roltech

Thanks for the info, I will try out LHS first and if no results I will PM Kondor Model Products, I want them new.

roltech

kahloq

Here is a dealer for Canada.
This is main page of hobby shop regarding RCV engines:
http://www.blackflyaero.ca/BlackFly%...RCV%20page.htm

This is link to price list in Canadian Dollars:
http://www.blackflyaero.ca/Web%20Ret...ice%20List.htm
RCV 91CD : price 269 canadian

You can buy them direct from KMP as already mentioned.
You can also buy them from shopatron:
http://www.shopatron.com/index/147

ivancant

Hello fellow B-25ers,

Has anyone used OS .70 4-strokes on your plane?

Thanks

kahloq

The specs of the plane say .70 4-stroke on the engine requirements section. I am sure they would work quite well.

Myself, I'd do something a little more intensive and put Saito FA-90TS flat twins in each nacelle. Can you imagine the sweet purr from that setup?? A little bit more weight though then a standard 90 size 4-stroke, but not too much...but also a lot more expensive .
A found a site that showed a Wing Manufacturing B-25 being built with saito FA-90TS engines and that kit has 84" wingspan. I dont care for kits of that nature though, so the KMP would be my choice

hsalf

i fly mine on 70 asp,s plenty of power

Jimmy Bananas

My Feedback: (13)

Well I haven't test flown my B-25 yet and because of an accident I had two weeks ago, with a propeller on the plane....spend the better half of the afternoon,putting it together(at the field),running engines,checking everything out and then we were ready for the test flight...My buddy started the left engine,and then he was attempting to start the right one, and I was reaching across to assist him when it happen....My left hand engaged a 14" prop,and got it three times before it stopped..Anyway, had 35 stitches in it (index finger), and hopefully, tomorrow they come out..Still pretty sore....Probably another two weeks before I do some serious flying and am sure I can give a more positive report on the test flights...Am very confident the "Ruptured Duck" will fly...End of story............

hedgehog

Andrew
Any word on that crew yet?

Ken

roltech

I'll need those too!

roltech

DragonLines

My Feedback: (13)

Me Too!

airega1

My Feedback: (204)

OK Guys, I maidened my KMP B-25 this past Sunday, all I can say is WOW! Super smooth flyer gentle landings, 2 OS 91 4c really provided unlimited power, and they weren't even broken in. Go for the better retracts, it's worth it. At 18 lbs this bird is a performer, can't wait to fly her again.

danrc2

what is the web site for the kmp b-25???

kahloq

A quick search on a search engine would have answered that

http://www.kmp.ca/

roltech

What are the better retracts?

roltech

Jimmy Bananas

My Feedback: (13)

Hey, She do fly..after the first two flights, with a 'Nasty" left turn in it .finally got it to fly straight and level....the problem was ,I glued the rudders on with "Left" in them..resolved the problem by moving the stab LE (Looking at it from the rear) !/8" to the left, and adding a washer to the engines for more right thrust,...flys great....have to get my landings a little better..not going to use 'Full" flaps until on final..Tried them on the cross wind before final and it was a handful to handle..did manage to get it down in one piece...the 2 91- 4 strokes are enough power to fly the plane...beleive it can fly it with 2/3's throttle ..will try it next time out...Funny,but I believe the 'Ruptured Duck", is smiling.....am one happy camper..will post some pics later...

jagfab

guys
i have a different problem here
kmp is unable to ship the b25 robart gear to us in india for certain reasons

was just wondering has any body used the wing mfg b25 set on the kmp b25 or shall i go with 630 (mains ) and 639 (nose)

will appreciate a reply

thnx

puneet

DUBROW

DID ANYONE DO THIS B-25 IN ELECTRIC IF SO WHERE DID YOU MOUNT THE BATTERIES?

kahloq

This plane can easily be done with electric brushless motors. However, the cost would be very high. The glow motors being used are in the .90 size range....so, you'd need outrunners that are rather large like E-flite Power 110($164.99 + at least an 80 amp brushless esc...Castle Creations 80amp is $159.99). Your over $300 per engine setup. Same basic price as a really nice .90 size 4 stroke, but, you now still have to power those motors with some hefty batteries. You'd need several large sized lipos and each of those are going to run about $300 or more each(quality batteries like Thunder Power...ie. one 5S3P 6000 mAh 18.5V costs $329.90 and you'd need at a minimum of one per engine) whereas the glow fuel is $15 per gallon.

As far as where to mount the batteries, the plane is large enough to put the battiers anywhere. For weight in relation to how glow motors would be set up , you could put them right behind the brushless motor along with the esc's...this way they get plenty of air for cooling.

I dont think the cost is a positive aspect on this size of plane with electrics. Mind you, I have a lot of electric planes(including a smaller FSK B-25 48inch wingspan and a B-17 78" wingspan with four Power 10's). The battery cost alone for the B-17 I have is $400(5 x Thunder Power 2100 3cell)

Jimmy Bananas

My Feedback: (13)

Here are a couple of pics of the B-25.....3 flights on it..putting it to bed for the winter..will fly it again next year....

Jimmy Bananas

My Feedback: (13)

pics didn't show up..try one more time

kahloq

Is it starting to get cold in Iowa? Very nice plane Jimmy. You used Saito .91 4 strokes? I know way overkill, but that new Zenoah G20EI gasser looks like it would fit well in those cowls, but might be a little heavy. It wouldnt sound as nice as two 4 strokes though(or even better...2 x 4-stroke twins )

TLH101

My Feedback: (90)

I just recently added a few panel lines to mine, and some good beefy landing gear.

Jimmy Bananas

My Feedback: (13)

KAHLOG:

No , not that cold in Iowa..still some good flying weather left...have some other planes I want to fly,so just going to weather it this winter and fly it next year..Using Mag 91 4-strokes...that is enough power for the plane..can fly at 2/3 throttle with no problems...the gas engines you mention,would be to heavy...if you were to build a 100"-110" ws B-25,then i say gas engines would be OK..alot of tail weight would have to be added, if used on the KMP B-25...going to try to add a few more pics if I don't screw up...

roltech

What retracts are you using? I also want to change mine to a better quality.

roltech

CB1000C

My Feedback: (6)

Here are some pics from this season. The bomb drop is a real crowd pleaser. Love the way this plane flys. Saito 100s, spring air retracts, weighs in at 21.8 with full bomb load.

TLH101

My Feedback: (90)

Not sure exactly, I purchased them used. They look very similar to Robart 630 series, but I think they are Sierra's. Have 5/8 struts on the mains, and 1/2" strut on the nose.