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HelicopterNext D Rave-ENV-700 › Rave ENV 635 Nitro (thoughts and discussion)
01-27-2013 05:17 PM  4 years agoPost 1
P Andreoli

rrApprentice

new york

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-hey everyone, recently i have converted one of my ENV 700 nitros to a 635 nitro. any one who is interested in doing the conversion all you need is to get the 635 boom, torque tube,625mm blades, and boom supports.

1.)ND-YR6-AS2001 - Tail Boom
2.)ND-YR6-AS2002 Torque Tube
3.)ND-YR6-AS2003- Boom Support Set

-the ENV does not use the two boom clamps like the ballistic does to mount the tail servo. The ENV Nitro has the tail servo in the frame to assure that it does not get drenched in oil, also this helps with the CG. since the tail push rod that comes with the conversion is for the ballistic 635, it is about an inch to short to reach the other side of the boom. so what i have done is take a push rod from the 700 size kit and cut it to the length it should be and make 3 small (Zs) at the end of the rod with some pliers to bend it. once the rod has this( Z) pattern take some needle nose and curve them a little. once this is done take a little bit of J.B. weld and put it on the end of the rod and push the link into it, the zig zag pattern is there to assure that it gives the link a little bit of resistance so it does not pop out. Note, make sure to have the side with the J.B. weld towards the frame of the helicopter so it is exposed to less oil, over time the oil might break down where the J.B. weld is.

- another option is to cut the tail control rod to the correct length and put threads on it.
(if anyone knows what tool that could be use to do this please let me know)

- the other thing about converting the ENV into a 635 machine is that weight could become an issue. i have talked it over with a few other people and cutting out all the non-essencials such as....

1.) boom support bridge
2.) head button the the top of the rotor head
3.) pushglo
4.) (if you have on already) remove header tank
5.) try to get a smaller receiver pack like something with 1300mah to reduce the weight
6.) if you have 3 metal bearing blocks take two out and replace with the plastic ones and keep the metal one on the top.

- i have not tested this conversion yet because of the weather here in NY, it has been in the negatives the last week or so. hopefully next week it will bee warm enough to test it out. If anyone beats me to it please post your thoughts about the conversion and what you find that is different in the flight characteristics and setup.

-thank you Brian Butler for helping me out!

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01-27-2013 06:07 PM  4 years agoPost 2
James Allen

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South West, OH USA

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Subscribed

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01-27-2013 06:34 PM  4 years agoPost 3
ExFokkerFlyer

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Coarsegold, CA

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Good luck Paul, I was wondering when somebody was going to try this. Should be a lot of fun, I'll be interested in how it feels compared to the 700 configuration.

To add threads to a rod you have to use a die. Essentially, it's the opposite of a tap, and you do it the same way. Screw it on a little bit, back it off, screw it on again a little further, back it off, etc.

Here is an example of a die http://www.hobbylinc.com/htm/k+s/k+s460.htm

You need one of these to put it in to thread it onto the rod. http://www.hobbylinc.com/htm/k+s/k+s420.htm

I'm not sure what thread the pushrod is, but I suspect that it's around 1-2mm, but I haven't tried.

Keep us posted!

Tom M

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01-28-2013 10:43 AM  4 years agoPost 4
P Andreoli

rrApprentice

new york

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correct die size 1mm

thanks for telling me what tool i needed to make threads on the control rod. asked my dad and he had a Die set in the garage

-the diameter of the control rod is (1mm) so to anyone who wants to do this method its a 1mm.

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02-02-2013 09:37 PM  4 years agoPost 5
vigor10

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Plano Texas

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Do you think the longer blades would be better?

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02-03-2013 12:09 PM  4 years agoPost 6
P Andreoli

rrApprentice

new york

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do you mean the 625mm radix V2s?

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02-03-2013 03:12 PM  4 years agoPost 7
ben_beyer

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Canyon, TX

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I'm interested in trying this with a YS 60. I bet the flight times would be awesome too!

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03-13-2013 11:11 AM  4 years agoPost 8
P Andreoli

rrApprentice

new york

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flight times with env 635 N

im getting about 8 min on one tank, the O.S. 105 does great for this application because the machine is heavier than a 50 and lighter than a 90, so the bigger block motor makes up for that extra 2.5 to3 lbs of weight. most of the extra weight is from the fuel in the fuel tank but still the thing performs great. i cannot say that this machine is absolutely 100 % because i only have 15 flights on it, but the potential is there.

-Paul A.

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03-13-2013 06:49 PM  4 years agoPost 9
James Allen

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South West, OH USA

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Thanks for the updates Paul. This is really cool!

Maybe if there is enough interest in this size?

Curtis could make a smaller, and lighter frame conversion. Possibly a smaller fuel tank, shorter frame design with direct to swash on cyclic. Oh...and a little bit smaller canopy too. Just throwing that out there.

It would be awesome to have a purpose built 625 sized nitro that can fit .91, and 1.05 size engines!! It would be a first from any manufacturer that I'm aware of.

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