Author Topic: Wanted: Rear Intake O.S. Max .40 SR engine (Read 1385 times)

Les Akre · « **on:** February 05, 2023, 05:54:16 PM »

Looking for an rear intake side exhaust O.S. .40 SR engine, preferably the control line version, but r/c version ok. These had both conventional, and dykes type rings during production. I prefer the dykes version, but will take what I can get. I prefer as close to new as possible. Let me know what you have and price.

Les

C.T. Schaefer · « **Reply #1 on:** February 06, 2023, 05:35:05 AM »

Les, I have one that I could sellbut I have not looked at it for a while. If interested send message and I will dig it out. Ran nice in a carrier plane a 'few' years ago. T

BillLee · « **Reply #2 on:** February 06, 2023, 06:52:29 AM »

Quote from: Les Akre on February 05, 2023, 05:54:16 PM

Looking for an rear intake side exhaust O.S. .40 SR engine, preferably the control line version, but r/c version ok. These had both conventional, and dykes type rings during production. I prefer the dykes version, but will take what I can get. I prefer as close to new as possible. Let me know what you have and price.

Les

Les, your post begs the question: what for?

Bill

Mike Hazel · « **Reply #3 on:** February 06, 2023, 10:41:03 AM »

Hey Les,

Doing some Nostalgia Rat? I ran this engine for a little while before moving on to the K&B 40S. Still have it!

Mike

Les Akre · « **Reply #4 on:** February 06, 2023, 04:19:54 PM »

Bill and Mike

Yes, I have long threatened to build a copy of my 100 mile rat race winning airplane from maannny decades ago, 1982 to be exact. Yes, a nostalgia thing to be sure, and also to perform some nostalgia flights and possibly a demo race for those who may still have these things kicking around and are brave (foolish??) enough to join in.

I've also had visions of testing a Quickie Rat legal engine in a full bodied rat just to see how much faster they would be...

Les

BillLee · « **Reply #5 on:** February 06, 2023, 07:31:14 PM »

Quote from: Les Akre on February 06, 2023, 04:19:54 PM

Bill and Mike

Yes, I have long threatened to build a copy of my 100 mile rat race winning airplane from maannny decades ago, 1982 to be exact. Yes, a nostalgia thing to be sure, and also to perform some nostalgia flights and possibly a demo race for those who may still have these things kicking around and are brave (foolish??) enough to join in.

I've also had visions of testing a Quickie Rat legal engine in a full bodied rat just to see how much faster they would be...

Les

Cool!

Les Akre · « **Reply #6 on:** February 07, 2023, 03:13:51 AM »

Quote from: C.T. Schaefer on February 06, 2023, 05:35:05 AM

Les, I have one that I could sellbut I have not looked at it for a while. If interested send message and I will dig it out. Ran nice in a carrier plane a 'few' years ago. T

PM sent.

Les

Air Ministry . · « **Reply #7 on:** February 07, 2023, 05:05:37 PM »

http://sceptreflight.com/Model%20Engine%20Tests/OS%20Max%2040%20SR.html

Marine ones about the same / But mightve got wet .

http://sceptreflight.com/Model%20Engine%20Tests/OS%20Max%2045R-SR%20Marine%20%281978%29.html

Les Akre · « **Reply #8 on:** February 10, 2023, 04:02:20 AM »

Quote from: Air Ministry . on February 07, 2023, 05:05:37 PM

http://sceptreflight.com/Model%20Engine%20Tests/OS%20Max%2040%20SR.html

Marine ones about the same / But mightve got wet .

http://sceptreflight.com/Model%20Engine%20Tests/OS%20Max%2045R-SR%20Marine%20%281978%29.html

PM sent

frank williams · « **Reply #9 on:** February 10, 2023, 08:50:19 PM »

When pipe stunt first started I used one on a plane with a metal speed pipe. It ran at about 12k and was great. Just like a little sewing machine I thought. Kinda like electrics today. I still think rear intake motors make alot of sense for stunt motors.

BillLee · « **Reply #10 on:** February 10, 2023, 11:29:04 PM »

Quote from: Les Akre on February 05, 2023, 05:54:16 PM

Looking for an rear intake side exhaust O.S. .40 SR engine, preferably the control line version, but r/c version ok. These had both conventional, and dykes type rings during production. I prefer the dykes version, but will take what I can get. I prefer as close to new as possible. Let me know what you have and price.

Les

I think I have one, Les. At least the memory says so, I'd actually have to find it! :-)

What would it be worth to you?

Les Akre · « **Reply #11 on:** February 11, 2023, 06:58:17 PM »

Hi Bill

If you eventually find it, and it's the drum valve version with dykes ring, send me some pics and we can go from there.

Cheers, Les

Nigel Tarvin · « **Reply #12 on:** February 20, 2023, 09:32:05 PM »

One on ebay: https://www.ebay.com/itm/234906402103?epid=1123802582&hash=item36b1833d37:g:z-4AAOSwQg9j9B-a&amdata=enc%3AAQAHAAAA4OnGkDQRxlZFTLWcuWPwzByan8cCemSBD8dFMVyhlEG3NTxVkemsjwxs5E%2FG2DQvrRW9X3iIpqNgRHAqcjA7n88NooC3Gask9rV0YCUTqXP1%2B%2BNIooCzDsDcoWvPcsz0YCDfszzMuzyUFsz8JOHTqlxlEa5oLjkEByCdmBjz4yN6XyfjVDskTPRfwsSR714LG0sew67T5uYWNwlGogSMptCeLxZSgxEo1u%2B2IzsUz9orvYI0iWK8n2%2F%2FhSps1sr7qFEVllUxePFQsBGD%2F6GOQVxZVF28xl37ASqF%2FbaYHtr7%7Ctkp%3ABk9SR57z46POYQ

Les Akre · « **Reply #13 on:** February 20, 2023, 10:59:53 PM »

Thanks Nigel, I somehow missed that one...!

Les

Nigel Tarvin · « **Reply #14 on:** February 21, 2023, 08:35:22 PM »

Good luck!

GallopingGhostler · « **Reply #15 on:** February 22, 2023, 08:52:06 PM »

Quote from: Nigel Tarvin on February 20, 2023, 09:32:05 PM

One on ebay:
Code: [Select]
https://www.ebay.com/itm/234906402103?epid=1123802582&hash=item36b1833d37:g:z-4AAOSwQg9j9B-a&amdata=enc%3AAQAHAAAA4OnGkDQRxlZFTLWcuWPwzByan8cCemSBD8dFMVyhlEG3NTxVkemsjwxs5E%2FG2DQvrRW9X3iIpqNgRHAqcjA7n88NooC3Gask9rV0YCUTqXP1%2B%2BNIooCzDsDcoWvPcsz0YCDfszzMuzyUFsz8JOHTqlxlEa5oLjkEByCdmBjz4yN6XyfjVDskTPRfwsSR714LG0sew67T5uYWNwlGogSMptCeLxZSgxEo1u%2B2IzsUz9orvYI0iWK8n2%2F%2FhSps1sr7qFEVllUxePFQsBGD%2F6GOQVxZVF28xl37ASqF%2FbaYHtr7%7Ctkp%3ABk9SR57z46POYQ

FYI, you can shorten the list to: https://www.ebay.com/itm/234906402103 , all before the first question mark. Others who click on it will still be taken to the item direct. Rest is coded information that may also contain some of your own personal info. (Just saying.)

Paul Wescott · « **Reply #16 on:** February 26, 2023, 12:46:43 AM »

Pricey!

Les Akre · « **Reply #17 on:** February 26, 2023, 03:03:33 PM »

Yes, about 50 bucks more than my self imposed limit...

Les

Nigel Tarvin · « **Reply #18 on:** March 11, 2023, 10:02:51 PM »

Here's another:
https://www.ebay.com/itm/165976844934?epid=5008862882&hash=item26a4fdaa86:g:ZwIAAOSwJnJkC8cJ&amdata=enc%3AAQAHAAAA4KSmWeTnkn25X4PWY8FLP6odhdOReDRpoOMk2zD4DC0jb9T9PtmfB6lPkcaE%2B8lhR9W5vHriD1%2FdZNsoSbqe7UmO2nTcmdSTBaYGy4yKjUXr48Yf56ZWyoeOSfx2MTsFGlroUPkdD3RrL4Mby4aZgaOhJeHwuofYdMOKHf3zDiYB4KLtYkLgsz8QVjopGC%2Bv0VE6jx92bfsPP1vLOKC4XXkkVeF%2FJxAuEAB51RAT1Z%2F74ALWF5cxlqaNwM2%2FWFNCnWjj7V%2FWVJQ4gXqtRtdSLO6jo7JiE%2FTFDSXFo%2BFfZRZ4%7Ctkp%3ABk9SR-Dy-8LaYQ

Les Akre · « **Reply #19 on:** March 20, 2023, 12:01:04 AM »

Thanks Nigel

This one fit the budget.

I have what I need now, thanks to everyone for their help.

Les

Nigel Tarvin · « **Reply #20 on:** March 20, 2023, 08:18:09 PM »

Excellent!