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  #21  
Old 05-06-2017, 03:39 PM
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Sam Buchanan Sam Buchanan is offline
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Quote:
Originally Posted by Toobuilder View Post

To those who are going to use regular channel lock pliers on them, use caution: they store a lot of energy and slip out of the jaws easily.
These pliers will prevent a lot of creative vocabulary (and possibly personal injury) when using spring clamps:

http://www.aircraftspruce.com/catalo...ickkey=3008670

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  #22  
Old 05-15-2017, 06:08 AM
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Bob Martin Bob Martin is offline
 
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Default Help with purchase

This sounds great, would like to do this on 3 engines.

Would someone help with info?
Intake tubes from Summit....good link!
Roto clamps= HC-34 PDF said lot of 500 but Toolbuilder got 100 and was selling some.
Oil return lines..McMaster-Carr ? P/N ??
Would be good to have all the info in one place.
Thanks for all this help....wonderful idea.
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James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
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  #23  
Old 05-15-2017, 06:56 AM
madhun madhun is offline
 
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Nice idea. Used regularly on really cranky tuned turbo inlets and compressor outlets sitting atop glowing red exhaust manifolds. Should handle the job satisfactorily.
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  #24  
Old 05-15-2017, 08:19 AM
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Toobuilder Toobuilder is offline
 
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Quote:
Originally Posted by Bob Martin View Post
This sounds great, would like to do this on 3 engines.

Would someone help with info?
Intake tubes from Summit....good link!
Roto clamps= HC-34 PDF said lot of 500 but Toolbuilder got 100 and was selling some.
Oil return lines..McMaster-Carr ? P/N ??
Would be good to have all the info in one place.
Thanks for all this help....wonderful idea.
I got my bag of clamps from MSC Direct.

https://www.mscdirect.com/product/de...rItem=48690382

I dont know the proper PN for the oil return line clamps, but they are also manufactured by RotoClip and should be available from MSC.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

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  #25  
Old 05-15-2017, 03:01 PM
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Bob Martin Bob Martin is offline
 
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Default oil return line clamps

Thanks Michael,
Good info.

Anybody know the P/N of the oil return line clamps? Assuming the standard hose.....
Thanks
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Bob Martin
RV-6, 0-360 Hartzell C/S, Tip up, 1150+TT
James extended cowl/plenum, induction, -8VS and Rudder. TSFlightline hoses. Oregon Aero leather seats.
D100-KMD150-660-TT ADI2- AS air/oil seperator. Vetterman exhaust with turndown tips.
Louisa, Virginia KLKU N94TB
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  #26  
Old 05-15-2017, 04:16 PM
rv7charlie rv7charlie is offline
 
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Euro & Asian car makers use flat wound versions of those clamps. Much better for silicone (more surface area), but harder to find.
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  #27  
Old 05-15-2017, 07:39 PM
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Toobuilder Toobuilder is offline
 
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Actually, the new American OEMs use the flat style too, and Roto Clip is the likely supplier since the flat style is also in their catalog. I switched to the wire type after reading the product specs for both. The higher specific clamping pressure of the wire is what I'm looking for in this application. Since neither the tubes or sump have a retention bead, I'm looking for a high 360 degree point seal.
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WARNING! Incorrect design and/or fabrication of aircraft and/or components may result in injury or death. Information presented in this post is based on my own experience - Reader has sole responsibility for determining accuracy or suitability for use.

Michael Robinson
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Harmon Rocket II -SDS EFI instalation in work
RV-8 - Flying
1940 Taylorcraft BL-65 -flying
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  #28  
Old 05-18-2017, 09:49 PM
160kt 160kt is offline
 
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McMaster sells quantity of 10 clamps for $5.73
https://www.mcmaster.com/#5324K55
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  #29  
Old 06-28-2017, 04:55 PM
LordofWar LordofWar is offline
 
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Location: Ft. Worth, Tx
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Post Feedback

My Oil return lines are leaking and looks like I have the same issues as everyone else.

Whats the feedback on the Constant-Tension Spring Clamps from someone who used them? I'm planning to get them from McMaster Carr https://www.mcmaster.com/#5324k55/=189qeo8

Planning to get the below sizes for O-320(correct me if I'm wrong)
2 1/8" Clamp - for Intake Hose
5/8" Clamp - for oil return hose

Your input is much appreciated.
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  #30  
Old 06-28-2017, 09:46 PM
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bruceh bruceh is offline
 
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I did this on the oil return lines and it has been leak free for the last 2 years.



I don't recall the size of the constant tension clamps. I got a foot of oil hose from the local auto parts store and cut it into 4 pieces.
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