21 in a 12 size jae

[thomas erb]

Just wondering if any one has done this

 

[Kevin Krogness]

If you are going for SAW sure but no point if you want a good handling hull. I believe Gil Gisono spelling?? Did it but, I would stick to the 21 in a 21. If you build your JAE on the lite side you can get it around half pound heavier.

 

[thomas erb]

I could care less for racing with it just a stupid fast boat is all I'm looking for

 

[Kevin Krogness]

The 21 will be plenty stupid with the correct engine, pipe and prop!!! Plus a bit on the controllable side!!!

 

[Slideblues]

I can offer a tip on this subject.......

I built a narrowed tub ultralite version, With a way hot Trinity Picco .12

Came apart at speed after bout three tanks so REALLY do the bracing on the tub overkill.

Gene

 

[gil sonsino]

Yes Kevin is right I did it with a Go .21 and it handled good but if you consider heat Racing a bigger boat is the direction..I guess with a .21 Nova it will be very unpredictable.! The lite version WON'T support any .21 engine. Gill

 

[thomas erb]

Thanks for the answers guys I have done sething like this with a 40 in a 21 size rigger and it was a rocket ship

 

[user 6667]

Another option is to use an OS 18 TZ.

 

[gil sonsino]

I second the OS 18TZ same or better performance than the GO 21.Gill

 

[thomas erb]

We'll I have a cmb 21 I was looking to put in there

 

[Greg Bonahoom]

I tried this with a novarossi .21 in a .12 jae. I would not recommend it. It was very fast but very unstable. I don't think I ever even completed 2 full laps with it. Huge waste of time.

 

[bzubee]

As they said might be okay for a SAW run but not for turning ovals.

 

[gil sonsino]

There's nothing wrong experimenting.....most of us dream with faaaast boats ..but in this case I'm pretty sure you won't take profit of this combo because the tub is narrow for a .21,running time will be short due to the small tank and with a Strong motor like a Nova or CMB you will experience lot of blow overs but it's up to you go ahead with your Project.Gill

 

[Blackout]

How fast do you want to go? A .21 hull with a good .21 motor will do high 60's easy with the right prop and pipe.

 

[thomas erb]

Is there ever a thing a too fast lol

 

[Blackout]

Is there ever a thing a too fast lol

Do you run at a pond protected from wind so that the water is mostly calm? I sold my .12 rigger partly because my pond is rarely calm and small fast boats just don't do too well in rough waters.

 

[Kevin Krogness]

Is there ever a thing a too fast lol

No but yes!!! When you have to keep chasing it and are not having fun anymore!!!

 

[thomas erb]

I see what your saying

 

[Tony Drake]

Another option is to use an OS 18 TZ.

Doesn't the OS 18 tz have an SG shaft??? How are you guys mounting the fly wheel and collet.

 

[gil sonsino]

Tony youre right.Just cut the shaft at the limit of threads with a cutting wheel and a Dremel.Take care to carefully isolate the front bearing or remove the cranckshaft off the crankcase for this task.Have done this many times.Gill