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Engine basics => Four strokes only => Topic started by: Doug Burright on June 06, 2014, 11:38:59 PM
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This is a pretty cool engine. It is fairly large, for it's displacement, though.
The carb is on the side of the cylinder, and I'm trying to visualize if rotating the carb will allow the throttle linkage to operate in a front-to-back motion, rather than the vertical arrangement that it is set-up with, now. I should have had a picture ready for this, before I made a post about it. Hang loose- I'll catch up and shoot one soon.
If bench running goes well, I will make a neat airplane for the circles. It doesn't have to be on an R/C model! Then, I'll be the only one out here that has a F/S on a C/L plane. (that I've seen) Ha ha!
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Hello Doug, the belt drive Webra engines are a neat solution looking for a problem! I like them for the novelty value. As you remarked, they are heavy for the displacement. The killer for C/L use is that they make very little in the way of power compared to modern fourstrokes. I would recommend that you use it as a glass case exhibit. Totally useless for C/L stunt, but would look and sound good on an old timer design.
Regards,
Andrew.
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This is a pretty cool engine. It is fairly large, for it's displacement, though.
The carb is on the side of the cylinder, and I'm trying to visualize if rotating the carb will allow the throttle linkage to operate in a front-to-back motion, rather than the vertical arrangement that it is set-up with, now. I should have had a picture ready for this, before I made a post about it. Hang loose- I'll catch up and shoot one soon.
If bench running goes well, I will make a neat airplane for the circles. It doesn't have to be on an R/C model! Then, I'll be the only one out here that has a F/S on a C/L plane. (that I've seen) Ha ha!
Come to our September Contest at Tulsa Glue Dobbers. I bet you'll see more than one!
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Hi Doug,
Do you mean "see more 4 strokes " or more Webra T4s? The T4s seem to be pretty rare animals these days. Despite my comments about skins and rice puddings, I find them fascinating engines. Just right for gentle old timer stuff.
Andrew.
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Hi, Doug. As far as I know, Webra made TWO belt-drive 4S engines, a 40 and a 60. I had both, sold them on eBay.
A friend of mine from Italy, Luciano Compostella (RIP) used the 60 on his 1987 Lampo (Italian for lightning). With the Webra, the 56 inch plane weighed 68 ounces.
The engine weighed 21 ounces.
Here's the good part: with this plane, he won the Europeon AND Italian championships in 1987. He was second in the Europeon championships in 1989 and second in the Italian championships in 1988 and 1989.
I think the Webra 40 will be adequate!!!
Bob Z.
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Hello Bob,
I have never seen, let alone experienced the Webra belt drive 60. I have had a 40 from new and it has never been remotely a powerhouse. I use it on Old Timer models when I want a change from spark ignition. I would suspect that Signor Compostella's success in some of the European contests would owe more to his skill as a pilot than to the somewhat overweight Webra 60, powering his ship!
Regards,
Andrew.
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Hi, Andrew. I totally agree with you regarding piloting skills. He was amazing.
When I was at his house, the Lampo was on the dining room table.
When I asked Luciano about the engine, he stated that it was a .60 displacement, weighed as much as a .90, made the power of a .40 and drank fuel like a .25!
Believe me, that guy could fly.
Bob Z.
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Hello Bob,
I only saw Signor Compostella once in the 1960s and I totally agree about his skill. I reckon he could have made a stab at the schedule flying a team racer! He was one of those rare guys who made flying look so easy. A great pity he is no longer with us.
Andrew.