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Source for ballast (Mibo, Sanda)

Konrad

Well-known member
I'm looking for ballast rods that will fit the the Sanda Mach 2 and Mibo 1.5m models. I think these are nominally 17mm rods. Here is the USA we are still on the antiquated Imperial measuring system with a 5/8" (15.88mm) rod being a bit to small and 11/16 (17.46mm) is a bit to large, well for the ballast tube installed in the Sanda.

TIA,
Konrad
 

RalfH

New member
Hi Konrad,
If you want to pour your own ballast, I’m heading to Germany over Christmas and can pick up a few (short!) lengths of 17mm Cu tubing.

Ralf
 

Konrad

Well-known member
Yes, Thank You!
If you don't think TSA will flag you as a pipe bomber.:oops::mad:
Or Trump had an exorbitant tariff on Copper.:eek:

This is for a 17mm OD pipe.

Thanks,
Konrad
 

RalfH

New member
Good point... I’ll chop it in small pieces, how long do you want them? Regarding the tariffs we will have to see, that is too far out to forecast
 

Wayne

Administrator
Staff member
The easy stuff to get around here for a decent price is drill rod and cut to lengths of slugs. Otherwise, for lead, just drill a hole in some wood the correct diameter and pour in some lead or better yet woods metal. :) But I do like a tougher casing for my lead, so check and see if you can source some brass tubing for a decent price. Should be out there somewhere. Then cast your ballast into that. :)
 

Wayne

Administrator
Staff member
Konrad,

I'm ordering up some Tungsten and am wondering if you can double check the 17mm size. I'm asking for a quote of 17mmx30mm slugs with slight bevels on the edges. Something like this.
tung.jpg

Getting some quotes on a few different sizes, but the 17mm seems pretty normal size for slope use.
 

Konrad

Well-known member
Yes, the nominal size is 17mm (Actual size is 16.98 +-0.01mm) Diameter. These are the brass bars from the Mibo mini T ballast systen uou sold me. I'd like the slugs to be 50mm long. Love the idea of tungsten! I'll use Pb but Tungsten is dencer and safer.

The Sanda Mach 2 has a slightly distorted ballast tube and might benefir from a small diameter slug maybe 16,88MM or have threaded ends to allow an exstraction bar.
 
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Wayne

Administrator
Staff member
Yeah, I was wondering about undersizing it slightly so it can fit into 17mm ID tubes. 50mm long? You crazy! I find shorter slugs are a lot more universal and less likely to break should they get dropped. Been there, done that.
 

Konrad

Well-known member
You Crazy!

That is the assessment my wife has made of me!

50mm is what was used when placing my ballast tube. It is what Mibo supplied in their mini T ballast system.
 

Konrad

Well-known member
Wayne is there any more on this? My Sanda Mach 2 came with a 17mm ballast tube installed. With the cylindricity concerns with molded tubes I'm thinking that 16mm slugs are what I need. Here in the USA 5/8 might actually be more practical. As to length 30mm looks to be a reasonable length. It is what I often see on the slope (copper pipe couplers)
 
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