New Goodyear T/R

Bronze member

Hi,
Itâ€™s been a while since it was announced that Open Goodyear T/R will no longer be run at the Nationals and that it is to be replaced with a new class. However here we are nearly at the end of April, the Nationals are only 4 months away and do not have any rules or even a name for the new class!

To get things moving, can I suggest Formula 2 Goodyear, and on the basis of you that do donâ€™t know what you want until youâ€™ve got what you donâ€™t want can I offer the attached draft set of rules and invite those who are serious about participating to feel free to offer amendments / alternatives and to make their comments known to the C/L Technical Committee.

All the best,

Peter

Silver member

I have built one that matches the specs you suggest, I will bring it to Barton on sunday to evaluate its performance [it is yet unflown]. My only concern is using a thermoplastic prop on a nelson which needs a small prop to perform as it was designed, I will be using a carbon fibre 6.5x6 for tests I think it will be safer!
Hope to see you there
regards
Cannon/Cannon

Bronze member

Hi Derek,

Must admit that I have my concerns about using plastic props, but at the time it seemed to me that it was the consensus that they should be used. If it goes that way then I will probably use the black Graupner Speed props with the 8 mm hubs. A few years ago I pitted a steel linered Mazniac that Taff Bollen had prepared for Dave Wollacâ€™s F2CN which ran on one of the 6.5 x 6.5 That engine had no end of comp, went like a train and the revs were phenomenal but the prop never let go.

See you at Barton on Sunday the 29th April

Peter.

Bronze member

Hi Peter, Derek

I agree that it is time the rules were agreed and published. I have also drafted a rule set which (suprise, suprise) read much like yours. The only differences are (I think):

1. We have discussed, and I think agreed, front induction motors only. This is intended to exclude T/R motors, though I'm not sure this is relevant.

2. I think we agreed heavier lines (.34mm?).

Please don't take this as gospel, and it doesn't affect preparing a model anyway.

There is a CLTC meeting in mid-May, and I hope this subject will be put to bed at that meeting.

On the subject of props, this will also be discussed in May, and an announcement is imminent. There should be guidance on the allowable props for Brit, and also props in general. I suspect that the guidance may be on the lines of "props may only be used within the limitation placed upon their use by the manufacturer". This means that we will need to be careful what we do with Graupner Cam Speed i/c props. If you spend some time on their web-site you will see that their advice is "inconsistent", but they certainly suggest that some of the props are unsuitable for 2.5cc. They go on to recommend most of their 6", 6.5", and 7" are only suitable for Glo engines, but if you go to their German language pages then translate, they say internal combustion, not Glo!

Please keep you eyes on the BMFA CL pages, because this is where the announcement will appear.

Cheers, Martin P.

Bronze member

BMFAâ€™s C/Line Technical Committee has published the provisional rules for the new Goodyear T/R class â€œProvâ€ Goodyear Team Racing. Basically its Brit on any 2.5 cc suction fed diesel flying on 0.34 lines on a plastic prop.

Additionally the old style APC 7â€ x 5â€ prop has been banned (only the 7â€ x 5â€ currently available from PAW are now legal).

Also they have expressly forbidden the use of the Graupner CAM props, which were specifically designed for use on electric motors, in Prov & Brit Goodyear and F2CN T/R

For further details see the BMFAâ€™s â€œNewsâ€ on their web site

http://www.bmfa.org/news/uploads/Prov Goodyear Rules Web.pdf

http://www.bmfa.org/news/index.php

Silver member

Peter has beaten me to it! These rules were discussed at the CLTC meeting held last Saturday and were only posted on the BMFA site yesterday. They are still PROVISIONAL and can be changed if they need "Fine tuning".
If anyone has any points that they wish to raise about them please contact either myself or Martin Paffett.

Chris Barker
Chairman
CLTC

Site Admin

Link for rules is
http://www.bmfa.org/news/uploads/Prov%20Goodyear%20Rules%20Web.pdf

I do wish these folks would realise the error in putting spaces in file names!

Jim

Bronze member

Hopefully, by now everybody has had a chance to look at the Provisional Goodyear rules. As mentioned by Peter, they are not drastically different to Brit Goodyear, which is quite intentional. This means that any Brit G/Y model is also eligible for Prov G/Y, so - why not enter both classes at the Nats? You'll get twice as much flying from your nice new Brit model!

Martin P.

Silver member

Not without changing lines. Brit lines 0.3mm, Prov lines 0.34