Totally the wrong part... read the reply... It wont fit without VAST GREAT manipulation (different pinion, CUT SHAFT BY AN INCH, and redrill hole for shear pin) and NOWHERE in the add does it state what "Steve" said it does. What a bold face misleading lie, not even worth returning. Im more angry they wasted my time anyway.

I WILL NEVER BUY FROM HELI DIRECT AGAIN. IF IT IS GOING TO REQUIRE CUTTING, SHAVING, and REDRILLING THE SHEAR HOLE IT SHOULDNT BE SOLD AS "For the Stock Blade CP".

http://www.helidirect.com/product_in...oducts_id=1505

HDX300 Main Gear with Strong Steel Main Shaft for Stock Blade CP





Product Model HDX300-GSC
Availability
Price $14.99
Qty.
Buy Now




Description

These new blue main gear and strong steel main shaft set is designed to replace stock flex main gear and the weak stock main shaft. It is much better than stock main gear and much stronger than stock main shaft. The main shaft is drilled on top to use with stock plastic head. This also allows auto-rotation feature. The high strength plastic main gear comes with pre-assembled one-way clutch bearing. The new main gear is lighter and stronger than stock main gear even with the one way hub and one-way clutch bearing.

Part List

- 1 x Strong Stainless Steel Main Shaft
- 1 x High Strength Plastic Blue Auto-rotation Main Gear 137T
- 1 x Auto-rotation Sleeve
- 1 x Main Shaft Collar
- 1 x One-way clutch bearing
- set screws

Application

Use for these helicopters

- Blade CP
- Honey Bee CP2
- HDX300 helicopters

when installing the auto-rotation sleeve, make sure DO NOT PUSH them into the oneway bearing. It could damage the bearing. Twist it slightly and gently force it into the bearing. It will fit in perfectly.

if you got problem with the main shaft that cannot go through the auto rotation sleeve, use sand paper 600 to sand off the burrs on the shaft if there is any.

Features

- Strong steel main shaft reduces the chance of bending main shaft.
- High Strength plastic main gear 137T
- Very easy to maintenance and replacement
- Very strong and light weight
- Auto-rotation feature
- Great price for great products

Yea I got this gear as well for my CP PRO. Although you are right it is not built for a blade you can accually make it work without any modifications. Here is somethings I did to make it work:

The shaft is too long. What I did was make the shaft stick like a half inch or so bellow the gear. Be just having it go through the gear and stick out you can make it work with the appropriate pitch etc.

As for the top hole being too small I have found that a paper clip fits perfectly. So I just cut a peice of a paper clip and then bent it to hold it in there a bit better.

Only other issue I have run into is the shaft wanting to slide a little up and down because I can't fit that second collar above the gear and still get good gear connection. So I have it so it rides right next to a couple zip ties. When the shaft shifts it will hit the zip ties which push it back down. So far I have not had any issues with this, but I am sure it causes some excessive friction.

Overall I am not very pleased eather. I plan to do something else in the near future. I like the auto rotate, and I needed a new shaf (I bent my old one). And I am willing to live with it since it is working fine with these modifications.

Hope this helps, I am intrested to hear what others did.

The way I see it,when a person purchases an "upgrade/nonstock part " unless it comes from the heli mfg. that made the heli, one must be ready for some modification/adjustment to make it work.
If you wanted a "perfect "drop in you should have purchased stock parts,just my 2¢.
It's not that hard to make this work.Measure up from the top mast bearing on the stock shaft to the shear pin hole and transfer that to the new shaft to get the proper position,install the new upper retaining collor than install the shaft into the mast than gear and antirotation collor,mark the amount of shaft sticking out the bottom of the antirotation collor and trim. reassy. the mainshaft set your gear lash and your done.
parts setup is as follows---auto collor,gear---mast---steped collor with step to bearing,head
the lower tooth count will increase head speed some but not much

Yeah, I gotta say I was a bit disappointed w/ this one too. It's certainly not a direct replacement. Of course, lot's of folks have apparently made it work. I'm still going to give it a shot. Helidirect also sold me a Honeybee CP spindle claiming it was a replacement for the Blade, but it's not. Overall though, they have pretty good service and their upgrade landing gear is sweet. I've not given up on them yet.

Hellihobby's silver dual tail rotor mount didn't fit without modification.....so I suppose no vendor's upgrades are perfect.

I dunno...maybe figuring it out is all part of the fun.

I've not had any problem with this shaft and gear by just letting the shaft protrude from the bottom of the auto rotation bearing about 7mm.

However, DON'T BUY THE HDX300 CNC HEAD from helidirect!!!!! The main hub does not fit the stock shaft or even their hdx300 shaft. It fits too loosely, so you can't get it on perfectly straight. This means you will always have a wicked wobble.

Ohyeah, when you mention to them that it doesn't fit the shaft, they stop replying to your messages [&o] I'm DONE with helidirect...

ct,

that's interesting. I was sort of PO'd w/ helidirect initially, but decided to just let it go.

Im thinkin its worth the wait for Horizon to release their CNC head and all the parts. At least we know its gonna be made to fit the CP and not ""fit the CP with only minimal cutting ,blowtorches and industrial welder""

Maybe if Helidirect starts getting blasted on forums like this 1 theyll have to do something or suffer the losses in sales. One can always dream

After these horror stories, looks like I'm switching online retailers... . Any more suggestions?

My point is that the ad said for the STOCK BLADE CP, said nothing about having to modify... and when I complained a bit they said to RTFM... I dont mind modding when I expect it... but this was a little too much when the ad makes it sound like it should be plug and play...

Thanks for the tips about the paper clip and such, I will have to do some tinkering with the head speed... sure love the thought of stronger shaft and autorotation...

Also in fairness, it was shipped correctly and very quickly... would have been madly happy if it was what I was expecting.

Im not against HD and am very pleased with the quick shipment but did feel shafted enough to comment. So if they ahve been good to you in the past maybe just a quirk... Dont want to slam a guy maiking a living for a quirky error.... but this ad was clearly not anywhere near as descriptive as it should have been and saying move the pinion closer (and RTFM) does not address excessive amp draw with fewer teeth.

Thats what I've been saying for awhile. Helidirect misleads us by saying things like "drop in replacement", "made for the BCP", etc. I don't buy from them unless noone else has it.

If they would just tell the truth that the part needs to be modified that would be no problem. Thats what we do! Modify stuff.

Oh ya! Strong steel shaft my *****! That thing is like a wet noodle. At least you can bend it back into shape without removing anything. Just grab it and apply a little pressure in the opposite direction of the bend. I want to see the engineering data that shows that this shaft is stronger than the stock one. I won't hold my breathe though - I'd wager that there was never any testing done to support this claim. Its all bull!

just thought I would update you....I live at altitude so planes/helis are a bit harder to get lift in general. There is something I realized about the auto rotation gear which took me a while to figure out (only because I am n00b). Because there are more teeth on the main gear you can't get nearly as much head speed. Since I live at altitude this is such a problem that you can't even get the heli to hover abover eye level. It took me a long time to figure this out since I don't typicly fly that high anyways yet. I will be switch back to a stock gear this weekend to get that extra headspeed. I want the ability to auto rotate, so I may do the modification as stated on blade cp repair's website. Just thought I would let others know that you do lose quite a bit of headspeed with this gear, and if you live in a place like where I do this may make it become a pretty poor flyer.

Why not try an 11 or 12 tooth pinion gear?

Hey Jent did you do the belt drive mod on your CP?? I was wondering what the cost is and the ease of repair in the event of a crash.

I thought that HDX gear had 137 teeth (mine does) while the stock one has 140. That should increase headspeed (minutely).

Humm...well then something else must be causing my loss of power. I had a spare main motor so I replaced it to see if it would help. The new motor did help, but not much. Still not flying like it used to.

I replaced the blades when I put on the new gear. The new blades are from heli direct and they are not as wide as the old ones. Could this be causing it?

The new blades since then have been nicked pretty bad (radio glitch and the heli throttled up and the blades hit a box a couple times). Could this be increasing the drag which is making the headspeed go down?

Could the fewer teeth on the HDX gear cause such a loss of torque that when the pitch increases it loses head speed?

You can hear a DEFINATE loss of head speed when the pitch increases, I don't rember if it sounded like that before or not.

Ideas on anything I should check before I replace the gear?

Walleye, I agree with you on helidirect. They are very good at misleading people and send out half assed products. I spent money on their BCP belt drive kit with tail case and it was very low quality. The tail belt pully mounted on the main shaft is actually not drilled at 90 degrees! This makes the pully wobble. Many reports of this, no word from Steve on RCGroups. The kit was thrown together with mostly shogun parts and presented as a new helicopter. The only original piece is the frame and I believe this was aquired from subcontractor JappaUSA company (Sonix name).

The message here, don't buy from HD if you don't know what you're getting or it's one of their "exclusive" parts. I agree though, they do ship quickly.

Jent, I have the same autorotation gear and main shaft from helidirect. If there is only a 3 tooth difference in size from the original gear then the difference in torque/headspeed is only about 2% and should be undetectable. Something you need to check is the motor's pinion mesh with the new gear. You definitely need to move your motor after installing the gear to accomidate the different pitch of the gears. You may have too tight of a mesh now which is causing your motor to bog. The motor should actually be more efficient now because when you slow down the autorotation gear allows the blades to continue spinning with no torque generated by the motor thus saving a small amount of energy. I've used HD's BCP blades and even though they aren't the same shape as the stock blades the difference will not be that drastic. Good luck getting it to work and let us know how it goes.

The HD shaft that came with the main gear is too long and hole at top too small for the stock shear pin, but as others have said, its not an issue with pin made from paper clip or safety pin. it can stick out of bottom with no issues. However, their replacment shafts are the correct size and they come with a shear pin

Jent, if your wooden blades are dinged up, that could be an issue. I discovered that with dinged symmetrical woodies from HD, required about 12 degrees pitch for decent climbout. I purchased their carbon fiber blades and they work great with only 9-10 degrees pitch. The Eflite carbon blades will probably work just as well.

bump

I just want to clarify with everyone that for the main gear and shaft, we stated that is is for blade CP, not a "drop in repalcement". What you need to do is to move the shaft and let it postruded out of the main gear a little bit.

I also stated very clear that the main gear is 137T.

I will add the descriptions more clearly that it needs modifications.

Shuohan,

If your main pulley is not 90 degree straight, please contact us via helpdesk to get the RMA and we will send you a new replacement.

Steve

Ive seen a couple guys on here stating that they couldnt get support when they contacted HeliDirect. Maybe the guy replying to emails fell asleep?? You should look in on him and make sure hes OK

Lets not spew generic complaints or rumor... my complaint was directed.

The item order page states " HDX300 Main Gear with Strong Steel Main Shaft for Stock Blade CP "

Nothing in the description said anything about not a drop in... with it stating " HDX300 Main Gear with Strong Steel Main Shaft for Stock Blade CP " I dont expect to have to modify it.

Now, Helidirect has offered to change the description, and refund my money if needed (BEFORE WHAT WAS STATED IN THE HD POST ABOVE). I thought the first reply to the support request I made was a little crappy but since then he has taken reasonable measures to fix. I personally wont shop there again but would hate to see any more blanket accusations...

The guy has taken the time to post here, lets not cause any undue havok on their business. HD although I had little appreciation for the read the description comment, I am now satisfied and consider this handled. If anyone wants to complain further please start your own thread.

It's nice to see that Steve has time to post in the forums, but I still am waiting for a reply to my support question about the HDX300 head. He has been totally ignoring me for about 3 weeks now. Helidirect is a joke. I will never spend another dime there...

I have changed the description with instructions:

Instruction:

- Align the top hole first to the stock head pin position.
- Let the extra length of the main shaft sticking out under the main gear or use dremel to cut off the extra length.
- Since the main gear is 137T, adjust the motor position toward the main gear about 1-2mm so that the motor pinion and main gear mesh with each other well.
- When installing the auto-rotation sleeve, make sure DO NOT PUSH them into the oneway bearing. It could damage the bearing. Twist it slightly and gently force it into the bearing. It will fit in perfectly.
- If you got problem with the main shaft that cannot go through the auto rotation sleeve, use sand paper 600 to sand off the burrs on the shaft if there is any.
- Apply loctite to the set screws on the auto-rotation sleeve.

ct420,

We have a few staffs to take care of the helpdesk tickets and emails. It may be the case that your email or ticket was overlooked or not received. If you don't get the answer in 2 days please resend another ticket or contact me directly here by PM me.

I try my best to get it work out for you.

Steve