Notices
RC Fuels Nitromethane, Castor Oil, Synthetic, heli fuel, 4 stroke, etc...Fuel Q&A is here!

Proper Mixing procedures

Old 03-31-2004, 07:48 PM
  #1  
Parkerm
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Jun 2002
Location: Carlsbad, NM
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default Proper Mixing procedures

I have all the ingredients, now I want to mix small test batches for my various engines. I was looking at buying a 500ml graduated cylinder to mix in. The pyrex would be clearest, but I know I'll break it. Some plastics will cloud if some chemicals are used. Will polypropylene stand up to methanol and nitro without clouding?
Old 04-01-2004, 05:24 AM
  #2  
XJet
Banned
 
Join Date: Mar 2003
Location: Tokoroa, , NEW ZEALAND
Posts: 3,848
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Proper Mixing procedures

Yes, regular plastic measuring vessels are quite fuel-proof.

The big problem with them however, is that they're often not very accurate.

When I went shopping for such things I found that all the ones I looked at were slightly tapered -- yet the graduations were all evenly spaced and the bottom was slightly domed upwards.

Sure enough, when I filled the measuring cup to the 200ml mark (the second graduation), poured its contents into another cup until it showed 100ml left (the first graduation -- which should have meant that the second cup now also had 100ml) -- empting the measuring cup and pouring the contents of the second cup back into it showed that the calibration was way-out.

According to the measuring cup, the 100ml I'd poured out (the difference between 100ml and 200ml) was now about 115ml, because the taper and domed bottom were obviously causing the linear graduations to be wrong.

So, look for a measuring cup with *straight* sides and a flat bottom.
Old 04-02-2004, 10:13 AM
  #3  
Waco Driver
Senior Member
 
Join Date: Jan 2003
Location: Paris, ON, CANADA
Posts: 183
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Proper Mixing procedures

I use a 1000 ml glass laboratory graduate which was given to me over 40 years ago. It has parallel sides and I find it excellent for getting exact mixes. 1000 ml is just the right amount for experimental purposes.
Old 04-03-2004, 11:52 AM
  #4  
NitroWoman
Senior Member
 
NitroWoman's Avatar
 
Join Date: Jun 2002
Location: Venus
Posts: 347
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Proper Mixing procedures

I use the 1000ml polypropelene cylinder. It is accurate and has been standing up to fuel for years. [link]http://www.labsafety.com/store/product_group.asp?dept_id=10091&parent_id=570[/link][8D]
Old 04-03-2004, 11:56 AM
  #5  
Parkerm
Senior Member
Thread Starter
My Feedback: (6)
 
Join Date: Jun 2002
Location: Carlsbad, NM
Posts: 157
Likes: 0
Received 0 Likes on 0 Posts
Default RE: Proper Mixing procedures

Thanks all...just what I needed to know

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 -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.