What overall length 2.5mm (.098) wire drives would you like to see?

[T.S.Davis]

Tyler, you would not believe how much grief I get for forward mounting my motors.

[RaceMechaniX]

Terry, I can imagine.

Dmitry, the spacers are as you described 2.5mm ID, 1/4" OD and approximately 10mm long. They are placed every 6" inside the stuffing tubes.
There is a translation issue between the German and English definition of a clutch. What you have linked is the precision coupler, which I am very familiar with. Koppel verus Kupplung. I am not sure why Joe calls it a clutch.

Tyler

[dmitry100]

Tyler, Oh ok... I guess it's just me calling them couplers.

I actually only have 2.5mm ID / 4mm OD PTFE teflon that I was planning to place in only one place. My wire is actually 093 not 098.
But anyway, I was looking for 1/4 OD Teflon spacers all over the place and can't find anything like that... it would be a lot better.

Where can I buy those spacers from? Placing them every 6" sounds like a good idea.

[kfxguy]

Tyler, Oh ok... I guess it's just me calling them couplers.

I actually only have 2.5mm ID / 4mm OD PTFE teflon that I was planning to place in only one place. My wire is actually 093 not 098.
But anyway, I was looking for 1/4 OD Teflon spacers all over the place and can't find anything like that... it would be a lot better.

Where can I buy those spacers from? Placing them every 6" sounds like a good idea.

I cut mine out of brass tubing that slides inside the stuffing tube and then drill a small hole in the brass stuffing tube and solder it in through the hole you drilled.

[RaceMechaniX]

Tyler, Oh ok... I guess it's just me calling them couplers.

I actually only have 2.5mm ID / 4mm OD PTFE teflon that I was planning to place in only one place. My wire is actually 093 not 098.
But anyway, I was looking for 1/4 OD Teflon spacers all over the place and can't find anything like that... it would be a lot better.

Where can I buy those spacers from? Placing them every 6" sounds like a good idea.

Just the Teflon tube and cut it to length. Use a smaller piece of hard tubing to press the bushing in place along the length of the stuffing tube.
McMaster carries a 1/4" OD, 1/8" ID PTFE tube: http://www.mcmaster.com/#8547k23/=13ktxz6

[dmitry100]

If say it's held on by the tubing that goes over the stuffing tube and teflon spacer ... would that be just as good? Or should it be free from any movement...

[RaceMechaniX]

No. It needs to be in the stuffing tube, not just the ends

[dmitry100]

So I'm trimming my wire down to around 10-11 inches ... I would only need just one of those spacers in the middle? That would pretty much make it water tight I'd assume.

Is teflon lining still needed at all for the stuffing tube? I was gonna use 7mm ID for the stuffing tube with 5.5mm ID teflon lining (the one used for 5mm flex).
But now I feel none of that is needed and should just go with a smaller stuffing tube in general without lining... like 1/4 ID or so.

I'm just hoping my click drives would still be slightly adjustable. Therefore I was thinking to drill motor mount screw holes so that it makes the motor movable up or down to match any negative adjustment in the drive.

[RaceMechaniX]

In your case you would want one at either end and one in the middle. No need for Teflon, just plain brass tubing. There is still some clearance between the bushing and shaft so its not watertight.
If your shaft length is 10" there should be enough length to allow some bend. You may need to move the bushing that is closest to the strut further up towards the motor if it binds.

[jwohlt]

Sorry I have not been on here for some time.

I do make all sizes of stubs, wire and lengths. The latest test was running 093 on Spartan. Works great. Most of what I seem to make anymore is custom drives.

I have now made them for nitro and they are working well...who would have guessed. Couplers are the issue but we have been making some custom adapters to make them work.

Just made Dmitry some 6mm with 3/16" stubs that were 114 mm long. No, I do not just use Octura. Just made a new cable assembly for the Traxxas Cat with 150 cable.

If you have the new promarine cat I know a 078 wire drive will make it better...just has a little bit longer prop shaft.

I make wire drives up to 34"

Thanks...just thought I would chime in here since it has been a while. Glad to see everyone is doing well with some fun new setups and toys.

[jwohlt]

I see you are talking about bearing struts. I have all but given up on the smaller stuff as well. Billy Oxidean still uses mine and swears by them but there has to be a better way. I have some ideas for a cartridge bearing assem that could be easy. I also think just a bearing at the strut end and a bushing at the nose end is a good idea.

Also, larger struts are fine with the roller bearings but they are large. You also have to use a hardened shafts on roller bearings.

[RaceMechaniX]

Hello Jeff, good to hear you chime in and thanks for mentioning what you can do.
A couple of questions:
Can you produce stub shafts in the region of 4-5" long?
Can you get metric wire instead of US standard, for example 2.5mm (.098") or 3mm (.118)? As you mentioned collets are the major limiting component and some very nice collets are available for metric size wire.
How deep can you drill into the stub shaft? For the power levels I am cranking out I find 1.5" is the minimum insertion depth required.

BTW, I went 143mph using bushings. I have machined by own ball bearing struts, but got tired of replacing $50 worth of bearings everything the shaft bent or threw a blade.

TylerCouplers.jpg

[dmitry100]

Tyler, http://www.conrad.com/ce/en/overview...ng-Steel-Wires
They carry metric wire between 0.8mm to 5mm.

Typically that's where most (DE) guys get their stuff. But I'll ask a few guys and see if there's any better suppliers.

[oscarel]

Very few people probably use 6mm stub shafts. And if they are available from Jeff, no need to make them here.
I searched on MBP and could not find any clutches to speak of.
These are not mine, I am trying to get Brent interested in making the gas size wire drives in smaller sizes for us. See link here: http://jrcbd.com/forum/showthread.ph...lid+flex+drive

Unless you have a very very shallow bend, it is not going to work for twin cats.
TG

Tyler, glad to see you're working with Brent! I've been using his shafts in a T hydro and cat with great results. If you need any help "pushing" him let me know and I'll do what I can. He's a great guy and his work is top notch.

[RaceMechaniX]

Brent has been easy to work with thus far, if he is on the fence I will let you know if a small push is needed.
I have his SFD'd in my gas whiplashes.