Webra Advice Needed
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- Dane McGee
- Posts: 885
- Joined: Fri Feb 21, 2003 1:57 pm
- Location: Greenville, Texas
Webra Advice Needed
Hey guys, I need some advice from someone who runs webras. I have alot of experience with bladders but danged if I can get the webras to hold a needle?!?![B)] I've checked all bolts/screws, everythings tight.......I've tried all the bladder fixes and I still can't get it to hold, even tried re-positioning the can ......nuthin. I've read all the posts about the webras being finicky on a regular tank so with a pressure system I guess the problem is magnified.
The needle is really rough to the touch. I'm suprised that with such a good quality engine that the stock needle valve bites so bad.........next step is to sh!tcan the hs needle, insert a plug and try a remote needle from a 25 FX..... using a hs needle from a la .15 did the deed on my mag's. My FX's are spot on with a bladder and I'm about ready to sell these Austrian devils [:(!] and buy a couple more FX's.
Are the webras really worth the trouble?
Anyone with words of wisdom? Lee? ( ...besides go clunk[;)])
The needle is really rough to the touch. I'm suprised that with such a good quality engine that the stock needle valve bites so bad.........next step is to sh!tcan the hs needle, insert a plug and try a remote needle from a 25 FX..... using a hs needle from a la .15 did the deed on my mag's. My FX's are spot on with a bladder and I'm about ready to sell these Austrian devils [:(!] and buy a couple more FX's.
Are the webras really worth the trouble?
Anyone with words of wisdom? Lee? ( ...besides go clunk[;)])
-
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Dane, they are tough to work with. They realy unload in the air which causes them to go lean. They have to be 100% broken in, and then you have to put them up very rich. Dropping your nitro% makes them less finicky also.
With the planes that you`re flying, the FX is plenty of power, and consistancy is more important in the long run. Just how bad do you want to get rid of those pesky Webras?
With the planes that you`re flying, the FX is plenty of power, and consistancy is more important in the long run. Just how bad do you want to get rid of those pesky Webras?
- Ed Kettler
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<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Lee Liddle</i>
<br />Dane, they are tough to work with. They realy unload in the air which causes them to go lean. They have to be 100% broken in, and then you have to put them up very rich. Dropping your nitro% makes them less finicky also.
With the planes that you`re flying, the FX is plenty of power, and consistancy is more important in the long run. Just how bad do you want to get rid of those pesky Webras?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
"Please don't throw me into the briar patch" Bre'er Rabbit
<br />Dane, they are tough to work with. They realy unload in the air which causes them to go lean. They have to be 100% broken in, and then you have to put them up very rich. Dropping your nitro% makes them less finicky also.
With the planes that you`re flying, the FX is plenty of power, and consistancy is more important in the long run. Just how bad do you want to get rid of those pesky Webras?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
"Please don't throw me into the briar patch" Bre'er Rabbit
- Dane McGee
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- Location: Greenville, Texas
<blockquote id="quote"><font size="1" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by Lee Liddle</i>
<br /> Just how bad do you want to get rid of those pesky Webras?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
I knew I could count on you Lee[;)]........answer is, not THAT bad yet[:D] Yep, I'm gonna run the FX's on the new secret weapons but I was tryin to get a couple of backups ready.....I thought perhaps I could make up in horsepower what the airframe lacked in
performance.(insert evil laugh here)
Kelvin, it crossed my mind more than once.
<br /> Just how bad do you want to get rid of those pesky Webras?
<hr height="1" noshade id="quote"></font id="quote"></blockquote id="quote">
I knew I could count on you Lee[;)]........answer is, not THAT bad yet[:D] Yep, I'm gonna run the FX's on the new secret weapons but I was tryin to get a couple of backups ready.....I thought perhaps I could make up in horsepower what the airframe lacked in
performance.(insert evil laugh here)
Kelvin, it crossed my mind more than once.
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- Dane McGee
- Posts: 885
- Joined: Fri Feb 21, 2003 1:57 pm
- Location: Greenville, Texas
I can get the mags to turn 17,500 both before and after the needle valve mod.
I unscrewed the needle from my mags and plugged the hole. I then tried a remote needle valve from a os.10 or something but still not satisfied so I ordered needle valve back plate assemblies for the la .15. I then cut off the needle valve and use it as a remote on the mags.
With a bladder they are dead on.........now I gotta figure out what to do with all these extra la.15 back plates[:o)]
I unscrewed the needle from my mags and plugged the hole. I then tried a remote needle valve from a os.10 or something but still not satisfied so I ordered needle valve back plate assemblies for the la .15. I then cut off the needle valve and use it as a remote on the mags.
With a bladder they are dead on.........now I gotta figure out what to do with all these extra la.15 back plates[:o)]
- Dane McGee
- Posts: 885
- Joined: Fri Feb 21, 2003 1:57 pm
- Location: Greenville, Texas
Status Report: Yee-Haww I think I cracked the nut. I decided I was not gonna let um whoop me so back in the saddle I go![:D]
I unscrewed the stock NV out almost all the way out and locked it in place with some tubing. I then installed a needle valve from a la.15 about 2 inches rearward.
Fired it up and what do ya know! These things will hold a needle after all. I had a really good range with the la .15 nv .......Ran about 4 oz thru it no probs. Filled another bladder full and about half way done it burned a plug. I'll try another type plug and see how the serpent flies when the wind dies down a little.
I unscrewed the stock NV out almost all the way out and locked it in place with some tubing. I then installed a needle valve from a la.15 about 2 inches rearward.
Fired it up and what do ya know! These things will hold a needle after all. I had a really good range with the la .15 nv .......Ran about 4 oz thru it no probs. Filled another bladder full and about half way done it burned a plug. I'll try another type plug and see how the serpent flies when the wind dies down a little.
- Dane McGee
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- Location: Greenville, Texas
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Dane,
Put those webras up really rich because they really unload in the air on a moose can. I been running one on a conventional type "beater" fence post plane I use for fun stuff. Check out the plane I gave Mike. That one is detuned with a OS .25 FX. Not sure the #1 son could handle all the power of the Webra set up. :=)
Put those webras up really rich because they really unload in the air on a moose can. I been running one on a conventional type "beater" fence post plane I use for fun stuff. Check out the plane I gave Mike. That one is detuned with a OS .25 FX. Not sure the #1 son could handle all the power of the Webra set up. :=)
- Dane McGee
- Posts: 885
- Joined: Fri Feb 21, 2003 1:57 pm
- Location: Greenville, Texas
Dane, I don't have much Webra experience, but have had my share of blown plugs. The MC-59 is a hot plug much like the K&B 1L. You might try the K&B HP or MC-9, both which are colder plugs. Lowering the nitro content in your fuel may also help. If you are still blowing, after those two changes, then you should consider adding head shims to reduce overall compression.
Good luck!
Good luck!