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Author Topic: Vintage Team Racing  (Read 4981 times)
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Fourfingers
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« Reply #75 on: January 18, 2017, 07:57:27 AM »

Talking of ignition improver ......
My newish MARZ 2.5 seemsto prefer 0% improver .... its a revver, alright, on fuel with additive - but on straight Sports mix it went berserk!  Frightened me to  death.
Any theories why this is, you bright guys out there?  Maybe in USSR when this moter was built, ignition improver was hard to come by?  Certainly some strange brews must have been used.
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old4570
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« Reply #76 on: January 20, 2017, 08:09:19 AM »

Interesting ...

 Dii is generally used ( Needed ) to lower compression ( stop pre - ignition ) on smaller racing props .. 
I usually found engines running on small props and no ignition improver ran very hard ..

 The Mars if memory serves is a 360 deg Port engine much like an ED Racer ( I had one 20 years ago but never ran it ) , and does not rev out as hard as a G20 per say ... 

 If one may ask the fuel formula and propeller used ...
I could see where a 9x4 might run better without ignition improver  , 8x4 ( Huh ) , 7x?   ( That would be a surprise )
Did you tacho ? 
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Fourfingers
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« Reply #77 on: January 20, 2017, 01:11:16 PM »

Hi Old ...(cant really call you that!)
Prop APC 8x4 ... fuel southernModelCraft sport 30 % oil, with or without improver.  B****** slipped in the stand and took half my hand off.
Whats a tacho?  Sure we ate them in San Fran '68 .... no, dont have one, sorry.  My ears tell me it was screaming ...17k?
Just been to the Oliver auction at Charterhouse... wow.  Met the family, lovely people, signed my catalogue too.
Acquired a Cub Schnuerle - possibly the last but one made by the legends from Ferndown.  Will sound great in a duo with my Tom Ridley one.
If I may be permitted one observation: auctioneer didnt do them as well as he could have - whacked the lots thro' too quickly.  Perhaps, what do I know?
Quality is evident long after the price is forgotten as Mr Royce, I believe, once famously said.
Would you believe his car didnt make reserve?  Morons.  Buyers that is.
Two fingers
"How many engines do you need?"  Mrs C.
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old4570
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« Reply #78 on: January 20, 2017, 06:14:16 PM »

Hmmmmm !

 Tacho / Taco !!!!  

 Tachometer =  Electronic device to measure RPM ..
 Taco = Mexican food , now eaten world wide .

 Regarding Tacho ...
 One of the very first accessories I ever purchased for modelling , can't go without a tacho
Though I have never in my 53 years had a taco ..

http://www.ebay.com/itm/GT-POWER-Professional-Motor-RPM-Tachometer-RC-Heli-Aircraft-Aircrafts-/182361444853?hash=item2a7596d1f5:g:6G4AAOSwux5YLsIP

Currently I have one of these , modified to run 2 x AA ( I hate those button cells )
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