Notices
Everything Diesel Discuss R/C Diesel engines here.

45% ether??

Old 11-23-2022, 05:25 PM
  #1  
franchi
Thread Starter
 
Join Date: Aug 2008
Location: blain, PA
Posts: 274
Received 1 Like on 1 Post
Default 45% ether??

Hello All:

I recently purchased two MVVS Diesel engines. They are a 1.5 and a 2.0 cc in size. The instruction that were included with the engines specified a 45% ether content in the fuel. Why does MVVS state that such a high percentage is required? I have not tried this mix yet as I have been running a 30% mix of ether. Would 45% ether make starting easier?

Tia,

Franchi







Old 11-28-2022, 10:16 PM
  #2  
Ployd
 
Join Date: Aug 2006
Location: Greensborough, AUSTRALIA
Posts: 79
Likes: 0
Received 0 Likes on 0 Posts
Default

I have read that also and in the light of what we know the 45% mix would be a waste of ether, furthermore I would venture to suggest that the ingredients listed would be more for local consumption (in the Czeck republic).
I would use 30 ether, 45 kerosine and 25 castor (not synthetic) and have done so for both the 1.5 and 2.0cc engines. It isn't rocket science.
Ployd in OZ
Old 11-29-2022, 03:26 PM
  #3  
franchi
Thread Starter
 
Join Date: Aug 2008
Location: blain, PA
Posts: 274
Received 1 Like on 1 Post
Default

Hello Ployd:

Have you had any experience with a Diesel fuel containing 45% ether? If so, what were your observations?


Franchi
Old 11-29-2022, 05:06 PM
  #4  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,231
Received 59 Likes on 56 Posts
Default

The engine will make less power. It should however start easier and throttle better if R/C equipped. The old Drone engines with their fixed compression heads ran a mixture of ether and IIRC 70wt oil only. No kerosene. Not very powerful, but they ran.
Old 11-29-2022, 06:28 PM
  #5  
qazimoto
My Feedback: (1)
 
Join Date: Sep 2005
Location: Central Coast NSW, AUSTRALIA
Posts: 1,409
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by franchi View Post
Hello All:

I recently purchased two MVVS Diesel engines. They are a 1.5 and a 2.0 cc in size. The instruction that were included with the engines specified a 45% ether content in the fuel. Why does MVVS state that such a high percentage is required? I have not tried this mix yet as I have been running a 30% mix of ether. Would 45% ether make starting easier?

Tia,

Franchi
I vaguely remember that the MVVS recommended fuel mix didn't include any Ignition Improver and that the extra Ether was meant to replace it. Perhaps Cetane Improver was difficult to obtain in Soviet era Czech society. As Ployd said above, "it ain't rocket science".

Last edited by qazimoto; 11-29-2022 at 11:55 PM.
Old 11-30-2022, 03:26 PM
  #6  
Ployd
 
Join Date: Aug 2006
Location: Greensborough, AUSTRALIA
Posts: 79
Likes: 0
Received 0 Likes on 0 Posts
Default

Hi Franchi.
I have never used 45% ether in my fuels but do use 30% in my 0.25cc engines only as they require a bit more help to start. For sure the engine will start easier (for a beginner) but if you read your instruction sheet you will see a second fuel formula for general running which recommends Amyl Nitrite as the ignition improver.
Personally, for running in a new engine the tried and true 33/33/33 mix is the way to go then switch to less caster and ether and more kero.

Ployd in OZ

Last edited by Ployd; 11-30-2022 at 03:29 PM.
Old 11-30-2022, 03:37 PM
  #7  
franchi
Thread Starter
 
Join Date: Aug 2008
Location: blain, PA
Posts: 274
Received 1 Like on 1 Post
Default

Hi Ployd:

Thanks for the replies!

Franchi
Old 11-30-2022, 06:36 PM
  #8  
1QwkSport2.5r
 
1QwkSport2.5r's Avatar
 
Join Date: Oct 2006
Location: Cottage Grove, MN
Posts: 10,231
Received 59 Likes on 56 Posts
Default

Originally Posted by Ployd View Post
Hi Franchi.
I have never used 45% ether in my fuels but do use 30% in my 0.25cc engines only as they require a bit more help to start. For sure the engine will start easier (for a beginner) but if you read your instruction sheet you will see a second fuel formula for general running which recommends Amyl Nitrite as the ignition improver.
Personally, for running in a new engine the tried and true 33/33/33 mix is the way to go then switch to less caster and ether and more kero.

Ployd in OZ
Amyl Nitrate is not easily obtainable in the USA; most guys here that mix their own fuel use Amsoil Cetane Boost which is 2-ethylhexyl nitrate which is very similar to amyl nitrate. I have a small bottle (12oz I think) that will last for a LONG time. 2% in a quart amounts to about a capful or so.
Old 12-01-2022, 03:20 AM
  #9  
qazimoto
My Feedback: (1)
 
Join Date: Sep 2005
Location: Central Coast NSW, AUSTRALIA
Posts: 1,409
Likes: 0
Received 3 Likes on 3 Posts
Default

Originally Posted by 1QwkSport2.5r View Post
Amyl Nitrate is not easily obtainable in the USA; most guys here that mix their own fuel use Amsoil Cetane Boost which is 2-ethylhexyl nitrate which is very similar to amyl nitrate. I have a small bottle (12oz I think) that will last for a LONG time. 2% in a quart amounts to about a capful or so.
Most people all over are now using the Amsoil as a Diesel Ignition Improver (DII). The percentage depends on the Cetane level of your oil mostly. I use 14 ml per Litre of mixed fuel. It works very well. Our local kero is of quite good quality. So we don't need so much. Before the Amsoil we could get Iso Propyl Nitrate (IPN) and the pure 2-EHN. Interestingly Amyl Nitrite has been taken off the dangerous list and is now theoretically available from Australian Pharmacies. There seems to be some confusion with the press as to whether the chemical is Amyl Nitrite or Nitrate. I'll assume the former.

Amsoil apparently works just as well as a Cetane Booster, according to locals who have tested both it and Amyl Nitrate, so there's no need to use the others. Amyl Nitrite needs to be be used in higher percentages to be an effective DII. It was quite easy to get when I was a kid.

Last edited by qazimoto; 12-01-2022 at 03:24 AM.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright © 2022 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.