RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 507 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Strange tune pipe and header problem
12-08-2004 12:02 PM  13 years agoPost 1
Goni

rrApprentice

Riyadh, Saudi Arabia

My Posts: All  Forum  Topic

Hi, I am using Hatori 90 3D tune pipe with the supplied header on R90SE. The problem I am facing is that the silicon tubing provided, to connect the bent header and the tune pipe is cracked just after a half tank. The one comes with the tune pipe last 4 tanks and a newly purchased just got a half tank. Did anyone experience the same thing before? Is this because of the incorrect allignment of the header and tunepipe or they exhibit the same behaviour.

Also, I bearly can hook up the clamp at the tune pipe where the slop starts so its a little shaky in the flight. Should I reduce the length of the pipe just a few mm to have a fine grip? Post your comments/experience.


Goni


Do i FeEL s0mEthin burniN

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
12-08-2004 06:03 PM  13 years agoPost 2
alawel

rrVeteran

Springfield Oregon

My Posts: All  Forum  Topic

Not much experience with two piece pipes on helis but I've spent a bunch of time with headers and pipes on planes. Does the coupler look burned where it's exposed to the exhaust? If so you may be too short on the pipe length or too lean on the engine mix. More likely it's what you eluded to in your post, the alignment is off a bit and the exhaust is killing the coupler....Alan

PM  EMAIL  Attn:RR  Quote
12-09-2004 08:31 AM  13 years agoPost 3
G.Man

rrProfessor

Bristol

My Posts: All  Forum  Topic

Use a PTFE coupler rather than silicon, they last a lot better..

Make sure the pipe is mounted properly, and cant flap about on the joiner, as this will cause it to tear on the metal of the header or pipe..

Don't Email me as I wont reply - PM Only (spam countermeasures)

PM  EMAIL  Attn:RR  Quote
12-09-2004 05:38 PM  13 years agoPost 4
ATHAM

rrVeteran

santa clara

My Posts: All  Forum  Topic

i just bought ptfe coupler 3/4" dia ID and 1"dia OD with 1/8" wall thickness.
let me know if you need it. i have to buy 6' min required i believe i will have at least 4' sitting around.

i'll send it to you 10 bucks per foot shipped to your door CONUS

thanks

PM  EMAIL  Attn:RR  Quote
12-09-2004 06:32 PM  13 years agoPost 5
hepsibar

rrApprentice

Perth WA

My Posts: All  Forum  Topic

It can be a pain - carry a few spares. I used to fly with an Irvine 36 F1 with tuned pipe. The engine was good but it liked eating manifold to pipe connectors for breakfast. I got between 3 - 15 flights per joiner.

If you use the type of joiner that is re-enforced with material they last a bit longer than plain silicone however when they start to go it is from the inside and the inner wall can split and come away restricting gas flow and choking your engine.

Empty Coffee Cup

PM  EMAIL  Attn:RR  Quote
12-10-2004 05:44 AM  13 years agoPost 6
Goni

rrApprentice

Riyadh, Saudi Arabia

My Posts: All  Forum  Topic

It was the allignment of the pipe and the coupler. I have set it up again and things seems to be working fine. Though the new silicon pipe is getting rough where the clamps fit and the clamps are getting lose too. I guess that is because of too much vibration but so far so good


Do i FeEL s0mEthin burniN

PM  EMAIL  HOMEPAGE  Attn:RR  Quote
WATCH
 1 page 507 views POST REPLY
HomeAircraftHelicopterEngines Plugs Mufflers Fuel › Strange tune pipe and header problem
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Monday, June 18 - 2:35 pm - Copyright © 2000-2018 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online