WANTED OS MAX I .15

[Ted Hidinger]

Someone has to have a OS Max I .15 – need it for Vintage FAI, don’t need New In Box, would like one that has decent compression along with “normal” lug holes. Will PayPal or check (or even CC if you are setup to take them). Call (602 316-4430 or PM me what you have. Ted

[Daniel Hopkins]

I have a .15 III steel fine if that helps.
dlh98370

[Ted Hidinger]

Thanks for the offer, I HAVE at least 12+ Max III’s and as many Max II’s —- I must have a MAX I (one) that is the ONLY engine I can use in Vintage FAI Period I class.
It MUST be a Max I. Ted

[Steve Landy]

I may have a spare. I need to locate it though. (In the middle of spring cleaning.) I use a Torp GH .15 that Bob Mattes has modified. It is as fast as 90% of the Max III’s I know of. They may be fragile, but so far, so good.

[Anonymous]

I might be missing the point here, but the rules for FAI power (as amended in 2007) state;
‘OS Max 1’s, OS Max II’s and OS Max III’s will be allowed for all models. The
availability of 1’s and 11’s is very limited. Also, the power difference is very
minimal between the three motors’.

So, one of your dozen Max IIIs can be used.
John

[Ted Hidinger]

John, The enclosed is from the 2016 rule book – to be eligible to fly a Vintage FAI Period 1 (one) model you MUST use an engine that was manufactured BEFORE the cutoff Date of Dec. 31st, 1955. That means that ONLY the OS Max 1 .15 would be able to be used – II’s & III’s were manufactured AFTER that cutoff date.

Section 18.1.1 – The following sentence was added to clarify the acceptability of using any pre 31 Dec 1955 engines not specifically listed as eligible. “Any glow or diesel engine of 2.5 cc displacement or smaller manufactured before the Vintage -1 cutoff date of 31 Dec 1955 is eligible.

Yours truly,
Ted

[Bruce Hannah]

John about two or three years ago they made the Max 1 an era one motor.You are right about the original rules they had all three Maxes in the era 2 motor selection.I saw a Max 1 .15 on a Spacer of about 430 square inches last Nov. flew very well made it into the flyoff’s and took sec.Got very high on the 20 sec. engine run.Bob Stalick has a friend trying to sell a OS Max 1 .15 give him a call.

[Anonymous]

Surely the Max I is not an Era 1 motor.
Wasn’t it new on the scene when Draper won the 56 champs with one?
That makes it Era 2, doesn’t it, or was it included as Era 1 anyway?
John

[Ted Hidinger]

John, The Max I .15 is a Era 1 motor – here is a direct copy from the OS Max web site:

In 1941 the O.S. Engine Mfg. Co. was established. In 1954 the first of a long line of O.S. ‘MAX’ engines, the MAX-1 29 and MAX-1 35 appeared, followed by the MAX-1 15 in 1955. In 1956, the MAX-1 15 powered model flown by Ronald Draper won the official FAI World Free-Flight Championship held in England. This drew worldwide attention to O.S. engines and became the turning point that led, eventually, to O.S. prominence in the world market.

Remember the rule now says: The engine had to be sold BEFORE the cutoff date of Dec 31, 1955 – the Max I was sold before the cutoff date – it is a Period 1 legal engine. It is all about when the engine was sold – nothing else.
Ted

[Mike Schwartz]

The faipower.com web site has not been updated since 2008. You need to go to the 2015/2016 NFFS Competition web page for the most up to date Vintage fai rules and guidelines. The Vintage era’s start and stop dates have been revised since the faipower.com data was last entered in 2008. Other updates on engine eligibility are also on the NFFS web page.
MIke

[SIMON BLAKE]

The real issue is the excessive 4 second engine run advantage the Class 1 models get over Class 2 models, which are pretty much identical. If you run glow, the OS Max 1 .15 is way more powerful than any of the other glow engines. If you run diesels, there are some really potent diesels allowed in Class 1 including the Webra Mach 1, the AM 25 (which the rulebook lists as an AMA 2.47) and some others. The solution would be to up the engine run in Class 2 by 2 seconds which would give nine seconds hand launch, versus 11 seconds hand launch for vintage FAI class 1 models. As others have noted, Max 1 .15s are really hard to find.

[Bruce Hannah]

There is no need to add run time to the era 2 motor runs.The OS Max 3’s we are running are way more power than they had in 1956.The only reason it was allowed was it was thought that people could fly there Nost. A model in vintage FAI and most run a OS Max 3.This has made for a dominance in era 3 by using motors from 1963. I’ve flown in 22 vintage FAI contests and maxed out in 21 of them not because I’m some great flier but because there is that much power ,you have to work at dropping a flight.I also always VTO for the 13 sec. run you would need to see how high they get to believe it.The OS Max 1 and a reworked Green Head are close but the GH will brake ,I have been told they turn a 8×4 around 15K the Max 3 17K just my two cents.

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