New Prôtos 700 pictures!

[desertstalker]

Originally Posted by mahbouni

I do think the tail shaft bearings look a little small

The outer race is not shown there, its inside the CF from the look of things. Bearings look ok to me...

[mahbouni]

Originally Posted by desertstalker

The outer race is not shown there, its inside the CF from the look of things. Bearings look ok to me...

You think the CF plates either side of the tail pulley are countersunk to fit a wider bearing than what you can actually see? You could be right as the bearing isn't flush with the outside of the plates. Then again there's not that much CF material around what you can see. Looking at the inside of the plate on the other side, it looks like a flange bearing. Hopefully we will have more pictures to clarify.

[trickybit]

Originally Posted by desertstalker

The outer race is not shown there, its inside the CF from the look of things. Bearings look ok to me...

I zoomed in and what I see is a bearing not as deep as the CF plate, and I think I see the outer race just fine. Agree that it's a flange bearing.

I don't think there's any reason to worry about the bearing. It looks like a Logo bearing.

[banditpowdercoat]

Im not worried about the bearings or the CF sideplate. Im really likin the open side tho. Loosen idler pulley off and can slide belt completely out of the tail without taking tail apart. Should make boom/belt changes a lot easier too!

[trickybit]

Originally Posted by banditpowdercoat

Im not worried about the bearings or the CF sideplate. Im really likin the open side tho. Loosen idler pulley off and can slide belt completely out of the tail without taking tail apart. Should make boom/belt changes a lot easier too!

I thought perhaps you may be hallucinating. But on inspection, you seem to be right. Makes me a little nervous, but I'd like to see how beefy the part is. I guess they run motorcycles with the rear wheel suspended from one side. That definitely is radical.

Now I want to go find a photo from the right side, to see if I can see how beefy it is.

Looks like one might have to remove the vert fin in order to get the pulley bolt out.. but still a nice feature.

[trickybit]

Photo of the right-hand side on facebook: http://www.facebook.com/pages/Tareq-...01255346637348

[puttekula]

As I see it there is a bearing on both sides of the pulley. Anything else isnt possible for this kind of application.

[banditpowdercoat]

Originally Posted by puttekula

As I see it there is a bearing on both sides of the pulley. Anything else isnt possible for this kind of application.

What are you talking about?

[trickybit]

If you look closely.... the tail pulley shaft is indeed supported, by a bearing in a thick CF plate. The CF plate is bolted to an aluminum chunk of the tail case. But note that this part of the tail case is not attached to the left side of the tail case, only the right.

So the belt can be removed without first removing the tail pulley shaft and pulley or taking the case apart.

It's not 100% clear that you can sneak the belt out from under the idler pulley without removing that pulley first, but again, it's directly bolted into a member only on the right side of the tail case, so it would be pretty easy.

Pretty innovative.

[mkovalcson]

I like the tail on this and think this will be a very unique 700 series heli.

So far it all looks really good.

Unfortunately I think my 130X, Protos 500, planned E5, and TDR seem like a well rounded fleet and I'm really not itchy to get anything in addition or to replace any of these in the near future.

I think I would be torn between a Protos 700 and a Diabolo if I were to add a new 700.

[drvic]

i still havent got answer ........does somebody know when are we going to get some of p700 on market ???

[th0rg0d]

Originally Posted by drvic

i still havent got answer ........does somebody know when are we going to get some of p700 on market ???

Later. Maybe this time next year.

[puttekula]

Originally Posted by trickybit

If you look closely.... the tail pulley shaft is indeed supported, by a bearing in a thick CF plate. The CF plate is bolted to an aluminum chunk of the tail case. But note that this part of the tail case is not attached to the left side of the tail case, only the right.

So the belt can be removed without first removing the tail pulley shaft and pulley or taking the case apart.

It's not 100% clear that you can sneak the belt out from under the idler pulley without removing that pulley first, but again, it's directly bolted into a member only on the right side of the tail case, so it would be pretty easy.

Pretty innovative.

Ahh, now I see what u mean. Innovative yes, but whats the benefit of it? Is it that necessary to be able to swap the belt without losening 2 screws? And risking a flexy construction for that?

[trickybit]

Originally Posted by puttekula

Ahh, now I see what u mean. Innovative yes, but whats the benefit of it? Is it that necessary to be able to swap the belt without losening 2 screws? And risking a flexy construction for that?

I doubt there will be flex in a big chunk of aluminum.

I like that you can get the tail all set up rolling smoothly, check the bearings, etc, and then slip on the belt.

Also, at the 700 size, with the tail servo on the boom, you could pop the tail off and throw the heli into a small car without much fuss.

[mahbouni]

Originally Posted by trickybit

Also, at the 700 size, with the tail servo on the boom, you could pop the tail off and throw the heli into a small car without much fuss.

Now there's an idea

[rossk]

I was just going to get a bigger car when I start with 700's, haha

[mkovalcson]

The TDR is actually designed to allow the boom to be unclamped and slide out.

Loosen two bolts and pop open the clevis pin attaching the tail rod to the tail servo arm and off it comes. In Europe where those itsy bitsy cars are more common this is an important feature

There are also the two struts to undo from the frame.

From the Henseleit website.

"For people who have not much space in their cars it is especially advantageous that the tail boom including the front pinion, the struts and the push rod can be removed from the helicopter within less than a minute. In order to do so, you only have to detach both struts as well as the push rod in the front area of the mechanics, loosen the two lower attachment screws of the tail boom holder and pull out the tail boom to the back. The tail boom is automatically fixed at the correct position in the front holder, so that it is always exactly aligned after having been pushed in. "

[andersn]

my friend has a tiny electric car called buddy (its the mfg)

it can fit a funcub and 700, but wing on funcub has to be taken off fits only 1 person then.

[trickybit]

Back to topic perhaps?

Sent On Fire

[Rob43]

I don't (yet) own a Protos, as asked my MrDan. I just can't see enough detail here to confirm what design features secure the pulley to the shaft. If that is where set screws are used, then, I would think it should be okay, since the hubs are also secured (typically) by a single set screw. I have had these wiggle loose, but were found from some altered tail behavior, and not a loss of tail control. I can understand your points though...just can't judge what it's integrity is from these pics. I expect that testing will prove it's validity or problem before we see them shipped. MSH doesn't seem to rush their models out too quickly. I bet they will release an excellent machine. I am mainly wondering about disk loading...the 500 is quite light. A lighter 700 would be another unique attribute for the class.