Balancing Rod

[Seeker]

What shafts do people use in their Du Bro balancers for the self tighten props? And where did you get it from?

I see them on ebay for 40 odd bucks, which is crazy, surely there is something local

This is the rod http://www.ebay.com.au/itm/Orion-RC...154?pt=LH_DefaultDomain_0&hash=item234ac6c9e2

 

[Jackson]

Skip ahead to 3m 30s

 

[holtneil]

If you have the balancer like the one in the video, you can just use a rod with a small bit of nitro fuel pip on the end so it fits the hub, the rod and fuel pipe your get from any good RC hobby shop

 

[Seeker]

Would a derwent pencil be okay? Or would wood be not uniform enough?

 

[Jackson]

I guess it would boil down to a question of friction. The original thin rod would have the least resistance, followed by the thick threaded rod, then the pencil.

That said as it stands the position of the prop as in your pic is too far out, basically putting more pressure at both spin points, think leverage.

Move the prop as close as possible to the first support.

 

[Seeker]

That is great info. Thank you Jackson, great advice.

 

[Seeker]

Also, thanks Neil, I'll hunt down some of this tubing. Looks practical.

 

[holtneil]

You can use carbon fibre rod too, like the tail supports off a heli

 

[Seeker]

If you have the balancer like the one in the video, you can just use a rod with a small bit of nitro fuel pip on the end so it fits the hub, the rod and fuel pipe your get from any good RC hobby shop

Tried the fuel pipe. That wasn't very good. Way too many variables with movement of the hub on the pipe and rod. Looks like I will need to get the expensive metal rod for inbuilt hubs, and till that arrives the derwent will do.

 

[holtneil]

What size is the hob on the prop inside, may be a heli main shaft will do they are cheaper
250 size heli is 3.5mm x 78mm
450 size heli is 5mm x 116mm
500 size heli is 8mm x 140mm

 

[Seeker]

Maybe, But I need a shaft with a thread on each end. One CW the other CCW. Do heli's have CCW threads too?

 

[holtneil]

Thats an brillant idea get some rod the right size and tape a thread on to the end

 

[GJH105775]

Maybe, But I need a shaft with a thread on each end. One CW the other CCW. Do heli's have CCW threads too?

I am working on making a prop balancing rig, I plan to use a tap and die to make the part that tightens around the prop, and use two razer blades or washers in a slight v shape on each end to hold the rod. Will any of this design help you?