Sold OS Speed B2104 (huge discount)

[David Krienke]

The black one, part # 13952 is an OS Speed engine, a little better all the way thru.
However, I have not had any of the silver, part # 13951, so have not been able to compare side by side.
I believe you will be satisfied with a newer OS engine no matter what type you may pick.

Now if more of you guys across the pond would put your love and bucks on OS engines, it might be an idea looking into the flywheel option for SG shafts. ;-)

https://www.os-engines.co.jp/english/timeline/O.S.1936_2020.pdf

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That is the problem on the sg it just needs a thinner flywheel so you can get a collet on it. I would love to have a flywheel with only a few mm inner thickness. How hard would it be to make a few I am sure they would sell on here all day long if we could use a standard collet.

 

[Joern Markset]

That is the problem on the sg it just needs a thinner flywheel so you can get a collet on it. I would love to have a flywheel with only a few mm inner thickness. How hard would it be to make a few I am sure they would sell on here all day long if we could use a standard collet.

It is not hard at all, I mean people have been traveling to the moon for quit some time, sooo.....
It is all about how much effort one should put into it. If I needed them my self they would have been available already
Ref standard collet, the threads are the same on the SG shaft, it just has to be chopped off, no big deal, and as you say a shorter flywheel.
The main issue today is that most things has become rather expensive compared to what it was just a few years back, and many people invest a lot less in modelhobby. And, making custom parts in low quantities.... Well,

 

[David Krienke]

It is not hard at all, I mean people have been traveling to the moon for quit some time, sooo.....
It is all about how much effort one should put into it. If I needed them my self they would have been available already
Ref standard collet, the threads are the same on the SG shaft, it just has to be chopped off, no big deal, and as you say a shorter flywheel.
The main issue today is that most things has become rather expensive compared to what it was just a few years back, and many people invest a lot less in modelhobby. And, making custom parts in low quantities.... Well,

I totally understand on having to spend the time and materials to make them in such small batches. I just know I have seen about 6 or 7 Car engines on youtube and ebay that I would like to try someday If I had a easy to throw on flywheel for the sg shaft. Some of these new car engines are pretty tricked out for a good price I am seeing lately.

 

[Joern Markset]

I totally understand on having to spend the time and materials to make them in such small batches. I just know I have seen about 6 or 7 Car engines on youtube and ebay that I would like to try someday If I had a easy to throw on flywheel for the sg shaft. Some of these new car engines are pretty tricked out for a good price I am seeing lately.

The VZ-M flywheel kit did almost fit, could have had 3-4 mm more threads and it would have been like kuk i Kari
When you say standard collet, what is that in particullar?

 

[Timbo Whalen]

The black one, part # 13952 is an OS Speed engine, a little better all the way thru.
However, I have not had any of the silver, part # 13951, so have not been able to compare side by side.
I believe you will be satisfied with a newer OS engine no matter what type you may pick.

Now if more of you guys across the pond would put your love and bucks on OS engines, it might be an idea looking into the flywheel option for SG shafts. ;-)

https://www.os-engines.co.jp/english/timeline/O.S.1936_2020.pdf

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Joern- could you shed any light on the OS Inflight Needle Valve #OSM71703009, please?....they seem to have disappeared here in the US, and dealers are saying they don't know if or when they'll be available again.

 

[Joern Markset]

Joern- could you shed any light on the OS Inflight Needle Valve #OSM71703009, please?....they seem to have disappeared here in the US, and dealers are saying they don't know if or when they'll be available again.

View attachment 313685

Been trying to get hold of them my self, and have got the same answer every time.

 

[Timbo Whalen]

Been trying to get hold of them my self, and have got the same answer every time.

A couple of bigger dealers here are saying April 2023 availability now.

 

[David Krienke]

The VZ-M flywheel kit did almost fit, could have had 3-4 mm more threads and it would have been like kuk i Kari
When you say standard collet, what is that in particullar?

Same collet like you have there . if that flywheel could be put in your mill and thinned in the middle would probably work fine I would think .

 

[Brandon Atwell]

The files for those Novarossi SG conversions are out there somewhere, glad we still have one

 

[RaceMechaniX]

If you can find the OS flywheels they will fit and you can use

Joern- could you shed any light on the OS Inflight Needle Valve #OSM71703009, please?....they seem to have disappeared here in the US, and dealers are saying they don't know if or when they'll be available again.

View attachment 313685

I ordered one recently from Amain hobbies. It was backordered, but after a month it was in stock and mailed to me.

 

[Joern Markset]

The files for those Novarossi SG conversions are out there somewhere, glad we still have one

It is also possible to make new files

 

[David Krienke]

It is also possible to make new files

That's awesome. I bet they all use the same cone taper now days as well. I wish you could turn out some of these. Love it.

 

[Joern Markset]

That's awesome. I bet they all use the same cone taper now days as well. I wish you could turn out some of these. Love it.

Better to make them for the std cone, same as the clutch flywheel use and that is provided with the engine.
I’ll see if there could be an opening. Still waiting for surgery and kind of disabled both physically and mentally

 

[Timbo Whalen]

Yeah, it's the R2104 I've been looking at.

Joern, have you ever put a degree wheel, or used Marty Davis' EAS program, to check the exhaust, transfer, boost, and rotor timing on one of those R2104 engines?

 

[Timbo Whalen]

Better to make them for the std cone, same as the clutch flywheel use and that is provided with the engine.
I’ll see if there could be an opening. Still waiting for surgery and kind of disabled both physically and mentally

Yes, that would be best to implement the same car/buggy engine shaft architecture if designing a belt start flywheel.

By the way, best wishes on your surgery and health concerns.

 

[Joern Markset]

Joern, have you ever put a degree wheel, or used Marty Davis' EAS program, to check the exhaust, transfer, boost, and rotor timing on one of those R2104 engines?

No, I have not measured any of the newer engines.

 

[bob miller]

would the os outboard crank fit into any of those car motors ????? thanks ....bob

 

[Brandon Atwell]

None of the recent engines, no. Believe the current OPS outboard and inboard share the same bore/ stroke as the OS XM.
However, I do think the BP outboard shares the same bore/ stroke as the R2104/ 2105.
The B2104 should be able to use older 14mm Novarossi outboard cranks though, or cranks from Rody’s recent OS outboard

 

[Rody Roem]

Been trying to get hold of them my self, and have got the same answer every time.

Hi Joern,

I have been informed by OS that this product is discontinued unfortunately.

 

[Joern Markset]

Hi Joern,

I have been informed by OS that this product is discontinued unfortunately.

Hello Rody,
Yes, I got the exact same message