What Size Wire Drive for 21

[AzMandella]

What size wire drive would you use for 21 mono and sport 20 . Can't seem to get a reply from Wohlt's . I have emailed a few times and nothing in response .

 

[John Beardslee]

I use his .078 dia for my .21’s. It’s been a while since I contacted Jeff but he’s been good about getting back to me. He’s still working folk I think and has a real job that takes priority. Did you go to his website?

 

[AzMandella]

Yes I have been on the site and used the "Email Me" link three times in a month . Nothing .

 

[John Beardslee]

Hummm, let me see if any of the other guys that use his services have any info

 

[Danny King]

I’ve always emailed him and he gets back to me. It’s been awhile since I’ve tried.

 

[Timbo Whalen]

Yes I have been on the site and used the "Email Me" link three times in a month . Nothing .

I've been interested in wire drives, too.... would you be so kind to provide a link to

Jeff's site?..... Thanks!

tim

 

[John Beardslee]

I've been interested in wire drives, too.... would you be so kind to provide a link to

Jeff's site?..... Thanks!

tim

Tim it’s:
wohltzrcboats.com
John

 

[Timbo Whalen]

Tim it’s:
wohltzrcboats.com
John

Thank you, John....

Hope all's well with you.

tim

 

[Mike Rappold]

How large of nitro engine can a wire drive be used ? Will they handle a 45, 67, and 90 size engine?

Mike

 

[John Beardslee]

How large of nitro engine can a wire drive be used ? Will they handle a 45, 67, and 90 size engine?

Mike

Gas guys are running them and I know of people running them on 90 size nitro

 

[John Beardslee]

Thank you, John....

Hope all's well with you.

tim

We’re all good! Bored crazy with no racing but looking forward to Huntsville next month! Getting our Covid shots on Saturday

 

[Buckshot]

How large of nitro engine can a wire drive be used ? Will they handle a 45, 67, and 90 size engine?

Mike

Mike,
I use Brent Byers .125” wire drives in my gas rigger and it is pretty slick! Building a new twin and putting wire drives in it as well. I also have all the parts to convert my single 90 hydro to wire drive, I’m confident that it will hold up just fine after seeing the abuse my gas rigger takes.

 

[ALLAN YUEN]

What kind of metal for wire drive? Tin Steel or Stainless steel ?

 

[John Beardslee]

I’m still gathering info but so far I can say that the wire works best will ball bearing struts. I see little or no advantage using a wire drive with a bushing strut so far.
Thanks John

 

[Wasted wages]

ball or needle bearings ?

I used to run needle bearing struts on my mono years ago,,, then everyone in the club kinda got away from using them...
I always liked the way they setup and worked..
I think we used a 3/8 or 7/16 brass tube on the strut and two sets of caged needle bearings that slipped into the tube for a 1/4" cable. A little brass nose cone to reduce and solder to the strut tube in the hull...
Can't remember the part number for the bearings.... S-3 or something like that ???

and maybe a 3/16 ID x 3/8 OD bearing and brass tube for 3/16 cable ??

 

[John Beardslee]

ball or needle bearings ?

I used to run needle bearing struts on my mono years ago,,, then everyone in the club kinda got away from using them...
I always liked the way they setup and worked..
I think we used a 3/8 brass tube on the strut and two sets of caged needle bearings that slipped into the tube for a 1/4" cable. A little brass nose cone to reduce and solder to the strut tube in the hull...
Can't remember the part number for the bearings.... S-3 or something like that ???

Ball bearings, the stub shafts are soft and won’t support needles running on the surface. I buy ball bearing by the dozen. The balls are really small and if you run them dry at all the little grains of sand disappear quick! I buy mine from McMaster Carr, class 3 I think.

 

[Wasted wages]

Stub shafts ?

Are the wire drives not an all one piece shaft ??
I have never seen one, or all the pieces it takes to use one. I was picturing just a flexible solid shaft to replace the cable... basically piano wire...
Is there more to it than that ?

What am I missing here ??

 

[Buckshot]

Stub shafts ?

Are the wire drives not an all one piece shaft ??
I have never seen one, or all the pieces it takes to use one. I was picturing just a flexible solid shaft to replace the cable... basically piano wire...
Is there more to it than that ?

What am I missing here ??

Brent's wire drive has a stub shaft that is supported by ball bearings or lead Teflon bushings in the strut. See photo below of the strut end of the system.

 

[ALLAN YUEN]

Brent's wire drive has a stub shaft that is supported by ball bearings or lead Teflon bushings in the strut. See photo below of the strut end of the system.
View attachment 288860

I wonder that how long will wire drive stand to run until break ( snap off wires piece ) or (bearing worn )10,000 hour ?

 

[Wasted wages]

Thanks Buckshot... interesting stuff...