I'm writing a script for a private film at the moment. There is a question I have. How much steeps the downhill from St. Ninian's to the bottom of Bray Hill? I have an altitude poster from 2011. I don't know how precise it is. I measured that the steep is about 54,7 yards or 50 meters and that the distance between St. Ninian's and the bottom of Bray Hill is about 0.34 miles or 547 metres.

Does anyone have the exact measures? Are my figures resonable?

is this any use http://ridewithgps.com/routes/385980 use your cursor on the elevation graph and it gives you percentages

(24-06-2015, 02:40 PM)mdvineng Wrote: is this any use http://ridewithgps.com/routes/385980 use your cursor on the elevation graph and it gives you percentages

Thank you! That gives an elevation difference of 414 feet or 43 metres. The distance, 0.34 miles or 547 metres, I've got by an on board computer.
These figures are from St. Ninian's to the bottom of Bray Hill.

From the starting line it is an elevation of 160 feet or 48,8 metres on a distance of 0,69 miles or 1 110 metres.

Interestingly that graph makes the Les Graham Memorial the highest part of the course at 1,417 feet (compared with Brandywell only being 1,388 feet).

I wonder what the margin for error is on the recording device.

(24-06-2015, 04:17 PM)HammerHead Wrote: Interestingly that graph makes the Les Graham Memorial the highest part of the course at 1,417 feet (compared with Brandywell only being 1,388 feet).

I wonder what the margin for error is on the recording device.

Yes HammerHead! I believe the same. I've always heard that Brandywell is highest, 1385 feet above the sea level.

I noticed also that he elevation continues to drop from the Bottom of Bray right up (down!) to Selbourne Drive which just ain't so?

What a bunch of pedants we are!

(24-06-2015, 04:30 PM)Dougboy Wrote: I noticed also that he elevation continues to drop from the Bottom of Bray right up (down!) to Selbourne Drive which just ain't so?

Yes I wonder how reliable the map at http://ridewithgps.com/routes/385980 really is?

(24-06-2015, 04:48 PM)HammerHead Wrote: What a bunch of pedants we are!

In the narration I'll write about 45 metres difference in altitude on about 550 metres between St. Ninian's and the bottom of Bary Hill! (If there woun't be new figures from someone who really knows!)

(24-06-2015, 04:58 PM)SILJA Wrote:
In the narration I'll write about 45 metres difference in altitude on about 550 metres between St. Ninian's and the bottom of Bary Hill! (If there woun't be new figures from someone who really knows!)

I make it 585m from middle of junction at St Ninians to middle of junction at bottom of Bray Hill and 36 m fall.

(24-06-2015, 04:30 PM)Dougboy Wrote: I noticed also that he elevation continues to drop from the Bottom of Bray right up (down!) to Selbourne Drive which just ain't so?

if you expand that first section you will find it does go up in elevation, use the instruction on the graph to drag to expand.

All I know is when you walk up it for the first time in 45 years it is flippin steep !

I couldn't believe how steep it was until I walked up it, those onboards don't do it any justice whatsoever.

(25-06-2015, 07:50 AM)mdvineng Wrote: if you expand that first section you will find it does go up in elevation, use the instruction on the graph to drag to expand.

I've tried it and I'm a little confused. The figures I get is that the distance between the Ballanard Road crossing at the gaz station and the Tromode Road crossing is 0,35 miles or 563 metres. (Measured with on board computer.) The difference in elevation between these points is 125 feet or 38,1 metres. (The graph measures.)

Please as you seem to know a lot about this, what are your figures?

(25-06-2015, 11:31 AM)SILJA Wrote: I've tried it and I'm a little confused. The figures I get is that the distance between the Ballanard Road crossing at the gaz station and the Tromode Road crossing is 0,35 miles or 563 metres. (Measured with on board computer.) The difference in elevation between these points is 125 feet or 38,1 metres. (The graph measures.)

Please as you seem to know a lot about this, what are your figures?

I reckon my figures are pretty much bang on at 71m elevation at St Ninians and 35m at bottom of Bray Hill giving a 36m fall, I have double checked elevation at Brandywell with same system and I get 424m which is pretty much on the money.

(25-06-2015, 11:31 AM)SILJA Wrote: I've tried it and I'm a little confused. The figures I get is that the distance between the Ballanard Road crossing at the gaz station and the Tromode Road crossing is 0,35 miles or 563 metres. (Measured with on board computer.) The difference in elevation between these points is 125 feet or 38,1 metres. (The graph measures.)

Please as you seem to know a lot about this, what are your figures?

I get 128ft as the lowest point is just after Tromode rd. Also we have to allow for how this was measured as most GPS systems are only good to 1<5mtrs for good ones and 10mtrs or more for average ones with a good signal and with heights even worse!

The map isn't very precise but I've found out that the distance between Ballanard Road and Tromode Road is close to 0.35 miles or 560 metres measured with an on board computer. The difference in elevation is about 108 feet or 33 metres. As this site doesn't allow bigger images than 640x480 pixels it's hard to read but here is a screen dump of the map as close as it's possible to get. Note the blue line finishes after the Tromode Road crossing (where the uphill has started) which means that the elevation is about a couple of feet more, maybe 110 feet or 33,5 metres.

I still think the lowest point is just after Tromode rd at about the point the whit line is crossing the course http://i.ytimg.com/vi/Z5lYpzkLMWY/hqdefault.jpg

Yes I agree. But on the map at post #17 the blue line is too long and impossible to adjust to closer to the lowest point. The figure of the difference in altitude from Ballanard rd must be some more than 108 feet as the uphill has started where the blue line finishes.

If you measure with the help of the map, what is the distance between Ballanard rd and the bottom, and what is the difference in altitude?

From the OS map, St Ninians is bang on the 70m contour and the bottom is between 30m and 40m, if that's any help. The 40m contour is just above Port-e-Chee Avenue, which is the last turn on the right before the crossroads at the bottom.

Sat-nav GPS isn't always very accurate for elevation. When I take mine on the ferry, the trip log shows some surprising slopes on the Irish Sea!

The steepest part appears to be between the 60m and 50m contours, which measures around 80m horizontally, so a 1/8 slope.