ChrisB Posted September 30, 2018 Share Posted September 30, 2018 I've got a DB Hurricane Kit and before I start I just wanted to get some ideas of what engines people are using in theirs? I want to try and keep it fully in cowl. Quote Link to comment Share on other sites More sharing options...
Jon H Posted September 30, 2018 Share Posted September 30, 2018 i am having this debate with myself at the moment. I have had a half built example in the corner of my room for about 12 years and keep putting off its restoration as i just cannot decide on an engine. I originally wanted to use my laser 240v as it fits in the cowl but cooling and tank positioning will be a challenge given that the model is already built. I then toyed with a 300v, but had similar issues with the tank and it will just poke out of the cowling. I am now wondering if my 30cc laser petrol will be man enough for the job and will be testing the engine in another model of similar size and weight. I am encouraged by reports from customers using our 180 in YT Hurricanes and H9 30cc spitfires which are only slightly smaller and a very similar weight. I also have a report from a customer who is using our 180 glow in his 24lb example of the DB hurricane and while he reports scale performance and nothing more i am ok with that. The full size hurricane is no rocketship so im keen to try it with the laser petrol. its been a long time since a model gave me such confusion. Certainly the DB spit will be fine on a 30cc 4 stroke but i am just not 100% sure about the Hurricane. My other similar size/weight models have much more power but equally have much greater performance than is needed for a Hurricane. Quote Link to comment Share on other sites More sharing options...
Chris Freeman 3 Posted October 1, 2018 Share Posted October 1, 2018 I built 2 DB Hurricanes 25 years ago, one for a mate and one for me. My mate had a 30cc ST, I used a 25cc ST and both flew very well at around 23 pounds. Any good 30cc will fly it well. Quote Link to comment Share on other sites More sharing options...
Tomtom39 Posted October 1, 2018 Share Posted October 1, 2018 Mine started with a Laser 180 . Following a sudden arrival and copious repair its now fitted with a DLE 35RA (also upgraded to the built up wing) . Plenty of power . One of our club members has a DLA/E 50/56 (I can't remember which one) . I couldn't understand why he needed so much more power until I tried to pick it up. He had glassed the wings. Edited By Tomtom39 on 01/10/2018 14:21:46 Quote Link to comment Share on other sites More sharing options...
Jon H Posted October 1, 2018 Share Posted October 1, 2018 Posted by Tomtom39 on 01/10/2018 14:21:05: Mine started with a Laser 180 . Following a sudden arrival and copious repair its now fitted with a DLE 35RA (also upgraded to the built up wing) . Plenty of power . One of our club members has a DLA/E 50/56 (I can't remember which one) . I couldn't understand why he needed so much more power until I tried to pick it up. He had glassed the wings. Edited By Tomtom39 on 01/10/2018 14:21:46 I have glassed my wings but the basic airframe without radio or engine is only 12lbs. If an engine is 3lbs, 2lbs for radio i still have 3lbs to keep to my 20lb target. How heavy was your 180 powered example? Quote Link to comment Share on other sites More sharing options...
Tomtom39 Posted October 1, 2018 Share Posted October 1, 2018 Hello Jon, mine was a shade under twenty pounds A.U.W , repaired one with the dle is 23lbs 9oz's. with electronic retracts . I thought about skinning it with the Mick Reeves Pro-skin , however ended up using balsa sheet and light glass fibre cloth with five coats Poly-C , which I had tinted to give me a base coat from which to work from. (Sorry made mistake on the AUW , a bit heavier than the 21lbs) Edited By Tomtom39 on 01/10/2018 15:23:21 Quote Link to comment Share on other sites More sharing options...
ChrisB Posted October 3, 2018 Author Share Posted October 3, 2018 Thanks folks. I’d like a 4s petrol and from experience of building a DB Spitfire (all wood), a MOKI 210, was just enough to stagger around. I had hoped for something like. Valach or Kolm. Equally I may opt for an OS 40gf or a roto. Really not sure. What I will be doing is making the tropical version 2B as A. It has a volks filter which will give me a bit more space underneath and that marque also had a slightly longer cowl, which will help with engine length. Edited By ChrisB on 03/10/2018 14:02:56 Quote Link to comment Share on other sites More sharing options...
Jon H Posted October 3, 2018 Share Posted October 3, 2018 a moki 210 should have monstered the spitfire. Mine flew on a saito 150 and was fine. What did it weigh? Quote Link to comment Share on other sites More sharing options...
ChrisB Posted October 3, 2018 Author Share Posted October 3, 2018 Posted by Jon - Laser Engines on 03/10/2018 14:20:08: a moki 210 should have monstered the spitfire. Mine flew on a saito 150 and was fine. What did it weigh? The Spitfire was built from the bandsaw kit as plan but with a recessed lower firewall to accommodate the wrap around exhaust. All up was 16lbs which I was happy with and then the lead started to be added. 6lbs later and eventually it balanced. To say I was disappointed is an understatement, especially as the tank bay was reduced due to the recess so flight time was about 6 minutes. I've since sold it but don't want to make the same mistake with the Hurricane. Quote Link to comment Share on other sites More sharing options...
Jon H Posted October 3, 2018 Share Posted October 3, 2018 its always the lead. Mine needed 8lbs! in the end i used a massive lump of steel as a prop nut. it worked a treat and the engine would idle really nicely. Long term it would probably have done the bearings in mind you Quote Link to comment Share on other sites More sharing options...
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