Author Topic: Bend diameter  (Read 964 times)

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Offline [NO] Tore Fagerli

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Bend diameter
« on: December 21, 2011, 12:55:05 PM »

Hello everybody

We have some suggestions concerning the track parcours and the wheel construction that might have been discussed before we meet in Portugal.
Our major concern is the shape of the track. The whole track will need a lot of space, if there is a 6 meter limit for the diameter for the bends. We therefore suggest that more narrow bends will be a possibility.  Then the track can have more intricate shapes (oval, 8-shape, etc.)
If we build the wagons with wheels that are not fixed to the axel (which we think was the decision from the “wheel group”), we can make more narrow bends. This will cause some difficulties concerning the couplings for the wagons, but that problem can be solved if it is possible to turn the axels in the bends and the couplings are fixed to the axles. Then again we have the possibility of fixing the wheels to the axels, but a new challenge will occur for the way we construct the undercarriages.
Conclusion: Our suggestion is to reduce the minimum diameter for the track bends to 4 metres and keep the other measures as they are.

We wish you all a Merry Christmas!
Stig & Tore

Offline [LU] Paul Faber

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Re: Bend diameter
« Reply #1 on: January 24, 2012, 06:31:46 PM »
Hello Tore & Stig

Concerning the bend of the track it would be very interesting if we could make a smaller curve radius, because then we have much more possibilities for the track design.
But we think that this is only possible, if we reduce the size of the whole train.
On our last project we had the problem, that (because of its length) the locomotive hardly fit in the track with a curve radius of 3 m. This problem could also occur with the wagons, if we only reduce the curve radius and not the size of the train.
About your suggestion to solve the problem of the couplings by using a turnable undercarriage (with the coupling fixed on it), we think that in this case the wagons will derail, unless we make undercarriages with two axles each (in this case we can even keep the size of the train).

Kind regards.

Jean-Jacques & Pol

Offline [NO] Tore Fagerli

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Re: Bend diameter
« Reply #2 on: April 17, 2012, 01:20:59 PM »
Hello again!
I think Jean-Jaques & Pol might be rightconcerning the risk of derailing unless the undercarriages are built with two axels each, so why not do that? This will of course make the wagon a little more complicated to build, but I think it will work.

Tore