Heavy duty Latex hose works for the spinner grabber. Maybe also some rubber lined automotive hose?  Miller sells replacement liners made out of Urethane.

You will probably have to turn a holder for it.

I use a 1.3mAh 3s lipo to drive my old Miller 1/2A Starter.   It uses a brushed motor, probably at least "Speed 400" size or larger, something around 4cm diameter and 8cm long.  Housed in a bit of PVC pipe with a pushbutton at the back (I use my little finger to trigger it).

Hi Andrew,
My Sullivan 1/2A starter uses the Mabuchi RS-540SH motor model #7520 set up for CW rotation. This is a 4.8 to 7.2 volt motor that you drive for short periods with 12 volts to get the needed torque.

Orv.

Go find a old battery drill.  Take it apart and remove the reduction gearing.
I have a 9.6v drill based starter that is running on 12 volts for a long time.
find some PVC pipe it will fit in, and get a car horn switch from the local auto parts store

I use black fuel tubing from a lawn mower for a drive cone.

I bought a friend with a lathe a beer and he made a cup for the shaft.        

I bought one of those lime green Sullivan 1/2A starters.  It works great.  The RPM is a lot higher than the big block starters.  I find that reving it up off the engine, releasing the button, and  engaging while it's coasting down provided just the right persuasion for the TeeDee .020 and .049.

I don't dare use it on a reed for fear of pushing the crank into the reed valve.

Hello Andrew
                      I used a Mabuchi 540 motor a nicad pack for a car cut down to fourcells,some wire,micro switch ,a small piece of aluminum round drilled for a set screw,piece of rubber hose and an L bracket to make my own.Here are some pics.

                                                                                                                                             Juan

Boy this brings back memories of many years ago when I first moved back to the KC area.   Early 60's it was.  Working at an injection molding plant.  My brother and I worked there together.   We got several guys started flying control line when Charlies Hobby Shop had a box of the McCoy .19 Redheads.   Some where a little hard to start.   One of the guys took a heater motor out of his car parts and connected a peice of garden hose.   A push button switch and some electrical cable.   Worked like a champ.   It was quite a few years before I seen an electric starter advertised for R/C use.

Hello David
                   The tie wrap has worked fine since I started to use the starter,I always use a TeeDee spinner on the engines I use a starter on. I make sure they are not flooded by giving them a few flips without the battery connected to the plug.

                                                                                                                                         Juan