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HelicopterMain Discussion › Anyone tried the Zimmermann Rocket Z-pipe ?????
01-28-2007 12:27 AM  10 years agoPost 1
Yug

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01-28-2007 12:31 AM  10 years agoPost 2
Droid

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Makes a lovely bottom G when played!!

What are you gonna do with it, use it as a vase!

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01-28-2007 12:33 AM  10 years agoPost 3
rookie5

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lmao droid

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01-28-2007 12:36 AM  10 years agoPost 4
Droid

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Seriously what do you intend using it on?? Have you considered Weston UK??

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01-28-2007 12:43 AM  10 years agoPost 5
GimbalFan (RIP)

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oz

3.3 TT PV0109 muffler
5.3 Zimmerman Rocket Z-pipe
6.5 CY MP2q muffler

Any improvement in power over the CY MP2q?

op-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-thwop-t

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01-28-2007 12:57 AM  10 years agoPost 6
Yug

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I'm just trying to educate myself a bit and am interested in trying a proper tuned pipe. After a few conversations with folk, pipes can offer improved power delivery, stabalise RPM and allow use of lower nitro. I'm currently using MP2s on all my helis, but one has NOT got the extra webbing weld so it may fall to bits at some point. I don't have any complaints with the MP2 what so ever, but it's probably about time I explored pipes.

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01-28-2007 01:17 AM  10 years agoPost 7
Droid

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but it's probably about time I explored pipes.
Gynaecology is a fascinating subject, but not so different from the job i do now.. i work with a bunch of c*@ts anyway!!

Seriously though..
In my experience they are pain in the arse to mount and and the silicon couplings can take some grief. And if it comes loose bye bye blades!!

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01-28-2007 01:19 AM  10 years agoPost 8
Yug

rrMaster

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What problems have you had with the silicon couplings ?

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01-28-2007 01:21 AM  10 years agoPost 9
Droid

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Well the newer teflon ones from weston uk are good but the std model shop issue stuff don't go near it.

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01-28-2007 01:24 AM  10 years agoPost 10
ESWLFSE

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Liberty Hill, TX

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The silicone couplings will last quite some time if there is a near-zero gap between the header and pipe.

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01-28-2007 01:25 AM  10 years agoPost 11
Yug

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Does the silicon get chewed or something ?

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01-28-2007 01:27 AM  10 years agoPost 12
Droid

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Problem with near zero gaps are RF interference from the two parts touching. The silicon seems to be affected by the flex and heat and gives up when you dont want it to!! Like i said though weston do a teflon lined coupler that stops this.

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01-28-2007 01:37 AM  10 years agoPost 13
ESWLFSE

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It just slowly deteriorates from exposure to exhaust gases becoming thinner and thinner in that area. A near zero gap is the key.

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01-29-2007 08:04 PM  10 years agoPost 14
Barney

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Inverness Scotland

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When I raced boats the way we got round the joint failure problem was by using a PTFE joiner.

You push a 2" length of PTFE into the silicone which is approx 3/4" longer each end and use cable ties/or clamps either side of the PTFE. The PTFE tube withstands the heat but is quite rigid and does not seal as effectively as the Silicone. Hence you need to use both.

The PTFE does shrink slightly in the middle at the joint if you leave a 1/4-1/2 gap which prevents the pipes from touching.

You will still find the silicone degrading but not nearly as quickly. Remember when the joint leaks the motor will go lean.

Other things that help.. are to have the joint in good airflow or with boats we silver soldered 2 turns of small bore copper pipe just below the joint on the manifold and connected to a water scoop behind the prop so the joint was watercooled.

Later pipes also had a cooling jacket on them to cool the exhaust gasses for more performance (cooling the charge) Dave Marles rings a bell for the performance boat stuff

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01-29-2007 09:16 PM  10 years agoPost 15
Droid

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Other things that help.. are to have the joint in good airflow or with boats we silver soldered 2 turns of small bore copper pipe just below the joint on the manifold and connected to a water scoop behind the prop so the joint was watercooled.

Later pipes also had a cooling jacket on them to cool the exhaust gasses for more performance (cooling the charge) Dave Marles rings a bell for the performance boat stuff
Hmmm i think this is gonna be a problem for a helicopter

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01-29-2007 10:04 PM  10 years agoPost 16
Barney

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Hey droid..you not flown phoenix yet?

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01-29-2007 10:08 PM  10 years agoPost 17
Droid

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Yes wasn't too impressed then i discovered the upgrade patches, lot more realistic now!!

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01-29-2007 10:29 PM  10 years agoPost 18
Barney

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Inverness Scotland

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Phoenix..You just dip it in the water every now and then to keep it cool

Phoenix..really enjoying it but miss the online I had with G3..

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HelicopterMain Discussion › Anyone tried the Zimmermann Rocket Z-pipe ?????
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