NEW - Four Axis Designs Mod 1 Maingear Review - No longer in production - HeliFreak
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Old 06-09-2009, 06:03 PM   #1 (permalink)
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Default NEW - Four Axis Designs Mod 1 Maingear Review - No longer in production

OK finally Miro's Mod 1 main gear is OUT! And he has a company with web site up now.
Four Axis Designs
www.fad-heli.com

I have had Kevin test this main gear and pinion for OVER a month now and let me tell you, he has really put it through the ringer. Don't believe me? Watch the review video
This gear is the BOMB seriously! If your having gear stripping problems with the stock system, this WILL solve it for you. See Miro's web site for the options in pinions etc.

Here is the review video. WARNING your going to see some Trex700 carnage in this one so put the kids to bed

Video Link -> REVIEW - Four Axis Designs Trex700 Mod 1 Maingear and Pinion (85 Megs)

Enjoy,
Bob
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Old 06-09-2009, 07:36 PM   #2 (permalink)
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Thanks for the article Bob. What's the weight of the mod 1 pinion/maingear in comparison to the stock units?
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Old 06-09-2009, 08:08 PM   #3 (permalink)
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Hmmm I don't know? I didn't think to weigh it. I will see if I can get Kevin to weigh his new one when it arrives.

Bob
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Old 06-09-2009, 09:00 PM   #4 (permalink)
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well shit...Bob and Kevin, you just sold me one...
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Old 06-09-2009, 10:33 PM   #5 (permalink)
 

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Just FYI

Yeah, we had a guy do the chicken dance here a couple weeks ago, completly stock 700 machine. The clutch bell broke the same way, in half and the main gear did not strip.

Carl
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Old 06-09-2009, 10:37 PM   #6 (permalink)
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Quote:
Originally Posted by Speedbmp1 View Post
Just FYI

Yeah, we had a guy do the chicken dance here a couple weeks ago, completly stock 700 machine. The clutch bell broke the same way, in half and the main gear did not strip.

Carl
Well I still ordered one ...I don't fly as hard as Kevin (and I stripped one out already, luckily practicing autos paid off) and the way he flys, dam...needless to say I not taking another chance.
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Old 06-10-2009, 06:41 PM   #7 (permalink)
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Hey Bob, what battery was Kevin running in that 700? (I know it's a 7.4, but what Mah?). And how many flights do you usually get?

I'm running a 5k Mah right now but looking to shead some weight...
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Old 06-11-2009, 10:25 AM   #8 (permalink)
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Pretty sure it is a 3700ma 2S pack but to be sure PM fireup and ask.

Bob
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Old 06-14-2009, 06:46 PM   #9 (permalink)
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Glad to say that the new gear also withstood full pitch at 100% throttle in the dragrace without stripping!
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Old 06-15-2009, 02:45 PM   #10 (permalink)
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I have been waiting a long time for Miro's Mod1 gear set.
I am using the microheli set at the moment but having watched Bob's video on the testing of these my order is placed will changing as soon as it arrives here in the UK.
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Old 06-16-2009, 08:59 AM   #11 (permalink)
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I think I'm going to wait for the 114 main gear so I can run a 8.14 ratio on my 700 w/ YS91SR w/ hatori 19 pipe and Kasama header.
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Old 06-18-2009, 10:40 AM   #12 (permalink)
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man maybe y'all should rename Kevin to FireDown.. since he crashes so much

that was funny though... there goes the tail... err Piroflip wtf.. /slam.. me that woulda been instant Thold when that tail hit.

buying the gear though!
Thanks Kevin for a true "torture test"
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Old 06-21-2009, 03:23 AM   #13 (permalink)
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My Mod 1 gear set arrived yesterday it took only four days to deliver to the UK.I must say IMO. the pinion gear is 100% better quality than microheli. Will be making the change over ready for next weekend .
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Old 06-21-2009, 09:08 PM   #14 (permalink)
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Quote:
Originally Posted by skigolfmike View Post
I think I'm going to wait for the 114 main gear so I can run a 8.14 ratio on my 700 w/ YS91SR w/ hatori 19 pipe and Kasama header.
The 8.07:1 works real good with that combo.
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Old 06-24-2009, 07:07 AM   #15 (permalink)
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Recieved the new gear set and line up tool awsome quality pieces.They arrived in four days no problem the shape of the gear teeth on both the pinion and main gears are dead solid perfect all the way around just the way they should be.This is a great value considering I paid almost this much for a cnc gear main gear alone for my Ergo 60 10 years ago!The clutch align tool is something I wish I had years ago should make the setup of gear lash a no brainer.Thank You Yogi
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Old 07-06-2009, 12:39 AM   #16 (permalink)
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Stripped my MicroHeli MOD 1.0 gear today (My fault not the gears) but hope the FAD pinion has a little bit better mesh. Ordered a complete gear and pinion set, also sent Miro an email asking for a 13T / 116T 8.92 ratio would be much better for us E conversion guys.

Actualy Miro you could cut down on the work and just give 6mm and 5mm motor shaft options with 2 set screws and foget the bottom treads on the pinion.

Lee
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Old 07-18-2009, 03:13 PM   #17 (permalink)
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What ratio of Mod 1 Gear and Pinion Set are to be used for OS91HZ and YS91?
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Old 07-22-2009, 01:27 PM   #18 (permalink)
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Hello,

I'm using the 91HZ with the stock ratio (115T with 14T Pinion), and it is working very well for me. Other people using the YS say that the engine has more torque, so they used a bigger pinion or smaller main gear.

If you use the 15T Pinion with the 114T Main Gear, which gives you 7.6:1 gear ratio, and you dont have to modify the axis distance between the pinion and main gear.
If that's too much, you can try different combinations, but you have to adjust the clutch block and engine position.

I attached a pdf that includes all possible gear ratios that we offer.
Thanks,
Miro Novy
Attached Files
File Type: pdf rev1_gear_ratio_table.pdf (21.2 KB, 291 views)
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Old 08-04-2009, 02:26 PM   #19 (permalink)
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So here's my question. If the mod 1 gear is stronger than the original do I really need to get the adjustable mesh setup if the mesh on my pre -1 maingear setup for my 700 was good? From what I understand the mesh between the new pinion and new gear should be roughly the same as the original without the adjustable mount correct? Just thinking that if I do ever decide to convert over to mod 1, I'd rather do it with the least amount of expense and hassle as I can. Don't get me wrong, having adjustability is nice, but just being able to bolt things up and have them work without having to deal with mesh is nice. (I've become lazy............)

Can anyone out there weigh their stock setup in comparison to the new mod 1 setup?
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Old 08-04-2009, 11:10 PM   #20 (permalink)
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Hi Kinder

Definetly if your gear mesh was fine before, it will be fine with the mod 1 gears. The Adjustable Kit is for people that had big problems with the mesh previously and were stripping gears every flight. So you'll be just fine without the adjustable kit.

I have a crappy weight, but here's what I got:

Stock Pinion ~ 18 grams (0.04 lb)
FAD Pinion ~ 28 grams (0.06 lb)

Stock Main Gear ~ 48 grams (0.11 lb)
FAD Main Gear ~ 80 grams (0.018 lb)

I'll make a better measurement with a digital weight at the shop tomorrow...
Thanks
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