RunRyder RC
 3  Topic Subscribe
WATCH
 1 page 549 views
Scorpion Power Scorpion Power
HelicopterEngines Plugs Mufflers Fuel › Screw on the bottom of the SB-16 muffler?
10-21-2004 02:48 AM  13 years agoPost 1
getfurious

rrVeteran

Exeter, NH

My Posts: All  Forum  Topic

I lost the screw during one flight, did not notice any difference throughout the flight (not sure where I lost it though). Is that screw needed and should I fly without it? Why is it there? Can I JB Weld a replacement there?

A skilled pilot without flight discipline is a walking time bomb.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2004 02:53 AM  13 years agoPost 2
Bushy

rrVeteran

Tucson, AZ

My Posts: All  Forum  Topic

That is for your pressure nipple if you mount the muffler on the other side of the heli. Should be able to find a substitute at the local shop.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-21-2004 03:06 AM  13 years agoPost 3
vols77

rrApprentice

Hills of Tennessee

My Posts: All  Forum  Topic

If you using an OS motor, losing the screw will cause you to drop the pressure to the fuel tank/pump making the motor lean out.

If your using a YS motor, losing the screw will just let the exhaust come out the screw hole maybe effecting motor performance a tad from a change in exhaust backpressure.

I just use JB weld to glue the screw/pressure nipple into the muffler.

Rick

PM  EMAIL  Attn:RR  Quote
10-21-2004 03:32 AM  13 years agoPost 4
jerrythercpilot

rrVeteran

--South Florida --

My Posts: All  Forum  Topic

You could go to a place like Homey Depot and buy some Al braze material. You can braze the hole shut with a regular propane torch.

Speaking of which, I bought one of those nice machined SB-16 brackets from a guy here on RR. The bracket works really well on my Fury. One word of caution though. Its too dam stout and likely to cause more extensive damage in a crash. I would recommend weakening the bracket some or making one out of nylon so it'll "give" in a crash.

PM  EMAIL  GALLERY  Attn:RR  Quote
10-29-2004 06:23 AM  13 years agoPost 5
YSRRider

rrElite Veteran

usa

My Posts: All  Forum  Topic

i have an SB 70 on an OS70 do i replace the screw with the nipple or do i drill a whole in the pipe, no one has been able to clearify this for me!

this joint aint as resourceful as it used to be!!!!!


also, im assuming that the manifold should be fasing the bottom of the motor? i put the screw towards the head (no instructions)
glad i didnt drill into the pipe (yet)

PM  EMAIL  GALLERY  Attn:RR  Quote
10-29-2004 09:21 AM  13 years agoPost 6
fritzthecat

rrKey Veteran

Virginia Beach, VA

My Posts: All  Forum  Topic

The SB70 has a hole for the pressure nipple in the exhaust manifold stub. Look on one side next to the two O rings, there is a screw. Take the screw out and install the included brass nipple with a little JBWeld.
It should be facing so the fuel line has a nice run to the fitting on the tank. In my Futura that would be to the front, in an Raptor to the back.

Fritz


'Send Money, Women and Guns!'

PM  EMAIL  GALLERY  Attn:RR  Quote
10-30-2004 02:00 AM  13 years agoPost 7
docloc

rrApprentice

WI, Osceola

My Posts: All  Forum  Topic

I also used JBWeld to hold the screw in the extra hole. I used a long setscrew and added a nut to double hold it after the factory screw fell out.

PM  EMAIL  HOMEPAGE  GALLERY  Attn:RR  Quote
WATCH
 1 page 549 views
Scorpion Power Scorpion Power
HelicopterEngines Plugs Mufflers Fuel › Screw on the bottom of the SB-16 muffler?
 Print TOPIC  Make Suggestion 

 3  Topic Subscribe

Saturday, November 18 - 3:02 am - Copyright © 2000-2017 RunRyder   EMAILEnable Cookies

Login Here
 New Subscriptions 
 Buddies Online