MikeJM

My 90 will arrive on Tuesday and I'll be putting it in a TopRc A6M5 Zero. I'm considering using a Keleo exhaust ring, not sure yet.

This will be my first gas engine, I've been an electric flyer since I got back into the hobby 3 years ago after a 40 year hiatus.

n8622t

My Feedback: (8)

Can't wait to see it

SWORDSN

My Feedback: (13)

I will be following this closely

DHC6

My Feedback: (6)

I will also be watching, pretty sure I will be ordering one as well. Still lots of snow and cold here, so I have plenty of time before the flying season arrives.

n8622t

My Feedback: (8)

As long as they don't run outta stock

ForcesR

DHC6; if I remember correctly, you posted several months ago that you had an FG84R3 and would be shipping it to HH for repair? Do you still have the engine? What type of repair did HH do? Was it covered by warranty?

DHC6

My Feedback: (6)

Yes, I did acatually and when I got it back it was running very good. Second flight of the season and the connecting rod failed and then engine self distracted. That engine has a LOOOONNNGG story, with a depressing ending. Unfortunately I got the engine through RC Japan so Horizon couldn't warranty it and wanted 800-900 to repair it. So it sits in it's box and will be used as spare parts for the 90 if I get one.

Horizon has been very good, and they would have fixed it under warranty even though it was WELL out of warranty, however since it was from RC Japan they won't cover it. So obviously they know it's a problematic engine and are helping those with problems. I understand that they won't warranty it since it wasn't sold by them. As long as it's sold in North America they will service it.

ForcesR

DHC6; that's good information to know when it comes to warranty on an engine not purchased through HH NA distributors. Have you thought about buying the replacement parts from HH and rebuilding the engine yourself? It would be cheaper than spending the $800-$900 that HH wants to do the rebuild?

DHC6

My Feedback: (6)

I did calculate the cost, and the "retail" cost of the parts is nearly the same as what they were going to charge me to rebuild it for me. Pretty much the only salvageable parts are the crank case, push rods/covers, rocker arms, possibly valves and prop hub. Every thing else is scrap. I haven't accounted for exchange rate either. So I am sure it would be at least $900 to purchase all the parts, then at the end of the day I would still be left with a less then perfect engine.... I have spend a lot of Money on that engine, and have no interest in spending more to end up with an engine that still doesn't run properly.

I love Saito, I have had many over the years. So I will chalk this one up to "lesson learnt" (meaning trust reviews, and buy from somewhere that you can get service) and that the 84 is somewhat of a "dud".

From what I have seen, the 90 will have all the Ray English mods and will run properly out of the box and not need any modifications to run as advertised. So after the HUGE amount I have spent on trying to get this 84 to run well I will propabaly start fresh and try the 90. Still on the fence though.

hessian123

Does anyone have experience with this engine (90R3) in a 95“ size warbird like a Ziroli or big Bates Hellcat? Is it enough power and does it fit in the cowl?
Thanks!

DHC6

My Feedback: (6)

My GS TF P-47 weighed in at 28lbs with my FG84 and it was adequately powered. Yes the 90 will have more power, however not a HUGE amount more. So anything much over 30lbs I would say that the 90 will not be powerful enough. Depends on aircraft as well, but WWII warbird in that wingspan size are generall over 35lbs, and closer to 40lbs. So Yes I am sure it will fly it, but only with marginal power. 30lbs and under tough and I am sure the 90 will be MORE then sufficient. The Hagar 9 Corsair, or TF corsair, TF Zero, or even FW190 would all be prefect for this engine.

hessian123

Thanks for your informative response DHC6. Sounds like the 80" Bates Hellcat might be a better match. Anyone know if the 84/90 fits within the cowling on that bird?

oriole

My Feedback: (19)

So now that Horizon is shipping this engine, any feedback? Are they running cool right off the shelf without the Ray English Mods done on the 84?

DHC6

My Feedback: (6)

I should hope so, that was the hole point of the 90. To re-issue the engine with the RE mods already done from the factory.

MikeJM

Almost ready for break-in!

JLink125

My Feedback: (1)

May I ask a question to the guys running this new engine, I'm building a 1/5 scale F7F Tigercat and am considering running 2 of these radials. My question is will they be enough power? My plane will probably weight in the 50-60 pound range, hopefully less but it's to early to tell. I'm shooting for 50 RTF. Of the few tigercats I've seen actually completed the engines used range from Da50's to G62's and even DLE 111's which is WAY overkill. Any info would be much appreciated.

Chris Nicastro

My Feedback: (3)

If you can keep the weight down I'd say the new 90 with exhaust rings will be great in that Cat. I have a TF Corsair with the 84 and Xoar 24x14 prop with an AUW of about 30 pounds and it goes very well. There is a guy calls himself Tinkerman RC on YouTube and he built up a H9 with the 84 that tipped the scales at 39 pounds. Very nice looking post war plane and it flies ok at that weight.

JLink125

My Feedback: (1)

Great! Thank you for the information! I always try to build light but on some of these large planes it can be challenging, there's always a trade off between structural integrity and light weight.

n8622t

My Feedback: (8)

nice!!!

raptormasque

Hi,

I have already started the break-in of my FG90.
It seems to be a long story !
The 3 cylinders do not run evenly from the beginning and also each temperature of
the 3 cylinders do not rise evenly.
The third cylinder stays almost cold and spits out white smoke erratically.
https://goo.gl/photos/bcMpTK2AqFpDD78c9 https://goo.gl/photos/wdaHKDFonHcNfvFm7 Any idea or comments ?

Best regards,
Alain

hyltaiwan

https://youtu.be/-RTwzPTGRRE

Try it this way, it will help your entire break in procedure
more evenly for every cylinder.

raptormasque

Hello,

I do not understand what do you mean, how your way is different ?
The fitting of your engine is not so common in my part of the world

I am following the break-in process explained by Saito, no more no less.

Alain

n8622t

My Feedback: (8)

Nice idea....how did the cylinder temps compare?

n8622t

My Feedback: (8)

It's all about gravity my man

jws_aces

My Feedback: (33)

I have the 84cc motor and love it. I did have the Ray Mod motor but it broke. Please don't ask or go read the 84cc thread for details. If the 90cc is like it. I found that you have to break it in just the manual said. Real Rich so it doesn't rev many rpms at full throttle. Burn 2 tanks like this. I set my needles based on the highest temps on the ground with no cowl. It runs real nice with a little bit of popping during transition. But it now has over 20 flights and it is living.

FYI it likes fuel. My needles came out to 6 high and 4.5 on the low needle.

https://www.youtube.com/watch?v=C7kIlT71QW8 Make sure you baffle it on a plane with a cowl. Keleo has the baffles cheap pre cut.