ReBuild Recommendations

[Knx873]

Hi all! I’m new to this forum. I have a 5B and looking at going big bore. I have been flying helicopters for 20 years. I bought this a few years ago and would like to make it extremely fast. Looking at RC Max 55 to 88 cc motors. What drive line upgrades should be done to help keep it together? All thoughts will be greatly appreciated.

 

[blackrain]

Hi all! I’m new to this forum. I have a 5B and looking at going big bore. I have been flying helicopters for 20 years. I bought this a few years ago and would like to make it extremely fast. Looking at RC Max 55 to 88 cc motors. What drive line upgrades should be done to help keep it together? All thoughts will be greatly appreciated.

Irc driveline
Irc diff case or taylor rc diff locker
Blackbone trans gears
Taylor r. Diff case or turtle racing diff case
Pretty much all you need will be at detroit performance or Tyler rc Uk
Plenty of big bore baja builds in this forum look through them and you will find all the info you need

 

[Knx873]

Irc driveline
Irc diff case or taylor rc diff locker
Blackbone trans gears
Taylor r. Diff case or turtle racing diff case
Pretty much all you need will be at detroit performance or Tyler rc Uk
Plenty of big bore baja builds in this forum look through them and you will find all the info you need

That’s for the reply. Will this cover everything? Also what gear ratio should I select?

 

[blackrain]

I would do the upgraded brake hex also, I would wait on the spur and pinion gear until you are sure what size motor your going with.
Upgrade the rear hubs also Taylor hubs have larger bearings and the layshaft too

 

[Knx873]

I was leaning towards the 88.

 

[blackrain]

Portcity and Bankrupt rc both have builds with the 88 on here look at there gearing for reference. And what upgrades they bought probably going to need the steel brp hubs or the ones with the hex mount

 

[Knx873]

Ok thank you I’ll do that.

 

[blackrain]

https://www.largescaleforums.com/threads/portcityrc-project-red-rocket-🚀.26613/
https://www.largescaleforums.com/threads/grim-reaper-outlaw-build.25327/

 

[Knx873]

I’ll check it out thanks

 

[misterleon]

you will want to do brp or genesis wheels also.

 

[DougStar]

All good info right there

 

[MonsterAir]

From what I've seen the twin 65cc is a speed demon! Check out the 100mph+ vids on YouTube. 106 or 109mph is the fastest I've seen if I'm remembering correctly.

 

[BCRstudio]

Well, my first thought is = you never stated what surface you plan to drive on. So all above recommendations may be out the window.
As an overpowered 1/5 & 1/4 scales are hard to keep on a track (if you plan on racing).
If you plan on bashing, some of the stuff may have no use, as you need cheapest break point(s), unless you have the need to show off money and or want to rebuild/buy on a daily basis.
Same goes with straight (or rather straightish) speed runs (again, what surface) etc.....................................