strip a gear in flight it's not likely to be pretty. However, a belt might just skip a cog or two.

Anyhow, all that aside, wouldn't it be a better financial decision to move onto a bigger and better heli rather then investing alot of money converting what you have?

I've seen plenty of people invest more in a submicro/micro adding bling $100 at a time then it would have cost to just go out and upgrade to a much better bird outright.

I know I spent quite a bit on a Honeybee King I used to have before I realized that I was much better off simply buying up instead of upgrading.

Just my $0.02.
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Old 06-09-2007, 10:19 AM   #12
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You are perfectly right, it is better to upgrade to a belt driven instead of adding bling to a BCP.

However, I feel that upgrading a BCPP to brushless and dual tail is not adding bling. Adding bling is to add things that will not improve the performance while costing a lot of money and sometimes adding a lot of weight.

In my case, it cost maybe 60$ to add a brusless motor because I already had the speed control, and I spent 12 dollars to add the dual tail since I have access to a CNC and I can program in 2D G-Code. I only needed to buy a small brushed ESC. Even if I had to dish out the 30$ needed to buy the dual tail housing, I would have spent about 100$ to improve a nice little bird and make it a lot more reliable and with better performance.

I will buy a T-Rex in the near future, and I don't plan to add more upgrades to the BCPP, but I feel my relatively small investment allowed me to make the BCPP into a very nice indoor heli, and it will become the backup machine once I buy the T-Rex. It also served me well while I learned to fly RC helicopters.
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Old 06-09-2007, 10:46 AM   #13
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I'm not trying to show any disrespect towards the CP (I started with a Honeybee CP2 with the same tail motor) but I just wanted to get my point out there that sometimes people loose control on trying to get blood from a stone.

Our local heli shop guy has plenty of stories to tell about people with >$600 Blade CP's whereas you could have bought something much more capable and advanced out of the box for less.

I almost bought a full aluminum head for my Honeybee before I stepped back and realized that I was about to make a bad decision. I ended up investing in my current heli which came with a full aluminum head (and tail, and almost everything else) right out of the box.

Looking back I wish I had made this decision alot earlier as I spent alot of money fixing silly little parts on the King that wore out or broke far too easily due to the nature of the heli.

That said, if you can fix the tailmotor woes on your heli for a reasonable price then that's not a bad decision and as you said you'll still have it to blast around with once you do upgrade - although I think once you get something more advanced you'll quickly find yourself bored of the CX.
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Old 06-09-2007, 03:11 PM   #14
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Guys thanks again for all your input. I do not want to sink any more money in this little bird than I have to to get it to fly right. I do have a mini titan that I am working on. I just would like something for the days I want to fly something else.
My wallet is alot lighter since getting into Helis as a hobby
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Old 06-09-2007, 03:24 PM   #15
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Yeah, that's why I said gear drives are crap on micro helis. Belt is absolutely the way to go on the minis. The gears on the small helis strip if you sneeze on them. Been there, done that, no thanks!

On my larger machines, I've never managed to damage a gear. I've never actually crashed them, but i've had...rough landings (any landing where the model lands in one piece, is a good landing though, right??) .

You'll notice most of the high performance 3D models on the market use a torque tube drive for the tail rather than the belt because of my previous mentioned reasons.

I believe Align just came out with a torque tube conversion kit for the T-rex 600 too. Might have to look into getting that!
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