OS21M-05

[Joern Markset]

Looks like something new from OS
(Pictures stolen from @Niklas Edlund facebook)

 

[RaceMechaniX]

Looks like a nice engine particularly if they carry over the slugged crank from the cars.

 

[Joern Markset]

Looks like a nice engine particularly if they carry over the slugged crank from the cars.

Without knowing anything all, I`m willing to bet money on that the crankshaft is identical, maybe without the SG shaft.

 

[Jarcaines]

Tell me more!

 

[FloridaScaleBoater]

Can they be purchased?
From where?

 

[Niklas Edlund]

Basically the new O.S.Speed ”Special Edition” R21M-05 will be an Eurooean exclusive engine from us (Minicars Hobby Distribution in Sweden).

It’s not an engine that will be available through all O.S.Engine distributors world wide. It’s an European Special Edition engine (limited edition) through our (Minicars) B2B network only (we’re an O.S.Engine distributor in Europe). It will be available though our dealer network in the spring of this year.

It’s based on the upcoming new O.S.Speed R2105 on-road engine but with a black marine head and no carb.

That means it has an ”SG” style car DLC coated crank with updated heavier 4.5mm balance weights and a new 9 port sleeve that is matched to the new O.S.Speed crankcase.

 

[RaceMechaniX]

Niklas or Joern, Any chance either of you have the VZ-M inner head for the older OS 21? Part number: 23754730.

 

[Joern Markset]

Guys, this is the same concept as I’ve been trying to sell to you multiple times.
Thread 'OS R2104'
Sold - OS R2104

 

[anders-e]

Will have one of them with outboard crankshaft

 

[Niklas Edlund]

Update: the first deliveries to our Minicars dealer network in Europe is expected in June 2023 (awaiting the custom production of the cooling heads).

 

[Ron Drake]

is this 14mm crank or 14.5mm

 

[Jarcaines]

Will it be possible to get them in the US?

 

[Jerry Dunlap]

Will it be possible to get them in the US?

I would suspect you will be looking at some serious coinage to get that engine.

JD

 

[Joern Markset]

I would suspect you will be looking at some serious coinage to get that engine.

JD

Not so bad, my opinnion is that it is a fair price.
https://www.worldchampionproducts.com/en/marine/3354-osspeed-r21-m05-minicars-se-marine-engine.html

 

[Jarcaines]

Not bad at all!

 

[Joern Markset]

You may read a little more here:
http://www.osspeed.com/eng/2023/r2105/index.html

 

[Brandon Atwell]

Niklas, will there be a flywheel conversion available for these engines? Or any sort of adapters to put a marine collet setup on there?

 

[Joern Markset]

R2105 coming in next week, I will have waterjacket and flywheel made within a short time

 

[Kris Flynn]

interesting back plate...

 

[Joern Markset]

interesting back plate...

It is just a steel insert to reduce wear