Jan's frame stiffeners

[swalko]

I contacted Jan with questions about frame stiffeners and here there are:

http://www.henseleit-helicopters.de/...oducts_id=1313

Part number RI-0203. These was added to Jan's shop today, i dont know how these looks, but i ordered one set. When Jan's stiffeners arrive i will post photos.

[mkovalcson]

Jan said he was going to start adding a few things to support more powerful powerplants.

I expect we will see a new high temperature main gear at some point too.

I wonder if he will evern go so far as to start offering "bling"

[helicraze]

If they are the carbon side ones i dont think they work too well

[zmooth]

Yea, not the easiest thing in the world to install or adjust the mesh afterwards.
I replaced the double washers with those metal shims most tail blades come with, bit easier to install as they're one-piece.
They do seem to work though, not a single mark on any of the 45xx since I tried them on.

[swalko]

Originally Posted by zmooth

Yea, not the easiest thing in the world to install or adjust the mesh afterwards.
I replaced the double washers with those metal shims most tail blades come with, bit easier to install as its one-piece.

At first you may install motor and adjust mesh without stiffeners. After that you unscrew screws on one side and install one stiffener. Repeat same process for second stiffener.

Originally Posted by zmooth

They do seem to work though, not a single mark on any of the 45xx since I tried them on.

Great.

[Redlight11]

I received Jan's stiffeners in my kit but decided to go with Mick's frame brace instead. Well I was going to use both but the holes for the brace would have been blocked by the washers for the Henseleit stiffeners . Mick's brace works great, no marks on my 4530.

[AcidDrink]

Hmm, no picture. I think I need these though, thanks for the info.

[ZuvieleTeile]

Originally Posted by Redlight11

I received Jan's stiffeners in my kit but decided to go with Mick's frame brace instead. Well I was going to use both but the holes for the brace would have been blocked by the Henseleit stiffeners washer. Mick's brace works great, no marks on my 4530.

C'mon Rdlight, we need pics. . .

[swalko]

Originally Posted by ZuvieleTeile

C'mon Rdlight, we need pics. . .

Pictures are from other thread / s.

[ZuvieleTeile]

Hhmm,
I think, from a constructional standpoint, the crossbrace from Mick or something like it in general is a better solution imho.

[DT75]

Heli-innovations.de sells a CF X-brace "kit". Never ordered from them, so I dont know their shipping policy...

http://www.heli-innovations.de/

[Redlight11]

Originally Posted by ZuvieleTeile

C'mon Rdlight, we need pics. . .

Sorry but Im at work. I will snap some pics this afternoon.

[ZuvieleTeile]

[QUOTE=Dumbthumb75;3683825]Heli-innovations.de sells a CF X-brace "kit". Never ordered from them, so I dont know their shipping policy... [QUOTE]

I looked at those. Not bad, but lots of work. Gluing the stuff together, gluing in the nuts.
Too imprecise for my taste.
If we could "wake up" Mick, that would be great. . .

[Chris_M]

I have some extra 700E? standoffs that were about a mm or so too long for the upper frames that I just dremeled down and used. Doesnt look as fancy but gets the job done without taking up much room.

[Egroeg]

It seems to me that the stiffeners made by Jan are not bad actually.
They are alike to the ones on the xxtreme.
The idea being in that when you have 2 carbon sheets which are pressed together and held eith bolts but with a spacer In between , the whole construction is not liable to bending .
So it stiffens the side while adding little weight.
The ones in alu cnc are for keeping the frame from slanting, they look nice yes, but add weight.
For a pure race Heli like Rigid TDR 90 the carbon ones (the ones from JAN) I like very much.

[Redlight11]

Originally Posted by Egroeg

It seems to me that the stiffeners made by Jan are not bad actually.
They are alike to the ones on the xxtreme.
The idea being in that when you have 2 carbon sheets which are pressed together and held eith bolts but with a spacer In between , the whole construction is not liable to bending .
So it stiffens the side while adding little weight.
The ones in alu cnc are for keeping the frame from slanting, they look nice yes, but add weight.
For a pure race Heli like Rigid TDR 90 the carbon ones (the ones from JAN) I like very much.

I don't know the weight difference but it can't be much. Im not gonna take out the brace to weigh it but the carbon stiffeners are quite large and have a quite a few thick washers. I would not be surprised if Jan's weighed a bit more than the brace. This is just a guess though.

EDIT: I am not throwing off on Jan's stiffeners. They look great and Im sure they function as intended . After all it is a genuine Henseleit part, so you know it is top notch quality.

EDIT 2: Jans stiffeners do in fact weigh more than Micks brace. But we are talking grams here so no big deal.

[DT75]

Not much added weight by the Micktech brace, I think...

[Redlight11]

Originally Posted by Dumbthumb75

Not much added weight by the Micktech brace, I think...

Thanks for posting that!I will put Jan's stiffners on the scale when I get home for comparison.

[belgoheli]

I have been using Jan´s stiffeners successfully since August last year on my second TDR with Scorpion 4525LE
I must admit that I have increased the distance between the main upper carbon frame and Jan´s stiffeners up to 5 mm using aluminium bushings. In this way the stiffness of the ¨sandwhich construction¨ is increased significantly

Grtz

Belgoheli

[mkovalcson]

Originally Posted by belgoheli

I have been using Jan´s stiffeners successfully since August last year on my second TDR with Scorpion 4525LE
I must admit that I have increased the distance between the main upper carbon frame and Jan´s stiffeners up to 5 mm using aluminium bushings. In this way the stiffness of the ¨sandwhich construction¨ is increased significantly

Grtz

Belgoheli

That's a great idea. The closer the two are together, the more they act like a single sheet. A little more distance between them adds rigidity through the geometry without requiring much additional weight. I'm curious what the rigidity multiplier would be for that modification.