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jeff2wings

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Posts posted by jeff2wings

  1. 19 minutes ago, Brian Cooper said:

    Meanwhile, back with "Y" leads... Nope, use separate channels. 

    They are easier to set up and also gives a greater level of security in the event of servo failure. 

    Never quite understand this statement, if one servo on a Y lead fails the other one will continue working

  2. 46 minutes ago, Rich Griff said:

    Wheelspin is showing the 09 hornet as *shadow stock* meaning "at Perkins". Hopefully Perkins have them in stock but..........don't hold your breath....

     

    I too am after a 15, a *period* 15, glow or diesel, for a *period* c/l kit......more about that later.

     

     

    I'm looking to scale back my engine collection and have a number of engines that would suit your project I.e. AM 25 pm me if interested

  3. Deja' vu  or something like that 😄 I was intending to drop a comment in the current thread then I remembered this previous one, from ten years ago 😯 seriously a decade ago !!! And the answer as to what is my favourite? Yes.All of them,the good the bad and the awful, I've always been fascinated by miniature internal combustion engines and the incredible variety of designs for powering models on land ,water and air no wonder my shelves are groaning from the weight of more engines than I will ever have models too put them in 🙂!

    But the engines I have designed and made myself or from casting kits and it has most definitely made me appreciate the considerable effort that manufacturers go to just getting one engine on market, never mind a hole range .

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    10cc o/d

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    Micron 5cc crankcase machined from solid

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    diesel conversion Magnum 25

     

    • Like 2
  4. I did follow your thread at the time,for anyone interested MR has a 75 kit in stock from a recent run of kits and still makes short runs of the classic range,I'm waiting for a 52 kit.

    Fuselage now sanded and final cowling blocks added only things left is replacement of one of the ailerons as the wood is far to soft and making a decision on the kind of finish and the dreaded colour scheme 😬 !

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    • Like 6
  5. Well it does quite literally say it's a kwikbult kit! This was the industry standard in the late 60's & 70's, Chris Foss is still selling his Wot  series models using the same formula, a pair of quality foam wings, precut parts and an instruction book!

    And models back then needed to be able to hand less than ideal conditions.  Hopefully I've done this right!

     https://youtu.be/BNSFX9RP5_g?si=vEUkETHGZKbZ6zcV

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    Last bit glued on

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    Cowl and forward part of fuselage carved and sanded to shape, just need to decide on which HP 61 I will use?

    • Like 2
  6. So spent the last couple of evenings doing one of the jobs I least like doing, G/F the wing joint and sanding it down although since I have been using epoxy finishing resin it's a lot less tedious. 

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    Well thats the tank bay fuel proofed!

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    Servos and wing  mounting blocks in place, l did drop the throttle servo down  as it was a bit close to the aileron servo plenty of clearance now

    • Like 1
  7. It is as far as I know from the seller a 30+ year old kit ,amazingly the wing veneer is in perfect condition unlike some other vintage kits I have brought! This is a model deserving of the title 'classic ' in design that has its roots in Mick's dictator c/l stunt model,and its construction so typical of the 70's as 'solid' in order to take the rough and tumble of the average club flyer but capable of performing well enough to get people into competition aerobatics. 

    As for availability and prices, a quick call to MR wil give you the answer, maybe I will get a 52 as I have a box full of vintage 40's! 😄 

  8. Well I couldn't wait any longer, although I have three builds in the finishing off stage I've  been itching to start on this after buying an original MR kit last year. 

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    This is a real nostalgia build for me, my first was made in '76 Horizon radio and a HP 61 FS up front, this will also have a HP 61 but the earlier ons same as on the kit box.This won't be a blow by blow as it's a very straight forward model to  build 

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    a few hours in and the wing is looking good 

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    Aileron horns, careful with that glue!

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    The fuselage is a basic box construction and went together quickly, in fact I probably spent more time waiting for glue to dry.This has been modified from the kit instructions by having the tank hatch on top rather than underneath and the wing is a bolt on fixing 

     

    • Like 5
  9. Can confirm that they convert to diesel well ,the FP's are a a better engine than the LA series 

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    as far as idle speed I aim for 2,500 -2,800 on the ground and use thr idle down function on landing approach 

  10. Got too run both the Enya and TT90 today the Enya  started second flip of the prop! The thunder tiger needed a spin with the electric starter, the extra shim making top end tuning a little less fraught 

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    Enyas like saitos always seem to be set up a bit rich on the lower end from the factory, smoke on!

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    TT running strongly on its 14x8 jfx prop

     

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    • Like 2
  11. An idea Jim Walker came up with some 70 years ago,l would be interested to know way a need for a pump inthe first place?

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    A YS pump system although designed for 2 stroke operation  

     

     

    • Like 1
  12. So in direct reply to the op then the Perry pump suggested by  Robin would fit the bill,it sorted out a problem for a club mate a long time ago with a very early saito that had the carb mounted directly to the head Lazer style in a vintage model, red zephyr I think, the tank being a lot lower it would only run 1/2 a 4oz tank but the pump ment it would use all the tank.

    Brian's suggested system may have been more about directly pressurising a tank directly for a smoke oil tank,four-stroke engines have a much better fuel draw the there 2 stroke equivalents 

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  13. You can use crankcase pressure on four-stroke and irc Brian Winch explained in his column how,basically most pumps use the + and - pressure pulses in the crankcase on a two stroke as it draws in a fresh charge and the pumps it into the cylinder, this obviously is not the same process in a four-stroke but the action is still the same in that the crankcase volume increases and decreases with every stroke, thereupon producing +and- pulses which requires the vent,it's not just there to let the oil out! So in oder to use a pump Brian suggested using a second crankcase vent with a one way valve to admit air on the up stroke and provide a positive pulse on the down stroke for the pump or directly to the tank, in effect the same as using timed pressure on a two stroke. 

    • Like 1
  14. Sherman - 210 AC/DC Tig however half way through the first one I run out of gas ! Luckily I was able to drop in to my ex-works and use the Miller transtig 350 ,bit out of practice so for me it's a little untidy but looks better after it's machined off !😄

    • Like 1
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