Welcome to Chins Chins, my chance to chin-wag.
Each month I will be looking at something new in the modelling industry, some history from the same month a quarter of a century ago and current BumpyGreen projects I am involved in
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Last Months Project...
Another year is upon us, and we begin to count the days to the clocks changing and we can look forward to those glorious unending evenings of flying time when that great solar wonder, The Sun (yes you remember that thing) seems to take forever to finally submit to sunset.

There was no project for December as it was Christmas, the site access had been terminated, the weather was awful and there were plenty of other activities to keep us all busy. Don't forget to check out the Christmas bash with Buzzards Flying Club or some of the reviews posted during our Christmas break.
What's New?

This month my main project will be the conversion to electric power of the Modeltech Mustang, built and reviewed by Daren. To that end some rather specialist components were acquired for the job.

Typhoon 625 Race Motor. First on the list of what to get was the motor. I didn't want any old motor, I wanted something I knew would be reliable and offer the kind of power required to make this model shift. After much discussion with the fellow Bumpy Green members my original choice was confirmed. The Overlander Typhoon 625 Race motor was first encountered on a visit to their web site. I was looking for a suitable motor to replace the 540 installed in my Protech Unlimited.

Typhoon 625 Race Specification:
Internal cooling fan
Dynamically balanced, 3 pole armature
Weight: 230g
Power: 6 - 10 cells. 7.2 - 12 volts.

Overlander also supply a suitable 8 cell flight pack. Using Sanyo SCR cells. One of the highest discharge rated cells for flight packs the Sanyo SCRs carries a heftier punch than the average NiCads.

Specifications:
Dimensions: 177 x 46 x 25mm
Weight: 458g
Charge Rate: 2.5 Amp +
Discharge Rate 35 Amp ++

Other possibilities will be the 9.6v 1300 Nimh packs, which weigh a lot less at 200g & should counter the reduced capacity/ flight time. Or the Sanyo SCR 1250 mini C cell pack. Again using the high discharge SCR cells but again with a reduced weight of XXXX this should provide a middle ground pack for testing..

Read all about it in next months Chins Chins.

What's old?

What was going on in January 1976 in the modelling world. Take a look back at some snippets from a magazine of the era.


The new year opened with a scathing editorial note to the readers at large concerning the continued lack of interest in forming a Non-contest modellers organisation. Receiving only 50 replies Ray Favre's efforts were not unrewarded but not met with the mountain of mail that might have been expected. Ray went on to analyse the response, breaking it down into age group and subject. It seems a broad spectrum of interest was present but a certain lack of enthusiasm (or perhaps the opposition to laying out more money) seemed to stem the attempts to set up this organisation.


Another interesting notice along the same lines as last months. This time however it's informing the aeromodelling community that the price has gone up for the licence required to fly radio control models. I'm still intrigued to find out when this licence stopped being required.


Cover feature was the OS Cougar Mark II. Representing state of the art technology, this radio setup came complete with T/x, r/x, nicads to suit, charger, 4 servos & remote switch harness. Distributed by Keil Kraft, It also had the option for fitting a 5th channel operating switch


Campaign for quieter silencers was gathering momentum, and was now showing proof that quiet engines didn't need to be under powered. Using a number of different test aircraft, engines and a variety of silencer types & combinations a detailed chart was able to be referenced showing the noise level & power output of any combination. Overall conclusion having reduced one engine from 97db to 77db. All this in light of 'The control of Polution Act 1960' changing the number of complaints required for an investigation from 3 to 1.
At 97db I think we'd get complaints from the next county these days let alone the locals.


Mick Reeves name appears in a prominent article for the first time since I began my series on the Olde Wolrde magazine series. He was the inaugurater of a novel & fun contest involving r/c planes attempting to land on a designated area of the runway or strip, measured out to be the dimensions of an Aircraft Carrier deck. The Mick Reeves Challenge Event for R/C Carrier Deck Landing involved some skilled flying and included the later addition of 3 arrester cables for planes with suitable hooks.
This could be one for a summer event at Bumpy Green.


Only one group photo this month, featuring the Ashford Thermal Meet fom November 1975. Hosted by Ashford Radio Aeromodellers with attendance from Dover Bloobirds, Thanet MFC & the Canterbury Pilgrims.

Recognise yourself from any of the pictures featured, we'd love to hear from you at Bumpy Green.

What's next?
Following on from Darens superb review of the Modeltech Mustang, I have been tasked with converting this model to electric power so it is not limited to slope soaring. The parts to be used are listed at the head of this article and I will detail the installation and setting up of this conversion. As the Mustang makes such a great sloper I will also aim to make the power installation easily removable for those days of silent PSS a the local slope.

That's it for another month,
See you in February.


Article by John Kent from Bumpy Green Model Aerodrome
20th January 2002