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Old 02-22-2014, 05:26 PM   #1 (permalink)
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Default Whiplash Aftermarket support

This is a Whiplash N, G, and EX owners support thread where you can post any solutions that you as an owner or entrepreneur come up with for a replacement to an oem part. No idea is to small and all are welcome. So don't be shy and post because youre solutions and ideas here today will help all of us tomorrow.
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Old 02-22-2014, 06:33 PM   #2 (permalink)
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Default Torque tube for the Whiplash

FYI. Jeff at MA said they used arrow shafts to make their torque tubes. I found that the arrow shaft size you need is 2016. I went to a local archery shop and bought 3 arrow shafts, they even cut the shaft to length for me. The measurements of the shaft was the same as a torque tube from MA, just longer. If you order on line make sure to get just a bare shaft, no inserts and to get full length or have the shop cut to length. The length you need is 31 5/16 inches.
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Old 02-22-2014, 09:32 PM   #3 (permalink)
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These are the gear blanks MA used, they do take extensive machining.

SDP-SI.com
A 1M 4-Y24024

A identical steel version is available, I turned these into the -17 gears mated to stock -18 plastic.
A 1C 4-Y24024
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Old 02-23-2014, 07:41 AM   #4 (permalink)
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From the tail boom chart, Synergy E7 looks the most promising and possibly a Compass boom. Cut to length and drill a few holes.

UPDATE - original Compass 6HV was 22mm, new 6HV and 7HV is 25mm, ruling out Compass booms

https://docs.google.com/spreadsheet/...EE&hl=en#gid=0
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Last edited by fastflyer20; 02-25-2014 at 08:13 AM..
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Old 02-25-2014, 04:21 PM   #5 (permalink)
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Quote:
Originally Posted by fastflyer20 View Post
These are the gear blanks MA used, they do take extensive machining.

SDP-SI.com
A 1M 4-Y24024

A identical steel version is available, I turned these into the -17 gears mated to stock -18 plastic.
A 1C 4-Y24024
Hi fastflyer20,

Just to make sure I understand you right: You mean mating the A 1M 4-Y24024 with
the A 1C 4-Y24018?
what is the "-17 gears", I could nor find any.


I also have an RJX PUH Gasser.
- The mainshaft is almost identical to the whiplash. The holes are a bit off, which brings the Mainrotor down by a few mm. That should work.
Make sure you get the mainshafts for the XT90 version (partnumber XT90-61115), NOT the EP90 version.
http://www.ercmarket.com/main-shaft-...t90-61115.html
The tailboom has a outer diameter of 22 mm, inner diameter of 21 and is 800 mm long. Should fit.
http://www.ercmarket.com/tailboom-ex...t90-83091.html
Mail Alex or Michel, they are very nice.
The bearing cups could fit, not sure I have the belt version.

If the whiplash only had a belt..., life would be much easier :-)
Suggestions on belts and pulleys anyone??

Kind reagrds & Thanks
George
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Old 02-25-2014, 05:28 PM   #6 (permalink)
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If i here of any aftermarket or other manufacture that would fit x-cell i will past it along to you guys.Sorry no buyers yet where still up for sale. Come on overseas that's what ma needs with aircraft aluminum 6061T and high end quality parts. Thanks for the support and all the years.
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Old 02-26-2014, 08:17 AM   #7 (permalink)
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Default Boom supports

This one is pretty obvious but it looks like the KDE 90 size boom supports would fit.


I also emailed KDE asking them if they have interest in making aftermarket replacement gears and shafts for MA birds. Im probably not the first to do so - but if others send the same idea maybe we can convince them

I looked at fitting a TRex 700 landing gear on it.. Its smaller but could probably be modified in a pinch though it'd look odd with a narrower stance and short skid tubes.
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Old 02-26-2014, 08:38 AM   #8 (permalink)
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Century Rad 30 struts are wide and heavy duty, similar to Tuff Struts, if you prefer a conventional style. Both use 10mm skids.
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Old 02-26-2014, 06:21 PM   #9 (permalink)
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Oldgasser - yes mating one plastic with one steel works well.

131-17 and 131-18 are MA part numbers for the gears, sorry I truncated the 131

So the weak gear is the 131-17, using the steel gear here is recommended

A lathe and mill are required to modify the blanks. The 131-18 gear with the three lobes is best made on a CNC mill.
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Old 02-27-2014, 03:12 AM   #10 (permalink)
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Hi fastflyer20,

Thank you for clarification.

So I am stuck with the bevel-gears. At least the tt-side bearing I would have to get custom made by someone. Have to see what this costs.
The 24024 has an outer diameter of 5/8 which is 15.87 mm. So it does not fit into
the 15 mm bearing. Changing the bearing and use metric bevel-gears does not work either. There seem to be no bearings with 21 mm outside diameter, only 22 mm.
How to adapt all this in a clean and stable way?

Maybe Ron gets a production of bevel-gears started?
I would be a buyer.

As for converting to belt I have not fould a suitable solution yet. The belt has to be quite long, the axis are 850 mm apart, and the belt-lenght has to fit almost perfectly.
At the same time the pulleys have to be quite small. A combination hard to find.
Find a way to be able to shift the tailboom a bit more? I'll take the tail apart in spring when I have more time and see. If I find a solution I'll post it.

Kind regards
George
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Old 02-27-2014, 10:21 AM   #11 (permalink)
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Quote:
Originally Posted by OldGasser View Post
I also have an RJX PUH Gasser.
- The mainshaft is almost identical to the whiplash. The holes are a bit off, which brings the Mainrotor down by a few mm. That should work.
Make sure you get the mainshafts for the XT90 version (partnumber XT90-61115), NOT the EP90 version.
http://www.ercmarket.com/main-shaft-...t90-61115.html
The tailboom has a outer diameter of 22 mm, inner diameter of 21 and is 800 mm long. Should fit.
http://www.ercmarket.com/tailboom-ex...t90-83091.html
Mail Alex or Michel, they are very nice.
The bearing cups could fit, not sure I have the belt version.

Does anyone know of a USA vendor for these RJX parts?
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Old 02-27-2014, 04:07 PM   #12 (permalink)
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Hi jharkin,

Here is a list of the dealers worldwide: http://www.rjx-hobby.com/dealer
The company www.rjx-hobby.com is based in Hongkong. It is owned by german engineers http://www.hurrican24.com (Art Modellsport), as far as I know.
I never bought anything from Hongkong, so I can not tell.

However the guys from http://www.ercmarket.com are very nice and have excellent customer service.

In the US Olivers Hobbies seems to have RJX parts in stock
http://olivershobbies.ecrater.com/c/...in-stock-items

Kind regards
Georgs
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Old 02-28-2014, 08:10 AM   #13 (permalink)
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Thanks George.

Yea, Im familiar with RJX, I have one of their Flybarless heads on my T450.. nice piece but its hard to find parts here in the USA.

I looked and non of their USA dealers have parts for the XT90 since that model wasn't imported here. Best option looks to be ordering direct from PJX in HK, they will ship to USA.

Right now we are still trying to find some real MA shafts, but if those run out I will try the RJX, thanks for the pointer.
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Old 02-28-2014, 08:31 AM   #14 (permalink)
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Quote:
Originally Posted by fastflyer20 View Post
These are the gear blanks MA used, they do take extensive machining.

SDP-SI.com
A 1M 4-Y24024

A identical steel version is available, I turned these into the -17 gears mated to stock -18 plastic.
A 1C 4-Y24024
Tom-

Looking through their catalog it looks like the spur gear in the tail gearbox might be an unmodified A 1Z 2MYZ1002706. What do you think?
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Old 02-28-2014, 09:30 AM   #15 (permalink)
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Yes, good find.

I just downloaded the CAD file and everything matches up. Similar to the 131-17, it looks like MA bored the ID to install an aluminum sleeve, drilled and tapped for the set screws and trimmed the hub length down.
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Old 02-28-2014, 10:27 AM   #16 (permalink)
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Now the question is maingears... I asked KDE if they would make some, I got a personal response back from Patrick that they did get multiple requests but the market is too small and they dont plan to. But it might be possible to give the dimesnions to SDP and get a quote to have some custom made?


Edit - same for custom shafts. The problem is going to be getting enough interest to make it economical, they might have a large minimum batch size for custom runs.
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Old 02-28-2014, 10:38 AM   #17 (permalink)
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I am surprised KDE won't make gears, how many T700 gears did they first make? Oh well can't force someone into a business opportunity if they don't want it.

Volume is the killer for individuals to get only a few gears made. Many, many companies make custom gears. Probably 4 or 5 in the Buffalo area alone. Setup time is the killer, say 2-3 hours to set up a hobber, not including the blank set up time. A single gear may cost $300-500. But setup time gets amatorized across the batch so 25 - 50 gears and the price becomes reasonable. I think it is worth waiting to see if anyone does buy MA.
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Old 02-28-2014, 02:20 PM   #18 (permalink)
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Quote:
Originally Posted by fastflyer20 View Post
I am surprised KDE won't make gears, how many T700 gears did they first make? Oh well can't force someone into a business opportunity if they don't want it.

Volume is the killer for individuals to get only a few gears made. Many, many companies make custom gears. Probably 4 or 5 in the Buffalo area alone. Setup time is the killer, say 2-3 hours to set up a hobber, not including the blank set up time. A single gear may cost $300-500. But setup time gets amatorized across the batch so 25 - 50 gears and the price becomes reasonable. I think it is worth waiting to see if anyone does buy MA.
I think KDEs thinking is that since its a discontinued model the demand will have nowhere to go but down over time, whereas TRexs are still around and a dime a dozen.

A batch of 50 gears is not that bad really, we could start a sign up sheet and I bet get enough people if we do it as a group buy... I was more concerned big commercial shops would want a 200 or 500 minimum even to quote it out. This is a time I still wish I was in college, I could just go use the CNC shop after class and make one... I at least still have CAD acess at work... a bit rusty but Id be willing to take a shot at drawing them out if we need it to get some quotes.
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Old 03-01-2014, 12:53 PM   #19 (permalink)
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Do we have any idea of how many Whiplash kits have been sold by MA ? 1000, 2000 ? more ?

It worths knowing that, so we can interest shops like KDE to make parts.
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Old 03-01-2014, 01:03 PM   #20 (permalink)
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Approximately 1000 total, E and G were the big sellers
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