will a cheaper engine like a 5.8 brison or sachs hover a
42% challanger 2 bipe at 34 pounds
id like to get buy without paying the extra money for a twin

A ZDZ-80 with a Krumscheid tuned can and header easily hovers a 29 lb plane, actually has plenty of excess power to pull out of hover. I would guess that it also would hover a 34 lb plane. Without the pipe, it probably would not have enough power for your plane. I don't know if the Brison or Sachs 5.8 is as strong. The ZDZ likely will cost you less than the Brison and they are available.

yeah the zdz 80 is a great engine but im trying to find something in the 500-600 dollar range used

I've got a ZDZ 80 on a 28lb edge. Vertical is unlimited and hovering isn't a problem. I am running the cheap $50 muffler. I noticed you want to keep the cost around 500-600. You can get the ZDZ 80 brand new for $555.00 and the cheap muffler for $50. That will put you $5.00 over your limit. I had a 37% challenger 2 bipe with a brison 6.4 twin on it and it balanced a little tail heavy. Mine weighed 31lbs, so you might have a problem with balancing the big bipe. Just a thought. I had to add 1.75lbs of lead to the front of my edge with the ZDZ 80 on it.

Andy

i didnt know it was that inexpensive for a zdz 80

hey flyindoc whos 37% kit or plans was it whats the wingspan
i might be better of going the 37% route

The plane is the first Miles Reed Challenger II Bipe. The 1-800-COLLECT model. The new one is a little bit bigger. Dave Dessecker still has the plans, although he isn't cutting the kits anymore, not a big enough demand per Dave. He will however sell you a builders kit. This is the plans, center cabanes, landing gear and canopy for $80 I think. You can find information about him at the D&B wesite. I think it is D&Bengines.com.

Andy

good thing the whole country dont know how good miles reed
planes fly or there would be a waiting list to get one
he's trully one of the best designers and pilots the hobby has ever seen

DITTO

Andy

I really think that a Brison 5.8 is way too little motor for this purpose and yes, it does have as much, or more, power than a ZDZ80 twin or single. The Brison will turn mid 6's with a 26X10 prop.

I would recommend you find a deal on a good used 3W-120 or ZDZ120, as I think that is the minimum engine you should run on this.

I have a new ZDZ 120 that is going to be for sale that is a bit out of your range, but it gives you an idea what you could do for just a little more money. I don't want to post the price here and appear that I'm trying to sell it in this forum, but write me if you're interested on what it is going to be on sale for.

BTW, remember that a biplane has considerably more drag than a monoplane and requires more power for any given size...of course this doesn't factor into it for hovering, but it does for most any other vertical maneuver.

I agree with bpryor that a 120 twin would be enough to hover the bipe. However, the ZDZ 80 single would be more than enough power to fly the bipe. It would have very good vertical power, although it wouldn't be unlimited. My Brison 6.4 twin turned a Bolly 26X10 at 6350 new without any adjustments. My bipe wasn't unlimited as far as hovering goes, but it had more than enough vertical power to do 2 or 3 vertical snaps and not tail slide out of it. Square loops were effortless also.

I guess it comes down to whether you really want to hover it or fly it. For me bipes aren't meant to hover. Thats just my opinion.

Andy

I agree with everything Andy said as far as flight performance with a good 100, it all adds up. I don't know if I'd agree about the hovering though. Even this plane's full-size counterpart is getting close to real hovering, so why not?

You've got to see Miles fly to believe how really good he is. He is coming back to our flyin this year. He was there 2 years ago and had a really great time. August 17 & 18 in Summersville WV. If you can make it, you'll certainly come back.

Andy

I owned a Miles Reed 90" Extra 260 with a G62 a couple of years ago and it flew fantastically. I'd have to agree with you guys on Miles' design skills.

thanks for the input guys , no i dont really care about hovering however Miles flys his with a d&b 120 and it does everything
with unlimited power and i want the same capability in my plane since my thumbs will never have it
thanks kevin
ps: bill you got p m

I have one, but didn't build it...it's gonna come in at 38lbs or so. I had originally wanted to use a 3W 120, but it was too wide for the cowl, so I went with a 3W 140 4 cylinder. I don't know the scale, Iv'e heard 37% and 40% .....the top wing is 90".

Here is a pic..

Here is a cowl shot after I got the engine mounted, but before the air ducting went in. It was just mounted here..3W 30X12 prop, Tru Turn spinner...