SAB Goblin RAW 420 DD Build Part 2

In this video we get the second part of the build series done on the RAW 420! Heli is coming together nicely! SAB did a outstanding job on this one! Once we get a few things in the mail we can finish this thing up and get some flights on it!

[@robbennett7795]

Brilliant as always Jeff. Thank you once again for another comprehensive build video. Sab have done their homework yet again, quality and simplicity abounds. Looking forward to part 3. Take care and stay safe mate.

[@westhobbiesrc8051]

Thanks Rob! Yes they did! They really thought about the design with this one and did an outstanding job! Very low part count yet super strong and everything locks together just like typical SAB fashion!

[@larrychamel]

Another Fantastic day of Wrenching on your SAB Goblin 420 RAW!! Once again, perfection has been achieved Jeff!

[@westhobbiesrc8051]

Thanks Larry! So close to finishing up waiting on one little thing to come in the mail hopefully today and I can get that thing done this week!

[@nickdean468]

He'll yeah loving the build video on this super bad ass SAB RAW 420.

[@westhobbiesrc8051]

Such a perfect Heli! SAB did a fantastic job with this little guy!

[@bladex9061]

Appreciate the work- it's so clearly explained!!

[@westhobbiesrc8051]

You’re welcome! Thanks for watching!

[@tbonesixtynine]

The quality of these build video's is impressive. Subscribed! Waiting for a few missing bits to arrive to start build my own 420 raw :) Im stoked!

[@westhobbiesrc8051]

I’m glad they are helpful and thank you for subscribing! The RAW 420 is a incredible heli!

[@scrc511]

Watching your build on the 420Raw, I just ordered mine since I can use all the electronics from my Old 420.

[@westhobbiesrc8051]

That’s awesome! The RAW 420 is fantastic heli, you will love it.

[@user-db2sz1cx1i]

Thanks a lot, great help

[@westhobbiesrc8051]

Thank you for watching! I’m glad the video was helpful!

[@adamwu1997]

Great video. It helps me a lot. Thank you.

[@westhobbiesrc8051]

you’re welcome! thank you for watching!

[@allanbassett6163]

HI Jeff, I found the problem with the dampers, you are supposed to install them with the lip facing the centre hub however if you do that you get loads of play, so to solve the problem if you look in the spares bag there is 4 o rings 2 for tail 2 for the head , I noticed the o ring is slightly larger for the head than the o rings put in the assembly bag so I fitted them and no play, problem solved, I have notified Enrico at SAB and he is looking in to it. 👍

[@junjunmulleda5467]

Great instructional build video.

[@westhobbiesrc8051]

Thank you!

[@DadsRCHangar]

Great stuff Jeff, look forward to part 3. Certainly easy to follow if you are building your own 👍🏻

[@westhobbiesrc8051]

Thanks! I hope one say you will build a heli! I know you got the S3! Time to go bigger! Lol

[@DadsRCHangar]

@@westhobbiesrc8051 Ok what do you recommend, something with lots of stabilisation 😎

[@westhobbiesrc8051]

@@DadsRCHangar so any heli with a good FBL will have great auto level or stabilization. Now for your first build I would recommend Align kits, you get everything you need in the box with the super combo kits and they are a great heli. The Align 470 is a fantastic one! Get a Ikon/Brain 2 FBL. Now setting up the FBL could be tricky and little to learn for your first time but luckily I got videos on it!

[@DadsRCHangar]

@@westhobbiesrc8051 I will check them out, but it sounds like a challenge 🫡

[@westhobbiesrc8051]

@@DadsRCHangar Good thing for you is you’ve got the best channel and videos to follow LOL the SAB 420 is a fantastic kit as well!

[@ytluisase]

Great video again, Jeff. Popcorn is ready for Part III :)

[@westhobbiesrc8051]

I am working on part three as we speak! It is the most time consuming one because it is the wiring! And you already know it’s gotta look perfect LOL

[@ytluisase]

@@westhobbiesrc8051 good luck with the wiring, it is tight! :)

[@westhobbiesrc8051]

@@ytluisase thank you! It sure is a lot to wire and fit in a open design and make it look good but I enjoy that Challenge. I’ll be cutting all the wires shorter and new ends.

[@ytluisase]

@@westhobbiesrc8051 that's a very good idea to shorten them!

[@westhobbiesrc8051]

@@ytluisase I shorten all my wires on all my helis so I can get a clean perfect run into the FBL and it’s looks clean and good.

[@javierarroyo7095]

Nooiicceee --- just got the helidirect email -- mine shipped today

[@westhobbiesrc8051]

Nice!! Good luck!

[@mattdbot]

Great videos bud! Really appreciate them! I stand corrected on the Autorotation bracket… the curve goes towards the main shaft… the Manuel is deceiving… on my it shows the SAB stamp away from the main shaft

[@westhobbiesrc8051]

Thank you! I appreciate it. I looked a few times over the 7 that I’ve built and made sure. It is deceiving.

[@mattdbot]

SAB Manuel’s are the best there is… but on mine… it showed the logo stamp forward… My bracket is really tight on the pin… have you had that on any? They told me that some have been reported.. wish they would have made them aluminum

[@smaze1782]

Great video. If we don’t know by feel what the correct tension should be, how do we know what the right belt tension is?

[@Scjon03]

Waiting for the mini servo mounts to come out. Have some laying around and don’t want to buy more servos.

[@westhobbiesrc8051]

They should be out soon! I went with micro so I didn’t have to wait lol

[@thesadprofessor]

Such a great series!! Could you give me an advice on which charger you recommend to charge (ManiaX 80C) 6S-22,2V 2400 mAh batteries? I honestly didn‘t have luck until now and seem to always buy the wrong device. At best it could handle a balanced charging process… Thank you so much!

[@westhobbiesrc8051]

Thank you! I’m glad the build series is helpful! So I would recommend the ISDT P30 or a Icharger 456DUO ( I have both and they are fantastic) but the iCharger 456DUO is good for up to 6s pack and the ISDT P30 is good for up to 8s packs. Both are duel ports so two battery’s at one time. You will need a separate power supply I use the Junsi S2100 power supply witch is 1200 watts but I only use that because Im Running three two port chargers at one time. But the buddyRC 900 watt power supply is a great price and good as well! Some options for you.

[@mattdbot]

Question… with all of the ones you’ve built.. can you tell me how long if you had to trim the motor or Esc wires?

[@Lance57H]

On the cyclic servo sticking straight up and down did you program that point as your 90 I'm assuming with the Torq servo box?

[@westhobbiesrc8051]

Yes, you can program 90 with the Tbox. You can also do it with sub trim in the FBL unit. Programming center in the servo is better but both ways work.

[@bobbysmith3116]

Hey Jeff! Great build video! I'm using the same equipment you are using in your 420, but I can't seem to find the TORQ servo grommets you are using for the tail servo. Where did you get yours? Are there any other brands of aluminum grommets I can use for that tail servo mount? Thanks!

[@westhobbiesrc8051]

Hey Bobby! Thank you! I greatly appreciate it, I hope the videos are helpful! I get them from helidirect search torq servo grommets

[@bobbysmith3116]

@@westhobbiesrc8051 Thanks Jeff. I thought I did check with Heli Direct. But will try again. Thanks for all that you do buddy

[@submarineone]

Nice video. WestHobbiesRC

[@user-vx5gv7ig1c]

Классный аппарат

[@jasons1609]

Great build Jeff, can you share your STL for the XT60 mount? Thanks!

[@westhobbiesrc8051]

Thank you! www.thingiverse.com/thing:5506451 it’s not my file just one I found

[@davids8345]

these videos are really helpful, i've just (well nearly) finished building my 420 and this series came in quite handy... one question though, did you notice the tail blades rubbing on the tail shaft screws?

[@westhobbiesrc8051]

Awesome! I’m glad the videos helped! That’s my goal, I want videos that are helpful and can be used though out the build. So yes, they touch a little but it don’t hurt it.

[@davids8345]

@@westhobbiesrc8051 ok cool, I took the tail apart, thinking I put the thrust bearings in backwards, but it still does it... In the end I just sanded off the lip a fraction...

[@westhobbiesrc8051]

@@davids8345 I thought about doing that as well but after building 5 of them and flying a ton of flights it didn’t hurt anything so I left it lol

[@marcossallua1984]

In the RAW 700 E and RAW 700 N , we have an indicator of the correct tension of the tail belt, in this model is like previous model ? you choose the desired tension? 28:39

[@westhobbiesrc8051]

Yes you tension the belt to your Desired belt tension. You can also change the amount of tension on the tensioner.

[@sharkiedoo]

Hi, you adjust your tail at about 4 degrees a 0 rudder, did I understand well ? I always did 0 with 0…. On my other Helis. And thanks for the great 2 videos!

[@westhobbiesrc8051]

Yes I always set all my tails up with the servo at zero and 2 to 4° of positive pitch at the tailblades. That is proper tail geometry and set up. If you set zero and zero then your Gyro is working harder to fight the torque when you can set it mechanically to mechanical leverage against the torque.

[@sharkiedoo]

@@westhobbiesrc8051 thanks for the answer and the great video.

[@reginaldmcnab3265]

26:00 this is the part where where I prefer torque tube! But 5he belt seems to make less noise

[@westhobbiesrc8051]

Personally I can’t stand TT anymore. After going belt on so many helis it’s just so nice and no stripping TT gears if you touch the tail or set hard tail stops.

[@reginaldmcnab3265]

@@westhobbiesrc8051 I love torque tube. Although with the automatic belt tensioner it is much easer to get the correct belt tension. I bought ALZRC 380 and man that thing is quiet my next heli will be SAB 420 with direct drive but I wait to see what the align TB40 will be

[@DetoursRC]

I got mine all done and the spirit 2 setup. The setup on the spirit and its rescue was really easy and everything seems to be working as it should. Ive checked and triple checked everything and honestly im really nervous to maiden it. Woried I didnt do something right. My first build.

[@westhobbiesrc8051]

As long as everything is going the right Direction on the bench then get it light on it’s skids and see if it’s solid and if it looks/feels good lift off! If the gyro directions are correct tail direction is correct and gain is set for the tail. It will fly great!

[@DetoursRC]

@@westhobbiesrc8051 thanks. Yeah everything is going the right direction and soo is the gyro. Probably just nervous because its my first build. I think its all good though. If the wind and rain would stop and I get any daylight while im not at work ill maiden it.

[@DetoursRC]

Have you had any issues with tail wag that you couldnt tune out with tail gain on this heli? If I increase the gain on mine the wag gets more narrow and fast. If I decrease it the wag gets bigger and slower but I can completely get rid of it.

[@westhobbiesrc8051]

@@DetoursRC yes, it’s perfectly normal for the first 20ish flights. If your running the governor then also turn governor gain down. Everyone I’ve built has wagged for about 20 flights till the tail breaks in.

[@DetoursRC]

@@westhobbiesrc8051 ok cool yeah I thought the mechanics in the tail seemed a little tight. Thanks!

[@scottvahey4869]

Is that your first SAB and that thing is sweet

[@westhobbiesrc8051]

No I have multiple other SAB models

[@OICU81B4-c8o]

does the kit come with bullet connectors?

[@westhobbiesrc8051]

No it doesn’t come with any motor bullets

[@gregnoble7755]

where did you get the servo grommets? My CL0604T did not come with them

[@westhobbiesrc8051]

No the servos do not come with them. They are available on heli direct. There are for the Torq mini servos.

[@brolic4504]

Are they needed or just preferred? They should mention that it’s needed if so. I have my setup that just came in with everything but the gromets. Would really suck if I had to wait 3-4 days for some gromets for tail servo.

[@juliensteiner5475]

Post part 3 👌

[@westhobbiesrc8051]

Working on that now!

[@m.a.2598]

Hi .. thank for the video... afte instal the arms on the shaft .. they are a little bit tight ... and move so freerly as the head arms. Is normal ?

[@m.a.2598]

Sorry... the tail arms dont move so freerly as the head arms .. is normal ?

[@westhobbiesrc8051]

Yes that is normal. As long as it is smooth no grit/binding a little tight is OK. It will work free as the time goes on. It is perfectly normal anytime you build a brand new model for some parts to be a little tighter than others. You just wanna make sure it’s smooth and no grit/binding

[@allanbassett6163]

Hey Jeff you installed the dampers the wrong way look in the manual page 12 bottom right hand corner, the lip goes towards the main hub, 👍

[@westhobbiesrc8051]

I seen that way but having the lip ride the bearing gives the best gap between the head block and grip and head is tight and no slop/play and the lip rides the bearing like the bigger SAB models. I’m leaving my head this way.

[@allanbassett6163]

@@westhobbiesrc8051 if that's the case Jeff, SAB should make this more clear in their diagram its misleading 👍

[@westhobbiesrc8051]

@@allanbassett6163 it’s definitely misleading, I don’t honestly think there’s a wrong way. I just personally feel like the way I assembled it is how they do the big models in that little lip is riding the bear and giving you the perfect preload in my opinion. I have put a couple flights on the model head is super tight in perfect!

[@allanbassett6163]

@@westhobbiesrc8051 Yup all my goblins have the lip facing towards the bearings, I think SAB should revise the way the damper fits in the manual especially if its someone's first goblin build👍

[@DetoursRC]

Is that connector holder for the xt60 available yet?

[@westhobbiesrc8051]

Yes it is! Just put mine on last night!

[@DetoursRC]

@@westhobbiesrc8051 where can i find one? Out of stock at helidirect along with the ikon. Cant find an ikon or brain.

[@westhobbiesrc8051]

@@DetoursRC I purchased mine through Heli direct on the pre-order and they shipped out as soon as they got in stock but probably ran out. You can try BK hobbies as well. iKons won’t be back in stock till November unfortunately.

[@andythilo.]

Not sure if you've changed it, but your plastic damper is the wrong way round

[@westhobbiesrc8051]

No I did them that way on purpose, I want the lip riding the bearing like on bigger SAB models. Head is tight and perfect. Multiple flights already!

[@sawyerheslep8493]

Size comparison please!

[@westhobbiesrc8051]

As soon as it is finished up I will do a separate size comparison video!

[@jimreynolds8284]

Hay bo bo what's going on today LOL

[@SupraSmart68]

Link to part 1 here... kzbin.info/www/bejne/hIO6c2t8ra-do5o

[@rclocosflyersbypilotjeremy1520]

Part 3

[@westhobbiesrc8051]

Part 3 will be out tomorrow!

[@JohnBrown-vn2qw]

micro lube the shaft