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Official Whiplash Tech Site

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Extreme Speed Prop Planes Discuss the need for speed with fast prop planes (Screamin Demon, Diamond Dust, Shrikes or any REAL sound breakin'''' plane)

Official Whiplash Tech Site

Old 02-28-2016, 05:48 PM
  #126  
dirt dummy
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I think I use to put foam under my tank. Gad to hear you figured out the reversed trim.
Old 02-28-2016, 06:39 PM
  #127  
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Video

https://youtu.be/yUpXkwhQ074

https://youtu.be/lHThyNOLr0w



Last edited by Rocketman612; 02-28-2016 at 06:47 PM.
Old 03-08-2016, 01:03 PM
  #128  
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Get you a 4 or 6 oz blader tank from Dub Jett, he makes one for the whiplash
That engine needs to be rev'n harder, try some pylon 8.8x7 blades Dub also carries these
I ran my Whip-X with a Jett FIRE 50 and nitro pipe, it would pull strait out you hands no worries - and it most certainly hauled *****, when people thought they were the quickest at the field I would break out the "X" and let it scream at 20K + rpms
Old 03-08-2016, 01:54 PM
  #129  
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The short 6oz I believe is the ticket. Works in Demons. Can't recall if the 8oz short fits the Whip compartment - I can just squeeze one into a Demon if I Dremel away the top of the bulkhead behind the motor to clear the neck of the bottle.

http://dubjett.com/accy2015.html

The 6, 7, and 8.5 oz Tettras are worth a look too -

https://www.centralhobbies.com/cat3....t=21&subcat=41
Old 03-09-2016, 01:24 PM
  #130  
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SCOEROO and MDL,
Thanks for the links and advice. Will likely upgrade to a bladder tank if the fix I made is inadequate. The 46SF is running strong and I will try other props once the foaming issue is resolved.

Glad I went with the bright colors she is hard to see at times depending on how the light hits her especially on final.

Pete
Old 03-11-2016, 02:31 PM
  #131  
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I dug out my Whiplash - the Jett 6oz short definitely fits, like a glove. The 6oz Tettra won't fit, it's narrower and longer. The 7oz - I don't have one of those to try the fit - is 58x54mmx102mm which is close, but the width of the tank compartment is around 54mm, so it's on the brink.

Check out the right wing panel on mine.. I colored the TE with a black marker. The wing is straight on, check out the wash-in if you can see it. The inboard end of the aileron is taped in line with the fixed TE.

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Last edited by MJD; 03-11-2016 at 02:35 PM.
Old 03-11-2016, 04:37 PM
  #132  
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MJD,

Thanks for the info on the 6oz short Jett tank. Wow that is something on the wash in.

I have mounted the tank on two layers of 1/4 in foam and held it in place with Velcro. The tank now sits completely above the fuse. I half filled the tank and ran the engine with no foaming on the ground today. Will see how it does in the air but it's already a major improvement.
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Old 03-11-2016, 04:59 PM
  #133  
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http://www.dubjett.com/accy2015.html

https://www.centralhobbies.com/cat3....t=21&subcat=41
Old 03-14-2016, 11:49 AM
  #134  
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Well go t two more flights in yesterday. The foaming was better but the new tank location caused throttle pushrod issues. Called Dub Jett today and ordered the 6 oz short tank. We talked about my setup and he thinks my header pipe is too long by as much as an inch. He felt that I should be getting 17.5 to 18k with the 9x7 apc so when the tank comes I will be doing some cutting.

The launching system continues to work great and has been very helpful to safely anchor the plane while tuning.

Pete
Old 03-21-2016, 06:06 AM
  #135  
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Got the new tank in. Cut 1 inch off the header and lost 1k rpm's so I added the segment back. Didn't get to fly it but everything looks sorted out now.

Pete
Old 03-21-2016, 09:39 AM
  #136  
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Pour the nitro to it ......!!!
Shortening the pipe puts you in to a different RPM zone Vs length based on the prop you run'n, gotta let that engine unload for the pipe reversion to do it's stuff, this is why they are called tuned pipes
people expect just to wack it on their engine and it work miracles......prop,engine,pipe is similar to mind,body,spirit
Old 03-21-2016, 01:07 PM
  #137  
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Originally Posted by Rocketman612 View Post
Got the new tank in. Cut 1 inch off the header and lost 1k rpm's so I added the segment back. Didn't get to fly it but everything looks sorted out now.

Pete
Rule of thumb is to 1/4" off and retest when tuning a pipe.
Old 03-22-2016, 05:27 AM
  #138  
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Thanks for the feedback.

Regarding "nitro" I'm using 15% cool power and have no desire to go higher in nitro content or change fuel source. I did add 3oz castor to the next gal of fuel for the whip.

I cut one inch off the header on the advice of Dub Jett when I ordered the tank. I remembered reading that your to go in 1/4 increments but Dub thought I should take the inch and he has way more experience. Now that I have some segments I may go back and try again.

In any event I fully understand that the correct setup does not fall into your lap but you have to do some research and tinker to get the results your hunting for.

Pete
Old 03-23-2016, 08:25 AM
  #139  
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Yup, pipe tuning is the answer. Nitromethane is great for increasing your torque at a given rpm, almost better to think of it that way than for increasing rpm - although yes I get it increasing the % on a given setup can bring up rpm. But to make up for a short pipe by adding nitromethane.. bring head shims, a few spare plugs, and some popcorn.

I'd go back and take out 1/4" as suggested not 1"... if rpm rises, cut again. If not, stop. If rpm down, you can always reduce prop load a hair too.
Old 03-23-2016, 12:53 PM
  #140  
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Originally Posted by MJD View Post
Yup, pipe tuning is the answer. Nitromethane is great for increasing your torque at a given rpm, almost better to think of it that way than for increasing rpm - although yes I get it increasing the % on a given setup can bring up rpm. But to make up for a short pipe by adding nitromethane.. bring head shims, a few spare plugs, and some popcorn.
LOL!!!
MJD you must have been watching me do just this with my Webra 32 on a mouse can pipe a few years back. What a nightmare. After that adventure I said never again. My philosophy is to do the work on the steep part of the curve and when it flattens yielding less result for effort expended STOP.

Pete
Old 04-16-2016, 10:43 AM
  #141  
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BTW, Dan Gill was the designer of the whiplash X for ACM. I caught wind that he has improved the design. I am hoping to get my hands on one in the next few months.
Old 04-16-2016, 04:56 PM
  #142  
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Originally Posted by AtomicFrawg View Post
BTW, Dan Gill was the designer of the whiplash X for ACM. I caught wind that he has improved the design. I am hoping to get my hands on one in the next few months.
Sweet!
Do post when you snag one.
Pete
Old 04-16-2016, 07:19 PM
  #143  
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I'll have some news about it very soon it seems. I know the design is better and it is lighter in weight. But I will be posting photos in the upcoming month.

Slowly working on getting my WhiplashX back up to flying condition. This is one I build for my self at the end of 2002 and its still flight worthy.
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Old 10-19-2016, 02:03 PM
  #144  
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The Army finally cut the grass between runways ( first cut since spring) and was able to bring out my Whiplash. Engine with Jett tank running good. However I lost the throttle servo. Better stated it works intermittent like a bad pot. This is the second throttle servo to go bad. The first was a Futaba 3004 so I upgraded to a Futaba S3152. I am using the Dubro servo saver setup to eliminate vibration from engine back to the servo. Will try a HS 645 next. servo mounted with grommets and the case is not touching the airframe except where the screws hold it. New Rx for this plane.

Any ideas??
Old 10-19-2016, 07:12 PM
  #145  
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I have used nylon clevis at both ends of the throttle linkage. Never lost a throttle servo on a Whiplash. storage of servo beyond throttle closed that way the wiper is in contact in a non working area.
Old 10-19-2016, 07:13 PM
  #146  
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Originally Posted by AtomicFrawg View Post
I'll have some news about it very soon it seems. I know the design is better and it is lighter in weight. But I will be posting photos in the upcoming month.

Slowly working on getting my WhiplashX back up to flying condition. This is one I build for my self at the end of 2002 and its still flight worthy.
Any news?
Old 05-03-2017, 05:09 PM
  #147  
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Any news on a new Whiplash?
Old 06-07-2017, 11:11 AM
  #148  
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Originally Posted by Razor-RCU View Post
Any news on a new Whiplash?
Wasn't Rick "Bagostix" killed a few years back? I think his company had gravitated towards the UAV market prior to that.

http://www.legacy.com/obituaries/the...?pid=157306405

Last edited by GhostofAuger; 06-07-2017 at 11:14 AM.
Old 06-09-2017, 08:03 AM
  #149  
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Originally Posted by GhostofAuger View Post
Wasn't Rick "Bagostix" killed a few years back? I think his company had gravitated towards the UAV market prior to that.
That seems to be the case given the signature of the OP in post #1:

Advanced Composite Manufacturing (ACM)
Acmuav.com
[email protected] / [email protected]
Rick (BAGOSTIX) Broussard

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