Adding Robart Gear to a Sterling Stearman
11-30-2004, 07:51 AM
#1
Senior Member
Thread Starter
Adding Robart Gear to a Sterling Stearman
Hi guys. I have a very well built Sterling Stearman. We all know that the original gear struts are not enough so I have a set of Robart struts for this plane on the way. Has anyone out there retrofitted a built Sterling PT17 with the Robarts? I am just looking for any hints that might make the surgery go a little easier.
11-30-2004, 12:13 PM
#3
Senior Member
Thread Starter
RE: Adding Robart Gear to a Sterling Stearman
I was woundering if they would come with any instructions. That good to know. Your Stearman looks very nice. Are the radial and the strut covers the ones that came with the kit? If not whose are they?
12-06-2004, 08:21 AM
#4
Senior Member
Thread Starter
RE: Adding Robart Gear to a Sterling Stearman
I got the Robarts for the Stearman. They came with a blue print with adequate diagrams of the installation. I did have to remove the sheeting from the wing to the firewall on the bottom of the plane to install them. I will have to fab up the the strut fairings out of balsa to cover the plywood supports that attach to the flanges on the gear. The struts are very strong and the attachment is solid. Should make quite a difference in this planes ground handling. They look long but seem to match the scale drawings pretty well.
12-06-2004, 10:15 AM
#5
Banned
RE: Adding Robart Gear to a Sterling Stearman
The strut covers were the plastic ones that came with the original kit, and the engine is Williams Brothers, with an OLD OS 91 interleaved.
Les
Les
12-06-2004, 12:24 PM
#6
Senior Member
Thread Starter
RE: Adding Robart Gear to a Sterling Stearman
Did you cut into the firewall to create room for the carb? I am in the process of making an engine decision on mine. I have been flying it with an exposed OS 91 four stroke. I didn't get the plastic parts with mine and as Williams bros is out of business I can't find a good radial to put on the front. I decided to go with the cowl and one of the available front side radials. The OS would require cutting into the firewall and it would stick out of the cowl. I have a new .75 two stroke that would fit with no firewall mods and stay inside the cowl. All that would stick out are the Pitts pipes and the needle valve. What do you think?
12-07-2004, 10:22 AM
#7
Banned
RE: Adding Robart Gear to a Sterling Stearman
I quit using 2 strokes long long ago. I am one of those old farts that think a scale plane would like to sound better than a bumble bee.
I don't think I had to cut the firewall, that my engine mount was long enough to just make it. This was done in 1992, and I can't remember.
Les
I don't think I had to cut the firewall, that my engine mount was long enough to just make it. This was done in 1992, and I can't remember.
Les
01-07-2013, 05:51 PM
#8
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RE: Adding Robart Gear to a Sterling Stearman
ORIGINAL: bassman
Did you cut into the firewall to create room for the carb? I am in the process of making an engine decision on mine. I have been flying it with an exposed OS 91 four stroke. I didn't get the plastic parts with mine and as Williams bros is out of business I can't find a good radial to put on the front. I decided to go with the cowl and one of the available front side radials. The OS would require cutting into the firewall and it would stick out of the cowl. I have a new .75 two stroke that would fit with no firewall mods and stay inside the cowl. All that would stick out are the Pitts pipes and the needle valve. What do you think?
Did you cut into the firewall to create room for the carb? I am in the process of making an engine decision on mine. I have been flying it with an exposed OS 91 four stroke. I didn't get the plastic parts with mine and as Williams bros is out of business I can't find a good radial to put on the front. I decided to go with the cowl and one of the available front side radials. The OS would require cutting into the firewall and it would stick out of the cowl. I have a new .75 two stroke that would fit with no firewall mods and stay inside the cowl. All that would stick out are the Pitts pipes and the needle valve. What do you think?
bassman
I have the raidial molds for the sterling pt17 dummy engine if you're interested. I also have the molds for all the other parts that came in the kit. I make the parts with fiberglass.
