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Showing results for tags 'engine'.
Found 3 results
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Hi, My last second hand "bargain" is a Saito Black Knight with a CH-ignition kit on it, its performance is very weak against my Methanol version, only 7.400 rpm on a Master Airscrew 16 x 8 that my methanol Saito 150 gives me 8.900rpm on 10% nitro, the zamac carburetor looks like a measly 6.5 mm, any idea what ID of the Morris mini motors one is ?. https://www.morrisminimotors.com/saito-fa-150a-single-cylinder-4-stroke-engine-carburetor-conversion-kit-safa150a-3.html CH-Ignitions give a 30° advance, I think that my 2 stroke petrols are around 26° I will look at it this morning.
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I'm refurbishing a fascinating old Enya 35 4C open rocker engine for a friend. It doesn't look like it's had much running but it's gummed up with old castor oil and the bearings are rusty, so I'm replacing them. My question is about lubrication of the rear timing gears. There doesn't appear to be a vapour path to them from the crankcase, other than through the sliding fit of the timing shaft at the rear of the crankcase. So I assume I should partially fill the rear "gearbox" casing with oil via the tappet holes. This would serve to lubricate the gears, cams and timing shaft rear ball race. Any thoughts? I've also noticed that the crankcase breather was blocked (!) and that the hole is only 0.9mm, which seems small compared to modern engines. The rear crankshaft bearing is unshielded and the front one is shielded on its front face only. Again, the only path I can see for oil vapour to reach the front bearing is via the sliding fit of the crankshaft through the front bearing housing. It seems odd that there isn't hole, or am I missing something? Presumably the rockers need a squirt of oil before each flight?
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I've just removed the backplate from an un-run Saito 62B, only to find a crack all the way across the conrod to a depth about 1/4 of the thickness. I have two of these engines, both new and un-run, so I looked in the other - exactly the fault! I contacted MacGregor but they were not aware of this issue and directed me back to the supplying model shop. Has anyone else seen this in 2020 vintage Saito engines?
