Distance from Turntable to Round House Question, Help Please!

Jay there is a formula for doing this i remember reading it a while back but i don't think it was on this forum.  So my best guess is search on Google or maybe someone will have a link for you.

Ok its on the korber website  full info on this

I was going to say that I wasn't aware of a formula exactly, but that what should happen is that if you trace a straight line out from each stall track they should all converge at the center of your turntable. But yeah, I think I have seen that Korber has some diagrams showing placement for a few different sizes of turntable

I'll take a look, Thanks Guys!
I'll report back.

I did a quick search and the only thing I found was for a Walters HO 90' TT and RH. NARESAR is correct that the RH track centerlines should line up with the bridge pivot point. So this is where I'm going to start. I'll update as I go along for future references.

Not sure about a formula but it all depends on the angle of the stalls, assuming you want the track straight from the turntable into the stalls. Just set the round house down and draw a straight line from the center of each stall and where the lines meet thats the center or pivot point of the turntable. Then use a compass set to the radius of the turntable to the center to find out where the edge of the turntable should be.

Pete

I found this thread that might have some information you can use. When I was researching roundhouses a couple of years ago, Korber was one that I couldn’t find a footprint indicating how far from the center of the turntable it should be placed. There’s a post (#6) in the thread suggesting the front be placed 32" from the center. Mr Muffin’s might have more info.

https://ogrforum.com/topic/48593297343621077

I think I got it in the correct spot. I was able to line up the center and two outer stalls to line up on the center pivot. I layed a piece of track on top of the TT bridge and swung it by hand and all 5 stalls lined up perfectly.

I haven't done it yet 'cause I just finished in laying the RH. But I'll get a measurement from the front wall to the center of the TT for those that may need it in the future.
Now I need to cut the Gargraves track and put in some wire feeds. I powered up my RH lights and found out that 2 of my LEDs crapped out. So now there will be a facility maintenance man on a ladder attempting to change the bulbs.

Wahoooo, one step closer, no steps backwards. Thank you very much to everyone that replied.

***EDIT***

The measurement from the front wall of the RH to the center pivot on a 34" turntable is 40 3/16".

Another way to do it is to put two lengths of straight track on top of the two outer stall tracks, and then slide the roundhouse around until the point the center rails of those two tracks cross is over the pivot of the turntable.

If you search this forum for "roundhouse" and "turntable" as terms that must be in any search response, you will find plenty of discussion on this topic.  To be succinct, the answer to your question is a function of the "inside" angle between each roundhouse door, each door width, the depth of each roundhouse stall, the diameter of your selected turntable, and what you want things to look like inside your roundhouse.  You also have to carefully consider the turntable approach tracks if you want more than one turntable entry track.

Not often discussed, but some prototypes used track crossings (with frogs & guardrails) to minimize the distance between turntable & roundhouse.  Same process could be used for multiple turntable entry tracks.

Your pictures make it look like your locations will work, but I highly recommend using a long straight edge and a pencil to mark your roundhouse track center and your turntable location before cutting.  At the presumed distance, being off just a 1/4 inch might bar successful roundhouse entry!!

Chuck