aehaas

A friend just put together and flew a BVM Bandit with a JetCat P60SE installed. It performs well but I feel that I could use a little more power. The KingTech K-70G2 has 2.5 more lbs of thrust (15.5 compared to 13 lbs) and should do the trick. The planes finished weight is 19 lbs without fuel.

Is the KingTech as responsive or more so as it is a newer engine?

Also, I looked at the K-80G2 and K-85G2 that seems to have about the same power but weighs much less. 'Does not make sense or am I reading it wrong? I have to have kero-start, no propane for me.

Thoughts?

AEHaas

why_fly_high

My Feedback: (19)

The K80 is a larger older engine. it is effectively the same size as the 100 and 120. I see no point in that engine as you mentioned the weight difference to the K85. I have run a few of the K70's. They are good engines. I have not had a p60 or jetcat for that matter so can't compare the spool time but it seems reasonable to me compared to other jets and never something I have worried about for normal flying. If I was buying an engine for a Bandit I would go at least with the k85 though. That plane won't notice the weight difference between the 70 and 85. Personally I would probably go with the 120 for the Bandit because I like to fly fast and going vertical on takeoff with full fuel is fun.

aehaas

2.8L of fuel all in.

why_fly_high

My Feedback: (19)

What I have found is that putting a larger engine in gets me the same flight time or a little longer. I still fly around at about the same speed but lower power and use the extra power for vertical. I get 45 second longer flights on my little jet when I converted from a K45 to K70. This works to a point but residual thrust can be a problem. I fly my K100 on a plane way draggier than a bandit with 2.4L of fuel and get about 6.5 minutes from wheels off to touchdown. I would bet with my K100 on a Bandit and 2.8L of fuel I would get a solid 7.5-8 minute flights. Unless you want unlimited vertical and a real speed demon you would be happy with the K85.